Sasebo, Nagasaki Weather by Month and Climate Averages

How much rain does Sasebo get?

Sasebo gets 1917 mm of precipitation in an average year, spread over about 97 days with measurable rain. That is fewer rainy days than 85% of Japan.

July is the wettest month, with 326 mm. December is the driest, with 70 mm. July has the most rainy days, about 12.

The longest dry spell in the last five years lasted 15 days, to May 29, 2022.

Sasebo weather by month

Sasebo weather in January

In January, Sasebo averages a high of 9°C and a low of 4°C. It gets 75 mm of precipitation over about 8 rainy days. The sun is out about 36% of daylight hours. The January record high is 18°C (2020) and the record low is -6°C (1970).

Sasebo weather in February

In February, Sasebo averages a high of 11°C and a low of 4°C. It gets 76 mm of precipitation over about 8 rainy days. The sun is out about 37% of daylight hours. The February record high is 21°C (2010) and the record low is -6°C (1977).

Sasebo weather in March

In March, Sasebo averages a high of 13°C and a low of 7°C. It gets 118 mm of precipitation over about 7 rainy days. The sun is out about 37% of daylight hours. The March record high is 22°C (2004) and the record low is -4°C (1977).

Sasebo weather in April

In April, Sasebo averages a high of 18°C and a low of 11°C. It gets 163 mm of precipitation over about 8 rainy days. The sun is out about 39% of daylight hours. The April record high is 26°C (1998) and the record low is 2°C (1972). April is one of the most comfortable months to visit.

Sasebo weather in May

In May, Sasebo averages a high of 22°C and a low of 14°C. It gets 166 mm of precipitation over about 7 rainy days. The sun is out about 35% of daylight hours. The May record high is 29°C (2003) and the record low is 8°C (2014). May is one of the most comfortable months to visit.

Sasebo weather in June

In June, Sasebo averages a high of 24°C and a low of 19°C. It gets 269 mm of precipitation over about 11 rainy days. The sun is out about 23% of daylight hours. The June record high is 31°C (1978) and the record low is 12°C (1978). June is one of the most comfortable months to visit.

Sasebo weather in July

In July, Sasebo averages a high of 28°C and a low of 23°C. It gets 326 mm of precipitation over about 12 rainy days. The sun is out about 25% of daylight hours. The July record high is 39°C (1995) and the record low is 16°C (1976).

Sasebo weather in August

In August, Sasebo averages a high of 30°C and a low of 24°C. It gets 245 mm of precipitation over about 9 rainy days. The sun is out about 42% of daylight hours. The August record high is 36°C (1997) and the record low is 18°C (1977).

Sasebo weather in September

In September, Sasebo averages a high of 27°C and a low of 21°C. It gets 203 mm of precipitation over about 9 rainy days. The sun is out about 42% of daylight hours. The September record high is 33°C (2010) and the record low is 13°C (1973). September is one of the most comfortable months to visit.

Sasebo weather in October

In October, Sasebo averages a high of 22°C and a low of 16°C. It gets 108 mm of precipitation over about 6 rainy days. The sun is out about 54% of daylight hours. The October record high is 30°C (2016) and the record low is 6°C (1986). October is one of the most comfortable months to visit.

Sasebo weather in November

In November, Sasebo averages a high of 17°C and a low of 11°C. It gets 100 mm of precipitation over about 7 rainy days. The sun is out about 50% of daylight hours. The November record high is 27°C (2023) and the record low is 2°C (1970). November is one of the most comfortable months to visit.

Sasebo weather in December

In December, Sasebo averages a high of 12°C and a low of 6°C. It gets 70 mm of precipitation over about 8 rainy days. The sun is out about 39% of daylight hours. The December record high is 23°C (2018) and the record low is -3°C (1973).

Sunshine, humidity and wind in Sasebo

October is the sunniest month in Sasebo, with sunshine about 54% of daylight hours. June is the cloudiest, at 23%. Over the year the sun shines about 38% of daylight hours. Sasebo is sunnier than 51% of Japan.

Humidity peaks in July at 82% and is lowest in December at 64%.

Sasebo has about 5 days a year above 32°C. Sasebo is cooler than 80% of Japan.

Sasebo weather records

The hottest temperature on record at the Sasebo station is 39°C, on July 21, 1995. The coldest is -6°C, on February 16, 1977.

The wettest day on record brought 353 mm of rain, on September 15, 2023.

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

The best time to visit Sasebo

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

Winter (December–February) is chilly, with average highs around 11°C and lows near 5°C.

Spring (March–May) is mild, with average highs around 18°C and lows near 11°C.

Summer (June–August) is warm, with average highs around 27°C and lows near 22°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 22°C and lows near 16°C.

Sasebo climate questions

How much rain does Sasebo get?

Sasebo gets 1917 mm of precipitation in an average year, over about 97 rainy days.

What is the wettest month in Sasebo?

July is the wettest month in Sasebo, with 326 mm. December is the driest, with 70 mm.

How many rainy days does Sasebo have a year?

Sasebo has about 97 days with measurable rain in an average year. July has the most, about 12.

What is the hottest month in Sasebo?

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

What is the coldest month in Sasebo?

January is the coldest month in Sasebo, with an average low of 4°C.

What is the record high temperature in Sasebo?

The record high at the Sasebo station is 39°C, set on July 21, 1995. The record low is -6°C, on February 16, 1977.

What is the sunniest month in Sasebo?

October is the sunniest month in Sasebo, with sunshine about 54% of daylight hours. June is the cloudiest.

What is the best time to visit Sasebo?

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