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Numazu, Shizuoka Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Numazu, Shizuoka?
Numazu, Shizuoka gets 1566 mm of precipitation a year over about 90 rainy days. August is the warmest month (average high 32°C) and January the coldest (average low 0°C).
Humid subtropical climate
Numazu, Shizuoka has hot summers and chilly winters. Daytime highs range from about 11°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 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 1° | 13° |
| Spring | Mar–May | 9° | 20° |
| Summer | Jun–Aug | 21° | 29° |
| Autumn | Sep–Nov | 14° | 24° |
How much rain does Numazu get?
Numazu gets 1566 mm of precipitation in an average year, spread over about 90 days with measurable rain. That is fewer rainy days than 92% of Japan.
July is the wettest month, with 202 mm. December is the driest, with 57 mm. July has the most rainy days, about 10.
The longest dry spell in the last five years lasted 22 days, to January 13, 2023.
From October 2025 to September 2026 Numazu got 2447 mm of rain, against a normal of 1566 mm for those months. September 2026 had the most, with 1138 mm.
Numazu weather by month
Numazu weather in January
In January, Numazu averages a high of 12°C and a low of 0°C. It gets 62 mm of precipitation over about 4 rainy days. Estimated sunshine is 61% of daylight hours, derived from ERA5 cloud cover. The January record high is 21°C (2000) and the record low is -8°C (1970).
Numazu weather in February
In February, Numazu averages a high of 12°C and a low of 1°C. It gets 80 mm of precipitation over about 5 rainy days. Estimated sunshine is 53% of daylight hours, derived from ERA5 cloud cover. The February record high is 25°C (2009) and the record low is -8°C (1984).
Numazu weather in March
In March, Numazu averages a high of 16°C and a low of 4°C. It gets 122 mm of precipitation over about 8 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The March record high is 27°C (2013) and the record low is -8°C (1971).
Numazu weather in April
In April, Numazu averages a high of 20°C and a low of 9°C. It gets 132 mm of precipitation over about 8 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The April record high is 29°C (2007) and the record low is -2°C (1972). April is one of the most comfortable months to visit.
Numazu weather in May
In May, Numazu averages a high of 24°C and a low of 13°C. It gets 127 mm of precipitation over about 8 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The May record high is 32°C (2019) and the record low is 5°C (1999). May is one of the most comfortable months to visit.
Numazu weather in June
In June, Numazu averages a high of 27°C and a low of 18°C. It gets 180 mm of precipitation over about 9 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The June record high is 36°C (2011) and the record low is 9°C (2004).
Numazu weather in July
In July, Numazu averages a high of 31°C and a low of 22°C. It gets 202 mm of precipitation over about 10 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The July record high is 37°C (2024) and the record low is 12°C (1976).
Numazu weather in August
In August, Numazu averages a high of 32°C and a low of 23°C. It gets 151 mm of precipitation over about 8 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The August record high is 37°C (2016) and the record low is 16°C (2018).
Numazu weather in September
In September, Numazu averages a high of 29°C and a low of 19°C. It gets 198 mm of precipitation over about 9 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The September record high is 36°C (2010) and the record low is 11°C (1996).
Numazu weather in October
In October, Numazu averages a high of 24°C and a low of 13°C. It gets 168 mm of precipitation over about 8 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The October record high is 33°C (2019) and the record low is 3°C (1986). October is one of the most comfortable months to visit.
Numazu weather in November
In November, Numazu averages a high of 19°C and a low of 8°C. It gets 89 mm of precipitation over about 7 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The November record high is 28°C (2000) and the record low is -2°C (1973). November is one of the most comfortable months to visit.
Numazu weather in December
In December, Numazu averages a high of 14°C and a low of 2°C. It gets 57 mm of precipitation over about 5 rainy days. Estimated sunshine is 70% of daylight hours, derived from ERA5 cloud cover. The December record high is 24°C (2015) and the record low is -8°C (1973).
Sunshine, humidity and wind in Numazu
December is the sunniest month in Numazu, with estimated sunshine of 70% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 21%. The annual cloud-cover estimate is 43% of daylight hours; it is not a measurement of sunshine duration. Numazu is sunnier than 94% of Japan.
Humidity peaks in July at 88% and is lowest in January at 62%.
Numazu has about 24 days a year above 32°C. Numazu is hotter than 65% of Japan.
First and last freeze in Numazu
The first fall freeze in Numazu typically comes around December 12, and the last spring freeze around March 17. That leaves a frost-free growing season of about 270 days.
Numazu weather records
These records cover MISHIMA during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Numazu station is 37°C, on August 9, 2016. The coldest is -8°C, on January 18, 1970.
The wettest day in the available station history brought 413 mm of precipitation, on August 7, 2026.
39 all-time records have been set at the station since 1970.
The best time to visit Numazu
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 13°C and lows near 1°C.
Spring (March–May) is mild, with average highs around 20°C and lows near 9°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 14°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 0° | 12° | 62 mm | 4 | 62% | 61% | 21° | -8° |
| February | 1° | 12° | 80 mm | 5 | 63% | 53% | 25° | -8° |
| March | 4° | 16° | 122 mm | 8 | 70% | 44% | 27° | -8° |
| April | 9° | 20° | 132 mm | 8 | 74% | 39% | 29° | -2° |
| May | 13° | 24° | 127 mm | 8 | 80% | 30% | 32° | 5° |
| June | 18° | 27° | 180 mm | 9 | 85% | 21% | 36° | 9° |
| July | 22° | 31° | 202 mm | 10 | 88% | 27% | 37° | 12° |
| August | 23° | 32° | 151 mm | 8 | 85% | 39% | 37° | 16° |
| September | 19° | 29° | 198 mm | 9 | 80% | 37% | 36° | 11° |
| October | 13° | 24° | 168 mm | 8 | 72% | 44% | 33° | 3° |
| November | 8° | 19° | 89 mm | 7 | 70% | 56% | 28° | -2° |
| December | 2° | 14° | 57 mm | 5 | 62% | 70% | 24° | -8° |
Station: MISHIMA, 6 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.
Numazu climate questions
How much rain does Numazu get?
Numazu gets 1566 mm of precipitation in an average year, over about 90 rainy days.
What is the wettest month in Numazu?
July is the wettest month in Numazu, with 202 mm. December is the driest, with 57 mm.
How many rainy days does Numazu have a year?
Numazu has about 90 days with measurable rain in an average year. July has the most, about 10.
What is the hottest month in Numazu?
August is the warmest month in Numazu, with an average high of 32°C.
What is the coldest month in Numazu?
January is the coldest month in Numazu, with an average low of 0°C.
What is the record high temperature in Numazu?
Within the available 1970–2026 station history, the record high at the Numazu station is 37°C, set on August 9, 2016. The record low is -8°C, on January 18, 1970.
What is the sunniest month in Numazu?
December is the sunniest month in Numazu, with estimated sunshine of 70% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Numazu?
The first fall freeze in Numazu typically comes around December 12. The last spring freeze is around March 17.
What is the best time to visit Numazu?
The most comfortable time to visit is typically April to May and October to November, when daytime highs sit near 22°C.