Measurements:
°C
°F
CURRENT WEATHER
07:01
Nagasaki
76°F
S 9 mph
Feels like: 80°F
Precip: 26%
World Resorts Japan Nagasaki Weather

7 Day Weather Forecast

09.29
tue
DAY
78°F
SW 6 mph
precip
12%
NIGHT
74°F
SW 6 mph
precip
10%
09.30
wed
DAY
78°F
E 5 mph
precip
5%
NIGHT
74°F
S 7 mph
precip
13%
10.01
thu
DAY
80°F
SE 12 mph
precip
7%
NIGHT
68°F
S 12 mph
precip
6%
10.02
fri
DAY
76°F
S 12 mph
precip
1%
NIGHT
66°F
SW 9 mph
precip
6%
10.03
sat
DAY
74°F
E 2 mph
precip
2%
NIGHT
70°F
SW 9 mph
precip
7%
10.04
sun
DAY
80°F
S 6 mph
precip
2%
NIGHT
68°F
S 11 mph
precip
8%
10.05
mon
DAY
76°F
SW 21 mph
precip
3%
NIGHT
68°F
SW 16 mph
precip
4%

Nagasaki Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Nagasaki was 27.8°F. The maximum and minimum values were 26.6°F and 30.1°F respectively.

Nagasaki on the Weather Map

Best Time to Visit Nagasaki
The most sunny months:
October 18 days
May 14 days
August 13 days
The most warm months:
August 91.6 °F
July 88.2 °F
September 86.4 °F
Warmest sea temperature:
August 86.5 °F
September 83.8 °F
July 82.3 °F
The most cold months:
January 50.4 °F
February 52.0 °F
December 54.1 °F
The most rainy months:
July 11 days
June 11 days
August 9 days
The most windy months:
January 11 mph
February 11 mph
December 11 mph
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