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Contents
- The climate of Inarajan
- The best time to visit Inarajan
- The worst time to visit Inarajan
- Spring weather in Inarajan
- Summer weather in Inarajan
- Autumn weather in Inarajan
- Winter weather in Inarajan
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Inarajan
Formally recognized with the Köppen climate classification code Af, Inarajan, Guam, USA, sits amidst the biodiversity of the Tropical Rainforest climate. Given such a positioning, the average weather patterns in the region confirm the existence of consistent, high levels of rainfall, high humidity, and a significant warmth year-round. The range of temperature fluctuations across the year is quite narrow, and the warmth continues around the year, with the highest monthly average temperature hitting 84.7°F (29.3°C) and the lowest dipping around 79.7°F (26.5°C).
Humidity figures present the typical statistics of a tropical rainforest, with relative humidity values hovering between 76% to 78%. Parallel to these conditions is the consistent precipitation pattern, confirming the tropical rainforest climate as the inhabiting rainfall is ranging from 1.81" (46mm) to 10.28" (261mm) across different months. Wind speed remains below 16.3mph (26.2km/h) throughout the year, presenting no significant annual variations, fluctuating between 9.6mph (15.4km/h) to 16.3mph (26.2km/h).
One distinctive aspect of Inarajan's weather is the significantly high rainfall during the months of July to October. During this period, the average rainfall spikes up to 7.52" (191mm), and the number of rainy days exceeds 28 days per month, reaching the pinnacle of 10.28" (261mm) in September. In contrast, the period of driest weather is observed between February and April, where rainfall levels fall to an average of 2.28" (58mm).
Humidity figures present the typical statistics of a tropical rainforest, with relative humidity values hovering between 76% to 78%. Parallel to these conditions is the consistent precipitation pattern, confirming the tropical rainforest climate as the inhabiting rainfall is ranging from 1.81" (46mm) to 10.28" (261mm) across different months. Wind speed remains below 16.3mph (26.2km/h) throughout the year, presenting no significant annual variations, fluctuating between 9.6mph (15.4km/h) to 16.3mph (26.2km/h).
One distinctive aspect of Inarajan's weather is the significantly high rainfall during the months of July to October. During this period, the average rainfall spikes up to 7.52" (191mm), and the number of rainy days exceeds 28 days per month, reaching the pinnacle of 10.28" (261mm) in September. In contrast, the period of driest weather is observed between February and April, where rainfall levels fall to an average of 2.28" (58mm).
The best time to visit Inarajan
Factoring in diverse variables like temperature, precipitation, and sunshine duration, the prime time for a trip to Inarajan would be during the late spring, mainly from February to April. These months bring moderate temperature levels, hovering between 79.7°F (26.5°C) to 82.9°F (28.3°C), and rainfall is at the lowest levels of the year. Further, the duration of sunlight increases to an estimated 12.4 hours per day, promoting plentiful daylight for outdoor ventures.
The worst time to visit Inarajan
While every weather condition has its charm and effect, the period from July to October can prove troublesome for visitors in Inarajan. During this time, the town sees the highest rainfall levels, reaching up to 10.28" (261mm), and increased number of rainy days - around 28.9 days per month. Such extensive showers could limit outdoor activities and keep you indoors for an extended period, making it not the ideal time for a visit.
Spring weather in Inarajan
Springtime in Inarajan is pleasantly warm with average high temperatures ranging between 82°F (27.8°C) to 84.2°F (29°C) while the average low temperatures linger around 80.1°F (26.7°C) to 82.2°F (27.9°C). It is the perfect season for outdoor activities with precipitation levels relatively lower, from 2.44" (62mm) to 3.31" (84mm). The daylight hours gradually rise throughout this period, from about 12.1 to 12.7 hours, while daily sunshine hours increase from 8.1 to 10.5 hours.
Summer weather in Inarajan
Inarajan's summer months portray the highest highs and lows, with maximum temperatures peaking at 84.7°F (29.3°C) and minimum temperatures resting at 82.4°F (28°C) to 83.3°F (28.5°C). Simultaneously, these months are the wettest, with the average rainfall fluctuating from 7.52" (191mm) to a high of 10.28" (261mm). Moreover, with the nature of a tropical rainforest, sunlight is somewhat scarce, with an average duration of 7.6 to 8.6 hours per day due to increased cloud coverage.
Autumn weather in Inarajan
Autumn in Inarajan witnesses a decrease in temperature from the summer months, with highs around 84.4°F (29.1°C) to 84.2°F (29°C) and lows from 82.6°F (28.1°C) to 82.8°F (28.2°C). Rainfall remains above average in the early part of the season with 8.46" (215mm) in October, but gradually decreases to 4.69" (119mm) by November. Daily sunshine hours remain low due to increased cloud coverage; however, daylight hours gradually decrease from 12.2 to 11.5 hours.
