Sapporo, Hokkaido Weather by Month and Climate Averages

How much rain does Sapporo get?

Sapporo gets 1100 mm of precipitation in an average year, spread over about 161 days with measurable rain. That is more rainy days than 88% of Japan.

September is the wettest month, with 130 mm. April is the driest, with 51 mm. January has the most rainy days, about 21.

The longest dry spell in the last five years lasted 13 days, to April 16, 2024.

Sapporo weather by month

Sapporo weather in January

In January, Sapporo averages a high of -1°C and a low of -7°C. It gets 106 mm of precipitation over about 21 rainy days. The sun is out about 29% of daylight hours. The January record high is 8°C (1983) and the record low is -19°C (1977).

Sapporo weather in February

In February, Sapporo averages a high of 1°C and a low of -7°C. It gets 93 mm of precipitation over about 18 rainy days. The sun is out about 29% of daylight hours. The February record high is 10°C (1996) and the record low is -19°C (1978).

Sapporo weather in March

In March, Sapporo averages a high of 4°C and a low of -3°C. It gets 77 mm of precipitation over about 17 rainy days. The sun is out about 39% of daylight hours. The March record high is 17°C (2018) and the record low is -16°C (1986).

Sapporo weather in April

In April, Sapporo averages a high of 12°C and a low of 3°C. It gets 51 mm of precipitation over about 11 rainy days. The sun is out about 43% of daylight hours. The April record high is 28°C (1998) and the record low is -6°C (1978).

Sapporo weather in May

In May, Sapporo averages a high of 18°C and a low of 8°C. It gets 52 mm of precipitation over about 10 rainy days. The sun is out about 35% of daylight hours. The May record high is 34°C (2019) and the record low is 1°C (1977). May is one of the most comfortable months to visit.

Sapporo weather in June

In June, Sapporo averages a high of 22°C and a low of 13°C. It gets 57 mm of precipitation over about 9 rainy days. The sun is out about 29% of daylight hours. The June record high is 33°C (2025) and the record low is 4°C (1973). June is one of the most comfortable months to visit.

Sapporo weather in July

In July, Sapporo averages a high of 26°C and a low of 17°C. It gets 84 mm of precipitation over about 8 rainy days. The sun is out about 29% of daylight hours. The July record high is 36°C (2000) and the record low is 9°C (1976). July is one of the most comfortable months to visit.

Sapporo weather in August

In August, Sapporo averages a high of 27°C and a low of 19°C. It gets 122 mm of precipitation over about 9 rainy days. The sun is out about 26% of daylight hours. The August record high is 36°C (2000) and the record low is 9°C (1971). August is one of the most comfortable months to visit.

Sapporo weather in September

In September, Sapporo averages a high of 23°C and a low of 14°C. It gets 130 mm of precipitation over about 11 rainy days. The sun is out about 30% of daylight hours. The September record high is 33°C (1990) and the record low is 5°C (1980).

Sapporo weather in October

In October, Sapporo averages a high of 16°C and a low of 7°C. It gets 102 mm of precipitation over about 12 rainy days. The sun is out about 37% of daylight hours. The October record high is 28°C (2025) and the record low is -1°C (1970).

Sapporo weather in November

In November, Sapporo averages a high of 9°C and a low of 1°C. It gets 110 mm of precipitation over about 17 rainy days. The sun is out about 34% of daylight hours. The November record high is 22°C (2003) and the record low is -8°C (1974).

Sapporo weather in December

In December, Sapporo averages a high of 2°C and a low of -4°C. It gets 116 mm of precipitation over about 19 rainy days. The sun is out about 31% of daylight hours. The December record high is 15°C (1989) and the record low is -14°C (1970).

Sunshine, humidity and wind in Sapporo

April is the sunniest month in Sapporo, with sunshine about 43% of daylight hours. August is the cloudiest, at 26%. Over the year the sun shines about 33% of daylight hours. Sapporo is cloudier than 91% of Japan.

Humidity peaks in August at 85% and is lowest in April at 71%.

Sapporo has about 4 days a year above 32°C. Sapporo is cooler than 86% of Japan.

First and last freeze in Sapporo

The first fall freeze in Sapporo typically comes around November 12, and the last spring freeze around April 10. That leaves a frost-free growing season of about 216 days.

Sapporo weather records

The hottest temperature on record at the Sapporo station is 36°C, on August 7, 1994. The coldest is -19°C, on February 17, 1978.

The wettest day on record brought 207 mm of rain, on August 23, 1981.

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

The best time to visit Sapporo

The most comfortable time to visit is typically May to August, when daytime highs sit near 23°C.

Winter (December–February) is cold, with average highs around 1°C and lows near -6°C.

Spring (March–May) is chilly, with average highs around 12°C and lows near 3°C.

Summer (June–August) is warm, with average highs around 25°C and lows near 16°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 16°C and lows near 8°C.

Sapporo climate questions

How much rain does Sapporo get?

Sapporo gets 1100 mm of precipitation in an average year, over about 161 rainy days.

What is the wettest month in Sapporo?

September is the wettest month in Sapporo, with 130 mm. April is the driest, with 51 mm.

How many rainy days does Sapporo have a year?

Sapporo has about 161 days with measurable rain in an average year. January has the most, about 21.

What is the hottest month in Sapporo?

August is the warmest month in Sapporo, with an average high of 27°C.

What is the coldest month in Sapporo?

January is the coldest month in Sapporo, with an average low of -7°C.

What is the record high temperature in Sapporo?

The record high at the Sapporo station is 36°C, set on August 7, 1994. The record low is -19°C, on February 17, 1978.

What is the sunniest month in Sapporo?

April is the sunniest month in Sapporo, with sunshine about 43% of daylight hours. August is the cloudiest.

When is the first frost in Sapporo?

The first fall freeze in Sapporo typically comes around November 12. The last spring freeze is around April 10.

What is the best time to visit Sapporo?

The most comfortable time to visit is typically May to August, when daytime highs sit near 23°C.