Hiroshima Weather: August
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Average Day Temperature: | 92.6°F |
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Average Night Temperature: | 75.9°F |
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Sea Water Temperature: | 84.6°F |
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Number of Sunny Days: | 12 days |
| Sunshine Hours: | 12.1 - 13.9 hours | |
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Number of Rainy Days: | 8 days |
| Precipitation Totals: | 8.0 in | |
| detailed information | ||
forecast
| Hiroshima |
Temperature
| Hiroshima |
Air Temperature in August, °F
The highest day temperature in August 2025 was 98°F. The lowest night temperature was 75°F. The average values for day and night temperatures during August were 90.0°F и 77.3°F respectivly.
Hiroshima Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Hiroshima was 86.9°F. The maximum and minimum values were 83.6°F and 88.8°F respectively.
You can expect various weather conditions during August. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in August, in
Precipitation total in August for Hiroshima is 8.0 in. It makes august one of the most rainy months of the year.
The average wind speed in August is 4.4 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Hiroshima in August is 8.1 hours.
| Atami | ![]() |
+50 |
| Fukuoka | ![]() |
+46 |
| Hakone | ![]() |
+52 |
| Hiroshima | ![]() |
+46 |
| Kamakura | ![]() |
+54 |
| Kobe | ![]() |
+48 |
| Kyoto | ![]() |
+46 |
| Nagasaki | ![]() |
+50 |
| Nagoya | ![]() |
+48 |
| Nara | ![]() |
+48 |
| Okinawa | ![]() |
+70 |
| Osaka | ![]() |
+50 |
| Sapporo | ![]() |
+28 |
| Tokyo | ![]() |
+54 |
| Yokohama | ![]() |
+54 |
| 1800 | ![]() |
38°F | S 5 mph |
| 2100 | ![]() |
36°F | S 2 mph |
| 0000 | ![]() |
34°F | S 3 mph |
| 0300 | ![]() |
34°F | SE 2 mph |
| 0600 | ![]() |
32°F | S 3 mph |
| 0900 | ![]() |
42°F | SE 0 mph |
| 1200 | ![]() |
48°F | NE 6 mph |
| 1500 | ![]() |
50°F | NE 6 mph |

































