Monthly weather forecast and climate
Nagasaki, Japan

Weather in January

January, the same as December, is a cool winter month in Nagasaki, Japan, with average temperature fluctuating between 10.4°C (50.7°F) and 3.8°C (38.8°F). January is the coldest month, with an average high-temperature of 10.4°C (50.7°F) and an average low-temperature of 3.8°C (38.8°F). Weather in January »

Weather in February

The last month of the winter, February, is another cool month in Nagasaki, Japan, with average temperature fluctuating between 4.4°C (39.9°F) and 11.7°C (53.1°F). In February, the average high-temperature is relatively the same as in January - a still fresh 11.7°C (53.1°F). Weather in February »

Weather in March

March, the first month of the spring, in Nagasaki, is a moderate month, with average temperature fluctuating between 7.3°C (45.1°F) and 14.8°C (58.6°F). In March, the average high-temperature marginally rises, from a fresh 11.7°C (53.1°F) in February, to a mild 14.8°C (58.6°F). Weather in March »

Weather in April

April is an enjoyable spring month in Nagasaki, Japan, with average temperature ranging between max 19.7°C (67.5°F) and min 11.6°C (52.9°F). In Nagasaki, the average high-temperature slightly increases, from a mild 14.8°C (58.6°F) in March, to an enjoyable 19.7°C (67.5°F). Weather in April »

Weather in May

May, the last month of the spring, in Nagasaki, is a moderately hot month, with average temperature fluctuating between 15.8°C (60.4°F) and 23.5°C (74.3°F). In May, the average high-temperature slightly increases, from an enjoyable 19.7°C (67.5°F) in April, to a warm 23.5°C (74.3°F). Weather in May »

Weather in June

June, the first month of the summer, in Nagasaki, is still a warm month, with temperature in the range of an average low of 20°C (68°F) and an average high of 26.4°C (79.5°F). In Nagasaki, Japan, the average high-temperature is relatively the same as in May - a still moderately hot 26.4°C (79.5°F). Weather in June »

Weather in July

July in Nagasaki, Japan, is a tropical summer month, with average temperature varying between 24.3°C (75.7°F) and 30.1°C (86.2°F). In July, the average high-temperature slightly increases, from a warm 26.4°C (79.5°F) in June, to a tropical 30.1°C (86.2°F). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Nagasaki, Japan, with average temperature fluctuating between 25.1°C (77.2°F) and 31.7°C (89.1°F). With an average high-temperature of 31.7°C (89.1°F) and an average low-temperature of 25.1°C (77.2°F), August is the warmest month. The average heat index in August is calculated to a scorching 41.3°C (106.3°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Nagasaki, Japan, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 28.6°C (83.5°F). In September, the average high-temperature marginally drops, from a hot 31.7°C (89.1°F) in August, to a warm 28.6°C (83.5°F). Weather in September »

Weather in October

October, like September, in Nagasaki, Japan, is a moderately hot autumn month, with average temperature fluctuating between 16.1°C (61°F) and 23.8°C (74.8°F). In Nagasaki, the average high-temperature slightly decreases, from a moderately hot 28.6°C (83.5°F) in September, to a still warm 23.8°C (74.8°F). Weather in October »

Weather in November

November, the last month of the autumn, in Nagasaki, is also an enjoyable month, with temperature in the range of an average low of 10.8°C (51.4°F) and an average high of 18.3°C (64.9°F). In Nagasaki, the average high-temperature drops, from a moderately hot 23.8°C (74.8°F) in October, to a comfortable 18.3°C (64.9°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderate month in Nagasaki, Japan, with average temperature ranging between min 5.9°C (42.6°F) and max 13.1°C (55.6°F). In December, the average high-temperature decreases, from an enjoyable 18.3°C (64.9°F) in November, to a moderate 13.1°C (55.6°F). Weather in December »
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FAQ

What is the coldest month in Nagasaki?

January is the coldest month in Nagasaki, 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?

In Nagasaki, during the entire year, the rain falls for 124.7 days and collects up to 1857.7mm (73.14") of precipitation.

When does it snow in Nagasaki?

Months with snowfall are January, February and December.

How many days does it snow in Nagasaki?

Throughout the year, in Nagasaki, Japan, there are 2.5 snowfall days, and 40mm (1.57") of snow is accumulated.

What is the snowiest month in Nagasaki?

January is the month with the most snowfall. Snow falls for 1.2 days and accumulates 20mm (0.79") of snow.

What is the month with the least sunshine in Nagasaki?

With an average of 3.3h of sunshine, January has the least sunshine of the year.

When is the lowest UV index in Nagasaki?

Months with the lowest UV index are January and December, with an average maximum UV index of 3.

What is the least humid month in Nagasaki?

The least humid month in Nagasaki, Japan, is February, with an average relative humidity of 64%.

What are the months with the coldest sea water in Nagasaki?

February and March, with an average sea temperature of 15.3°C (59.5°F), are months with the coldest seawater.

When it does not snow in Nagasaki?

In Nagasaki snow does not fall in March through November.

What is the wettest month in Nagasaki?

June is the month with the most rainfall in Nagasaki. Rain falls for 13.5 days and accumulates 314.6mm (12.39") of precipitation.

When are the longest days in Nagasaki?

The month with the longest days is June, with an average of 14.3h of daylight.

What is the most humid month in Nagasaki?

The most humid month is July, with an average relative humidity of 80%.

What is the month with the highest UV index in Nagasaki?

Months with the highest UV index in Nagasaki are July and August, with an average maximum UV index of 11.

What is the warmest month in Nagasaki?

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

What month is the sea warmest in Nagasaki?

The month with the warmest seawater in Nagasaki is August, with an average sea temperature of 27.7°C (81.9°F).

What month has the most sunshine in Nagasaki?

The month with the most sunshine in Nagasaki, Japan, is August, with an average of 6.8h of sunshine.

What is the driest month in Nagasaki?

December is the month with the least rainfall in Nagasaki, Japan. Rain falls for 10 days and accumulates 60.8mm (2.39") of precipitation.

What is the month with the shortest days in Nagasaki?

With an average of 10h of daylight, December has the shortest days of the year.

Average temperature
Nagasaki, Japan

Average temperature - Nagasaki, Japan

The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (10.4°C).

The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).

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Average rainfall
Nagasaki, Japan

Average rainfall - Nagasaki, Japan

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

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Average rainfall days
Nagasaki, Japan

Average rainfall days - Nagasaki, Japan

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

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Average snowfall
Nagasaki, Japan

Average snowfall - Nagasaki, Japan

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

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Average snowfall days
Nagasaki, Japan

Average snowfall days - Nagasaki, Japan

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

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Average sea temperature
Nagasaki, Japan

Average sea temperature - Nagasaki, Japan

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

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Average daylight / Average sunshine
Nagasaki, Japan

Average daylight / Average sunshine - Nagasaki, Japan

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

The month with the most sunshine is August (Average sunshine: 6.8h).
The month with the least sunshine is January (Average sunshine: 3.3h).

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