Tsukuba, Ibaraki Weather by Month and Climate Averages

How much rain does Tsukuba get?

Tsukuba 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.

Tsukuba weather by month

Tsukuba weather in January

In January, Tsukuba 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 60% of daylight hours. The January record high is 18°C (1996) and the record low is -11°C (1970).

Tsukuba weather in February

In February, Tsukuba 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 57% of daylight hours. The February record high is 24°C (2009) and the record low is -10°C (1984).

Tsukuba weather in March

In March, Tsukuba 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 43% of daylight hours. The March record high is 25°C (2007) and the record low is -8°C (1977).

Tsukuba weather in April

In April, Tsukuba 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.

Tsukuba weather in May

In May, Tsukuba 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.

Tsukuba weather in June

In June, Tsukuba 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 22% 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.

Tsukuba weather in July

In July, Tsukuba 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 26% of daylight hours. The July record high is 38°C (1997) and the record low is 8°C (2026).

Tsukuba weather in August

In August, Tsukuba 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 37% of daylight hours. The August record high is 38°C (1996) and the record low is 13°C (1980).

Tsukuba weather in September

In September, Tsukuba 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 30% of daylight hours. The September record high is 37°C (2000) and the record low is 8°C (1992).

Tsukuba weather in October

In October, Tsukuba 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.

Tsukuba weather in November

In November, Tsukuba 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).

Tsukuba weather in December

In December, Tsukuba 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 65% of daylight hours. The December record high is 25°C (2004) and the record low is -8°C (1973).

Sunshine, humidity and wind in Tsukuba

December is the sunniest month in Tsukuba, with sunshine about 65% of daylight hours. June is the cloudiest, at 22%. Over the year the sun shines about 42% of daylight hours. Tsukuba is sunnier than 83% of Japan.

Humidity peaks in September at 79% and is lowest in February at 60%.

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

First and last freeze in Tsukuba

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

Tsukuba weather records

The hottest temperature on record at the Tsukuba 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 Tsukuba

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.

Tsukuba climate questions

How much rain does Tsukuba get?

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

What is the wettest month in Tsukuba?

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

How many rainy days does Tsukuba have a year?

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

What is the hottest month in Tsukuba?

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

What is the coldest month in Tsukuba?

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

What is the record high temperature in Tsukuba?

The record high at the Tsukuba 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 Tsukuba?

December is the sunniest month in Tsukuba, with sunshine about 65% of daylight hours. June is the cloudiest.

When is the first frost in Tsukuba?

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

What is the best time to visit Tsukuba?

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