Takasaki, Gunma Weather by Month and Climate Averages

Takasaki, Gunma gets 1169 mm of precipitation a year over about 99 rainy days. August is the warmest month (average high 32°C) and January the coldest (average low -1°C).

Takasaki climate at a glance

Humid subtropical climate

Takasaki, Gunma has hot summers and chilly winters. Daytime highs range from about 9°C in January to 32°C in August. September is usually the wettest month. The most comfortable time to visit is typically April to May and October, when daytime highs sit near 22°C.

How much rain does Takasaki get?

Takasaki gets 1169 mm of precipitation in an average year, spread over about 99 days with measurable rain. That is fewer rainy days than 77% of Japan.

September is the wettest month, with 193 mm. December is the driest, with 22 mm. July has the most rainy days, about 15.

The longest dry spell in the last five years lasted 41 days, to February 6, 2026.

Takasaki weather by month

Takasaki weather in January

In January, Takasaki averages a high of 9°C and a low of -1°C. It gets 26 mm of precipitation over about 3 rainy days. The sun is out about 57% of daylight hours. The January record high is 19°C (1996) and the record low is -8°C (1970).

Takasaki weather in February

In February, Takasaki averages a high of 10°C and a low of -1°C. It gets 24 mm of precipitation over about 4 rainy days. The sun is out about 54% of daylight hours. The February record high is 23°C (1987) and the record low is -9°C (1981).

Takasaki weather in March

In March, Takasaki averages a high of 14°C and a low of 3°C. It gets 53 mm of precipitation over about 7 rainy days. The sun is out about 45% of daylight hours. The March record high is 27°C (1998) and the record low is -7°C (1977).

Takasaki weather in April

In April, Takasaki averages a high of 19°C and a low of 8°C. It gets 71 mm of precipitation over about 8 rainy days. The sun is out about 42% of daylight hours. The April record high is 32°C (1983) and the record low is -2°C (1978). April is one of the most comfortable months to visit.

Takasaki weather in May

In May, Takasaki averages a high of 24°C and a low of 13°C. It gets 94 mm of precipitation over about 9 rainy days. The sun is out about 31% of daylight hours. The May record high is 37°C (1993) and the record low is 3°C (1991). May is one of the most comfortable months to visit.

Takasaki weather in June

In June, Takasaki averages a high of 27°C and a low of 18°C. It gets 144 mm of precipitation over about 13 rainy days. The sun is out about 22% of daylight hours. The June record high is 39°C (2022) and the record low is 8°C (1978).

Takasaki weather in July

In July, Takasaki averages a high of 31°C and a low of 22°C. It gets 179 mm of precipitation over about 15 rainy days. The sun is out about 23% of daylight hours. The July record high is 40°C (2001) and the record low is 12°C (1976).

Takasaki weather in August

In August, Takasaki averages a high of 32°C and a low of 23°C. It gets 186 mm of precipitation over about 12 rainy days. The sun is out about 31% of daylight hours. The August record high is 41°C (2025) and the record low is 15°C (1976).

Takasaki weather in September

In September, Takasaki averages a high of 27°C and a low of 19°C. It gets 193 mm of precipitation over about 12 rainy days. The sun is out about 24% of daylight hours. The September record high is 38°C (1984) and the record low is 8°C (1995).

Takasaki weather in October

In October, Takasaki averages a high of 22°C and a low of 13°C. It gets 137 mm of precipitation over about 8 rainy days. The sun is out about 40% of daylight hours. The October record high is 32°C (2012) and the record low is 3°C (1971). October is one of the most comfortable months to visit.

Takasaki weather in November

In November, Takasaki averages a high of 17°C and a low of 7°C. It gets 40 mm of precipitation over about 5 rainy days. The sun is out about 59% of daylight hours. The November record high is 26°C (2019) and the record low is -2°C (1974).

Takasaki weather in December

In December, Takasaki averages a high of 12°C and a low of 2°C. It gets 22 mm of precipitation over about 3 rainy days. The sun is out about 62% of daylight hours. The December record high is 25°C (1990) and the record low is -6°C (1976).

Sunshine, humidity and wind in Takasaki

December is the sunniest month in Takasaki, with sunshine about 62% of daylight hours. June is the cloudiest, at 22%. Over the year the sun shines about 41% of daylight hours. Takasaki is sunnier than 68% of Japan.

Humidity peaks in September at 82% and is lowest in February at 52%.

Takasaki has about 29 days a year above 32°C. Takasaki is hotter than 76% of Japan.

First and last freeze in Takasaki

The first fall freeze in Takasaki typically comes around December 9, and the last spring freeze around March 23. That leaves a frost-free growing season of about 261 days.

Takasaki weather records

The hottest temperature on record at the Takasaki station is 41°C, on August 5, 2025. The coldest is -9°C, on February 27, 1981.

The wettest day on record brought 340 mm of rain, on August 23, 1993.

45 all-time records have been set at the station since 1970.

The best time to visit Takasaki

The most comfortable time to visit is typically April to May and October, when daytime highs sit near 22°C.

Winter (December–February) is chilly, with average highs around 10°C and lows near 0°C.

Spring (March–May) is mild, with average highs around 19°C and lows near 8°C.

Summer (June–August) is hot, with average highs around 30°C and lows near 21°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 22°C and lows near 13°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineRecord highRecord low
January26 mm355%57%19°-8°
February24 mm452%54%23°-9°
March53 mm757%45%27°-7°
April71 mm861%42%32°-2°
May94 mm968%31%37°
June144 mm1377%22%39°
July179 mm1579%23%40°12°
August186 mm1280%31%41°15°
September193 mm1282%24%38°
October137 mm874%40%32°
November40 mm567%59%26°-2°
December22 mm357%62%25°-6°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Takasaki climate questions

How much rain does Takasaki get?

Takasaki gets 1169 mm of precipitation in an average year, over about 99 rainy days.

What is the wettest month in Takasaki?

September is the wettest month in Takasaki, with 193 mm. December is the driest, with 22 mm.

How many rainy days does Takasaki have a year?

Takasaki has about 99 days with measurable rain in an average year. July has the most, about 15.

What is the hottest month in Takasaki?

August is the warmest month in Takasaki, with an average high of 32°C.

What is the coldest month in Takasaki?

January is the coldest month in Takasaki, with an average low of -1°C.

What is the record high temperature in Takasaki?

The record high at the Takasaki station is 41°C, set on August 5, 2025. The record low is -9°C, on February 27, 1981.

What is the sunniest month in Takasaki?

December is the sunniest month in Takasaki, with sunshine about 62% of daylight hours. June is the cloudiest.

When is the first frost in Takasaki?

The first fall freeze in Takasaki typically comes around December 9. The last spring freeze is around March 23.

What is the best time to visit Takasaki?

The most comfortable time to visit is typically April to May and October, when daytime highs sit near 22°C.

Source: NOAA GHCN-Daily station MAEBASHI (9 km away).

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Normals from NOAA GHCN-Daily station MAEBASHI.