Honolulu
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Honolulu, HI

Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
Waikiki beach viewed from above, with clear calm waters on the foot of Honolulu city, Hawaii, with the vast cityscape and mountains in the distance
January, the same as December, is another warm winter month in Honolulu, Hawaii, with average temperature fluctuating between 70°F (21.1°C) and 75.7°F (24.3°C). In Honolulu, the average high-temperature is relatively the same as in December - a still warm 75.7°F (24.3°C). Weather in January »

February, the last month of the winter, in Honolulu, is also a moderately hot month, with average temperature varying between 69.1°F (20.6°C) and 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 »

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

April, the same as March, is a moderately hot spring month in Honolulu, Hawaii, with average temperature fluctuating between 71.4°F (21.9°C) and 76.6°F (24.8°C). In Honolulu, the average high-temperature in April is essentially the same as in March - a still moderately hot 76.6°F (24.8°C). Weather in April »

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

The first month of the summer, June, is still a warm month in Honolulu, Hawaii, with average temperature varying between 79.5°F (26.4°C) and 74.3°F (23.5°C). In June, the average high-temperature is relatively the same as in May - a still moderately hot 79.5°F (26.4°C). Weather in June »

July, like June, in Honolulu, Hawaii, is another warm summer month, with average temperature fluctuating between 75°F (23.9°C) and 80.4°F (26.9°C). In July, the average high-temperature is almost the same as in June - a still moderately hot 80.4°F (26.9°C). Weather in July »

The last month of the summer, August, is also a moderately hot month in Honolulu, Hawaii, with average temperature fluctuating between 75.7°F (24.3°C) and 81.3°F (27.4°C). In Honolulu, the average high-temperature is relatively the same as in July - a still moderately hot 81.3°F (27.4°C). Weather in August »

September, the first month of the autumn, in Honolulu, is still a warm month, 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. In September, the average heat index is calculated to a tropical 86.4°F (30.2°C). Weather in September »

October, like September, in Honolulu, Hawaii, is another warm autumn month, with average temperature varying between 81°F (27.2°C) and 75.6°F (24.2°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 »

November, the last month of the autumn, in Honolulu, is also a moderately hot month, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 73.6°F (23.1°C). In Honolulu, the average high-temperature in November is essentially the same as in October - a still moderately hot 78.8°F (26°C). Weather in November »

The first month of the winter, December, is also a moderately hot month in Honolulu, Hawaii, with average temperature fluctuating between 71.4°F (21.9°C) and 76.5°F (24.7°C). In Honolulu, Hawaii, the average high-temperature is essentially the same as in November - a still moderately hot 76.5°F (24.7°C). Weather in December »

How many days does it rain in Honolulu?

In Honolulu, Hawaii, during the entire year, the rain falls for 197.2 days and collects up to 14.61" (371mm) of precipitation.

What is the month 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.

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 in Honolulu, Hawaii.

What is the most humid month in Honolulu?

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

What is the rainiest month in Honolulu?

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

What month is the ocean coldest in Honolulu?

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

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?

June has the longest days of the year in Honolulu, with an average of 13.4h of daylight.

What month has the most sunshine in Honolulu?

With an average of 10.8h of sunshine, June has the most sunshine of the year in Honolulu, Hawaii.

What is the driest month in Honolulu?

July is the month with the least rainfall in Honolulu. Rain falls for 16.4 days and accumulates 0.67" (17mm) of precipitation.

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

Months with the highest UV index in Honolulu, Hawaii, 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 in Honolulu, Hawaii.

What is the month with the warmest ocean 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?

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

What is the month with the shortest days in Honolulu?

The month with the shortest days is December, with an average of 10.9h of daylight.
Average temperature - 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%).

Average rainfall - Honolulu, HI

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

Average rainfall days - Honolulu, HI

Months with the highest number of rainy days are March and October (18 days).
The month with the lowest number of rainy days is January (12.6 days).

Average sea temperature - Honolulu, 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 - Honolulu, HI

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

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

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).