Otsu Weather in September

September in Otsu averages 29°C (84°F) during the day and 20°C (68°F) at night. Quite a bit of rainfall is typical this month, with around 185 mm (7.3 in) on average. An umbrella is a good idea.

Rainfall in Otsu in September

Records from the past 30 years suggest around 18 days of rain, with 185 mm (7.3 in) average for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Otsu in September

Expect highs of 29°C (84°F) in Otsu in September, with nights dropping to around 20°C (68°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. 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 Otsu in September

The area enjoys a moderate level of sunlight, with around 140 hours. It's a good balance between sunny and cloudy days.

If you prefer dry days with pleasant temperatures, May and October typically offer 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.