Measurements:
°C
°F
Fukuoka
70°F
S 4 mph
Feels like: 70°F
Precip: 35%
World Resorts Japan Fukuoka Weather

Fukuoka Sea Water Temperature

Current Sea Water Temperature:
+80.6°F
Maximum Sea Water Temperature in September: 90.0°F
Minimum Sea Water Temperature in September: 76.4°F
Average water temperature in September: 82.1°F

Sea Water Temperature for the Last 10 Days:

September 28 80.6°F September 23 81.2°F
September 27 79.8°F September 22 81.0°F
September 26 80.6°F September 21 81.4°F
September 25 80.8°F September 20 81.6°F
September 24 80.8°F September 19 81.6°F

When is the Warmest Sea for Fukuoka?

According to our data for the last three years for Fukuoka the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Fukuoka was 88.8°F. The maximum and minimum values were 85.6°F and 91.6°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Fukuoka was 83.8°F. The maximum and minimum values were 79.8°F and 88.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Fukuoka was 85.3°F. The maximum and minimum values were 77.6°F and 92.2°F respectively.

Best Time to Visit Fukuoka
The most sunny months:
May 15 days
October 14 days
August 13 days
The most warm months:
August 93.5 °F
July 90.8 °F
September 85.7 °F
Warmest sea temperature:
August 86.1 °F
September 82.1 °F
July 81.8 °F
The most cold months:
January 47.9 °F
February 49.9 °F
December 51.7 °F
The most rainy months:
June 10 days
July 10 days
August 8 days
The most windy months:
January 9 mph
February 9 mph
December 8 mph

Fukuoka on the Weather Map

Japan Resorts:
NAME
F°
Atami +70
Fukuoka +70
Hakone +74
Hiroshima +66
Kamakura +74
Kobe +70
Kyoto +68
Nagasaki +76
Nagoya +68
Nara +68
Okinawa +82
Osaka +70
Sapporo +52
Tokyo +70
Yokohama +74
24 Hours Weather Forecast
Fukuoka
Local time: 06:59
29 sep, tuesday
0900 68°F
W
2 mph
1200 72°F
SW
3 mph
1500 78°F
SW
4 mph
1800 72°F
SW
3 mph
2100 70°F
SW
3 mph
30 sep, wednesday
0000 68°F
SW
2 mph
0300 66°F
SW
2 mph
0600 66°F
SW
2 mph