Measurements:
°C
°F
CURRENT WEATHER
02:14
Nagasaki
60°F
S 6 mph
Feels like: 60°F
Precip: 0%
World Resorts Japan Nagasaki Weather

7 Day Weather Forecast

04.27
mon
DAY
70°F
E 7 mph
precip
0%
NIGHT
62°F
E 2 mph
precip
0%
04.28
tue
DAY
68°F
NE 9 mph
precip
0%
NIGHT
62°F
SE 7 mph
precip
0%
04.29
wed
DAY
60°F
SE 5 mph
precip
0%
NIGHT
58°F
S 6 mph
precip
0%
04.30
thu
DAY
64°F
SW 8 mph
precip
0%
NIGHT
54°F
S 6 mph
precip
0%
05.01
fri
DAY
68°F
SE 11 mph
precip
0%
NIGHT
58°F
SW 2 mph
precip
0%
05.02
sat
DAY
70°F
E 5 mph
precip
0%
NIGHT
62°F
SE 1 mph
precip
0%
05.03
sun
DAY
66°F
NW 2 mph
precip
0%
NIGHT
58°F
W 11 mph
precip
100%

Nagasaki Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Nagasaki was 17.8°F. The maximum and minimum values were 16.7°F and 18.3°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 91.8 °F
July 88.3 °F
September 86.6 °F
Warmest sea temperature:
August 86.4 °F
September 83.7 °F
July 82.2 °F
The most cold months:
January 50.4 °F
February 52.0 °F
December 54.1 °F
The most rainy months:
July 12 days
June 11 days
August 10 days
The most windy months:
January 11 mph
February 11 mph
December 11 mph
more details