Sendai, Miyagi Weather by Month and Climate Averages

How much rain does Sendai get?

Sendai gets 1186 mm of precipitation in an average year, spread over about 114 days with measurable rain. That is more rainy days than 50% of Japan.

September is the wettest month, with 176 mm. February is the driest, with 33 mm. July has the most rainy days, about 15.

The longest dry spell in the last five years lasted 30 days, to February 17, 2026.

Sendai weather by month

Sendai weather in January

In January, Sendai averages a high of 6°C and a low of -2°C. It gets 40 mm of precipitation over about 8 rainy days. The sun is out about 40% of daylight hours. The January record high is 17°C (1979) and the record low is -10°C (1976).

Sendai weather in February

In February, Sendai averages a high of 7°C and a low of -2°C. It gets 33 mm of precipitation over about 7 rainy days. The sun is out about 40% of daylight hours. The February record high is 21°C (2016) and the record low is -9°C (1978).

Sendai weather in March

In March, Sendai averages a high of 10°C and a low of 1°C. It gets 67 mm of precipitation over about 8 rainy days. The sun is out about 39% of daylight hours. The March record high is 24°C (2009) and the record low is -8°C (1970).

Sendai weather in April

In April, Sendai averages a high of 16°C and a low of 6°C. It gets 89 mm of precipitation over about 8 rainy days. The sun is out about 41% of daylight hours. The April record high is 30°C (2018) and the record low is -2°C (1978).

Sendai weather in May

In May, Sendai averages a high of 21°C and a low of 11°C. It gets 104 mm of precipitation over about 9 rainy days. The sun is out about 35% of daylight hours. The May record high is 32°C (2019) and the record low is 2°C (1992). May is one of the most comfortable months to visit.

Sendai weather in June

In June, Sendai averages a high of 23°C and a low of 16°C. It gets 139 mm of precipitation over about 11 rainy days. The sun is out about 26% of daylight hours. The June record high is 35°C (2022) and the record low is 8°C (1972). June is one of the most comfortable months to visit.

Sendai weather in July

In July, Sendai averages a high of 27°C and a low of 20°C. It gets 162 mm of precipitation over about 15 rainy days. The sun is out about 20% of daylight hours. The July record high is 37°C (2018) and the record low is 9°C (1976).

Sendai weather in August

In August, Sendai averages a high of 28°C and a low of 21°C. It gets 144 mm of precipitation over about 12 rainy days. The sun is out about 29% of daylight hours. The August record high is 37°C (2018) and the record low is 13°C (1980).

Sendai weather in September

In September, Sendai averages a high of 25°C and a low of 18°C. It gets 176 mm of precipitation over about 12 rainy days. The sun is out about 22% of daylight hours. The September record high is 36°C (1985) and the record low is 8°C (2001).

Sendai weather in October

In October, Sendai averages a high of 20°C and a low of 11°C. It gets 133 mm of precipitation over about 8 rainy days. The sun is out about 36% of daylight hours. The October record high is 30°C (1998) and the record low is 2°C (1983). October is one of the most comfortable months to visit.

Sendai weather in November

In November, Sendai averages a high of 14°C and a low of 5°C. It gets 57 mm of precipitation over about 7 rainy days. The sun is out about 47% of daylight hours. The November record high is 24°C (1979) and the record low is -5°C (1970).

Sendai weather in December

In December, Sendai averages a high of 8°C and a low of 1°C. It gets 43 mm of precipitation over about 8 rainy days. The sun is out about 40% of daylight hours. The December record high is 22°C (1990) and the record low is -9°C (1976).

Sunshine, humidity and wind in Sendai

November is the sunniest month in Sendai, with sunshine about 47% of daylight hours. July is the cloudiest, at 20%. Over the year the sun shines about 35% of daylight hours. Sendai is cloudier than 81% of Japan.

Humidity peaks in July at 84% and is lowest in April at 65%.

Sendai has about 8 days a year above 32°C. Sendai is cooler than 74% of Japan.

First and last freeze in Sendai

The first fall freeze in Sendai typically comes around December 3, and the last spring freeze around March 28. That leaves a frost-free growing season of about 250 days.

Sendai weather records

The hottest temperature on record at the Sendai station is 37°C, on August 1, 2018. The coldest is -10°C, on January 23, 1976.

The wettest day on record brought 296 mm of rain, on August 5, 1986.

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

The best time to visit Sendai

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

Winter (December–February) is chilly, with average highs around 7°C and lows near -1°C.

Spring (March–May) is mild, with average highs around 15°C and lows near 6°C.

Summer (June–August) is warm, with average highs around 26°C and lows near 19°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 20°C and lows near 11°C.

Sendai climate questions

How much rain does Sendai get?

Sendai gets 1186 mm of precipitation in an average year, over about 114 rainy days.

What is the wettest month in Sendai?

September is the wettest month in Sendai, with 176 mm. February is the driest, with 33 mm.

How many rainy days does Sendai have a year?

Sendai has about 114 days with measurable rain in an average year. July has the most, about 15.

What is the hottest month in Sendai?

August is the warmest month in Sendai, with an average high of 28°C.

What is the coldest month in Sendai?

January is the coldest month in Sendai, with an average low of -2°C.

What is the record high temperature in Sendai?

The record high at the Sendai station is 37°C, set on August 1, 2018. The record low is -10°C, on January 23, 1976.

What is the sunniest month in Sendai?

November is the sunniest month in Sendai, with sunshine about 47% of daylight hours. July is the cloudiest.

When is the first frost in Sendai?

The first fall freeze in Sendai typically comes around December 3. The last spring freeze is around March 28.

What is the best time to visit Sendai?

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