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Ueda, Nagano Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Ueda, Nagano?
Ueda, Nagano gets 1132 mm of precipitation a year over about 105 rainy days. August is the warmest month (average high 27°C) and January the coldest (average low -9°C).
Humid continental climate
Ueda, Nagano has warm summers and cold winters. Daytime highs range from about 2°C in January to 27°C in August. September is usually the wettest month. The most comfortable time to visit is typically May to August, when daytime highs sit near 23°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -8° | 4° |
| Spring | Mar–May | 0° | 14° |
| Summer | Jun–Aug | 15° | 24° |
| Autumn | Sep–Nov | 6° | 17° |
How much rain does Ueda get?
Ueda gets 1132 mm of precipitation in an average year, spread over about 105 days with measurable rain. That is fewer rainy days than 62% of Japan.
September is the wettest month, with 175 mm. January is the driest, with 30 mm. July has the most rainy days, about 14.
The longest dry spell in the last five years lasted 23 days, to February 5, 2022.
From October 2025 to September 2026 Ueda got 2693 mm of rain, against a normal of 1132 mm for those months. September 2026 had the most, with 1715 mm.
Ueda weather by month
Ueda weather in January
In January, Ueda averages a high of 2°C and a low of -9°C. It gets 30 mm of precipitation over about 6 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The January record high is 16°C (1972) and the record low is -19°C (1977).
Ueda weather in February
In February, Ueda averages a high of 4°C and a low of -8°C. It gets 35 mm of precipitation over about 6 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The February record high is 19°C (1996) and the record low is -19°C (1984).
Ueda weather in March
In March, Ueda averages a high of 8°C and a low of -6°C. It gets 61 mm of precipitation over about 8 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The March record high is 22°C (2010) and the record low is -17°C (1977).
Ueda weather in April
In April, Ueda averages a high of 14°C and a low of 0°C. It gets 80 mm of precipitation over about 9 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The April record high is 28°C (2004) and the record low is -12°C (1987).
Ueda weather in May
In May, Ueda averages a high of 20°C and a low of 6°C. It gets 102 mm of precipitation over about 9 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The May record high is 29°C (2009) and the record low is -5°C (1972). May is one of the most comfortable months to visit.
Ueda weather in June
In June, Ueda averages a high of 22°C and a low of 12°C. It gets 146 mm of precipitation over about 12 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The June record high is 32°C (2022) and the record low is -1°C (1981). June is one of the most comfortable months to visit.
Ueda weather in July
In July, Ueda averages a high of 26°C and a low of 16°C. It gets 170 mm of precipitation over about 14 rainy days. Estimated sunshine is 24% of daylight hours, derived from ERA5 cloud cover. The July record high is 33°C (2000) and the record low is 5°C (1976). July is one of the most comfortable months to visit.
Ueda weather in August
In August, Ueda averages a high of 27°C and a low of 17°C. It gets 119 mm of precipitation over about 10 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The August record high is 33°C (2013) and the record low is 7°C (1981). August is one of the most comfortable months to visit.
Ueda weather in September
In September, Ueda averages a high of 22°C and a low of 13°C. It gets 175 mm of precipitation over about 11 rainy days. Estimated sunshine is 29% of daylight hours, derived from ERA5 cloud cover. The September record high is 31°C (2023) and the record low is 2°C (1984).
Ueda weather in October
In October, Ueda averages a high of 17°C and a low of 6°C. It gets 136 mm of precipitation over about 8 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The October record high is 26°C (2014) and the record low is -6°C (1983).
Ueda weather in November
In November, Ueda averages a high of 11°C and a low of -1°C. It gets 48 mm of precipitation over about 6 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The November record high is 23°C (2023) and the record low is -11°C (1983).
Ueda weather in December
In December, Ueda averages a high of 6°C and a low of -6°C. It gets 30 mm of precipitation over about 6 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The December record high is 21°C (2018) and the record low is -18°C (1978).
Sunshine, humidity and wind in Ueda
November is the sunniest month in Ueda, with estimated sunshine of 45% of daylight hours from ERA5 cloud cover. July is the cloudiest, at 24%. The annual cloud-cover estimate is 35% of daylight hours; it is not a measurement of sunshine duration. Ueda is cloudier than 77% of Japan.
Humidity peaks in July at 76% and is lowest in April at 56%.
First and last freeze in Ueda
The first fall freeze in Ueda typically comes around October 24, and the last spring freeze around May 8. That leaves a frost-free growing season of about 169 days.
Ueda weather records
These records cover KARUIZAWA during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Ueda station is 33°C, on August 11, 2013. The coldest is -19°C, on February 5, 1984.
The wettest day in the available station history brought 343 mm of precipitation, on September 28, 2026.
46 all-time records have been set at the station since 1970.
The best time to visit Ueda
The most comfortable time to visit is typically May to August, when daytime highs sit near 23°C.
Winter (December–February) is cold, with average highs around 4°C and lows near -8°C.
Spring (March–May) is mild, with average highs around 14°C and lows near 0°C.
Summer (June–August) is warm, with average highs around 25°C and lows near 15°C. It can feel humid.
Autumn (September–November) is mild, with average highs around 17°C and lows near 6°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -9° | 2° | 30 mm | 6 | 63% | 37% | 16° | -19° |
| February | -8° | 4° | 35 mm | 6 | 59% | 38% | 19° | -19° |
| March | -6° | 8° | 61 mm | 8 | 59% | 40% | 22° | -17° |
| April | 0° | 14° | 80 mm | 9 | 56% | 40% | 28° | -12° |
| May | 6° | 20° | 102 mm | 9 | 58% | 33% | 29° | -5° |
| June | 12° | 22° | 146 mm | 12 | 67% | 25% | 32° | -1° |
| July | 16° | 26° | 170 mm | 14 | 76% | 24% | 33° | 5° |
| August | 17° | 27° | 119 mm | 10 | 73% | 32% | 33° | 7° |
| September | 13° | 22° | 175 mm | 11 | 75% | 29% | 31° | 2° |
| October | 6° | 17° | 136 mm | 8 | 75% | 36% | 26° | -6° |
| November | -1° | 11° | 48 mm | 6 | 70% | 45% | 23° | -11° |
| December | -6° | 6° | 30 mm | 6 | 64% | 41% | 21° | -18° |
Station: KARUIZAWA, 25 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.
Ueda climate questions
How much rain does Ueda get?
Ueda gets 1132 mm of precipitation in an average year, over about 105 rainy days.
What is the wettest month in Ueda?
September is the wettest month in Ueda, with 175 mm. January is the driest, with 30 mm.
How many rainy days does Ueda have a year?
Ueda has about 105 days with measurable rain in an average year. July has the most, about 14.
What is the hottest month in Ueda?
August is the warmest month in Ueda, with an average high of 27°C.
What is the coldest month in Ueda?
January is the coldest month in Ueda, with an average low of -9°C.
What is the record high temperature in Ueda?
Within the available 1970–2026 station history, the record high at the Ueda station is 33°C, set on August 11, 2013. The record low is -19°C, on February 5, 1984.
What is the sunniest month in Ueda?
November is the sunniest month in Ueda, with estimated sunshine of 45% of daylight hours from ERA5 cloud cover. July is the cloudiest.
When is the first frost in Ueda?
The first fall freeze in Ueda typically comes around October 24. The last spring freeze is around May 8.
What is the best time to visit Ueda?
The most comfortable time to visit is typically May to August, when daytime highs sit near 23°C.