World Resorts Japan Nagasaki Weather

Nagasaki Sea Temperature in May

Average sea water temperature in May:
+66.8°F
Minimum sea water temperature in May: 71.4°F
Maximum sea water temperature in May: 62.4°F

Daily sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 66.6°F. The highest and lowest sea temperatures during the month were 70.0°F and 64.4°F.

Monthly sea water temperature in Nagasaki, °F

Which Japan resorts have warmest sea in May?

Place name May 2026 May 2025
Okinawa 74.3°F 76.2°F
Tokyo 68.4°F 66.8°F
Yokohama 67.9°F 66.1°F
Kamakura 66.6°F 65.7°F
Nagasaki 66.6°F 66.0°F
Fukuoka 66.4°F 64.7°F
Hakone 66.1°F 65.5°F
Atami 65.8°F 65.3°F
Nagoya 65.5°F 65.9°F
Nara 64.8°F 64.9°F
Kyoto 64.7°F 64.8°F
Osaka 64.7°F 65.1°F
Kobe 63.4°F 64.1°F
Hiroshima 62.2°F 62.9°F
Sapporo 50.9°F 52.4°F
Noboribetsu 46.3°F 48.5°F

Best time for vacation in Nagasaki

Sunniest months:
October 18 days
May 14 days
August 13 days
Warmest months:
August 87.6 °F
July 84.4 °F
September 82.9 °F
Warmest sea temp:
August 82.8 °F
September 80.3 °F
July 79.0 °F
Coldest months:
January 50.3 °F
February 51.8 °F
December 53.7 °F
Rainiest months:
July 12 days
June 11 days
August 10 days
Windiest months:
January 10.8 mph
February 10.7 mph
December 10.7 mph

Nagasaki on a weather map

Current weather
18:55
Nagasaki
+72°F
SE 7 mph
Feels like: +77°F
Precip.: 0%
Places in Japan:
Name
°F
Atami
+68°F
Yokohama
+72°F
Kamakura
+70°F
Kyoto
+73°F
Kobe
+75°F
Nagasaki
+72°F
Nagoya
+81°F
Nara
+77°F
Okinawa
+72°F
Osaka
+81°F
Sapporo
+54°F
Tokyo
+79°F
Fukuoka
+73°F
Hakone
+68°F
Hiroshima
+68°F
all places
24 Hours Forecast
Nagasaki
Local time: 18:55
May 17, sunday
2100
66°F
S
2 mph
May 18, monday
0000
64°F
SE
1 mph
0300
64°F
S
1 mph
0600
64°F
W
3 mph
0900
72°F
E
1 mph
1200
73°F
NE
4 mph
1500
75°F
NE
4 mph
1800
73°F
SE
5 mph
Units of measurement: °C / °F