Yachiyo, Chiba Weather by Month and Climate Averages

How much rain does Yachiyo get?

Yachiyo gets 1299 mm of precipitation in an average year, spread over about 98 days with measurable rain. That is fewer rainy days than 81% of Japan.

September is the wettest month, with 198 mm. December is the driest, with 51 mm. June has the most rainy days, about 11.

The longest dry spell in the last five years lasted 25 days, to February 5, 2022.

Yachiyo weather by month

Yachiyo weather in January

In January, Yachiyo averages a high of 10°C and a low of 2°C. It gets 59 mm of precipitation over about 5 rainy days. The sun is out about 57% of daylight hours. The January record high is 19°C (1989) and the record low is -5°C (1981).

Yachiyo weather in February

In February, Yachiyo averages a high of 11°C and a low of 2°C. It gets 55 mm of precipitation over about 6 rainy days. The sun is out about 56% of daylight hours. The February record high is 24°C (2009) and the record low is -4°C (1977).

Yachiyo weather in March

In March, Yachiyo averages a high of 14°C and a low of 5°C. It gets 97 mm of precipitation over about 9 rainy days. The sun is out about 42% of daylight hours. The March record high is 26°C (2013) and the record low is -4°C (1977).

Yachiyo weather in April

In April, Yachiyo averages a high of 19°C and a low of 10°C. It gets 101 mm of precipitation over about 9 rainy days. The sun is out about 39% of daylight hours. The April record high is 29°C (2004) and the record low is 1°C (2001). April is one of the most comfortable months to visit.

Yachiyo weather in May

In May, Yachiyo averages a high of 23°C and a low of 15°C. It gets 108 mm of precipitation over about 9 rainy days. The sun is out about 28% of daylight hours. The May record high is 32°C (2026) and the record low is 7°C (1993). May is one of the most comfortable months to visit.

Yachiyo weather in June

In June, Yachiyo averages a high of 26°C and a low of 19°C. It gets 141 mm of precipitation over about 11 rainy days. The sun is out about 22% of daylight hours. The June record high is 37°C (2022) and the record low is 11°C (1981). June is one of the most comfortable months to visit.

Yachiyo weather in July

In July, Yachiyo averages a high of 29°C and a low of 23°C. It gets 118 mm of precipitation over about 10 rainy days. The sun is out about 27% of daylight hours. The July record high is 38°C (2004) and the record low is 12°C (1976).

Yachiyo weather in August

In August, Yachiyo averages a high of 31°C and a low of 24°C. It gets 101 mm of precipitation over about 8 rainy days. The sun is out about 40% of daylight hours. The August record high is 38°C (2015) and the record low is 17°C (1980).

Yachiyo weather in September

In September, Yachiyo averages a high of 28°C and a low of 21°C. It gets 198 mm of precipitation over about 10 rainy days. The sun is out about 32% of daylight hours. The September record high is 36°C (2010) and the record low is 13°C (2003).

Yachiyo weather in October

In October, Yachiyo averages a high of 22°C and a low of 15°C. It gets 187 mm of precipitation over about 9 rainy days. The sun is out about 40% of daylight hours. The October record high is 33°C (2016) and the record low is 6°C (1983). October is one of the most comfortable months to visit.

Yachiyo weather in November

In November, Yachiyo averages a high of 17°C and a low of 9°C. It gets 83 mm of precipitation over about 7 rainy days. The sun is out about 54% of daylight hours. The November record high is 28°C (2023) and the record low is 0°C (1971). November is one of the most comfortable months to visit.

Yachiyo weather in December

In December, Yachiyo averages a high of 13°C and a low of 4°C. It gets 51 mm of precipitation over about 6 rainy days. The sun is out about 62% of daylight hours. The December record high is 24°C (2023) and the record low is -3°C (1984).

Sunshine, humidity and wind in Yachiyo

December is the sunniest month in Yachiyo, with sunshine about 62% of daylight hours. June is the cloudiest, at 22%. Over the year the sun shines about 42% of daylight hours. Yachiyo is sunnier than 76% of Japan.

Humidity peaks in July at 80% and is lowest in February at 62%.

Yachiyo has about 18 days a year above 32°C. Yachiyo is cooler than 55% of Japan.

First and last freeze in Yachiyo

The first fall freeze in Yachiyo typically comes around December 18, and the last spring freeze around February 18. That leaves a frost-free growing season of about 303 days.

Yachiyo weather records

The hottest temperature on record at the Yachiyo station is 38°C, on August 7, 2015. The coldest is -5°C, on January 17, 1970.

The wettest day on record brought 260 mm of rain, on September 22, 1996.

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

The best time to visit Yachiyo

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.

Yachiyo climate questions

How much rain does Yachiyo get?

Yachiyo gets 1299 mm of precipitation in an average year, over about 98 rainy days.

What is the wettest month in Yachiyo?

September is the wettest month in Yachiyo, with 198 mm. December is the driest, with 51 mm.

How many rainy days does Yachiyo have a year?

Yachiyo has about 98 days with measurable rain in an average year. June has the most, about 11.

What is the hottest month in Yachiyo?

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

What is the coldest month in Yachiyo?

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

What is the record high temperature in Yachiyo?

The record high at the Yachiyo station is 38°C, set on August 7, 2015. The record low is -5°C, on January 17, 1970.

What is the sunniest month in Yachiyo?

December is the sunniest month in Yachiyo, with sunshine about 62% of daylight hours. June is the cloudiest.

When is the first frost in Yachiyo?

The first fall freeze in Yachiyo typically comes around December 18. The last spring freeze is around February 18.

What is the best time to visit Yachiyo?

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