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Hadano, Kanagawa Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Hadano, Kanagawa?
Hadano, Kanagawa gets 1715 mm of precipitation a year over about 94 rainy days. August is the warmest month (average high 31°C) and January the coldest (average low 3°C).
Humid subtropical climate
Hadano, Kanagawa has hot summers and chilly winters. Daytime highs range from about 11°C in January to 31°C in August. July 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 21°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 4° | 12° |
| Spring | Mar–May | 11° | 19° |
| Summer | Jun–Aug | 22° | 28° |
| Autumn | Sep–Nov | 16° | 22° |
How much rain does Hadano get?
Hadano gets 1715 mm of precipitation in an average year, spread over about 94 days with measurable rain. That is fewer rainy days than 87% of Japan.
July is the wettest month, with 219 mm. December is the driest, with 65 mm. July has the most rainy days, about 10.
The longest dry spell in the last five years lasted 28 days, to September 2, 2026.
From October 2025 to September 2026 Hadano got 2103 mm of rain, against a normal of 1715 mm for those months. July 2026 had the most, with 1055 mm.
Hadano weather by month
Hadano weather in January
In January, Hadano averages a high of 11°C and a low of 3°C. It gets 65 mm of precipitation over about 5 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The January record high is 21°C (1988) and the record low is -2°C (1970).
Hadano weather in February
In February, Hadano averages a high of 11°C and a low of 3°C. It gets 73 mm of precipitation over about 6 rainy days. Estimated sunshine is 51% of daylight hours, derived from ERA5 cloud cover. The February record high is 26°C (2009) and the record low is -4°C (1984).
Hadano weather in March
In March, Hadano averages a high of 14°C and a low of 6°C. It gets 128 mm of precipitation over about 9 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The March record high is 26°C (2013) and the record low is -2°C (1977).
Hadano weather in April
In April, Hadano averages a high of 19°C and a low of 11°C. It gets 149 mm of precipitation over about 9 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The April record high is 28°C (2004) and the record low is 2°C (2001). April is one of the most comfortable months to visit.
Hadano weather in May
In May, Hadano averages a high of 23°C and a low of 15°C. It gets 140 mm of precipitation over about 8 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The May record high is 32°C (2011) and the record low is 8°C (1980). May is one of the most comfortable months to visit.
Hadano weather in June
In June, Hadano averages a high of 26°C and a low of 19°C. It gets 213 mm of precipitation over about 10 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The June record high is 35°C (2011) and the record low is 12°C (2011). June is one of the most comfortable months to visit.
Hadano weather in July
In July, Hadano averages a high of 29°C and a low of 23°C. It gets 219 mm of precipitation over about 10 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The July record high is 36°C (2024) and the record low is 13°C (1976).
Hadano weather in August
In August, Hadano averages a high of 31°C and a low of 24°C. It gets 170 mm of precipitation over about 7 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The August record high is 37°C (2025) and the record low is 18°C (1980).
Hadano weather in September
In September, Hadano averages a high of 27°C and a low of 21°C. It gets 212 mm of precipitation over about 10 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The September record high is 37°C (2010) and the record low is 14°C (1980).
Hadano weather in October
In October, Hadano averages a high of 22°C and a low of 16°C. It gets 199 mm of precipitation over about 9 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The October record high is 32°C (2023) and the record low is 8°C (1976). October is one of the most comfortable months to visit.
Hadano weather in November
In November, Hadano averages a high of 17°C and a low of 11°C. It gets 83 mm of precipitation over about 7 rainy days. Estimated sunshine is 52% of daylight hours, derived from ERA5 cloud cover. The November record high is 27°C (1977) and the record low is 3°C (1970). November is one of the most comfortable months to visit.
Hadano weather in December
In December, Hadano averages a high of 13°C and a low of 6°C. It gets 65 mm of precipitation over about 5 rainy days. Estimated sunshine is 64% of daylight hours, derived from ERA5 cloud cover. The December record high is 24°C (2023) and the record low is -1°C (1995).
Sunshine, humidity and wind in Hadano
December is the sunniest month in Hadano, with estimated sunshine of 64% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 20%. The annual cloud-cover estimate is 41% of daylight hours; it is not a measurement of sunshine duration. Hadano is sunnier than 67% of Japan.
Humidity peaks in July at 87% and is lowest in January at 63%.
Hadano has about 15 days a year above 32°C. Hadano is cooler than 61% of Japan.
Hadano weather records
These records cover AJIRO during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Hadano station is 37°C, on August 6, 2025. The coldest is -4°C, on February 4, 1984.
The wettest day in the available station history brought 495 mm of precipitation, on July 1, 2026.
41 all-time records have been set at the station since 1970.
The best time to visit Hadano
The most comfortable time to visit is typically April to June and October to November, when daytime highs sit near 21°C.
Winter (December–February) is chilly, with average highs around 12°C and lows near 4°C.
Spring (March–May) is mild, with average highs around 19°C and lows near 11°C.
Summer (June–August) is hot, with average highs around 28°C and lows near 22°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 22°C and lows near 16°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 3° | 11° | 65 mm | 5 | 63% | 56% | 21° | -2° |
| February | 3° | 11° | 73 mm | 6 | 64% | 51% | 26° | -4° |
| March | 6° | 14° | 128 mm | 9 | 71% | 39% | 26° | -2° |
| April | 11° | 19° | 149 mm | 9 | 74% | 37% | 28° | 2° |
| May | 15° | 23° | 140 mm | 8 | 80% | 27% | 32° | 8° |
| June | 19° | 26° | 213 mm | 10 | 84% | 20% | 35° | 12° |
| July | 23° | 29° | 219 mm | 10 | 87% | 28% | 36° | 13° |
| August | 24° | 31° | 170 mm | 7 | 85% | 40% | 37° | 18° |
| September | 21° | 27° | 212 mm | 10 | 82% | 33% | 37° | 14° |
| October | 16° | 22° | 199 mm | 9 | 75% | 39% | 32° | 8° |
| November | 11° | 17° | 83 mm | 7 | 71% | 52% | 27° | 3° |
| December | 6° | 13° | 65 mm | 5 | 64% | 64% | 24° | -1° |
Station: AJIRO, 37 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.
Hadano climate questions
How much rain does Hadano get?
Hadano gets 1715 mm of precipitation in an average year, over about 94 rainy days.
What is the wettest month in Hadano?
July is the wettest month in Hadano, with 219 mm. December is the driest, with 65 mm.
How many rainy days does Hadano have a year?
Hadano has about 94 days with measurable rain in an average year. July has the most, about 10.
What is the hottest month in Hadano?
August is the warmest month in Hadano, with an average high of 31°C.
What is the coldest month in Hadano?
January is the coldest month in Hadano, with an average low of 3°C.
What is the record high temperature in Hadano?
Within the available 1970–2026 station history, the record high at the Hadano station is 37°C, set on August 6, 2025. The record low is -4°C, on February 4, 1984.
What is the sunniest month in Hadano?
December is the sunniest month in Hadano, with estimated sunshine of 64% of daylight hours from ERA5 cloud cover. June is the cloudiest.
What is the best time to visit Hadano?
The most comfortable time to visit is typically April to June and October to November, when daytime highs sit near 21°C.