Sanjo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sanjo.
Climate overview of Sanjo
Sanjo, Niigata Prefecture, Japan, experiences significant temperature variation throughout the year. Summers bring daytime highs of 31°C (88°F) in August, while winters cool to 6°C (43°F) in January.
With around 1918 mm (76 in) of annual rain/snowfall, Sanjo has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has very warm summers and cold winters. The wettest month is July. Sunshine peaks in August, when the city sees around 6.4 hours of sunshine per day.
Sanjo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sanjo - and find the best time to visit.
Monthly Temperature in Sanjo
Depending on the time of the year, temperatures range from very warm to chilly in Sanjo. Average daytime temperatures reach a very warm 31°C (88°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 6°C (43°F).
At night, temperatures range from around 23°C (73°F) in August to -1°C (30°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sanjo
Sanjo has a relatively rain/snowy climate with high precipitation levels, averaging 1918 mm (76 in) of rain/snowfall annually. Sanjo experiences moderate seasonal variation in rainfall, with monthly averages ranging from 229 mm (9 in) in July, the wettest month, and 108 mm (4.3 in) in May, the driest month. For more details, please visit our Sanjo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sanjo
Sanjo can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 6.4 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 1.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Sanjo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, September and October
- Warmest weather: August
- Most sunshine: May and August
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Sanjo
What is the best time to visit Sanjo?
May, June, September and October typically offer the most optimal weather in Sanjo. In contrast, January, February, March, July and December tend to have less optimal conditions. Sanjo has very warm summers and cold winters.
What temperatures can I expect in Sanjo?
Daytime highs range from 6°C (43°F) in January to 31°C (88°F) in August. Nighttime lows range from -1°C (30°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Sanjo get?
Annual rainfall is around 1918 mm (76 in). July is the wettest month with 229 mm (9 in), while May is the driest with 108 mm (4.3 in).
How sunny is Sanjo?
Sanjo receives around 1,468 hours of sunshine per year. August is the sunniest month with 193 hours, while January is the cloudiest with just 49 hours.
Sanjo 3-Day Forecast
Sanjo on the map
Sanjo is highlighted - select any city to see its climate.
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