Honmachi, Kumamoto Weather by Month and Climate Averages

How much rain does Honmachi get?

Honmachi gets 2260 mm of precipitation in an average year, spread over about 109 days with measurable rain. That is fewer rainy days than 54% of Japan.

June is the wettest month, with 518 mm. January is the driest, with 66 mm. June has the most rainy days, about 14.

The longest dry spell in the last five years lasted 15 days, to December 17, 2024.

Honmachi weather by month

Honmachi weather in January

In January, Honmachi averages a high of 11°C and a low of -1°C. It gets 66 mm of precipitation over about 7 rainy days. The sun is out about 42% of daylight hours. The January record high is 21°C (2002) and the record low is -10°C (2016).

Honmachi weather in February

In February, Honmachi averages a high of 13°C and a low of 0°C. It gets 105 mm of precipitation over about 9 rainy days. The sun is out about 39% of daylight hours. The February record high is 24°C (1979) and the record low is -9°C (2012).

Honmachi weather in March

In March, Honmachi averages a high of 16°C and a low of 3°C. It gets 133 mm of precipitation over about 9 rainy days. The sun is out about 37% of daylight hours. The March record high is 27°C (2013) and the record low is -6°C (1984).

Honmachi weather in April

In April, Honmachi averages a high of 21°C and a low of 8°C. It gets 152 mm of precipitation over about 9 rainy days. The sun is out about 35% of daylight hours. The April record high is 31°C (2004) and the record low is -3°C (1972). April is one of the most comfortable months to visit.

Honmachi weather in May

In May, Honmachi averages a high of 26°C and a low of 13°C. It gets 184 mm of precipitation over about 8 rainy days. The sun is out about 29% of daylight hours. The May record high is 34°C (2019) and the record low is 3°C (1981). May is one of the most comfortable months to visit.

Honmachi weather in June

In June, Honmachi averages a high of 28°C and a low of 18°C. It gets 518 mm of precipitation over about 14 rainy days. The sun is out about 18% of daylight hours. The June record high is 36°C (2022) and the record low is 9°C (1981).

Honmachi weather in July

In July, Honmachi averages a high of 31°C and a low of 22°C. It gets 454 mm of precipitation over about 13 rainy days. The sun is out about 24% of daylight hours. The July record high is 38°C (2026) and the record low is 15°C (1982).

Honmachi weather in August

In August, Honmachi averages a high of 32°C and a low of 22°C. It gets 182 mm of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The August record high is 39°C (2026) and the record low is 16°C (2002).

Honmachi weather in September

In September, Honmachi averages a high of 29°C and a low of 19°C. It gets 205 mm of precipitation over about 10 rainy days. The sun is out about 38% of daylight hours. The September record high is 36°C (2024) and the record low is 8°C (1987).

Honmachi weather in October

In October, Honmachi averages a high of 24°C and a low of 13°C. It gets 101 mm of precipitation over about 6 rainy days. The sun is out about 53% of daylight hours. The October record high is 33°C (2016) and the record low is -1°C (1970). October is one of the most comfortable months to visit.

Honmachi weather in November

In November, Honmachi averages a high of 18°C and a low of 7°C. It gets 89 mm of precipitation over about 8 rainy days. The sun is out about 48% of daylight hours. The November record high is 27°C (2023) and the record low is -4°C (1973). November is one of the most comfortable months to visit.

Honmachi weather in December

In December, Honmachi averages a high of 12°C and a low of 1°C. It gets 72 mm of precipitation over about 7 rainy days. The sun is out about 46% of daylight hours. The December record high is 23°C (2018) and the record low is -8°C (1973).

Sunshine, humidity and wind in Honmachi

October is the sunniest month in Honmachi, with sunshine about 53% of daylight hours. June is the cloudiest, at 18%. Over the year the sun shines about 37% of daylight hours. Honmachi is cloudier than 58% of Japan.

Humidity peaks in July at 82% and is lowest in April at 70%.

Honmachi has about 33 days a year above 32°C. Honmachi is hotter than 87% of Japan.

First and last freeze in Honmachi

The first fall freeze in Honmachi typically comes around November 30, and the last spring freeze around March 26. That leaves a frost-free growing season of about 249 days.

Honmachi weather records

The hottest temperature on record at the Honmachi station is 39°C, on August 2, 2026. The coldest is -10°C, on January 25, 2016.

The wettest day on record brought 328 mm of rain, on July 22, 2006.

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

The best time to visit Honmachi

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

Winter (December–February) is chilly, with average highs around 12°C and lows near 0°C.

Spring (March–May) is warm, with average highs around 21°C and lows near 8°C.

Summer (June–August) is hot, with average highs around 30°C and lows near 21°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 24°C and lows near 13°C.

Honmachi climate questions

How much rain does Honmachi get?

Honmachi gets 2260 mm of precipitation in an average year, over about 109 rainy days.

What is the wettest month in Honmachi?

June is the wettest month in Honmachi, with 518 mm. January is the driest, with 66 mm.

How many rainy days does Honmachi have a year?

Honmachi has about 109 days with measurable rain in an average year. June has the most, about 14.

What is the hottest month in Honmachi?

August is the warmest month in Honmachi, with an average high of 32°C.

What is the coldest month in Honmachi?

January is the coldest month in Honmachi, with an average low of -1°C.

What is the record high temperature in Honmachi?

The record high at the Honmachi station is 39°C, set on August 2, 2026. The record low is -10°C, on January 25, 2016.

What is the sunniest month in Honmachi?

October is the sunniest month in Honmachi, with sunshine about 53% of daylight hours. June is the cloudiest.

When is the first frost in Honmachi?

The first fall freeze in Honmachi typically comes around November 30. The last spring freeze is around March 26.

What is the best time to visit Honmachi?

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