Osaka weather in September
Osaka in September averages 26°C (78°F), 146 mm of rain and 5.5 hours of sun a day.
Of the twelve months in Osaka, September is the third warmest, the third wettest and the fifth sunniest.
- Average temp
- 26°C (78°F)
22–30°C · 71–85°F
- Rainfall
- 146 mm
Showers likely
- Sunshine
- 5.5 h
hours per day
What is Osaka like in September?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Some rain is likely; pack for showers.
Evening
Evenings stay warm.
What should I pack for Osaka in September?
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A light rain jacket
About 146 mm falls this month — showers rather than washouts.
September compared with August and October
September in Osaka is 3.9°C cooler than August and 32 mm wetter than it, which averages 30°C (85°F).
September in Osaka is 5.8°C warmer than October and about as wet as it, which averages 20°C (68°F).
Daylight in Osaka in September
On 15 September the sun is up for 12 hours 24 minutes in Osaka, rising about 05:40 and setting about 18:04 local time.
September ends 1 hour 1 minute shorter than it begins, so the last week of the month is a different length of day from the first.
That is 2 hours 4 minutes short of June, the longest-lit month here.
Where to stay in Osaka
Dates are a starting point for September.
Travel guides for Osaka
What to read before you book.
Osaka weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 6°C / 44°F | 47 mm |
| February | 7°C / 44°F | 61 mm |
| March | 10°C / 50°F | 103 mm |
| April | 15°C / 60°F | 103 mm |
| May | 20°C / 69°F | 136 mm |
| June | 24°C / 76°F | 185 mm |
| July | 28°C / 82°F | 175 mm |
| August | 30°C / 85°F | 113 mm |
| September | 26°C / 78°F | 146 mm |
| October | 20°C / 68°F | 140 mm |
| November | 14°C / 57°F | 73 mm |
| December | 9°C / 48°F | 56 mm |
Similar weather in September
Other destinations whose September averages sit close to this one.
Check another month
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FAQs about Osaka in September
September climate averages for Osaka, 1991–2020.
Osaka averages 26°C (78°F) in September, ranging from about 22°C (71°F) at night to 30°C (85°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 146 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 26°C (78°F) against 20°C (68°F) in October — 5.8°C warmer.
September is 3.9°C cooler than August, and 32 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 5.5 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 24 minutes of daylight in mid-September, against 14 hours 28 minutes in June and 9 hours 51 minutes in December.
On 15 September, sunrise is about 05:40 and sunset about 18:04 local time. Both shift across the month — the month ends 1 hour 1 minute shorter than it starts.
