Monthly weather forecast and climate
Honolulu, HI
Contents
- 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
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, like December, in Honolulu, Hawaii, is a moderately hot winter month, with average temperature ranging between max 75.7°F (24.3°C) and min 70°F (21.1°C). In Honolulu, the average high-temperature in January 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 average temperature varying between 75°F (23.9°C) and 69.1°F (20.6°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 still a warm month in Honolulu, Hawaii, with temperature in the range of an average low of 69.4°F (20.8°C) and an average high of 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 ranging between min 71.4°F (21.9°C) and max 76.6°F (24.8°C). In April, the average high-temperature is relatively 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 another warm month in Honolulu, Hawaii, with average temperature fluctuating between 72.7°F (22.6°C) and 78.4°F (25.8°C). In Honolulu, the average high-temperature in May is practically the same as in April - a still warm 78.4°F (25.8°C). Weather in May »
Weather in June
June, the first month of the summer, in Honolulu, is still a warm month, with average temperature fluctuating between 79.5°F (26.4°C) and 74.3°F (23.5°C). In Honolulu, the average high-temperature is essentially 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 another warm 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 Honolulu, the average high-temperature is essentially the same as in June - a still warm 80.4°F (26.9°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Honolulu, Hawaii, 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 August, the average high-temperature is relatively the same as in July - a still warm 81.3°F (27.4°C). Weather in August »
Weather in September
September, the first month of the autumn, in Honolulu, is also a moderately hot month, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 75.6°F (24.2°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 in September is evaluated at a hot 86.4°F (30.2°C). Weather in September »
Weather in October
October, like September, in Honolulu, Hawaii, is another warm autumn month, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 75.6°F (24.2°C). In Honolulu, the average high-temperature is essentially 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 also a moderately hot month in Honolulu, Hawaii, with average temperature fluctuating between 73.6°F (23.1°C) and 78.8°F (26°C). In Honolulu, the average high-temperature in November is almost the same as in October - a still warm 78.8°F (26°C). Weather in November »
Weather in December
The first month of the winter, December, is also a moderately hot month in Honolulu, Hawaii, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 71.4°F (21.9°C). In Honolulu, the average high-temperature in December is relatively the same as in November - a still warm 76.5°F (24.7°C). Weather in December »
[Resources]FAQ
How much does it rain in Honolulu?
In Honolulu, 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?
Months with the lowest UV index are January through June, October through December, with an average maximum UV index of 6.
What are the coldest months in Honolulu?
The coldest months in Honolulu, Hawaii, are February and March, with an average high-temperature of 75°F (23.9°C).
What are the most humid months in Honolulu?
Months with the highest humidity are February and December, with an average relative humidity of 76%.
What is the rainiest month in Honolulu?
The wettest months are March and October, with an average 1.81" (46mm) of rainfall.
What month is the ocean coldest in Honolulu?
The month with the coldest seawater in Honolulu is March, with an average ocean temperature of 75.7°F (24.3°C).
What are the least humid months in Honolulu?
April, May, September and November, with an average relative humidity of 74%, are the least humid months in Honolulu, Hawaii.
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?
June has the most sunshine of the year in Honolulu, Hawaii, with an average of 10.8h of sunshine.
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 are the months with the highest UV index in Honolulu?
July through September, with an average maximum UV index of 7, are months with the highest UV index.
What is the warmest month in Honolulu?
The warmest month in Honolulu, Hawaii, is September, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 75.6°F (24.2°C).
What is the month with the warmest ocean in Honolulu?
September is the month with the warmest seawater in Honolulu, 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 in Honolulu, Hawaii.
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.
Average temperature
Honolulu, HI
The warmest month (with the highest average high temperature) is September (81.5°F).
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
Honolulu, HI
- Average pressure in January:
30" - Average pressure in February:
30.01" - Average pressure in March:
30.05" - Average pressure in April:
30.06" - Average pressure in May:
30.04" - Average pressure in June:
30.03"
- Average pressure in July:
30.01" - Average pressure in August:
29.98" - Average pressure in September:
29.97" - Average pressure in October:
29.97" - Average pressure in November:
30" - Average pressure in December:
30"
The month with the highest atmospheric pressure is April (30.06").
Months with the lowest atmospheric pressure are September and October (29.97").
Average wind speed
Honolulu, 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
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
- 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
Honolulu, 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
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
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
- Average daylight in January:
11h - Average daylight in February:
11.5h - Average daylight in March:
12.1h - Average daylight in April:
12.7h - Average daylight in May:
13.2h - Average daylight in June:
13.4h
- Average daylight in July:
13.3h - Average daylight in August:
12.8h - Average daylight in September:
12.3h - Average daylight in October:
11.6h - Average daylight in November:
11.1h - Average daylight in December:
10.9h
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).
Average sunshine days
Honolulu, 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
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).
Average cloud cover
Honolulu, HI
The month with the most cloud cover is March (Cloud cover 40).
Months with the least cloud cover are January and September (Cloud cover 33).
Average visibility
Honolulu, HI
Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
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