Kofu, Yamanashi Weather by Month and Climate Averages

How much rain does Kofu get?

Kofu gets 1022 mm of precipitation in an average year, spread over about 86 days with measurable rain. That is fewer rainy days than 95% of Japan.

September is the wettest month, with 168 mm. December is the driest, with 33 mm. July has the most rainy days, about 11.

The longest dry spell in the last five years lasted 24 days, to December 11, 2023.

Kofu weather by month

Kofu weather in January

In January, Kofu averages a high of 9°C and a low of -3°C. It gets 35 mm of precipitation over about 4 rainy days. The sun is out about 56% of daylight hours. The January record high is 19°C (1996) and the record low is -11°C (1986).

Kofu weather in February

In February, Kofu averages a high of 11°C and a low of -2°C. It gets 39 mm of precipitation over about 5 rainy days. The sun is out about 52% of daylight hours. The February record high is 25°C (2009) and the record low is -11°C (1984).

Kofu weather in March

In March, Kofu averages a high of 15°C and a low of 2°C. It gets 76 mm of precipitation over about 8 rainy days. The sun is out about 43% of daylight hours. The March record high is 27°C (1996) and the record low is -8°C (1977).

Kofu weather in April

In April, Kofu averages a high of 21°C and a low of 8°C. It gets 72 mm of precipitation over about 7 rainy days. The sun is out about 38% of daylight hours. The April record high is 33°C (2004) and the record low is -3°C (2001). April is one of the most comfortable months to visit.

Kofu weather in May

In May, Kofu averages a high of 26°C and a low of 13°C. It gets 74 mm of precipitation over about 7 rainy days. The sun is out about 29% of daylight hours. The May record high is 35°C (2019) and the record low is 2°C (1972). May is one of the most comfortable months to visit.

Kofu weather in June

In June, Kofu averages a high of 28°C and a low of 18°C. It gets 102 mm of precipitation over about 10 rainy days. The sun is out about 19% of daylight hours. The June record high is 38°C (2011) and the record low is 9°C (1981).

Kofu weather in July

In July, Kofu averages a high of 32°C and a low of 22°C. It gets 121 mm of precipitation over about 11 rainy days. The sun is out about 21% of daylight hours. The July record high is 41°C (2004) and the record low is 13°C (1976).

Kofu weather in August

In August, Kofu averages a high of 33°C and a low of 23°C. It gets 109 mm of precipitation over about 9 rainy days. The sun is out about 28% of daylight hours. The August record high is 41°C (2013) and the record low is 15°C (1981).

Kofu weather in September

In September, Kofu averages a high of 28°C and a low of 19°C. It gets 168 mm of precipitation over about 10 rainy days. The sun is out about 24% of daylight hours. The September record high is 38°C (1992) and the record low is 8°C (1992).

Kofu weather in October

In October, Kofu averages a high of 22°C and a low of 12°C. It gets 148 mm of precipitation over about 8 rainy days. The sun is out about 37% of daylight hours. The October record high is 33°C (1979) and the record low is 2°C (1982). October is one of the most comfortable months to visit.

Kofu weather in November

In November, Kofu averages a high of 17°C and a low of 5°C. It gets 44 mm of precipitation over about 5 rainy days. The sun is out about 52% of daylight hours. The November record high is 28°C (2023) and the record low is -4°C (1973). November is one of the most comfortable months to visit.

Kofu weather in December

In December, Kofu averages a high of 12°C and a low of -1°C. It gets 33 mm of precipitation over about 4 rainy days. The sun is out about 61% of daylight hours. The December record high is 25°C (2004) and the record low is -9°C (1976).

Sunshine, humidity and wind in Kofu

December is the sunniest month in Kofu, with sunshine about 61% of daylight hours. June is the cloudiest, at 19%. Over the year the sun shines about 38% of daylight hours. Kofu is sunnier than 53% of Japan.

Humidity peaks in July at 78% and is lowest in February at 54%.

Kofu has about 39 days a year above 32°C. Kofu is hotter than 96% of Japan.

First and last freeze in Kofu

The first fall freeze in Kofu typically comes around November 27, and the last spring freeze around March 26. That leaves a frost-free growing season of about 246 days.

Kofu weather records

The hottest temperature on record at the Kofu station is 41°C, on August 10, 2013. The coldest is -11°C, on January 6, 1986.

The wettest day on record brought 224 mm of rain, on September 12, 2000.

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

The best time to visit Kofu

The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.

Winter (December–February) is chilly, with average highs around 11°C and lows near -2°C.

Spring (March–May) is warm, with average highs around 20°C and lows near 8°C.

Summer (June–August) is hot, with average highs around 31°C and lows near 21°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 23°C and lows near 12°C.

Kofu climate questions

How much rain does Kofu get?

Kofu gets 1022 mm of precipitation in an average year, over about 86 rainy days.

What is the wettest month in Kofu?

September is the wettest month in Kofu, with 168 mm. December is the driest, with 33 mm.

How many rainy days does Kofu have a year?

Kofu has about 86 days with measurable rain in an average year. July has the most, about 11.

What is the hottest month in Kofu?

August is the warmest month in Kofu, with an average high of 33°C.

What is the coldest month in Kofu?

January is the coldest month in Kofu, with an average low of -3°C.

What is the record high temperature in Kofu?

The record high at the Kofu station is 41°C, set on August 10, 2013. The record low is -11°C, on January 6, 1986.

What is the sunniest month in Kofu?

December is the sunniest month in Kofu, with sunshine about 61% of daylight hours. June is the cloudiest.

When is the first frost in Kofu?

The first fall freeze in Kofu typically comes around November 27. The last spring freeze is around March 26.

What is the best time to visit Kofu?

The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.