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Contents
- The climate of Santa Rita
- The best time to visit Santa Rita
- The worst time to visit Santa Rita
- Spring weather in Santa Rita
- Summer weather in Santa Rita
- Autumn weather in Santa Rita
- Winter weather in Santa Rita
- 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 Santa Rita
Situated in Guam, USA, Santa Rita carries the Köppen Climate Classification of 'Af', representing a predominant tropical rainforest climate. The geographical location of Santa Rita lends itself to a hot and humid climatic pattern that pervades the area throughout the year. The temperatures remain stable, with monthly average minimums ranging from 79.7°F (26.5°C) to 83.3°F (28.5°C) and maximums varying from 82°F (27.8°C) to 84.7°F (29.3°C).
Relative humidity, another fundamental element of Santa Rita's establishment as a tropical rainforest zone, stays reasonably consistent across the year, varying between 76% and 78%. Sea temperatures fluctuate mildly, ranging from 82°F (27.8°C) in February to 85.4°F (29.7°C) in July. These climatic conditions incorporate a considerable amount of rainfall. The region undergoes high to very high amounts of precipitation all year round, with a noteworthy peak in September, reaching up to 10.28" (261mm). The frequency of rainfall is also high, with every month experiencing rain an average of 17.5 days to 28.9 days.
Wind speeds in Santa Rita demonstrate gentle variations over the years, with the highest average wind speed of 16.3mph (26.2km/h) observed in February and the lowest of 9.6mph (15.4km/h) registered in August. The maximum wind speeds follow a similar trend. Coupled with the high amount of precipitation, Santa Rita has a high percentage of cloud cover, between 39% and 46%.
Relative humidity, another fundamental element of Santa Rita's establishment as a tropical rainforest zone, stays reasonably consistent across the year, varying between 76% and 78%. Sea temperatures fluctuate mildly, ranging from 82°F (27.8°C) in February to 85.4°F (29.7°C) in July. These climatic conditions incorporate a considerable amount of rainfall. The region undergoes high to very high amounts of precipitation all year round, with a noteworthy peak in September, reaching up to 10.28" (261mm). The frequency of rainfall is also high, with every month experiencing rain an average of 17.5 days to 28.9 days.
Wind speeds in Santa Rita demonstrate gentle variations over the years, with the highest average wind speed of 16.3mph (26.2km/h) observed in February and the lowest of 9.6mph (15.4km/h) registered in August. The maximum wind speeds follow a similar trend. Coupled with the high amount of precipitation, Santa Rita has a high percentage of cloud cover, between 39% and 46%.
The best time to visit Santa Rita
Considering the steady temperatures and high humidity, the best time to visit Santa Rita hinges on factors such as rainfall and sunshine. Months with lesser rainfall and higher sunshine hours enhance the visiting experience, making the weather more conducive for outdoor activities. February, March, and April with rainfall between 1.81" (46mm) to 2.44" (62mm), sunshine hours from 8 to 10.5 hours, and lesser number of rainy days, between 17.5 and 19.3 days, can be considered embodying the best time to visit.
The worst time to visit Santa Rita
Given the high levels of rainfall, the months between July to October are less favorable for visiting Santa Rita. The rainfall amount increases significantly, from 7.52" (191mm) to 10.28" (261mm), and the number of rainy days also peaks between 28.1 and 28.9 days. Sunshine hours decrease during this period, reaching a low of 6.9 hours in October.
Spring weather in Santa Rita
Spring in Santa Rita, covering March, April, and May, shows a gradual increase in average temperatures from 82°F (27.8°C) to 84.2°F (29°C), and in sea temperatures from 82.6°F (28.1°C) to 84°F (28.9°C). Rainfall shows a notable increase from 1.81" (46mm) to 3.31" (84mm), but the number of rainy days remains relatively consistent at around 20. Sunshine hours are at their peak, ranging from 8.1 to 10.5 hours.
Summer weather in Santa Rita
Summer, June through August, shows a slight increase in temperature from 84.6°F (29.2°C) to 84.7°F (29.3°C) and in sea temperature reaching up to 85.4°F (29.7°C). The season is characterized by a significant increase in rainfall with 7.52" (191mm) in June, escalating to 9.76" (248mm) in August. The number of rainy days also increases, ranging from 25.4 to 28.9 days. Sunshine hours, though high in June at 10.6 hours, reduce to 7.6 hours in August.
Autumn weather in Santa Rita
Autumn, comprising September, October, and November, sees the temperature dropping slightly, ranging from 84.4°F (29.1°C) to 84.2°F (29°C). Sea temperature also decreases, from 85°F (29.4°C) to 84.5°F (29.2°C). This period has the heaviest rainfall, peaking at 10.28" (261mm) in September and then gradually dropping to 4.69" (119mm) in November. September and October are the cloudiest months, with a cloud cover of 46%. Sunshine hours continue to decrease, hitting a yearly low of 6.3 hours in November.
Winter weather in Santa Rita
Winter in Santa Rita, spanning December to February, involves relatively stable temperatures with minimums ranging from 79.7°F (26.5°C) to 80.6°F (27°C) and maximums between 82°F (27.8°C) and 82.9°F (28.3°C). The sea temperature also reduces, from 83.2°F (28.4°C) in December to 82°F (27.8°C) in February. Rainfall gets substantially lower, staying between 2.83" (72mm) and 2.99" (76mm) across these three months. This period is marked by reduced sunlight hours, ranging from 6.5 to 7.6 hours.
