Measurements:
°C
°F
CURRENT WEATHER
01:29
Nagasaki
84°F
W 4 mph
Feels like: 92°F
Precip: 9%
World Resorts Japan Nagasaki Weather

7 Day Weather Forecast

08.20
thu
DAY
88°F
E 7 mph
precip
6%
NIGHT
86°F
NE 4 mph
precip
11%
08.21
fri
DAY
88°F
NE 7 mph
precip
17%
NIGHT
84°F
S 2 mph
precip
11%
08.22
sat
DAY
88°F
NE 7 mph
precip
7%
NIGHT
84°F
E 5 mph
precip
27%
08.23
sun
DAY
86°F
NE 7 mph
precip
17%
NIGHT
82°F
S 4 mph
precip
22%
08.24
mon
DAY
86°F
E 9 mph
precip
7%
NIGHT
82°F
S 5 mph
precip
9%
08.25
tue
DAY
88°F
E 9 mph
precip
6%
NIGHT
82°F
S 9 mph
precip
10%
08.26
wed
DAY
92°F
SE 9 mph
precip
4%
NIGHT
80°F
S 9 mph
precip
11%

Nagasaki Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Nagasaki was 29.1°F. The maximum and minimum values were 28.4°F and 29.9°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 88.2 °F
September 86.6 °F
Warmest sea temperature:
August 86.4 °F
September 83.7 °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 10 days
The most windy months:
January 11 mph
February 11 mph
December 11 mph
more details