Isehara, Kanagawa Weather by Month and Climate Averages

How much rain does Isehara get?

Isehara gets 1555 mm of precipitation in an average year, spread over about 103 days with measurable rain. That is fewer rainy days than 68% of Japan.

September is the wettest month, with 228 mm. January is the driest, with 56 mm. June has the most rainy days, about 12.

The longest dry spell in the last five years lasted 22 days, to January 13, 2023.

Isehara weather by month

Isehara weather in January

In January, Isehara averages a high of 10°C and a low of 2°C. It gets 56 mm of precipitation over about 5 rainy days. The sun is out about 58% of daylight hours. The January record high is 19°C (1996) and the record low is -5°C (1970).

Isehara weather in February

In February, Isehara averages a high of 11°C and a low of 3°C. It gets 57 mm of precipitation over about 6 rainy days. The sun is out about 54% of daylight hours. The February record high is 25°C (2009) and the record low is -5°C (1984).

Isehara weather in March

In March, Isehara averages a high of 14°C and a low of 6°C. It gets 125 mm of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The March record high is 25°C (2025) and the record low is -4°C (1971).

Isehara weather in April

In April, Isehara averages a high of 19°C and a low of 11°C. It gets 133 mm of precipitation over about 9 rainy days. The sun is out about 37% of daylight hours. The April record high is 28°C (2004) and the record low is 1°C (2001). April is one of the most comfortable months to visit.

Isehara weather in May

In May, Isehara averages a high of 23°C and a low of 15°C. It gets 135 mm of precipitation over about 9 rainy days. The sun is out about 27% of daylight hours. The May record high is 31°C (2019) and the record low is 8°C (1980). May is one of the most comfortable months to visit.

Isehara weather in June

In June, Isehara averages a high of 26°C and a low of 19°C. It gets 176 mm of precipitation over about 12 rainy days. The sun is out about 19% of daylight hours. The June record high is 36°C (2022) and the record low is 12°C (1989). June is one of the most comfortable months to visit.

Isehara weather in July

In July, Isehara averages a high of 29°C and a low of 23°C. It gets 162 mm of precipitation over about 11 rainy days. The sun is out about 26% of daylight hours. The July record high is 37°C (2023) and the record low is 13°C (1976).

Isehara weather in August

In August, Isehara averages a high of 31°C and a low of 24°C. It gets 119 mm of precipitation over about 7 rainy days. The sun is out about 36% of daylight hours. The August record high is 37°C (2025) and the record low is 17°C (1977).

Isehara weather in September

In September, Isehara averages a high of 27°C and a low of 21°C. It gets 228 mm of precipitation over about 11 rainy days. The sun is out about 29% of daylight hours. The September record high is 36°C (2000) and the record low is 13°C (2003).

Isehara weather in October

In October, Isehara averages a high of 22°C and a low of 15°C. It gets 208 mm of precipitation over about 10 rainy days. The sun is out about 39% of daylight hours. The October record high is 32°C (2018) and the record low is 6°C (1976). October is one of the most comfortable months to visit.

Isehara weather in November

In November, Isehara averages a high of 17°C and a low of 9°C. It gets 97 mm of precipitation over about 8 rainy days. The sun is out about 53% of daylight hours. The November record high is 27°C (2023) and the record low is 1°C (1976). November is one of the most comfortable months to visit.

Isehara weather in December

In December, Isehara averages a high of 13°C and a low of 5°C. It gets 59 mm of precipitation over about 6 rainy days. The sun is out about 65% of daylight hours. The December record high is 24°C (2023) and the record low is -3°C (1976).

Sunshine, humidity and wind in Isehara

December is the sunniest month in Isehara, with sunshine about 65% of daylight hours. June is the cloudiest, at 19%. Over the year the sun shines about 40% of daylight hours. Isehara is sunnier than 65% of Japan.

Humidity peaks in July at 82% and is lowest in February at 60%.

Isehara has about 20 days a year above 32°C. Isehara is cooler than 51% of Japan.

First and last freeze in Isehara

The first fall freeze in Isehara typically comes around December 21, and the last spring freeze around February 15. That leaves a frost-free growing season of about 309 days.

Isehara weather records

The hottest temperature on record at the Isehara station is 37°C, on August 11, 2013. The coldest is -5°C, on January 17, 1970.

The wettest day on record brought 261 mm of rain, on October 6, 2014.

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

The best time to visit Isehara

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

Winter (December–February) is chilly, with average highs around 11°C and lows near 3°C.

Spring (March–May) is mild, with average highs around 19°C and lows near 10°C.

Summer (June–August) is hot, with average highs around 29°C and lows near 22°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 22°C and lows near 15°C.

Isehara climate questions

How much rain does Isehara get?

Isehara gets 1555 mm of precipitation in an average year, over about 103 rainy days.

What is the wettest month in Isehara?

September is the wettest month in Isehara, with 228 mm. January is the driest, with 56 mm.

How many rainy days does Isehara have a year?

Isehara has about 103 days with measurable rain in an average year. June has the most, about 12.

What is the hottest month in Isehara?

August is the warmest month in Isehara, with an average high of 31°C.

What is the coldest month in Isehara?

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

What is the record high temperature in Isehara?

The record high at the Isehara station is 37°C, set on August 11, 2013. The record low is -5°C, on January 17, 1970.

What is the sunniest month in Isehara?

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

When is the first frost in Isehara?

The first fall freeze in Isehara typically comes around December 21. The last spring freeze is around February 15.

What is the best time to visit Isehara?

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