Ota Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ota.
Climate overview of Ota
Ota, Gunma, Japan, sees big temperature differences between seasons, with August peaking at 31°C (88°F) and January dropping to 9°C (48°F).
Rain/snowfall is high, totalling around 1642 mm (65 in) per year. September is the wettest month and December the driest. The city also experiences a distinct rainy season from June to October, with very warm summers and cold winters. The most sunshine falls in January, with an average of 6.7 hours of daily sunshine.
Ota Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ota - and find the best time to visit.
Monthly Temperature in Ota
Visitors to Ota can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 31°C (88°F) in August, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 23°C (73°F) in August to around -1°C (30°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Ota
Ota is known for its substantial rain/snowfall, with annual precipitation reaching 1642 mm (65 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives heavy rainfall, averaging 228 mm (9 in) of precipitation, recorded across 20 rainy days. In contrast, the driest month December brings less rainfall, with 52 mm (2 in) over 7 rainy days. For more details, please visit our Ota 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 Ota
While the amount of sunshine in Ota varies throughout the year, all seasons offer their own charm. Enjoy up to 6.7 hours of daily sun in January, and experience slightly darker atmosphere in June, with about 4.2 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Ota
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May
- Warmest weather: July and August
- Most sunshine: January
- Fewest rainy days: January and December
- Seasonal pattern: A distinct rainy season from June to October, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Ota
What is the best time to visit Ota?
May typically offers the most optimal weather in Ota. In contrast, January, February and July tend to have less optimal conditions. Ota has a distinct rainy season from June to October, with very warm summers and cold winters.
What temperatures can I expect in Ota?
Daytime highs range from 9°C (48°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 Ota get?
Annual rainfall is around 1642 mm (65 in). September is the wettest month with 228 mm (9 in), while December is the driest with 52 mm (2 in).
How sunny is Ota?
Ota receives around 2,031 hours of sunshine per year. January is the sunniest month with 202 hours, while June is the cloudiest with just 127 hours. Overall, Ota enjoys abundant sunshine.
Ota 3-Day Forecast
Ota on the map
Ota is highlighted - select any city to see its climate.
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