Agano Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Agano.
Climate overview of Agano
Agano, Niigata Prefecture, Japan, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in August, while winters cool to 5°C (41°F) in January.
With around 2261 mm (89 in) of annual rain/snowfall, Agano has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has a distinct rainy season from June to January, with very warm summers and cold winters. The wettest month is July. Sunshine peaks in August, when the city sees around 7.0 hours of sunshine per day.
Agano Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Agano - and find the best time to visit.
Monthly Temperature in Agano
Depending on the time of the year, temperatures range from very warm to chilly in Agano. Average daytime temperatures reach a very warm 30°C (86°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 5°C (41°F).
At night, temperatures range from around 22°C (72°F) in August to -2°C (28°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Agano
Agano has a relatively rain/snowy climate with high precipitation levels, averaging 2261 mm (89 in) of rain/snowfall annually. Agano can be quite wet during July, receiving approximately 300 mm (12 in) of precipitation over 19 rainy days.
In contrast, during the driest month (April), you will experience much drier conditions, with 134 mm (5.3 in) of precipitation spread across 18 rainy days. For more details, please visit our Agano 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 Agano
Agano can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 7.0 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 1.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Agano by Month
The relative humidity is high throughout the year in Agano.
The city experiences its highest humidity in July, reaching 78%. In April, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Agano
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and October
- Warmest weather: July and August
- Most sunshine: May and August
- Seasonal pattern: A distinct rainy season from June to January, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Agano
What is the best time to visit Agano?
May and October typically offer the most optimal weather in Agano. In contrast, January, February, March, July, August and December tend to have less optimal conditions. Agano has a distinct rainy season from June to January, with very warm summers and cold winters.
What temperatures can I expect in Agano?
Daytime highs range from 5°C (41°F) in January to 30°C (86°F) in August. Nighttime lows range from -2°C (28°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Agano get?
Annual rainfall is around 2261 mm (89 in). July is the wettest month with 300 mm (12 in), while April is the driest with 134 mm (5.3 in).
How sunny is Agano?
Agano receives around 1,663 hours of sunshine per year. August is the sunniest month with 209 hours, while January is the cloudiest with just 58 hours.
Agano 3-Day Forecast
Agano on the map
Agano is highlighted - select any city to see its climate.
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