Mito, Ibaraki Weather by Month and Climate Averages

How much rain does Mito get?

Mito gets 1250 mm of precipitation in an average year, spread over about 102 days with measurable rain. That is fewer rainy days than 72% of Japan.

September is the wettest month, with 185 mm. December is the driest, with 42 mm. June has the most rainy days, about 12.

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

Mito weather by month

Mito weather in January

In January, Mito averages a high of 9°C and a low of -3°C. It gets 43 mm of precipitation over about 4 rainy days. The sun is out about 59% of daylight hours. The January record high is 18°C (1996) and the record low is -11°C (1970).

Mito weather in February

In February, Mito averages a high of 10°C and a low of -2°C. It gets 47 mm of precipitation over about 6 rainy days. The sun is out about 56% of daylight hours. The February record high is 24°C (2009) and the record low is -10°C (1984).

Mito weather in March

In March, Mito averages a high of 13°C and a low of 1°C. It gets 93 mm of precipitation over about 9 rainy days. The sun is out about 42% of daylight hours. The March record high is 25°C (2007) and the record low is -8°C (1977).

Mito weather in April

In April, Mito averages a high of 18°C and a low of 6°C. It gets 105 mm of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The April record high is 29°C (2015) and the record low is -3°C (1978). April is one of the most comfortable months to visit.

Mito weather in May

In May, Mito averages a high of 22°C and a low of 12°C. It gets 132 mm of precipitation over about 10 rainy days. The sun is out about 29% of daylight hours. The May record high is 33°C (2019) and the record low is 2°C (1991). May is one of the most comfortable months to visit.

Mito weather in June

In June, Mito averages a high of 25°C and a low of 17°C. It gets 132 mm of precipitation over about 12 rainy days. The sun is out about 24% of daylight hours. The June record high is 36°C (2022) and the record low is 9°C (2010). June is one of the most comfortable months to visit.

Mito weather in July

In July, Mito averages a high of 29°C and a low of 21°C. It gets 125 mm of precipitation over about 11 rainy days. The sun is out about 27% of daylight hours. The July record high is 38°C (1997) and the record low is 8°C (2026).

Mito weather in August

In August, Mito averages a high of 30°C and a low of 22°C. It gets 103 mm of precipitation over about 8 rainy days. The sun is out about 39% of daylight hours. The August record high is 38°C (1996) and the record low is 13°C (1980).

Mito weather in September

In September, Mito averages a high of 27°C and a low of 18°C. It gets 185 mm of precipitation over about 11 rainy days. The sun is out about 31% of daylight hours. The September record high is 37°C (2000) and the record low is 8°C (1992).

Mito weather in October

In October, Mito averages a high of 21°C and a low of 12°C. It gets 169 mm of precipitation over about 9 rainy days. The sun is out about 40% of daylight hours. The October record high is 33°C (1979) and the record low is 1°C (1984). October is one of the most comfortable months to visit.

Mito weather in November

In November, Mito averages a high of 16°C and a low of 5°C. It gets 73 mm of precipitation over about 7 rainy days. The sun is out about 56% of daylight hours. The November record high is 26°C (1977) and the record low is -4°C (1976).

Mito weather in December

In December, Mito averages a high of 12°C and a low of 0°C. It gets 42 mm of precipitation over about 5 rainy days. The sun is out about 63% of daylight hours. The December record high is 25°C (2004) and the record low is -8°C (1973).

Sunshine, humidity and wind in Mito

December is the sunniest month in Mito, with sunshine about 63% of daylight hours. June is the cloudiest, at 24%. Over the year the sun shines about 42% of daylight hours. Mito is sunnier than 83% of Japan.

Humidity peaks in July at 85% and is lowest in February at 59%.

Mito has about 16 days a year above 32°C. Mito is cooler than 59% of Japan.

First and last freeze in Mito

The first fall freeze in Mito typically comes around November 26, and the last spring freeze around March 30. That leaves a frost-free growing season of about 241 days.

Mito weather records

The hottest temperature on record at the Mito station is 38°C, on August 15, 1996. The coldest is -11°C, on January 17, 1970.

The wettest day on record brought 244 mm of rain, on August 4, 1986.

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

The best time to visit Mito

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

Winter (December–February) is chilly, with average highs around 10°C and lows near -2°C.

Spring (March–May) is mild, with average highs around 18°C and lows near 6°C.

Summer (June–August) is hot, with average highs around 28°C and lows near 20°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 21°C and lows near 12°C.

Mito climate questions

How much rain does Mito get?

Mito gets 1250 mm of precipitation in an average year, over about 102 rainy days.

What is the wettest month in Mito?

September is the wettest month in Mito, with 185 mm. December is the driest, with 42 mm.

How many rainy days does Mito have a year?

Mito has about 102 days with measurable rain in an average year. June has the most, about 12.

What is the hottest month in Mito?

August is the warmest month in Mito, with an average high of 30°C.

What is the coldest month in Mito?

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

What is the record high temperature in Mito?

The record high at the Mito station is 38°C, set on August 15, 1996. The record low is -11°C, on January 17, 1970.

What is the sunniest month in Mito?

December is the sunniest month in Mito, with sunshine about 63% of daylight hours. June is the cloudiest.

When is the first frost in Mito?

The first fall freeze in Mito typically comes around November 26. The last spring freeze is around March 30.

What is the best time to visit Mito?

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