World Resorts Japan Nagasaki Weather

Nagasaki 7 Days Forecast

15.09
tue
Day
81°F
E 7 mph
Precip.
19%
Night
75°F
S 9 mph
Precip.
11%
16.09
wed
Day
81°F
SE 2 mph
Precip.
4%
Night
75°F
SW 7 mph
Precip.
23%
17.09
thu
Day
82°F
E 2 mph
Precip.
12%
Night
77°F
W 6 mph
Precip.
31%
18.09
fri
Day
82°F
E 5 mph
Precip.
10%
Night
75°F
SW 7 mph
Precip.
43%
19.09
sat
Day
81°F
SE 6 mph
Precip.
19%
Night
73°F
S 11 mph
Precip.
9%
20.09
sun
Day
82°F
SW 12 mph
Precip.
3%
Night
77°F
S 15 mph
Precip.
22%
21.09
mon
Day
84°F
SW 18 mph
Precip.
4%
Night
79°F
S 16 mph
Precip.
9%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 83.2°F. The highest and lowest sea temperatures during the month were 86.2°F and 81.1°F.

Air temperature in Nagasaki, °F

Precipitation total in Nagasaki, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Nagasaki

Sunniest months:
October 18 days
May 14 days
August 13 days
Warmest months:
August 87.5 °F
July 84.4 °F
September 82.9 °F
Warmest sea temp:
August 82.9 °F
September 80.3 °F
July 79.1 °F
Coldest months:
January 50.3 °F
February 51.8 °F
December 53.7 °F
Rainiest months:
July 11 days
June 11 days
August 9 days
Windiest months:
January 10.8 mph
February 10.7 mph
December 10.7 mph

Nagasaki on a weather map

Current weather
20:03
Nagasaki
+75°F
S 7 mph
Feels like: +79°F
Precip.: 21%
Places in Japan:
Name
°F
Atami
+72°F
Yokohama
+73°F
Kamakura
+75°F
Kyoto
+72°F
Kobe
+73°F
Nagasaki
+75°F
Nagoya
+73°F
Nara
+73°F
Okinawa
+79°F
Osaka
+75°F
Sapporo
+54°F
Tokyo
+72°F
Fukuoka
+72°F
Hakone
+73°F
Hiroshima
+68°F
all places
24 Hours Forecast
Nagasaki
Local time: 20:03
September 15, tuesday
2100
75°F
S
7 mph
September 16, wednesday
0000
75°F
S
9 mph
0300
73°F
SW
7 mph
0600
75°F
SW
6 mph
0900
75°F
SW
6 mph
1200
81°F
SE
2 mph
1500
81°F
E
7 mph
1800
81°F
SW
2 mph
Units of measurement: °C / °F