Climate and monthly weather forecast
Aiea, HI

Weather in January

January, the same as December, is another warm winter month in Aiea, Hawaii, with an average temperature fluctuating between 70°F (21.1°C) and 75.7°F (24.3°C). In Aiea, Hawaii, the average high-temperature in January is relatively the same as in December - a still moderately hot 75.7°F (24.3°C). Weather in January »

Weather in February

The last month of the winter, February, is another warm month in Aiea, Hawaii, with an average temperature ranging between min 69.1°F (20.6°C) and max 75°F (23.9°C). The coldest months are February and March, with an average high-temperature of 75°F (23.9°C). Weather in February »

Weather in March

March, the first month of the spring in Aiea, is also a moderately hot month, with an average temperature ranging between min 69.4°F (20.8°C) and max 75°F (23.9°C). The coldest months are February and March, with an average high-temperature of 75°F (23.9°C). Weather in March »

Weather in April

April, like March, in Aiea, Hawaii, is another warm spring month, with an average temperature ranging between max 76.6°F (24.8°C) and min 71.4°F (21.9°C). In April, the average high-temperature is essentially the same as in March - a still warm 76.6°F (24.8°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Aiea, Hawaii, with an average temperature fluctuating between 78.4°F (25.8°C) and 72.7°F (22.6°C). In May, the average high-temperature is practically the same as in April - a still moderately hot 78.4°F (25.8°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Aiea, Hawaii, with an average temperature ranging between min 74.3°F (23.5°C) and max 79.5°F (26.4°C). In Aiea, Hawaii, the average high-temperature in June is almost the same as in May - a still warm 79.5°F (26.4°C). Weather in June »

Weather in July

July, like June, in Aiea, Hawaii, is a moderately hot summer month, with temperature in the range of an average low of 75°F (23.9°C) and an average high of 80.4°F (26.9°C). In July, the average high-temperature is practically the same as in June - a still warm 80.4°F (26.9°C). Weather in July »

Weather in August

August, the last month of the summer in Aiea, is also a moderately hot month, with temperature in the range of an average low of 75.7°F (24.3°C) and an average high of 81.3°F (27.4°C). In Aiea, the average high-temperature in August is almost the same as in July - a still warm 81.3°F (27.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Aiea, Hawaii, with an average temperature varying between 81.5°F (27.5°C) and 75.6°F (24.2°C). September is the warmest month, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 75.6°F (24.2°C). In September, the average heat index is calculated to be a hot 86.4°F (30.2°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Aiea, Hawaii, with an average temperature ranging between max 81°F (27.2°C) and min 75.6°F (24.2°C). In Aiea, the average high-temperature in October is practically the same as in September - a still warm 81°F (27.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Aiea, is another warm month, with an average temperature ranging between min 73.6°F (23.1°C) and max 78.8°F (26°C). In November, the average high-temperature is almost the same as in October - a still moderately hot 78.8°F (26°C). Weather in November »

Weather in December

December, the first month of the winter in Aiea, is also a moderately hot month, with an average temperature ranging between max 76.5°F (24.7°C) and min 71.4°F (21.9°C). In December, the average high-temperature is practically the same as in November - a still moderately hot 76.5°F (24.7°C). Weather in December »
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FAQ

How much does it rain in Aiea?

Throughout the year, in Aiea, Hawaii, there are 197.2 rainfall days, and 14.61" (371mm) of precipitation is accumulated.

What is the month with the lowest UV index in Aiea?

January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Aiea.

What are the coldest months in Aiea?

February and March, with an average high-temperature of 75°F (23.9°C), are the coldest months.

What are the most humid months in Aiea?

February and December, with an average relative humidity of 76%, are most humid months in Aiea.

What is the wettest month in Aiea?

The months with the most rainfall in Aiea, Hawaii, are March and October, with an average 1.81" (46mm) of precipitation.

When is the ocean coldest in Aiea?

With an average ocean temperature of 75.7°F (24.3°C), March is the month with the coldest seawater in Aiea, Hawaii.

What are the least humid months in Aiea?

The months with the lowest humidity are April, May, September and November, with an average relative humidity of 74%.

When are the longest days in Aiea?

The month with the longest days in Aiea is June, with an average of 13h and 25min of daylight.

What month has the most sunshine in Aiea?

The month with the most sunshine is June, with an average of 10.8h of sunshine.

What is the driest month in Aiea?

The month with the least rainfall in Aiea, Hawaii, is July, when the rain falls for 16.4 days and typically collects 0.67" (17mm) of precipitation.

What is the month with the highest UV index in Aiea?

July through September, with an average maximum UV index of 7, are months with the highest UV index in Aiea, Hawaii.

What is the warmest month in Aiea?

September is the warmest month in Aiea, Hawaii, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 75.6°F (24.2°C).

When is the ocean warmest in Aiea?

With an average ocean temperature of 80.4°F (26.9°C), September is the month with the warmest seawater in Aiea.

What is the month with the least sunshine in Aiea?

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 in Aiea?

The month with the shortest days in Aiea, Hawaii, is December, with an average of 10h and 52min of daylight.

Is there Daylight Saving Time (DST) in Aiea?

Aiea does not observe Daylight Saving Time (DST). HST timezone is used throughout the entire year.

Average temperature
Aiea, HI

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).

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Average pressure
Aiea, HI

Average pressure - Aiea, HI

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).

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Average wind speed
Aiea, HI

Average wind speed - Aiea, HI

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).

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Average humidity
Aiea, HI

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%).

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Average rainfall
Aiea, HI

Average rainfall - Aiea, HI

The wettest months (with the highest rainfall) are March and October (1.81").
The driest month (with the least rainfall) is July (0.67").

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Average rainfall days
Aiea, HI

Average rainfall days - Aiea, HI

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).

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Average sea temperature
Aiea, HI

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).

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Average daylight / Average sunshine
Aiea, HI

Average daylight / Average sunshine - Aiea, HI

The month with the longest days is June (Average daylight: 13h and 25min).
The month with the shortest days is December (Average daylight: 10h and 52min).

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).

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Average sunshine days
Aiea, HI

Average sunshine days - Aiea, HI

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is October (6.3 days).

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Average UV index
Aiea, HI

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).

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Average visibility
Aiea, HI

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).

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