Karuizawa Weather in October

October in Karuizawa averages 18°C (64°F) during the day and 9°C (48°F) at night. October is part of the rainy season, with around 178 mm (7 in) of rainfall and frequent showers.

Rainfall in Karuizawa in October

Karuizawa is in the rainy season in October, with rain on around 15 days and an average of 178 mm (7 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Karuizawa in October

In October, Karuizawa sees moderate temperatures, with highs of 18°C (64°F). Nights drop to around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Karuizawa in October

You can expect a moderate amount of sunlight, with approximately 155 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

If you prefer dry days with pleasant temperatures, May typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.