Monthly weather forecast and climate
Nagano, Japan

Weather in January

January, like December, in Nagano, Japan, is a wintry winter month, with average temperature varying between -4.1°C (24.6°F) and 3.5°C (38.3°F). The coldest month is January, with an average high-temperature of 3.5°C (38.3°F) and an average low-temperature of -4.1°C (24.6°F). Weather in January »

Weather in February

February, the last month of the winter, in Nagano, is also a wintry month, with average temperature ranging between min -3.8°C (25.2°F) and max 4.7°C (40.5°F). In Nagano, the average high-temperature in February is essentially the same as in January - a still wintry 4.7°C (40.5°F). Weather in February »

Weather in March

March, the first month of the spring, in Nagano, is a frosty month, with average temperature fluctuating between -0.8°C (30.6°F) and 9.5°C (49.1°F). In March, the average high-temperature marginally rises, from a wintry 4.7°C (40.5°F) in February, to a chilly 9.5°C (49.1°F). Weather in March »

Weather in April

April in Nagano, Japan, is a comfortable spring month, with average temperature fluctuating between 4.9°C (40.8°F) and 17.3°C (63.1°F). In Nagano, the average high-temperature increases, from a chilly 9.5°C (49.1°F) in March, to a comfortable 17.3°C (63.1°F). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Nagano, Japan, with average temperature fluctuating between 22.5°C (72.5°F) and 10.5°C (50.9°F). In Nagano, the average high-temperature increases, from a comfortable 17.3°C (63.1°F) in April, to an agreeable 22.5°C (72.5°F). Weather in May »

Weather in June

June, the first month of the summer, in Nagano, is a moderately hot month, with average temperature ranging between min 15.8°C (60.4°F) and max 25.7°C (78.3°F). In Nagano, Japan, the average high-temperature slightly increases, from an agreeable 22.5°C (72.5°F) in May, to a moderately hot 25.7°C (78.3°F). Weather in June »

Weather in July

July, like June, in Nagano, Japan, is another warm summer month, with average temperature ranging between min 20°C (68°F) and max 29.1°C (84.4°F). In Nagano, the average high-temperature in July slightly increases, from a moderately hot 25.7°C (78.3°F) in June, to a still warm 29.1°C (84.4°F). Weather in July »

Weather in August

The last month of the summer, August, is a hot month in Nagano, Japan, with average temperature ranging between min 21.3°C (70.3°F) and max 31°C (87.8°F). The warmest month is August, with an average high-temperature of 31°C (87.8°F) and an average low-temperature of 21.3°C (70.3°F). In August, the average heat index is estimated at a sweltering 38.2°C (100.8°F). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Nagano, Japan, with average temperature fluctuating between 16.9°C (62.4°F) and 25.6°C (78.1°F). In Nagano, the average high-temperature in September drops, from a tropical 31°C (87.8°F) in August, to a warm 25.6°C (78.1°F). Weather in September »

Weather in October

October, like September, in Nagano, Japan, is another enjoyable autumn month, with average temperature ranging between min 9.7°C (49.5°F) and max 19.2°C (66.6°F). In Nagano, the average high-temperature in October decreases, from a warm 25.6°C (78.1°F) in September, to an enjoyable 19.2°C (66.6°F). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Nagano, Japan, with average temperature varying between 3.1°C (37.6°F) and 13°C (55.4°F). In Nagano, the average high-temperature drops, from an enjoyable 19.2°C (66.6°F) in October, to a moderate 13°C (55.4°F). Weather in November »

Weather in December

December, the first month of the winter, in Nagano, is still a chilly month, with average temperature ranging between max 6.8°C (44.2°F) and min -1.6°C (29.1°F). In Nagano, the average high-temperature drops, from a mild 13°C (55.4°F) in November, to a frosty 6.8°C (44.2°F). Weather in December »
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FAQ

What is the coldest month in Nagano?

With an average high-temperature of 3.5°C (38.3°F) and an average low-temperature of -4.1°C (24.6°F), January is the coldest month.

What is the most humid month in Nagano?

The most humid month in Nagano, Japan, is January, with an average relative humidity of 78%.

How much does it rain in Nagano?

Throughout the year, in Nagano, Japan, there are 129.8 rainfall days, and 932.7mm (36.72") of precipitation is accumulated.

When does it snow in Nagano?

January through April, November and December are months with snowfall in Nagano.

How much does it snow in Nagano?

In Nagano, Japan, during the entire year, snow falls for 63 days, and aggregates up to 2570mm (101.18") of snow.

What is the snowiest month in Nagano?

The month with the most snowfall is January when snow falls for 22.9 days and typically aggregates up to 980mm (38.58") of snow.

What is the month with the least sunshine in Nagano?

January has the least sunshine of the year in Nagano, with an average of 4.1h of sunshine.

What is the least humid month in Nagano?

With an average relative humidity of 61%, April is the least humid month.

When it does not snow in Nagano?

In Nagano snow does not fall in May through October.

What month has the most sunshine in Nagano?

The month with the most sunshine is May, with an average of 6.7h of sunshine.

When are the longest days in Nagano?

With an average of 14.6h of daylight, June has the longest days of the year.

What is the wettest month in Nagano?

The month with the most rainfall is July when the rain falls for 13.1 days and typically aggregates up to 134.4mm (5.29") of precipitation.

What is the warmest month in Nagano?

August is the warmest month in Nagano, Japan, with an average high-temperature of 31°C (87.8°F) and an average low-temperature of 21.3°C (70.3°F).

What is the driest month in Nagano?

The month with the least rainfall in Nagano, Japan, is November when the rain falls for 8.6 days and typically collects 44.3mm (1.74") of precipitation.

What is the month with the shortest days in Nagano?

December has the shortest days of the year in Nagano, with an average of 9.7h of daylight.

Average rainfall
Nagano, Japan

Average rainfall - Nagano, Japan

The wettest month (with the highest rainfall) is July (134.4mm).
The driest month (with the least rainfall) is November (44.3mm).

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Average rainfall days
Nagano, Japan

Average rainfall days - Nagano, Japan

The month with the highest number of rainy days is July (13.1 days).
The month with the least rainy days is November (8.6 days).

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Average snowfall
Nagano, Japan

Average snowfall - Nagano, Japan

The month with the highest snowfall is January (980mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days
Nagano, Japan

Average snowfall days - Nagano, Japan

The month with the highest number of snowfall days is January (22.9 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight / Average sunshine
Nagano, Japan

Average daylight / Average sunshine - Nagano, Japan

The month with the longest days is June (Average daylight: 14.6h).
The month with the shortest days is December (Average daylight: 9.7h).

The month with the most sunshine is May (Average sunshine: 6.7h).
The month with the least sunshine is January (Average sunshine: 4.1h).

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