Oyama Weather in September

September in Oyama averages 28°C (82°F) during the day and 20°C (68°F) at night. It is the wettest month of the year, with 221 mm (8.7 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Oyama in September

Oyama is in the rainy season in September, with rain on around 20 days and an average of 221 mm (8.7 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.

Temperature in Oyama in September

Daytime temperatures in Oyama reach 28°C (82°F) in September, dropping to 20°C (68°F) at night. September is in the summer season. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 20°C (68°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Oyama in September

You can expect a moderate amount of sunlight, with approximately 137 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May typically offers the best weather for Oyama.

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• January
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For a detailed overview over the year and the best time to visit Japan, check out our Oyama's climate page.

Oyama Temperature in September

Min Temperature 20°C (68°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 66%  

Precipitation 221 mm (8.7 in)  

Rainy days 20 days  

Sunshine 137 hours *  

Percentage Sunshine *  

* Data from: Saitama, Japan (51 KM, 31 Miles).

What to Wear in Oyama in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Oyama in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Oyama's climate page.

More climate data for Oyama

Temperature Rainfall Sunshine

See the full Oyama climate overview or explore weather in Japan.