Hawaii, USA: Annual Weather Averages
August is the hottest month in Hawaii with an average temperature of 27°C (81°F) and the coldest is January at 23°C (73°F) with the most daily sunshine hours at 11 in July. The wettest month is November with an average of 124mm of rain. The best month to swim in the sea is in August when the average sea temperature is 27°C (81°F).
Average Temperature: Hawaii
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 23 | 23 | 24 | 24 | 25 | 26 | 26 | 27 | 27 | 27 | 25 | 24 |
| °F | 73 | 73 | 75 | 75 | 77 | 79 | 79 | 81 | 81 | 81 | 77 | 75 |
Average High/Low Temperature: Hawaii
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 29 | 29 | 29 | 27 | 26 |
| Low °C | 20 | 20 | 21 | 21 | 22 | 23 | 24 | 24 | 24 | 24 | 23 | 21 |
| High °F | 79 | 79 | 79 | 79 | 81 | 82 | 82 | 84 | 84 | 84 | 81 | 79 |
| Low °F | 68 | 68 | 70 | 70 | 72 | 73 | 75 | 75 | 75 | 75 | 73 | 70 |
Average Rainfall: Hawaii
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 78 | 90 | 88 | 52 | 38 | 43 | 57 | 34 | 61 | 80 | 124 | 87 |
| Days | 14 | 11 | 13 | 12 | 11 | 12 | 14 | 13 | 13 | 13 | 13 | 15 |
Average Daily Sunshine Hours: Hawaii
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 8 | 8 | 9 | 9 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 |
Average Sea Temperature: Hawaii
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 25 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 26 | 25 |
| °F | 77 | 75 | 75 | 77 | 77 | 79 | 79 | 81 | 81 | 81 | 79 | 77 |
