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Iizuka, Fukuoka Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Iizuka, Fukuoka?
Iizuka, Fukuoka gets 1589 mm of precipitation a year over about 102 rainy days. August is the warmest month (average high 32°C) and January the coldest (average low 1°C).
Humid subtropical climate
Iizuka, Fukuoka has hot summers and chilly winters. Daytime highs range from about 10°C in January to 32°C in August. July is usually the wettest month. The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 1° | 11° |
| Spring | Mar–May | 8° | 20° |
| Summer | Jun–Aug | 22° | 30° |
| Autumn | Sep–Nov | 13° | 23° |
How much rain does Iizuka get?
Iizuka gets 1589 mm of precipitation in an average year, spread over about 102 days with measurable rain. That is fewer rainy days than 70% of Japan.
July is the wettest month, with 306 mm. December is the driest, with 65 mm. July has the most rainy days, about 11.
The longest dry spell in the last five years lasted 35 days, to August 10, 2026.
From October 2025 to September 2026 Iizuka got 2763 mm of rain, against a normal of 1589 mm for those months. August 2026 had the most, with 1084 mm.
Iizuka weather by month
Iizuka weather in January
In January, Iizuka averages a high of 9°C and a low of 1°C. It gets 68 mm of precipitation over about 9 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The January record high is 19°C (2026) and the record low is -7°C (1976).
Iizuka weather in February
In February, Iizuka averages a high of 11°C and a low of 1°C. It gets 66 mm of precipitation over about 9 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The February record high is 24°C (2004) and the record low is -8°C (1977).
Iizuka weather in March
In March, Iizuka averages a high of 14°C and a low of 3°C. It gets 93 mm of precipitation over about 9 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The March record high is 26°C (2022) and the record low is -4°C (1977).
Iizuka weather in April
In April, Iizuka averages a high of 20°C and a low of 8°C. It gets 112 mm of precipitation over about 8 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The April record high is 31°C (2018) and the record low is -2°C (1972). April is one of the most comfortable months to visit.
Iizuka weather in May
In May, Iizuka averages a high of 25°C and a low of 13°C. It gets 132 mm of precipitation over about 7 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The May record high is 34°C (2000) and the record low is 3°C (1971). May is one of the most comfortable months to visit.
Iizuka weather in June
In June, Iizuka averages a high of 27°C and a low of 18°C. It gets 248 mm of precipitation over about 11 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The June record high is 36°C (2004) and the record low is 8°C (1978).
Iizuka weather in July
In July, Iizuka averages a high of 31°C and a low of 23°C. It gets 306 mm of precipitation over about 11 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The July record high is 37°C (1994) and the record low is 14°C (1982).
Iizuka weather in August
In August, Iizuka averages a high of 32°C and a low of 23°C. It gets 169 mm of precipitation over about 8 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The August record high is 38°C (2020) and the record low is 16°C (1972).
Iizuka weather in September
In September, Iizuka averages a high of 28°C and a low of 19°C. It gets 167 mm of precipitation over about 9 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The September record high is 36°C (2003) and the record low is 7°C (1987).
Iizuka weather in October
In October, Iizuka averages a high of 23°C and a low of 13°C. It gets 86 mm of precipitation over about 6 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The October record high is 33°C (2005) and the record low is 1°C (1986). October is one of the most comfortable months to visit.
Iizuka weather in November
In November, Iizuka averages a high of 18°C and a low of 7°C. It gets 76 mm of precipitation over about 7 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The November record high is 28°C (2023) and the record low is -2°C (1973). November is one of the most comfortable months to visit.
Iizuka weather in December
In December, Iizuka averages a high of 12°C and a low of 2°C. It gets 65 mm of precipitation over about 9 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The December record high is 26°C (2018) and the record low is -4°C (1971).
Sunshine, humidity and wind in Iizuka
October is the sunniest month in Iizuka, with estimated sunshine of 51% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 24%. The annual cloud-cover estimate is 38% of daylight hours; it is not a measurement of sunshine duration. Iizuka is cloudier than 53% of Japan.
Humidity peaks in July at 78% and is lowest in April at 64%.
Iizuka has about 32 days a year above 32°C. Iizuka is hotter than 86% of Japan.
First and last freeze in Iizuka
The first fall freeze in Iizuka typically comes around December 6, and the last spring freeze around March 19. That leaves a frost-free growing season of about 262 days.
Iizuka weather records
These records cover IIZUKA during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Iizuka station is 38°C, on August 20, 2020. The coldest is -8°C, on February 19, 1977.
The wettest day in the available station history brought 712 mm of precipitation, on July 1, 2026.
39 all-time records have been set at the station since 1970.
The best time to visit Iizuka
The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.
Winter (December–February) is chilly, with average highs around 11°C and lows near 1°C.
Spring (March–May) is mild, with average highs around 20°C and lows near 8°C.
Summer (June–August) is hot, with average highs around 30°C and lows near 22°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 23°C and lows near 13°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 1° | 9° | 68 mm | 9 | 68% | 36% | 19° | -7° |
| February | 1° | 11° | 66 mm | 9 | 66% | 37% | 24° | -8° |
| March | 3° | 14° | 93 mm | 9 | 66% | 37% | 26° | -4° |
| April | 8° | 20° | 112 mm | 8 | 64% | 40% | 31° | -2° |
| May | 13° | 25° | 132 mm | 7 | 69% | 35% | 34° | 3° |
| June | 18° | 27° | 248 mm | 11 | 76% | 24% | 36° | 8° |
| July | 23° | 31° | 306 mm | 11 | 78% | 26% | 37° | 14° |
| August | 23° | 32° | 169 mm | 8 | 73% | 41% | 38° | 16° |
| September | 19° | 28° | 167 mm | 9 | 75% | 39% | 36° | 7° |
| October | 13° | 23° | 86 mm | 6 | 68% | 51% | 33° | 1° |
| November | 7° | 18° | 76 mm | 7 | 68% | 49% | 28° | -2° |
| December | 2° | 12° | 65 mm | 9 | 65% | 41% | 26° | -4° |
Station: IIZUKA, 2 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Iizuka climate questions
How much rain does Iizuka get?
Iizuka gets 1589 mm of precipitation in an average year, over about 102 rainy days.
What is the wettest month in Iizuka?
July is the wettest month in Iizuka, with 306 mm. December is the driest, with 65 mm.
How many rainy days does Iizuka have a year?
Iizuka has about 102 days with measurable rain in an average year. July has the most, about 11.
What is the hottest month in Iizuka?
August is the warmest month in Iizuka, with an average high of 32°C.
What is the coldest month in Iizuka?
January is the coldest month in Iizuka, with an average low of 1°C.
What is the record high temperature in Iizuka?
Within the available 1970–2026 station history, the record high at the Iizuka station is 38°C, set on August 20, 2020. The record low is -8°C, on February 19, 1977.
What is the sunniest month in Iizuka?
October is the sunniest month in Iizuka, with estimated sunshine of 51% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Iizuka?
The first fall freeze in Iizuka typically comes around December 6. The last spring freeze is around March 19.
What is the best time to visit Iizuka?
The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 21°C.