Winter weather in Inarajan
Winter in Inarajan is warmer than many places, with high temperatures ranging from 83.5°F (28.6°C) to 84.4°F (29.1°C) and lows only slightly cooler at around 80.6°F (27°C) to 82°F (27.8°C). The rainfall decreases to a manageable 2.83" (72mm) by December and 2.99" (76mm) in January, offering a more comfortable travel experience. The amount of daily sunlight is at a yearly low of 6.3 to 6.5 hours per day; however, daylight hours maintain an average of 11.4 hours throughout winter.
Weather in January
Weather conditions in Inarajan, Guam in January slowly transition from the relatively serene period seen in the earlier part of the winter season. The new year is greeted with a slight increase in rainfall to 2.83" (72mm) with 21.3 rainy days, making this month not so ideal for outdoor activities. Weather in January »
Weather in February
February in Inarajan, Guam, displays a slight decline in temperature compared to January, but the difference is almost imperceptible to undiscerning inhabitants and visitors. The drop is likewise echoed in the sea temperatures, however, it remains high enough for year-round swimming possibilities. Weather in February »
Weather in March
March indicates the final days of winter in Inarajan, Guam, as temperatures begin to roam around the annual highs. Weather conditions show a tiny escalation humidity-wise, maintaining the tropical essence of the region, yet it is not discomforting. Weather in March »
Weather in April
Inarajan, Guam in April witnesses a climb in the temperature, indicating the onset of the warmer months. The climate remains consistent with prior months, detailed by warm afternoons and mildly cold evenings. Sea temperatures exhibit a subtle rise, creating the perfect conditions for snorkeling and other aquatic recreational activities. Weather in April »
Weather in May
The weather in May sees Inarajan, Guam welcoming the summer months. Temperatures float in the higher bracket, and sea temperatures also follow suit. Whilst May might not appear as the wettest month, there is a sharp rise in rainfall from April to 3.31" (84mm). Weather in May »
Weather in June
June experiences the advent of the rainy season in full swing in Inarajan, Guam. There is a slight temperature escalation from May leading to warmer days. The higher volume of rainfall, recorded at 3.7" (94mm) spread over 25.4 days, enhances the lush greeneries of the island. Weather in June »
Weather in July
July continues the trend of the rainy season, with Inarajan, Guam experiencing the highest rainfall of the year at 7.52" (191mm). Despite being the wettest month, July does not compromise the warmth as temperatures remain consistently high. Weather in July »
Weather in August
August sustains the momentum of the rainy season started in July in Inarajan, Guam. The warmth remains intact across the island with ocean temperatures at their peak. Although rainfall continues with intensity, amounting to 9.76" (248mm) dispersed over 28.9 days, the ambiance remains blissful. Weather in August »
Weather in September
As September steps in at Inarajan, Guam, the rainfall still varies on the higher side with an average of 10.28" (261mm). This month mugs up to become the second wettest month of the year following August. Despite the showers, the sea temperatures are suitable for those willing to indulge in some beachside fun. Weather in September »
Weather in October
In October, Inarajan, Guam, witnesses a gradual reduction in temperature and rainfall from September. Conditions across the island begin to marginally cool off, signaling the onset of autumn. Sea temperatures start to recede, although they stay warm enough for beach visits and water sports. Weather in October »
Weather in November
November brings a significant change in the weather in Inarajan, Guam, with a reduction in rainfall to 4.69" (119mm). As temperatures begin to recede, the slow transition towards winter becomes increasingly evident. This month marks the onset of milder temperatures, and the sea starts to slightly cool off. Weather in November »
Weather in December
December in Inarajan, Guam, rounds off the year with the commencement of the cooler winter season. Although, 'cool' is a relative term as temperatures maintain a high degree, reflecting the tropical climate of the region. The rainfall drops to 2.99" (76mm) over 22.8 days, revealing a trend towards drier conditions. Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the most humid months in Inarajan?
January, March through May, October through December, with an average relative humidity of 78%, are most humid months.
How many days does it rain in Inarajan?
In Inarajan, Guam, during the entire year, the rain falls for 288.5 days and collects up to 60.08" (1526mm) of precipitation.
What is the month with the highest UV index in Inarajan?
The months with the highest UV index in Inarajan are January through August, October through December, with an average maximum UV index of 7.
What are the coldest months in Inarajan?
In Inarajan, February is known for its average lowest temperatures, reaching a high of 81.7°F (27.6°C) and a low of 79.7°F (26.5°C).
When is the ocean coldest in Inarajan?
The month with the coldest seawater in Inarajan is February, with an average ocean temperature of 82°F (27.8°C).
What is the driest month in Inarajan?
March is the month with the least rainfall. Rain falls for 20.2 days and accumulates 1.81" (46mm) of precipitation.
When are the longest days in Inarajan?
The month with the longest days is June, with an average of 12h and 54min of daylight.
What month has the most sunshine in Inarajan?
With an average of 10.6h of sunshine, June has the most sunshine of the year in Inarajan.
What is the hottest time of year in Inarajan?
