Monthly weather forecast and climate
Nagasaki, Japan

What is the coldest month in Nagasaki?

The coldest month is January, with an average high-temperature of 10.4°C (50.7°F) and an average low-temperature of 3.8°C (38.8°F).

How much does it rain in Nagasaki?

Throughout the year, in Nagasaki, Japan, there are 124.7 rainfall days, and 1857.7mm (73.1") of precipitation is accumulated.

When does it snow in Nagasaki?

Months with snowfall in Nagasaki are January, February and December.

How much does it snow in Nagasaki?

Throughout the year, in Nagasaki, there are 2.5 snowfall days, and 40mm (1.6") of snow is accumulated.

What is the snowiest month in Nagasaki?

The month with the most snowfall in Nagasaki, Japan, is January when snow falls for 1.2 days and typically aggregates up to 20mm (0.8") of snow.

When is the sea coldest in Nagasaki?

February and March, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater. Swimming in 15.3°C (59.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the rainiest month in Nagasaki?

The month with the most rainfall is June when the rain falls for 13.5 days and typically aggregates up to 314.6mm (12.4") of precipitation.

What is the warmest month in Nagasaki?

The warmest month is August, with an average high-temperature of 31.7°C (89.1°F) and an average low-temperature of 25.1°C (77.2°F).

What is the month with the warmest sea water in Nagasaki?

With an average sea temperature of 27.7°C (81.9°F), August is the month with the warmest seawater in Nagasaki. For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the driest month in Nagasaki?

The month with the least rainfall is December when the rain falls for 10 days and typically collects 60.8mm (2.4") of precipitation.
Average temperature - Nagasaki, Japan
Average rainfall - Nagasaki, Japan

The wettest month (with the highest rainfall) is June (314.6mm).
The driest month (with the lowest rainfall) is December (60.8mm).

Average rainfall days - Nagasaki, Japan

The month with the highest number of rainy days is June (13.5 days).
The month with the lowest number of rainy days is October (6.2 days).

Average snowfall - Nagasaki, Japan

The month with the highest snowfall is January (20mm).
Months with the lowest snowfall are March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days - Nagasaki, Japan

The month with the highest number of snowfall days is January (1.2 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average sea temperature - Nagasaki, Japan

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
Coldest months (with the lowest average sea temperature) are February and March (15.3°C).

Average daylight / Average sunshine - Nagasaki, Japan
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