Weather in Osaka-shi for September 2025
In general, the average temperature in Osaka-shi at the beginning of September is 32.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 29 °C by the end of September.
Expect significant rainfall in Osaka-shi during September, with an average of 16 rainy days.
Is September a good time to visit Osaka-shi? check out the best time to travel to Osaka-shi page.
- New! Chat with our AI weatherman - it’s amazing and free.
Osaka-shi in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  32° | 2  32° | 3  33° | 4 33° | 5 33° | 6 31° | 7 31° |
| 8 30° | 9 33° | 10 32° | 11  31° | 12 31° | 13 31° | 14 33° |
| 15  29° | 16 32° | 17 32° | 18 32° | 19 32° | 20 31° | 21 31° |
| 22 27° | 23 28° | 24 28° | 25  29° | 26 30° | 27 31° | 28 29° |
| 29 28° | 30 28° |
You can click on date
Temperatures trend during September in Osaka-shi
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 32° /23° | 2.6 mm | 7 | |
| 2 Sept. | Overcast | 32° /24° | 2.2 mm | 7 | |
| 3 Sept. | Partly cloudy | 33° /24° | 0.7 mm | 8 | |
| 4 Sept. | Patchy rain possible | 33° /24° | 0.4 mm | 7 | |
| 5 Sept. | Patchy rain possible | 33° /24° | 3.2 mm | 8 | |
| 6 Sept. | Light rain shower | 31° /24° | 1.8 mm | 7 | |
| 7 Sept. | Overcast | 31° /23° | 0 mm | 8 | |
| 8 Sept. | Light rain shower | 30° /24° | 0.4 mm | 7 | |
| 9 Sept. | Patchy rain possible | 33° /24° | 1.3 mm | 8 | |
| 10 Sept. | Light rain shower | 32° /24° | 3.9 mm | 7 | |
| 11 Sept. | Moderate or heavy rain shower | 31° /24° | 6.1 mm | 7 | |
| 12 Sept. | Partly cloudy | 31° /24° | 4.1 mm | 7 | |
| 13 Sept. | Partly cloudy | 31° /24° | 0.7 mm | 8 | |
| 14 Sept. | Partly cloudy | 33° /24° | 0.3 mm | 8 | |
| 15 Sept. | Cloudy | 29° /25° | 1.6 mm | 7 | |
| 16 Sept. | Partly cloudy | 32° /25° | 2.9 mm | 8 | |
| 17 Sept. | Patchy rain possible | 32° /25° | 0.3 mm | 7 | |
| 18 Sept. | Patchy rain possible | 32° /25° | 1.1 mm | 7 | |
| 19 Sept. | Patchy rain possible | 32° /25° | 0.8 mm | 8 | |
| 20 Sept. | Patchy rain possible | 31° /24° | 1.2 mm | 8 | |
| 21 Sept. | Patchy rain possible | 31° /25° | 6.3 mm | 7 | |
| 22 Sept. | Light rain shower | 27° /22° | 17.7 mm | 6 | |
| 23 Sept. | Patchy rain possible | 28° /20° | 0.2 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /20° | 0.4 mm | 6 | |
| 25 Sept. | Sunny | 29° /19° | 0 mm | 7 | |
| 26 Sept. | Partly cloudy | 30° /21° | 0 mm | 7 | |
| 27 Sept. | Partly cloudy | 31° /23° | 0.7 mm | 8 | |
| 28 Sept. | Light rain shower | 29° /23° | 3.3 mm | 6 | |
| 29 Sept. | Partly cloudy | 28° /22° | 0.9 mm | 7 | |
| 30 Sept. | Light rain shower | 28° /21° | 0.2 mm | 6 | |
| Next | |||||
Guide for Osaka-shi in September
In September, Osaka, Japan experiences a transition from the hot and humid summer to a more temperate autumn. At the beginning of the month, the weather remains quite warm and humid, with average daytime temperatures around 28° to 30°.
Nights are slightly cooler but still relatively warm, averaging around 22° to 24°. The humidity can be quite high, often exceeding 70%, which can make the heat feel more intense.
Rain is also common in early September, as the tail end of the typhoon season can bring heavy showers and occasional storms.
As the month progresses, the weather starts to cool down gradually. By the end of September, daytime temperatures typically range from 24° to 26°, while nighttime temperatures drop to a more comfortable range of 18° to 20°.
The humidity levels also begin to decrease, making the air feel fresher and more pleasant. Rainfall becomes less frequent, although occasional showers can still occur.
Overall, September in Osaka is a month of change, moving from the intense heat of summer to the more moderate and enjoyable conditions of autumn.
Visitors should be prepared for a mix of warm and cooler days, and it’s advisable to carry an umbrella due to the unpredictable nature of the weather during this transitional period.
Osaka-shi in September - FAQ
What to pack to Osaka-shi in September?
As you prepare for your trip to Osaka-shi in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Osaka-shi, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
Quick links
Where is Osaka-shi?Get accurate weather forecasts for Osaka-shi, located at latitude 34.694 and longitude 135.502. Stay updated with localized weather information tailored for Osaka-shi.