Yamato, Kanagawa Weather by Month and Climate Averages

Yamato, Kanagawa gets 1555 mm of precipitation a year over about 103 rainy days. August is the warmest month (average high 31°C) and January the coldest (average low 2°C).

Yamato climate at a glance

Humid subtropical climate

Yamato, Kanagawa has hot summers and chilly winters. Daytime highs range from about 10°C in January to 31°C in August. September is usually the wettest month. The most comfortable time to visit is typically April to June and October to November, when daytime highs sit near 22°C.

How much rain does Yamato get?

Yamato 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.

Yamato weather by month

Yamato weather in January

In January, Yamato 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).

Yamato weather in February

In February, Yamato 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 55% of daylight hours. The February record high is 25°C (2009) and the record low is -5°C (1984).

Yamato weather in March

In March, Yamato 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 42% of daylight hours. The March record high is 25°C (2025) and the record low is -4°C (1971).

Yamato weather in April

In April, Yamato 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 38% 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.

Yamato weather in May

In May, Yamato 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 29% 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.

Yamato weather in June

In June, Yamato 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 21% 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.

Yamato weather in July

In July, Yamato 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 28% of daylight hours. The July record high is 37°C (2023) and the record low is 13°C (1976).

Yamato weather in August

In August, Yamato 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 40% of daylight hours. The August record high is 37°C (2025) and the record low is 17°C (1977).

Yamato weather in September

In September, Yamato 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 32% of daylight hours. The September record high is 36°C (2000) and the record low is 13°C (2003).

Yamato weather in October

In October, Yamato 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 41% 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.

Yamato weather in November

In November, Yamato 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 55% 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.

Yamato weather in December

In December, Yamato 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 Yamato

December is the sunniest month in Yamato, with sunshine about 65% of daylight hours. June is the cloudiest, at 21%. Over the year the sun shines about 42% of daylight hours. Yamato is sunnier than 81% of Japan.

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

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

First and last freeze in Yamato

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

Yamato weather records

The hottest temperature on record at the Yamato 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 Yamato

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.

Monthly climate

MonthPrecipRain daysHumiditySunshineSea tempRecord highRecord low
January56 mm561%58%-9°19°-5°
February57 mm660%55%-10°25°-5°
March125 mm1066%42%-9°25°-4°
April133 mm969%38%-9°28°
May135 mm975%29%-8°31°
June176 mm1280%21%-6°36°12°
July162 mm1182%28%-4°37°13°
August119 mm781%40%-3°37°17°
September228 mm1180%32%-3°36°13°
October208 mm1074%41%-5°32°
November97 mm869%55%-7°27°
December59 mm663%65%-8°24°-3°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Yamato climate questions

How much rain does Yamato get?

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

What is the wettest month in Yamato?

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

How many rainy days does Yamato have a year?

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

What is the hottest month in Yamato?

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

What is the coldest month in Yamato?

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

What is the record high temperature in Yamato?

The record high at the Yamato 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 Yamato?

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

When is the first frost in Yamato?

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

What is the best time to visit Yamato?

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

Source: NOAA GHCN-Daily station YOKOHAMA (19 km away).

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Normals from NOAA GHCN-Daily station YOKOHAMA.