Oyama Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Oyama.
Climate overview of Oyama
Temperatures in Oyama, Tochigi, Japan, vary greatly throughout the year. August is the hottest month at 32°C (90°F), while January is the coldest at 9°C (48°F).
The city receives considerable rain/snowfall, with around 1654 mm (65 in) annually. September is the wettest month. It has a distinct rainy season from June to October. The most sunshine falls in January, with an average of 6.7 hours of daily sunshine.
Oyama Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oyama — and find the best time to visit.
Monthly Temperature in Oyama
The climate in Oyama is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in August to a chilly 9°C (48°F) in the coolest month, January.
Nights vary from 23°C (73°F) in August to around -1°C (30°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Oyama
Oyama has a notably wet climate with abundant precipitation, recording 1654 mm (65 in) of rain/snowfall per year. The climate in Oyama shows significant variation throughout the year. Expect heavy rainfall in September, the wettest month, with an average of 221 mm (8.7 in) of precipitation over 20 rainy days.
In contrast, the driest month December offers drier and sunnier days, with around 55 mm (2.2 in) of rainfall over 7 rainy days. For more details, please visit our Oyama 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 Oyama
Oyama offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between January (6.7 hours daily) and June (4.2 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Oyama
The wettest months are June, July, August, September and October, when precipitation is at its highest. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Oyama
What is the best time to visit Oyama?
May typically offers the most optimal weather in Oyama. In contrast, January, February and July tend to have less optimal conditions. Oyama has a distinct rainy season from June to October.
What temperatures can I expect in Oyama?
Daytime highs range from 9°C (48°F) in January to 32°C (90°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 Oyama get?
Annual rainfall is around 1654 mm (65 in). September is the wettest month with 221 mm (8.7 in), while December is the driest with 55 mm (2.2 in).
How sunny is Oyama?
Oyama 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, Oyama enjoys abundant sunshine.
Oyama 3-Day Forecast
Oyama 3-Day Forecast
Oyama on the map
Oyama is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Osaka
32°C (90°F) Tokyo30°C (86°F) Naha
30°C (86°F) Kyoto31°C (88°F) Hakone28°C (82°F) Hakuba26°C (79°F) Sapporo24°C (75°F) Niseko24°C (75°F) 
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