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Japan climate by month
8-year averages · when to visit| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tokyo | 9° | 11° | 15° | 19° | 23° | 26° | 31° | 32° | 28° | 22° | 17° | 12° |
| Kyoto | 8° | 9° | 14° | 19° | 23° | 27° | 31° | 33° | 29° | 22° | 17° | 11° |
| Osaka | 9° | 10° | 14° | 19° | 23° | 27° | 31° | 33° | 30° | 23° | 18° | 12° |
| Kitakyushu | 9° | 9° | 14° | 18° | 22° | 26° | 30° | 31° | 28° | 22° | 17° | 11° |
| Niigata | 6° | 6° | 11° | 15° | 20° | 24° | 29° | 30° | 27° | 20° | 15° | 9° |
| Hamamatsu | 10° | 11° | 15° | 19° | 22° | 25° | 29° | 31° | 28° | 23° | 18° | 13° |
| Kumamoto | 10° | 12° | 17° | 21° | 24° | 27° | 31° | 32° | 30° | 25° | 19° | 12° |
| Aihara | 9° | 10° | 14° | 18° | 21° | 25° | 30° | 31° | 27° | 21° | 16° | 11° |
| Okayama | 10° | 10° | 15° | 21° | 24° | 28° | 32° | 33° | 30° | 24° | 18° | 12° |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tokyo | 5 | 7 | 12 | 11 | 13 | 15 | 17 | 14 | 15 | 13 | 8 | 7 |
| Kyoto | 8 | 7 | 12 | 11 | 12 | 14 | 17 | 13 | 15 | 11 | 6 | 7 |
| Osaka | 6 | 7 | 11 | 10 | 12 | 14 | 17 | 14 | 15 | 11 | 7 | 7 |
| Kitakyushu | 10 | 10 | 12 | 11 | 12 | 15 | 18 | 16 | 15 | 9 | 8 | 9 |
| Niigata | 25 | 20 | 16 | 13 | 14 | 12 | 14 | 14 | 15 | 16 | 19 | 25 |
| Hamamatsu | 6 | 6 | 11 | 11 | 13 | 15 | 17 | 14 | 18 | 14 | 9 | 6 |
| Kumamoto | 7 | 8 | 12 | 12 | 14 | 16 | 18 | 18 | 13 | 10 | 8 | 7 |
| Aihara | 6 | 6 | 13 | 14 | 16 | 16 | 15 | 17 | 15 | 13 | 7 | 6 |
| Okayama | 4 | 7 | 10 | 10 | 11 | 13 | 13 | 13 | 12 | 9 | 5 | 5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tokyo | 11° | 11° | 12° | 15° | 19° | 22° | 27° | 28° | 27° | 23° | 18° | 14° |
| Osaka | 9° | 9° | 10° | 15° | 19° | 23° | 29° | 30° | 29° | 24° | 18° | 13° |
| Kitakyushu | 13° | 12° | 12° | 16° | 19° | 23° | 28° | 30° | 29° | 25° | 19° | 15° |
| Niigata | 11° | 9° | 10° | 12° | 16° | 22° | 27° | 29° | 28° | 23° | 18° | 14° |
| Hamamatsu | 16° | 15° | 15° | 17° | 19° | 23° | 26° | 27° | 27° | 25° | 21° | 17° |
| Kumamoto | 11° | 9° | 11° | 15° | 19° | 23° | 29° | 29° | 29° | 26° | 20° | 16° |
| Okayama | 10° | 8° | 10° | 14° | 18° | 22° | 27° | 30° | 29° | 25° | 19° | 14° |
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
Tokyo climate in September
8-year averages · when to visitBest months: June–September · September: Good
| August | September | October | |
|---|---|---|---|
| Average temperature | ▼ 28°C | 24°C | ▼ 18°C |
| Typical high | ▼ 32°C | 28°C | ▼ 22°C |
| Typical low | ▼ 25°C | 21°C | ▼ 14°C |
| Water temperature | ▼ 28.4°C | 27.2°C | ▼ 22.5°C |
| Precipitation | ▲ 124 mm | 215 mm | ▼ 185 mm |
| Wet days | ▲ 14 d | 15 d | ▼ 13 d |
| Humidity | ▲ 72% | 77% | ▲ 79% |
| Sunshine per day | ▼ 10.5 h | 7.8 h | ▼ 6.8 h |
| Cloud cover | ▲ 22% | 37% | ▲ 39% |
| Midday UV | ▼ 10 | 9 | ▼ 6 |
| Daylight | 13:29 | 12:24 | 11:17 |
| Our take | Good | Good | Acceptable |
September temperatures day by day daily mean + smoothed trend · °C
September precipitation day by day mm
September UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
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Updated: 11:00 PM
Japan · 15 weather points · Climate reference: Tokyo (35.68°N, 139.65°E) · Asia/Tokyo