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Contents
- The climate of Aiea
- The best time to visit Aiea
- The worst time to visit Aiea
- Spring weather in Aiea
- Summer weather in Aiea
- Autumn weather in Aiea
- Winter weather in Aiea
- 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 Aiea
Aiea, situated in Hawaii, USA, is blessed with an As (Tropical wet and dry or savanna) type of climate, according to the Köppen climate classification. The As climate, typically characterized by a 'summer' dry season, makes the weather in Aiea not only alluring but largely predictable throughout the year.
Throughout the year, Aiea experiences minimal fluctuations in certain weather parameters. The high temperatures range from 75°F (23.9°C) in February to a peak of 81.5°F (27.5°C) in September. The low temperatures also roll between 69.1°F (20.6°C) in February and 75.7°F (24.3°C) in August. The fairly uniform temperatures make Aiea a warm weather paradise all year round.
In terms of precipitation, Aiea receives its highest rainfall from 1.81" (46mm) in March and October, and the least in July, with 0.67" (17mm). The number of rainfall days also varies, with the highest numbers from 16.1 days in November to 18 days in March and October. Conversely, both relative humidity and sea temperatures remain fairly stable throughout the year, hovering around 75% and between 75.7°F (24.3°C) to 80.4°F (26.9°C) respectively.
Interestingly, daylight hours progressively increase from 11 hours in January to a maximum of 13.4 hours in June, before receding towards the end of the year. Correspondingly, Aiea enjoys sunshine hours from 6.5 hours in November and December to a high of 10.8 hours in June. Noticeably, the UV index and visibility remain invariant at 6 miles and 6 throughout the year respectively.
Throughout the year, Aiea experiences minimal fluctuations in certain weather parameters. The high temperatures range from 75°F (23.9°C) in February to a peak of 81.5°F (27.5°C) in September. The low temperatures also roll between 69.1°F (20.6°C) in February and 75.7°F (24.3°C) in August. The fairly uniform temperatures make Aiea a warm weather paradise all year round.
In terms of precipitation, Aiea receives its highest rainfall from 1.81" (46mm) in March and October, and the least in July, with 0.67" (17mm). The number of rainfall days also varies, with the highest numbers from 16.1 days in November to 18 days in March and October. Conversely, both relative humidity and sea temperatures remain fairly stable throughout the year, hovering around 75% and between 75.7°F (24.3°C) to 80.4°F (26.9°C) respectively.
Interestingly, daylight hours progressively increase from 11 hours in January to a maximum of 13.4 hours in June, before receding towards the end of the year. Correspondingly, Aiea enjoys sunshine hours from 6.5 hours in November and December to a high of 10.8 hours in June. Noticeably, the UV index and visibility remain invariant at 6 miles and 6 throughout the year respectively.
The best time to visit Aiea
Optimal visiting times to Aiea largely depend on visitor preferences, particularly towards temperature and rainfall. However, by combining several factors such as lower rainfall, higher sunlight durations, and warm temperatures, the months from May to July stand out. During these months, rainfall is at the year’s lowest, along with increased sunlight hours of up to 10.3 hours per day and warm sea temperatures, all conducive for outdoor activities and beach outings.
The worst time to visit Aiea
Although Aiea has a pleasant climate year-round, the months of March and October may not be the best time to visit. Heavy rainfall during these months, clocking at 1.81" (46mm) and with up to 18 days of rain, may cause disruptions to outdoor plans such as hiking, beach visits and sightseeing.
Spring weather in Aiea
Spring spans between March and May in Aiea. Start of spring witnesses the heaviest rainfall of 1.81" (46mm) in March. However, as April rolls in, rainfall decreases considerably. Temperatures during spring moderately fluctuate, with highs varying from 75°F (23.9°C) (March) to 78.4°F (25.8°C) (May), and lows moving from 69.4°F (20.8°C) to 72.7°F (22.6°C). Sunshine hours experience a hearty boost, going up from 8 hours (March) to 10.3 hours (May), heralding the onset of summer.
Summer weather in Aiea
Summer in Aiea, from June through August, is characterized by the year’s highest temperatures and longest days. High temperatures range from 79.5°F (26.4°C) (June) to 81.3°F (27.4°C) (August), while lows hover around 75°F (23.9°C). Despite being summer, Aiea receives moderate rainfall, with the lowest precipitation in July. Hours of sunlight breach the 10-hour mark, providing ample daylight for explorations.
