Koshu Weather in October

In Koshu, October brings pleasant daytime temperatures around 18°C (64°F), with nights cooling to 9°C (48°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Koshu in October

Koshu is in the rainy season in October, with rain on around 14 days and an average of 217 mm (8.5 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Koshu in October

October in Koshu brings typical temperatures with highs around 18°C (64°F) and lows of 9°C (48°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Koshu in October

You can expect a moderate amount of sunlight, with approximately 170 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

If you're looking for dry conditions and comfortable temperatures, October may not be the ideal month to visit Koshu. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Koshu Temperature in October

Min Temperature 9°C (48°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 48%  

Precipitation 217 mm (8.5 in)  

Rainy days 14 days  

Humidity 68% *  

Sunshine 170 hours *  

Percentage Sunshine *  

* Data from: Yamanashi, Japan (4 KM, 2 Miles).

What to Wear in Koshu in October

Pleasant temperatures in October mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Koshu in October

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

Swimming

6/10

Camping

3/10

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 Koshu's climate page.

More climate data for Koshu

Temperature Rainfall Sunshine Humidity

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