During July and August, Inarajan experiences its warmest period, with an average high-temperature of 84.7°F (29.3°C).
What is the least humid month in Inarajan?
August is the least humid month, with an average relative humidity of 76%.
What month is the ocean warmest in Inarajan?
August is the month with the warmest seawater in Inarajan, Guam, with an average ocean temperature of 85.5°F (29.7°C).
What is the rainiest month in Inarajan?
The month with the most rainfall in Inarajan, Guam, is September, when the rain falls for 28.1 days and typically aggregates up to 10.28" (261mm) of precipitation.
What is the month with the lowest UV index in Inarajan?
With an average maximum UV index of 6, September is the month with the lowest UV index in Inarajan.
What is the month with the least sunshine in Inarajan?
November has the least sunshine of the year, with an average of 6.3h of sunshine.
What is the month with the shortest days in Inarajan?
With an average of 11h and 24min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Inarajan?
Inarajan, Guam, does not utilize Daylight Saving Time (DST). ChST timezone is used throughout the entire year.
Average temperature
Inarajan, GU
The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).
The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).
Average pressure
Inarajan, GU
- Average pressure in January:
29.86"Hg - Average pressure in February:
29.88"Hg - Average pressure in March:
29.87"Hg - Average pressure in April:
29.86"Hg - Average pressure in May:
29.85"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.8"Hg - Average pressure in August:
29.79"Hg - Average pressure in September:
29.79"Hg - Average pressure in October:
29.79"Hg - Average pressure in November:
29.82"Hg - Average pressure in December:
29.83"Hg
The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).
Average wind speed
Inarajan, GU
- Average wind speed in January:
15.8mph - Average wind speed in February:
16.3mph - Average wind speed in March:
15mph - Average wind speed in April:
13.7mph - Average wind speed in May:
11.7mph - Average wind speed in June:
11.6mph
- Average wind speed in July:
10.3mph - Average wind speed in August:
9.6mph - Average wind speed in September:
9.9mph - Average wind speed in October:
11.2mph - Average wind speed in November:
14.7mph - Average wind speed in December:
15.7mph
The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity
Inarajan, GU
The months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).
Average rainfall
Inarajan, GU
- Average rainfall in January:
2.83" - Average rainfall in February:
2.28" - Average rainfall in March:
1.81" - Average rainfall in April:
2.44" - Average rainfall in May:
3.31" - Average rainfall in June:
3.7"
- Average rainfall in July:
7.52" - Average rainfall in August:
9.76" - Average rainfall in September:
10.28" - Average rainfall in October:
8.46" - Average rainfall in November:
4.69" - Average rainfall in December:
2.99"
The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").
Average rainfall days
Inarajan, GU
- Average rainfall days in January:
21.3 days - Average rainfall days in February:
17.5 days - Average rainfall days in March:
20.2 days - Average rainfall days in April:
19.3 days - Average rainfall days in May:
23.1 days - Average rainfall days in June:
25.4 days
- Average rainfall days in July:
28.9 days - Average rainfall days in August:
28.9 days - Average rainfall days in September:
28.1 days - Average rainfall days in October:
28.7 days - Average rainfall days in November:
24.3 days - Average rainfall days in December:
22.8 days
The months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).
Average sea temperature
Inarajan, GU
The best month for swimming (with the highest average sea temperature) is August (85.4°F).
The coldest month (with the lowest average sea temperature) is February (82°F).
Average daylight / Average sunshine
Inarajan, GU
- Average daylight in January:
11h and 2min - Average daylight in February:
11h and 4min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 4min - Average daylight in June:
12h and 5min
- Average daylight in July:
12h and 5min - Average daylight in August:
12h and 4min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 5min - Average daylight in November:
11h and 3min - Average daylight in December:
11h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in January:
7h and 4min - Average sunshine in February:
8h and 0min - Average sunshine in March:
8h and 1min - Average sunshine in April:
8h and 3min - Average sunshine in May:
10h and 3min - Average sunshine in June:
10h and 4min
- Average sunshine in July:
8h and 4min - Average sunshine in August:
7h and 4min - Average sunshine in September:
7h and 5min - Average sunshine in October:
6h and 5min - Average sunshine in November:
6h and 2min - Average sunshine in December:
6h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).
Average sunshine days
Inarajan, GU
- Average sunshine days in January:
5.4 days - Average sunshine days in February:
5.8 days - Average sunshine days in March:
6.6 days - Average sunshine days in April:
5.8 days - Average sunshine days in May:
4.3 days - Average sunshine days in June:
2.1 days
- Average sunshine days in July:
1.4 days - Average sunshine days in August:
1.6 days - Average sunshine days in September:
1.1 days - Average sunshine days in October:
1.4 days - Average sunshine days in November:
3.6 days - Average sunshine days in December:
4.7 days
The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).
Average UV index
Inarajan, GU
The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).
Average cloud cover
Inarajan, GU
The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).
Average visibility
Inarajan, GU
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Inarajan, Guam, USA
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