Autumn weather in Aiea
September to November constitutes the autumn season in Aiea. Autumn shares a lot in common with summer, with high temperatures from 81°F (27.2°C) (September) to 78.8°F (26°C) (November). Precipitation levels pick up pace reaching 1.81" (46mm) again in October. Sunshine hours gradually decrease as winter approaches, moving from 8.9 hours in September to 6.5 hours in November.
Winter weather in Aiea
Winter months of December to February do not bring extreme cold to Aiea. Instead, temperatures remain pleasant with highs between 75.7°F (24.3°C) and 76.5°F (24.7°C), and lows between 70°F (21.1°C) and 71.4°F (21.9°C). Rainfall also slightly increases during these months, recording 1.54" (39mm) in December. Sunshine hours are at their year’s lowest, with about 6.5 hours in December and February. Despite the relatively short daylight hours, winter in Aiea is milder compared to many other regions.
Weather in January
Aiea, Hawaii embarks on the new year with a mild climate, typical of the Pacific region. A definite shift isn't seen from December to January: temperatures remain placid, daylight hours modest, and rainfall consistent. January does yield a gentle increase in wind speed, contributing to a fresh Hawaiian breeze that's a boon to this tropical haven. Weather in January »
Weather in February
February, the month of love, continues to charm the inhabitants of Aiea with its favorable weather patterns. The increase in cloud cover complements the tropical backdrop without hindering the scenic beauty or obstructing the sunshine. Weather in February »
Weather in March
As March takes hold, the weather remains largely unchanged. This consistency is a testament to Aiea's near-perfect climate, unvaried and affable, with the Pacific Ocean moderating any possible extremes. In March, the hours of sunshine experience a minor decline, balancing with the moderate increase in wind speed. Weather in March »
Weather in April
As Aiea strides into April, the transition becomes clearly visible: the days grow longer, and the air warmer. Consequently, the town flourishes, teeming with vibrant hues from nature's palette. Rainfall drops from March, bringing back the sunny equilibrium the city is known for. Weather in April »
Weather in May
May, the gateway to summer, ushers in perceptibly brighter and warmer days. Aiea blooms under the generous Hawaiian sun, the flora flourishing under the increased sunshine hours. Despite being a precursor to summer, May sees a reasonable moderation in conditions; temperatures do not soar high abruptly. Weather in May »
Weather in June
Beaming with summer radiance, June in Aiea hosts extended hours of sunshine. This brightness does not come at the expense of comfort; the climate remains splendidly equable. The moderation in relative humidity and wind speed accompanies the rise in temperature. Weather in June »
Weather in July
July is undisputedly a summer month in Aiea where the climate reaches its warmest period. However, the Hawaiian respect for natural moderation ensures that 'warm' does not translate into 'uncomfortably hot.' Along with the extended daylight hours, the wind speed slightly increases, bringing the fresh ocean air inland. Weather in July »
Weather in August
The swan-song of summer, August, bows out with grace, enthusiastic sunshine, and just a hint of autumn around the corner. August capitalizes on extended daylight hours by boasting the maximum UV index of the year. Despite the settled weather, wind speed markings display an appreciable drop, aiding to the serene late-summer feel. Weather in August »
Weather in September
September carries the vestiges of summer into Aiea; the sun continues to be generous while rainfall picks up a sporadic tempo. The sea remains inviting, its familiar warmth undiminished, and the beaches retain their vibrancy. Weather in September »
Weather in October
October illuminates Aiea with a reflective autumn glow. The weather gradually stepping away from the spirited summer vivacity, inches closer towards the placid Hawaiian winter. Daylight hours begin to shrink while the temperature scale gently slides downhill. Weather in October »
Weather in November
November in Aiea is a gentle reminder that even the warmest climates can embrace mild winter-like patterns. The weather begins to stabilize: sunshine hours, wind speed, and relative humidity exhibit consistency. The city's ambiance shifts from vibrant to serene as the flora starts to tone down, adopting hues of autumn. Weather in November »
Weather in December
The last month of the year, December, emanates a festive spirit. The Hawaiian climate shifts from a minor chill to blissful warmth, the city gets a fresh splash of greenery courtesy of the frequent drizzles. Daylight hours slump to 10.8 hours, yet the city finds its merriment in the shorter days. Weather in December »
Updated: Aug 28, 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
How much does it rain?
