Hottest (avg)
#3 / 12
Osaka in September
September weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 12h
What to expect
September marks a typically very warm period of autumn, where temperatures are dropping quickly. Thermometers typically reach 28°C / 82°F, with evenings cooling to 21°C / 69°F.
The atmosphere is generally hot and tropical, with heavy bursts of rain breaking the heat.
September in context
How it compares to the rest of the year in Osaka.
Wettest (avg)
#3 / 12
Daylight Hours
#6 / 12
Windiest (avg)
#7 / 12
Highest UV
#6 / 12
Most Humid
#4 / 12
Temperature
- Daytime high
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- Nighttime low
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- Feels like (avg)
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Sunshine
- Daylight
- 12.4 hours
- UV index (max)
- 7
- Typical sun hours
- 05:40 – 18:04
Rain & Snow
- Total
-
- Rainy days
- 15
- Cloud cover
- 61%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 76%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is September a good time to visit Osaka?
Typical September days in Osaka reach highs of 28°C (82°F) with nights around 21°C (70°F). It usually feels hot by day and mild after dark. It is among the wetter months, so it is wise to have some indoor backup plans or flexible activities.
What are temperatures like in September?
Daytime temperatures in September typically peak near 28°C (82°F), while nights drop to around 21°C (70°F). Expect hot afternoons and mild evenings.
How much does it rain in September?
Rainfall in September averages 168 mm (6.6 in) across roughly 15 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 05:40 and sunset near 18:04. Daylight is fairly typical, with enough time for sightseeing.
Does the weather change during September?
September usually begins milder and cools down as the month goes on, so late-September can feel more like the next month.
How strong is the sun in September?
UV levels are often high (around 7). Regular sunscreen and a hat are recommended.
Is it windy in September?
In September, average wind speeds are around 9 km/h (6 mph), with gusts on the windiest days reaching about 49 km/h (30 mph). On the ground, it is it often feels breezy, especially in more exposed spots or along the coast.