Monthly weather forecast and climate
Honolulu, HI

Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance

Weather in January

January, the same as December, is a moderately hot winter month in Honolulu, Hawaii, with average temperature fluctuating between 70°F (21.1°C) and 75.7°F (24.3°C). In January, the average high-temperature is essentially 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 also a moderately hot month in Honolulu, Hawaii, with temperature in the range of an average low of 69.1°F (20.6°C) and an average high of 75°F (23.9°C). February and March, with an average high-temperature of 75°F (23.9°C), are the coldest months. Weather in February »

Weather in March

The first month of the spring, March, is also a moderately hot month in Honolulu, Hawaii, with average temperature varying between 69.4°F (20.8°C) and 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, the same as March, is a moderately hot spring month in Honolulu, Hawaii, with average temperature varying between 76.6°F (24.8°C) and 71.4°F (21.9°C). In April, the average high-temperature is practically the same as in March - a still moderately hot 76.6°F (24.8°C). Weather in April »

Weather in May

May, the last month of the spring, in Honolulu, is also a moderately hot month, with average temperature fluctuating between 72.7°F (22.6°C) and 78.4°F (25.8°C). In Honolulu, Hawaii, the average high-temperature in May 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 Honolulu, Hawaii, with average temperature fluctuating between 79.5°F (26.4°C) and 74.3°F (23.5°C). In June, the average high-temperature 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 Honolulu, Hawaii, is a moderately hot summer month, with average temperature ranging between max 80.4°F (26.9°C) and min 75°F (23.9°C). In Honolulu, the average high-temperature is almost the same as in June - a still moderately hot 80.4°F (26.9°C). Weather in July »

Weather in August

August, the last month of the summer, in Honolulu, is also a moderately hot month, with average temperature fluctuating between 75.7°F (24.3°C) and 81.3°F (27.4°C). In August, the average high-temperature is practically 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 still a warm month in Honolulu, Hawaii, with average temperature fluctuating between 75.6°F (24.2°C) and 81.5°F (27.5°C). With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 75.6°F (24.2°C), September is the warmest month. The average heat index is estimated at a hot 86.4°F (30.2°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Honolulu, Hawaii, with temperature in the range of an average low of 75.6°F (24.2°C) and an average high of 81°F (27.2°C). In Honolulu, the average high-temperature in October is almost the same as in September - a still warm 81°F (27.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another warm month in Honolulu, Hawaii, with average temperature varying between 73.6°F (23.1°C) and 78.8°F (26°C). In Honolulu, the average high-temperature in November is essentially the same as in October - a still warm 78.8°F (26°C). Weather in November »

Weather in December

December, the first month of the winter, in Honolulu, is also a moderately hot month, with average temperature fluctuating between 71.4°F (21.9°C) and 76.5°F (24.7°C). In December, the average high-temperature is relatively 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 Honolulu?

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

What are the months with the lowest UV index in Honolulu?

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

What are the coldest months in Honolulu?

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 Honolulu?

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

What is the wettest month in Honolulu?

Months with the most rainfall are March and October, with an average 1.81" (46mm) of precipitation.

What is the month with the coldest ocean in Honolulu?

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

What are the least humid months in Honolulu?

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

When are the longest days in Honolulu?

With an average of 13.4h of daylight, June has the longest days of the year.

What month has the most sunshine in Honolulu?

June has the most sunshine of the year, with an average of 10.8h of sunshine.

What is the driest month in Honolulu?

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

What are the months with the highest UV index in Honolulu?

Months with the highest UV index in Honolulu are July through September, with an average maximum UV index of 7.

What is the warmest month in Honolulu?

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

When is the ocean warmest in Honolulu?

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

What is the month with the least sunshine in Honolulu?

November and December, with an average of 6.5h of sunshine, are months with the least sunshine.

What is the month with the shortest days in Honolulu?

With an average of 10.9h of daylight, December has the shortest days of the year in Honolulu, Hawaii.

Average temperature
Honolulu, HI

Average temperature - Honolulu, HI

The warmest month (with the highest average high temperature) is September (27.5°C).
Months with the lowest average high temperature are February and March (23.9°C).

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is February (20.6°C).

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Average pressure
Honolulu, HI

Average pressure - Honolulu, HI

The month with the highest atmospheric pressure is April (1017.8mbar).
The month with the lowest atmospheric pressure is October (1014.9mbar).

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Average wind speed
Honolulu, HI

Average wind speed - Honolulu, HI

The windiest month (with the highest average wind speed) is July (19.4km/h).
The calmest month (with the lowest average wind speed) is January (14.5km/h).

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Average humidity
Honolulu, HI

Average humidity - Honolulu, HI

Months with the highest relative humidity are February and December (76%).
Months with the lowest relative humidity are April, May, September and November (74%).

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Average rainfall
Honolulu, HI

Average rainfall - Honolulu, HI

The wettest months (with the highest rainfall) are March and October (46mm).
The driest month (with the least rainfall) is July (17mm).

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Average rainfall days
Honolulu, HI

Average rainfall days - Honolulu, HI

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
Honolulu, HI

Average sea temperature - Honolulu, HI

The best month for swimming (with the highest average sea temperature) is September (26.9°C).
The coldest month (with the lowest average sea temperature) is March (24.3°C).

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Average daylight / Average sunshine
Honolulu, HI

Average daylight / Average sunshine - Honolulu, HI

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.9h).

The month with the most sunshine is June (Average sunshine: 10.8h).
Months with the least sunshine are November and December (Average sunshine: 6.5).

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Average sunshine days
Honolulu, HI

Average sunshine days - Honolulu, 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
Honolulu, HI

Average UV index - Honolulu, HI

Months with the highest UV index are July, August and September (UV index 7).
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
Honolulu, HI

Average visibility - Honolulu, HI

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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