In Aiea, during the entire year, the rain falls for 197.2 days and collects up to 14.61" (371mm) of precipitation.
What are the months with the lowest UV index?
The months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6.
What is the coldest time of year?
The lowest level of Aiea's temperatures is noted during February and March, averaging a high-temperature of 75°F (23.9°C).
What is the most humid month?
February and December, with an average relative humidity of 76%, are most humid months.
What is the rainiest month?
The wettest months are March and October, with an average 1.81" (46mm) of rainfall.
What month is the ocean coldest?
The month with the coldest seawater is March, with an average ocean temperature of 75.7°F (24.3°C).
What are the least humid months?
April, May, September and November, with an average relative humidity of 74%, are the least humid months.
When are the longest days?
June has the longest days of the year, with an average of 13h and 24min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 10.8h of sunshine.
What is the driest month?
The month with the least rainfall is July, when the rain falls for 16.4 days and typically collects 0.67" (17mm) of precipitation.
When is the highest UV index?
The months with the highest UV index are July through September, with an average maximum UV index of 7.
What are the warmest months?
With average high and low temperatures of 81.5°F (27.5°C) and 75.6°F (24.2°C) respectively, September is Aiea's warmest month.
When is the ocean warmest?
The month with the warmest seawater is September, with an average ocean temperature of 80.4°F (26.9°C).
What are the months with the least sunshine?
The months with the least sunshine in Aiea are November and December, with an average of 6.5h of sunshine.
What is the month with the shortest days?
December has the shortest days of the year in Aiea, with an average of 10h and 54min of daylight.
Is there Daylight Saving Time (DST)?
Aiea does not observe Daylight Saving Time (DST). HST timezone is used over the entire year.
Average temperature
Aiea, HI
The warmest month (with the highest average high temperature) is September (81.5°F).
The months with the lowest average high temperature are February and March (75°F).
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is February (69.1°F).
Average pressure
Aiea, HI
- Average pressure in January:
30"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30"Hg - Average pressure in December:
30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed
Aiea, HI
- Average wind speed in January:
9mph - Average wind speed in February:
10mph - Average wind speed in March:
11.2mph - Average wind speed in April:
11mph - Average wind speed in May:
9.7mph - Average wind speed in June:
11.8mph
- Average wind speed in July:
12.1mph - Average wind speed in August:
11.4mph - Average wind speed in September:
9.9mph - Average wind speed in October:
9.2mph - Average wind speed in November:
10.9mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is July (12.1mph).
The calmest month (with the lowest average wind speed) is January (9mph).
Average humidity
Aiea, HI
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, September and November (74%).
Average rainfall
Aiea, HI
- Average rainfall in January:
0.98" - Average rainfall in February:
1.42" - Average rainfall in March:
1.81" - Average rainfall in April:
1.02" - Average rainfall in May:
1.18" - Average rainfall in June:
0.94"
- Average rainfall in July:
0.67" - Average rainfall in August:
0.98" - Average rainfall in September:
1.22" - Average rainfall in October:
1.81" - Average rainfall in November:
1.02" - Average rainfall in December:
1.54"
The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").
Average rainfall days
Aiea, HI
- Average rainfall days in January:
12.6 days - Average rainfall days in February:
15.7 days - Average rainfall days in March:
18 days - Average rainfall days in April:
17.3 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
17.9 days - Average rainfall days in October:
18 days - Average rainfall days in November:
16.1 days - Average rainfall days in December:
15.7 days
The months with the highest number of rainy days are March and October (18 days).
The month with the least rainy days is January (12.6 days).
Average sea temperature
Aiea, HI
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight / Average sunshine
Aiea, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 1min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 2min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
10h and 5min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January:
8h and 3min - Average sunshine in February:
8h and 1min - Average sunshine in March:
8h and 0min - Average sunshine in April:
8h and 2min - Average sunshine in May:
10h and 2min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
8h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
8h and 1min - Average sunshine in November:
6h and 3min - Average sunshine in December:
6h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days
Aiea, HI
- Average sunshine days in January:
12.8 days - Average sunshine days in February:
8.7 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
9.3 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
7.4 days - Average sunshine days in September:
6.9 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
7.1 days - Average sunshine days in December:
9.6 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).
Average UV index
Aiea, HI
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, October, November and December (UV index 6).
Average cloud cover
Aiea, HI
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are January and September (Cloud cover 33).
Average visibility
Aiea, HI
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).
Aiea, Hawaii, USA
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