World Resorts Japan Hiroshima Weather

Hiroshima sea water temperature

Current sea water temperature:
+75.0°F
Minimum sea water temperature in October: 80.4°F
Maximum sea water temperature in October: 68.7°F
Average sea water temperature in October: 73.9°F

Sea water temperature for the last 10 days:

October 25 75.0°F October 20 75.0°F
October 24 74.7°F October 19 74.8°F
October 23 74.5°F October 18 75.2°F
October 22 75.7°F October 17 75.9°F
October 21 76.1°F October 16 76.1°F

When is the warmest sea in Hiroshima?

Based on the data about daily sea water temperature for the last three years the warmest sea in Hiroshima was noticed in August, September and July.

Monthly Sea Temperatures in Hiroshima, °F

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 82.7°F. The highest and lowest sea temperatures during the month were 85.1°F and 78.6°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 79.3°F. The highest and lowest sea temperatures during the month were 83.1°F and 77.2°F.

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 79.5°F. The highest and lowest sea temperatures during the month were 85.3°F and 71.4°F.

Best time for vacation in Hiroshima

Sunniest months:
May 16 days
October 15 days
April 14 days
Warmest months:
August 88.3 °F
July 85.7 °F
September 81.7 °F
Warmest sea temp:
August 81.3 °F
September 78.4 °F
July 77.7 °F
Coldest months:
January 46.3 °F
February 47.8 °F
December 49.7 °F
Rainiest months:
July 9 days
June 9 days
August 8 days
Windiest months:
December 5.9 mph
January 5.9 mph
February 5.6 mph

Hiroshima on a weather map

Hiroshima
+64°F
SW 7 mph
Feels like: +64°F
Precip.: 80%
Places in Japan:
Name
°F
+66°F
+68°F
+68°F
+64°F
+68°F
+75°F
+68°F
+66°F
+77°F
+68°F
+45°F
+66°F
+68°F
+68°F
+64°F
24 Hours Forecast
Hiroshima
Local time: 01:52
October 26, monday
0300
64°F
SW
7 mph
0600
64°F
SW
8 mph
0900
64°F
SW
7 mph
1200
64°F
S
7 mph
1500
66°F
S
6 mph
1800
68°F
S
6 mph
2100
66°F
S
8 mph
October 27, tuesday
0000
64°F
S
8 mph
Units of measurement: °C / °F