Hiroshima
September
Weather in Hiroshima for September 2025
Your guide to Hiroshima weather in September - trends and predictions
In general, the average temperature in Hiroshima at the beginning of September is 30 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 27 °C by the end of September.
Expect significant rainfall in Hiroshima during September, with an average of 16 rainy days.
Is September a good time to visit Hiroshima? check out the best time to travel to Hiroshima page.
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14
Dry days
16
Rainy days
0
Snow days
28°/20°
Temperatures
10 km/h
Avg max wind
81 %
Avg humidity
Hiroshima in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2 29° | 3  30° | 4 31° | 5  30° | 6 29° | 7  30° |
| 8  30° | 9 30° | 10 30° | 11 29° | 12 30° | 13 29° | 14  29° |
| 15  29° | 16 30° | 17 29° | 18 29° | 19 29° | 20 29° | 21 27° |
| 22 25° | 23 26° | 24 26° | 25 26° | 26 27° | 27 28° | 28 28° |
| 29 28° | 30 26° |
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Temperatures trend during September in Hiroshima
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 31° /22° | 1.2 mm | 7 | |
| 2 Sept. | Patchy rain possible | 29° /21° | 0.6 mm | 6 | |
| 3 Sept. | Sunny | 30° /20° | 1.7 mm | 7 | |
| 4 Sept. | Sunny | 31° /21° | 0.2 mm | 7 | |
| 5 Sept. | Moderate or heavy rain shower | 30° /21° | 8.1 mm | 7 | |
| 6 Sept. | Moderate or heavy rain shower | 29° /20° | 9.5 mm | 6 | |
| 7 Sept. | Cloudy | 30° /20° | 0.2 mm | 7 | |
| 8 Sept. | Partly cloudy | 30° /20° | 0.4 mm | 7 | |
| 9 Sept. | Patchy rain possible | 30° /21° | 2.3 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 30° /21° | 6.2 mm | 7 | |
| 11 Sept. | Light rain shower | 29° /21° | 4.1 mm | 7 | |
| 12 Sept. | Partly cloudy | 30° /21° | 3.1 mm | 7 | |
| 13 Sept. | Partly cloudy | 29° /21° | 0.8 mm | 7 | |
| 14 Sept. | Overcast | 29° /22° | 0.1 mm | 7 | |
| 15 Sept. | Mist | 29° /22° | 2.6 mm | 6 | |
| 16 Sept. | Patchy rain possible | 30° /23° | 3 mm | 7 | |
| 17 Sept. | Mist | 29° /22° | 3.2 mm | 6 | |
| 18 Sept. | Patchy rain possible | 29° /21° | 0.2 mm | 7 | |
| 19 Sept. | Patchy rain possible | 29° /22° | 1.3 mm | 7 | |
| 20 Sept. | Patchy rain possible | 29° /21° | 0.4 mm | 7 | |
| 21 Sept. | Light rain shower | 27° /22° | 17.8 mm | 6 | |
| 22 Sept. | Light rain shower | 25° /19° | 7 mm | 6 | |
| 23 Sept. | Patchy rain possible | 26° /16° | 0.3 mm | 6 | |
| 24 Sept. | Sunny | 26° /16° | 0.1 mm | 7 | |
| 25 Sept. | Patchy rain possible | 26° /18° | 0.4 mm | 6 | |
| 26 Sept. | Light rain shower | 27° /19° | 0.5 mm | 6 | |
| 27 Sept. | Light rain shower | 28° /20° | 1.3 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /19° | 0.6 mm | 6 | |
| 29 Sept. | Sunny | 28° /17° | 0.2 mm | 7 | |
| 30 Sept. | Patchy rain possible | 26° /18° | 1.5 mm | 6 | |
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Important Notice
Our weather forecast for Hiroshima in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Hiroshima forecast closer to your planned date for the most up-to-date weather information.
Hiroshima in September - FAQ
What are the expected maximum and minimum temperatures in Hiroshima during September?
During September, expect a variety of temperatures with highs around 28° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hiroshima during September?
Significant rainfall exceeding 103.9 mm is expected in Hiroshima during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hiroshima during September?
The average wind speed in Hiroshima during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Hiroshima in September?
As you prepare for your trip to Hiroshima 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 Hiroshima, 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
- 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
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