Japan
Osaka in September: weather & travel advice
This month's data profile
Rain shapes the decision
Osaka in September is climatically well suited to family holidays. The average daily high is around 27 °C. With about 16 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
62/100 · #5
Warmth
#3
Dryness
#11
Sun
#6
Published best categories: Family
Osaka · SeptemberPhoto: Manish Prabhune · CC BY-SA 4.0Climate facts
- Average high
- 27 °C
- Average low
- 19 °C
- Rainy days (est.)
- 16 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| August | 30 | 22 | 16 | 181 | 6.5 | 84 | 1.5 | 51 |
| September (selected) | 27 | 19 | 16 | 226 | 5.1 | 84 | 1.6 | 62 |
| October | 21 | 12 | 12 | 175 | 4.2 | 84 | 1.7 | 70 |
How do the previous and next months compare?
Baseline: September (62/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| August | -11 | +3.3 °C | +3.6 °C | -0.1 | -45.6 mm | +1.4 h | -0.7 % | -0.1 m/s |
| October | +8 | -5.6 °C | -6.3 °C | -3.7 | -51.8 mm | -0.9 h | -0.3 % | +0.1 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Osaka in September?
The average daily high is around 27 °C, with an average daily low of about 19 °C.
Does it rain a lot in Osaka in September?
The curated estimate is about 16 rainy days per month, not a directly measured long-term average. Total precipitation averages around 226 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Osaka?
By the climate score, April, May, June and October are the strongest months for Osaka. September is not among them.