Osaka Weather by Month
Twelve months of Osaka, Japan weather — averages from 2006–2025.
Osaka's warmest month is August (average high 32.3°C (90.1°F)) and the coolest is January (8.6°C (47.5°F)). The most rain falls in July (about 220 mm), and January is the driest (about 51 mm). August is the sunniest, with about 10.7 hours of sunshine a day.
Best months to visit Osaka
Ranked within Osaka's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
Osaka month by month
January
FairHigh 8.6°C (47.5°F)
Low 1.1°C (34°F)
- Rainfall
- 51 mm (2 in)
- Rainy days
- 6 rainy days
- Sunshine
- 7.9 h sunshine / day
February
FairHigh 9.7°C (49.5°F)
Low 1.3°C (34.3°F)
- Rainfall
- 72 mm (2.8 in)
- Rainy days
- 8 rainy days
- Sunshine
- 7.9 h sunshine / day
March
GoodHigh 13.5°C (56.3°F)
Low 4.2°C (39.6°F)
- Rainfall
- 115 mm (4.5 in)
- Rainy days
- 11 rainy days
- Sunshine
- 8.7 h sunshine / day
April
GoodHigh 18.4°C (65.1°F)
Low 9°C (48.2°F)
- Rainfall
- 137 mm (5.4 in)
- Rainy days
- 11 rainy days
- Sunshine
- 8.8 h sunshine / day
May
GoodHigh 23°C (73.4°F)
Low 14.2°C (57.6°F)
- Rainfall
- 163 mm (6.4 in)
- Rainy days
- 11 rainy days
- Sunshine
- 9.4 h sunshine / day
June
GoodHigh 26.6°C (79.9°F)
Low 19.1°C (66.4°F)
- Rainfall
- 210 mm (8.3 in)
- Rainy days
- 13 rainy days
- Sunshine
- 8.7 h sunshine / day
July
FairHigh 30.3°C (86.5°F)
Low 23.8°C (74.8°F)
- Rainfall
- 220 mm (8.7 in)
- Rainy days
- 16 rainy days
- Sunshine
- 9.6 h sunshine / day
August
FairHigh 32.3°C (90.1°F)
Low 25.1°C (77.2°F)
- Rainfall
- 135 mm (5.3 in)
- Rainy days
- 12 rainy days
- Sunshine
- 10.7 h sunshine / day
September
GoodHigh 28.6°C (83.5°F)
Low 21.3°C (70.3°F)
- Rainfall
- 189 mm (7.5 in)
- Rainy days
- 13 rainy days
- Sunshine
- 8.9 h sunshine / day
October
GreatHigh 22.6°C (72.7°F)
Low 14.8°C (58.6°F)
- Rainfall
- 162 mm (6.4 in)
- Rainy days
- 10 rainy days
- Sunshine
- 8.1 h sunshine / day
November
GoodHigh 16.6°C (61.9°F)
Low 8.6°C (47.5°F)
- Rainfall
- 86 mm (3.4 in)
- Rainy days
- 8 rainy days
- Sunshine
- 7.8 h sunshine / day
December
FairHigh 11°C (51.8°F)
Low 3.4°C (38.1°F)
- Rainfall
- 65 mm (2.6 in)
- Rainy days
- 7 rainy days
- Sunshine
- 7.8 h sunshine / day
More Japan cities by month
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.