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Weather in Hiroshima for September 2025

Your guide to Hiroshima weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Hiroshima has been nearly identical to the historical average, with a temperature of 28.7 °C (showing only a slight deviation of -0.2 °C).

  • Expect cooler weather in the next days in Hiroshima with the forecast suggesting a temperature of 25.9 °C, lower than the historical average.

  • In general, the average temperature in Hiroshima at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.4 °C by the end of September.

    • Rain 🌧️

  • Hiroshima experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 146.4 mm.

    • More

  • Is September a good time to visit Hiroshima? check out the best time to travel to Hiroshima page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/20°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
81 %
Avg humidity

Hiroshima Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
28°
2
Moderate or heavy rain shower
28°
3
Patchy rain possible
29°
4
Patchy rain possible
28°
5
Patchy rain possible
29°
6
Patchy rain possible
29°
7
Cloudy
29°
8
Patchy rain possible
29°
9
Cloudy
30°
10
Moderate rain at times
29°
11
Patchy rain possible
29°
12
Patchy rain possible
29°
13
Overcast
29°
14
Moderate rain
30°
15
Moderate rain
29°
16
Patchy rain possible
30°
17
Patchy rain possible
29°
18
Moderate rain
26°
19
Patchy rain possible
24°
20
Moderate rain
21°
21
Patchy rain possible
25°
22
Overcast
24°
23
Patchy rain possible
25°
24
Patchy rain possible
27°
25
Moderate rain
22°
26
Moderate rain
24°
27
Patchy rain possible
26°
28
Patchy rain possible
26°
29
Cloudy
26°
30
Cloudy
27°

Temperatures trend during September in Hiroshima

See the weather trend as well as the moving average line

September weather in Hiroshima day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 28° /22° 4.8 mm 6
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /21° 8.1 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 15 mm 7
4 Sept. Patchy rain possible
Patchy rain possible
 28° /21° 8.9 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 4.9 mm 6
6 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 5.1 mm 6
7 Sept. Cloudy
Cloudy
 29° /20° 0.1 mm 6
8 Sept. Patchy rain possible
Patchy rain possible
 29° /20° 2.1 mm 7
9 Sept. Cloudy
Cloudy
 30° /21° 1.9 mm 6
10 Sept. Moderate rain at times
Moderate rain at times
 29° /21° 14.6 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 6 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 1.9 mm 7
13 Sept. Overcast
Overcast
 29° /21° 3.1 mm 7
14 Sept. Moderate rain
Moderate rain
 30° /23° 9.6 mm 1.9
15 Sept. Moderate rain
Moderate rain
 29° /23° 5.3 mm 1.9
16 Sept. Patchy rain possible
Patchy rain possible
 30° /23° 3.1 mm 1.9
17 Sept. Patchy rain possible
Patchy rain possible
 29° /23° 4.1 mm 1.9
18 Sept. Moderate rain
Moderate rain
 26° /21° 9.2 mm 1.6
19 Sept. Patchy rain possible
Patchy rain possible
 24° /21° 0.7 mm 5
20 Sept. Moderate rain
Moderate rain
 21° /21° 6.3 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 25° /17° 1.9 mm 5
22 Sept. Overcast
Overcast
 24° /15° 0 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 25° /19° 0.5 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 27° /22° 2.8 mm 5
25 Sept. Moderate rain
Moderate rain
 22° /21° 13.4 mm 5
26 Sept. Moderate rain
Moderate rain
 24° /21° 8 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 26° /20° 2 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 26° /19° 0.8 mm 6
29 Sept. Cloudy
Cloudy
 26° /18° 0.2 mm 6
30 Sept. Cloudy
Cloudy
 27° /18° 0.7 mm 6
Next
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.
Change Month
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Hiroshima weather in September vs August vs October

Compare September weather in Hiroshima with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures30°/23°27°/20°22°/13°
Rainfall320 mm146 mm45 mm
Wind12.3 km/h12.3 km/h13.4 km/h
Humidity81%81%73%
Rainy days29 days22 days16 days
Dry days2 days8 days15 days

Planning a trip to Hiroshima? Discover the best time to visit

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 27° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hiroshima during September?
Significant rainfall exceeding 146.4 mm is expected in Hiroshima during September, occurring over more than 22 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 12 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

September rainfall patterns in Hiroshima

Explore the daily rainfall trends and prepare for Hiroshimas September weather 💧

UV exposure in Hiroshima during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Hiroshima
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Get accurate weather forecasts for Hiroshima, located at latitude 34.4 and longitude 132.45. Stay updated with localized weather information tailored for Hiroshima.

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