Weather in January
January presents a welcoming start to the year, with soothing temperatures and relative humidity in Santa Rita, Guam. Fluctuations in temperature are not significant, ranging from 80.6°F (27°C) to 82°F (27.8°C). Sea waters remain warm, hinting at pleasant beach outings. Weather in January »
Weather in February
Moving into February, the weather stays consistent with slight dips in temperatures and rainfall. The air gets slightly less saturated as compared to January, offering drier conditions. Sea waters retain their warmth, keeping water activities in full swing. Weather in February »
Weather in March
The transition from February to March, is subtle, with only slight variations in weather elements. The landscape starts to dry out a bit more, with declining rainfall yet again. Sea temperatures mildly rise and maintain their inviting tendency. Weather in March »
Weather in April
April shows a reversal in rainfall tendencies with a jump to 2.44" (62mm) over 19.3 days, reflecting the unpredictability of nature. Temperatures steadily climb, deeming this month suitable for a wide variety of activities. The sea temperature also follows suit, making it a favorable time for swimming and diving. Weather in April »
Weather in May
In Santa Rita, May serves as a precursor to the wet season that lies ahead, with the highest recorded rainfall, from the year start, of 3.31" (84mm). The city revels in a warm temperature blanket that makes walking through its streets an enjoyable experience. Weather in May »
Weather in June
By the time June rolls in, Santa Rita is deep into its wet season. The volume of rainfall surges to 3.7" (94mm), but outdoor enthusiasts can find respite in the increased sunshine hours this month brings. On the temperature spectrum, conditions remain warm and soothing, making June inviting for those prepared for tropical showers. Weather in June »
Weather in July
July is a month not to be missed for rain lovers, as the downpour reaches new heights with an astonishing 7.52" (191mm) of rainfall over 28.9 days. Despite the heavy rainfall, temperatures remain stable and ocean waters reach their warmest point. Weather in July »
Weather in August
As Santa Rita moves into August, it witnesses the apex of its wet season, averaging a high of 9.76" (248mm) throughout the month. Though weather conditions continue to be damp, the allure of warm sea waters and tropical temperatures remains constant. Weather in August »
Weather in September
As September unfolds, Santa Rita prepares for gradual weather transition while still enduring high rainfall levels of 10.28" (261mm). Temperatures hold steady, and the allure of the sea remains, due to still warm waters. The daylight hours begin to recede slightly, creating shorter but still pleasant days. Weather in September »
Weather in October
In October, Santa Rita starts to slowly inch its way out of the rainy season, with rainfall dipping to 8.46" (215mm). The weather carries familiar warm temperatures whilst sea provides still warm waters. Sunlit hours continue their gradual dip, but provide enough room for outdoor adventures. Weather in October »
Weather in November
Santa Rita in November witnesses further reductions in rainfall, down to a lighter 4.69" (119mm) over 24.3 days. The city continues to shimmer under the persistently warm temperatures, offering inviting conditions for travel enthusiasts. Weather in November »
Weather in December
As the calendar turns to December, Santa Rita rounds off the year with continued warm temperatures and a further drop in rainfall to 2.99" (76mm). The rarity of tropical landscapes under warm winter sun remains a sight to behold. Weather in December »
Updated: Jun 4, 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?
January, March through May, October through December, with an average relative humidity of 78%, are most humid months.
How much does it rain?
Throughout the year, there are 288.5 rainfall days, and 60.08" (1526mm) of precipitation is accumulated.
What is the month with the highest UV index?
The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7.
What part of the year is the coldest?
Santa Rita records the coldest temperatures in February, averaging a high of 81.7°F (27.6°C) and a low of 79.7°F (26.5°C).
What month is the ocean coldest?
February is the month with the coldest seawater in Santa Rita, with an average ocean temperature of 82°F (27.8°C).
What is the driest month?
The month with the least rainfall is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation.
When are the longest days?
With an average of 12h and 54min of daylight, June has the longest days of the year in Santa Rita.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.6h of sunshine.
What are the warmest months?
Santa Rita's peak temperatures tend to occur in July and August, with an average high-temperature of 84.7°F (29.3°C).
What is the least humid month?
August is the least humid month, with an average relative humidity of 76%.
What month is the ocean warmest?
The month with the warmest seawater is August, with an average ocean temperature of 85.5°F (29.7°C).
What is the wettest month?
September is the month with the most rainfall. Rain falls for 28.1 days and accumulates 10.28" (261mm) of precipitation.
What is the month with the lowest UV index?
With an average maximum UV index of 6, September is the month with the lowest UV index in Santa Rita.
What is the month with the least sunshine?
November has the least sunshine of the year, with an average of 6.3h of sunshine.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 11h and 24min of daylight.
Is there Daylight Saving Time (DST)?
Santa Rita, Guam, does not utilize Daylight Saving Time (DST). ChST timezone is used throughout the entire year.
Average temperature
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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
Santa Rita, 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).
Santa Rita, Guam, USA
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