Isehara Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Isehara.
Climate overview of Isehara
Isehara, Kanagawa, Japan, sees big temperature differences between seasons, with August peaking at 29°C (84°F) and January dropping to 10°C (50°F).
Rain/snowfall is high, totalling around 1970 mm (78 in) per year. September is the wettest month and December the driest. The city also experiences warm summers and cold winters. The most sunshine falls in August, with an average of 6.9 hours of daily sunshine.
Isehara Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Isehara - and find the best time to visit.
Monthly Temperature in Isehara
Visitors to Isehara can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in August, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like January.
At night, you can expect temperatures ranging from 24°C (75°F) in August to around 2°C (36°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Isehara
Isehara is known for its substantial rain/snowfall, with annual precipitation reaching 1970 mm (78 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives heavy rainfall, averaging 244 mm (9.6 in) of precipitation, recorded across 19 rainy days. In contrast, the driest month December brings less rainfall, with 83 mm (3.3 in) over 8 rainy days. For more details, please visit our Isehara 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 Isehara
While the amount of sunshine in Isehara varies throughout the year, all seasons offer their own charm. Enjoy up to 6.9 hours of daily sun in August, and experience slightly darker atmosphere in September, with about 4.4 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Isehara by Month
The relative humidity is high throughout the year in Isehara.
The city experiences its highest humidity in June, reaching 78%. In January, the humidity drops to its lowest level at 54%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Isehara
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 August
- Warmest weather: July and August
- Most sunshine: August
- Fewest rainy days: January and December
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Isehara
What is the best time to visit Isehara?
May and August typically offer the most optimal weather in Isehara. In contrast, January, February and March tend to have less optimal conditions. Isehara has warm summers and cold winters.
What temperatures can I expect in Isehara?
Daytime highs range from 10°C (50°F) in January to 29°C (84°F) in August. Nighttime lows range from 2°C (36°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Isehara get?
Annual rainfall is around 1970 mm (78 in). September is the wettest month with 244 mm (9.6 in), while December is the driest with 83 mm (3.3 in).
How sunny is Isehara?
Isehara receives around 1,973 hours of sunshine per year. August is the sunniest month with 208 hours, while September is the cloudiest with just 131 hours.
Isehara 3-Day Forecast
Isehara on the map
Isehara is highlighted - select any city to see its climate.
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