Osaka, Japan: Annual Weather Averages
August is the hottest month in Osaka with an average temperature of 29°C (84°F) and the coldest is January at 6°C (43°F) with the most daily sunshine hours at 6.7 in August. The wettest month is June with an average of 230mm of rain. The best month to swim in the sea is in August when the average sea temperature is 28°C (82°F).
Average Temperature: Osaka
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 6 | 6 | 10 | 15 | 20 | 24 | 28 | 29 | 25 | 19 | 14 | 9 |
| °F | 43 | 43 | 49 | 59 | 68 | 75 | 82 | 84 | 77 | 66 | 56 | 47 |
Average High/Low Temperature: Osaka
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 9 | 9 | 13 | 19 | 24 | 28 | 31 | 33 | 29 | 23 | 17 | 12 |
| Low °C | 3 | 3 | 6 | 11 | 16 | 20 | 24 | 25 | 21 | 15 | 10 | 5 |
| High °F | 48 | 48 | 55 | 66 | 75 | 82 | 88 | 91 | 84 | 73 | 63 | 54 |
| Low °F | 37 | 37 | 43 | 52 | 61 | 68 | 75 | 77 | 70 | 59 | 50 | 41 |
Average Rainfall: Osaka
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 50 | 70 | 110 | 130 | 150 | 230 | 140 | 90 | 170 | 110 | 70 | 30 |
| Days | 16 | 15 | 17 | 14 | 14 | 17 | 15 | 13 | 16 | 14 | 12 | 14 |
Average Daily Sunshine Hours: Osaka
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 5 | 5 | 5 | 6 | 6 | 5 | 6 | 7 | 5 | 5 | 5 | 5 |
Average Sea Temperature: Osaka
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 9 | 10 | 13 | 18 | 20 | 21 | 25 | 28 | 26 | 22 | 15 | 12 |
| °F | 48 | 50 | 55 | 64 | 68 | 70 | 77 | 82 | 79 | 72 | 59 | 54 |
