Osaka climate at a glance
Osaka sees average daytime highs ranging from 9°C in January to 33°C in August. Around 1792 mm of precipitation falls over roughly 129 wet days a year, peaking in July (275 mm) and easing off in December (49 mm). August is the sunniest month at about 10 hours of sunshine.
Osaka temperature & rainfall by month
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Weather seasons in Osaka
Grouped by the monthly travel score — purely weather-based, not crowd or price data.
Osaka climate, month by month
Averages computed from ERA5 reanalysis data, 2019–2024. Daylight on the 15th: 10.1 h in November. Reuse this data freely with attribution — download as JSON or CSV.
| Month | High | Low | Rain days | Rainfall | Sun/day | Humidity | Score |
|---|---|---|---|---|---|---|---|
| January | 9°C | 1°C | 6.8 | 49 mm | 7.3 h | 74% | 4.8 · Poor |
| February | 11°C | 2°C | 6.8 | 71 mm | 7.4 h | 73% | 5.5 · Fair |
| March | 14°C | 5°C | 11.2 | 121 mm | 8.2 h | 73% | 6.7 · Fair |
| April | 19°C | 9°C | 9.5 | 159 mm | 8.7 h | 72% | 9.2 · Excellent |
| May | 23°C | 14°C | 12 | 206 mm | 9.2 h | 74% | 8.7 · Excellent |
| June | 27°C | 19°C | 13.8 | 231 mm | 8.8 h | 78% | 8.3 · Good |
| July | 30°C | 24°C | 17.7 | 275 mm | 9.2 h | 80% | 4.3 · Poor |
| August | 33°C | 26°C | 15 | 188 mm | 10.4 h | 75% | 3.3 · Poor |
| September | 30°C | 23°C | 13.2 | 167 mm | 9.3 h | 76% | 5.8 · Fair |
| October | 23°C | 15°C | 10 | 189 mm | 8.1 h | 76% | 9.0 · Excellent |
| November | 18°C | 9°C | 7 | 86 mm | 8.1 h | 76% | 9.5 · Excellent |
| December | 12°C | 3°C | 5.8 | 49 mm | 8 h | 73% | 6.4 · Fair |
Frequently asked questions
What is the best time to visit Osaka?
The best time to visit Osaka is April–May & October–November, when daytime highs average around 18°C with about 7 rainy days per month.
What is the hottest month in Osaka?
August is the hottest month in Osaka, with average highs of 33°C.
What is the rainiest month in Osaka?
July is the rainiest month in Osaka, with around 275 mm of rainfall over 17.7 rainy days.
Where should you go next month?
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