Morioka, Iwate Weather by Month and Climate Averages

How much rain does Morioka get?

Morioka gets 1183 mm of precipitation in an average year, spread over about 133 days with measurable rain. That is more rainy days than 70% of Japan.

July is the wettest month, with 178 mm. February is the driest, with 49 mm. July has the most rainy days, about 13.

The longest dry spell in the last five years lasted 18 days, to February 11, 2022.

Morioka weather by month

Morioka weather in January

In January, Morioka averages a high of 2°C and a low of -6°C. It gets 51 mm of precipitation over about 11 rainy days. The sun is out about 28% of daylight hours. The January record high is 13°C (1988) and the record low is -16°C (1977).

Morioka weather in February

In February, Morioka averages a high of 3°C and a low of -6°C. It gets 49 mm of precipitation over about 11 rainy days. The sun is out about 28% of daylight hours. The February record high is 16°C (2026) and the record low is -15°C (1986).

Morioka weather in March

In March, Morioka averages a high of 8°C and a low of -3°C. It gets 75 mm of precipitation over about 12 rainy days. The sun is out about 34% of daylight hours. The March record high is 21°C (2004) and the record low is -13°C (1974).

Morioka weather in April

In April, Morioka averages a high of 14°C and a low of 2°C. It gets 74 mm of precipitation over about 11 rainy days. The sun is out about 39% of daylight hours. The April record high is 29°C (2015) and the record low is -7°C (1984).

Morioka weather in May

In May, Morioka averages a high of 21°C and a low of 8°C. It gets 97 mm of precipitation over about 10 rainy days. The sun is out about 30% of daylight hours. The May record high is 33°C (2019) and the record low is -1°C (1987). May is one of the most comfortable months to visit.

Morioka weather in June

In June, Morioka averages a high of 24°C and a low of 14°C. It gets 101 mm of precipitation over about 9 rainy days. The sun is out about 24% of daylight hours. The June record high is 34°C (1987) and the record low is 2°C (1972). June is one of the most comfortable months to visit.

Morioka weather in July

In July, Morioka averages a high of 27°C and a low of 18°C. It gets 178 mm of precipitation over about 13 rainy days. The sun is out about 17% of daylight hours. The July record high is 37°C (2025) and the record low is 4°C (1976).

Morioka weather in August

In August, Morioka averages a high of 28°C and a low of 19°C. It gets 169 mm of precipitation over about 11 rainy days. The sun is out about 22% of daylight hours. The August record high is 37°C (2025) and the record low is 9°C (1991).

Morioka weather in September

In September, Morioka averages a high of 24°C and a low of 15°C. It gets 142 mm of precipitation over about 11 rainy days. The sun is out about 21% of daylight hours. The September record high is 34°C (2010) and the record low is 4°C (1970). September is one of the most comfortable months to visit.

Morioka weather in October

In October, Morioka averages a high of 18°C and a low of 7°C. It gets 105 mm of precipitation over about 10 rainy days. The sun is out about 28% of daylight hours. The October record high is 29°C (2019) and the record low is -3°C (1970). October is one of the most comfortable months to visit.

Morioka weather in November

In November, Morioka averages a high of 11°C and a low of 1°C. It gets 76 mm of precipitation over about 12 rainy days. The sun is out about 34% of daylight hours. The November record high is 21°C (1979) and the record low is -7°C (1998).

Morioka weather in December

In December, Morioka averages a high of 4°C and a low of -3°C. It gets 66 mm of precipitation over about 12 rainy days. The sun is out about 28% of daylight hours. The December record high is 18°C (1990) and the record low is -14°C (1976).

Sunshine, humidity and wind in Morioka

April is the sunniest month in Morioka, with sunshine about 39% of daylight hours. July is the cloudiest, at 17%. Over the year the sun shines about 28% of daylight hours. Morioka is cloudier than 98% of Japan.

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

Morioka has about 8 days a year above 32°C. Morioka is cooler than 73% of Japan.

First and last freeze in Morioka

The first fall freeze in Morioka typically comes around November 4, and the last spring freeze around April 20. That leaves a frost-free growing season of about 198 days.

Morioka weather records

The hottest temperature on record at the Morioka station is 37°C, on August 3, 2025. The coldest is -16°C, on January 2, 1977.

The wettest day on record brought 118 mm of rain, on August 5, 1979.

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

The best time to visit Morioka

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

Winter (December–February) is cold, with average highs around 3°C and lows near -5°C.

Spring (March–May) is mild, with average highs around 14°C and lows near 3°C.

Summer (June–August) is warm, with average highs around 27°C and lows near 17°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 18°C and lows near 8°C.

Morioka climate questions

How much rain does Morioka get?

Morioka gets 1183 mm of precipitation in an average year, over about 133 rainy days.

What is the wettest month in Morioka?

July is the wettest month in Morioka, with 178 mm. February is the driest, with 49 mm.

How many rainy days does Morioka have a year?

Morioka has about 133 days with measurable rain in an average year. July has the most, about 13.

What is the hottest month in Morioka?

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

What is the coldest month in Morioka?

January is the coldest month in Morioka, with an average low of -6°C.

What is the record high temperature in Morioka?

The record high at the Morioka station is 37°C, set on August 3, 2025. The record low is -16°C, on January 2, 1977.

What is the sunniest month in Morioka?

April is the sunniest month in Morioka, with sunshine about 39% of daylight hours. July is the cloudiest.

When is the first frost in Morioka?

The first fall freeze in Morioka typically comes around November 4. The last spring freeze is around April 20.

What is the best time to visit Morioka?

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