Best time to visit Biwako Valley

The climate in Biwako Valley through the year

When to go

No month in Biwako Valley reaches a good score (65 or more) with the default preferences. May comes closest with 61 out of 100. A typical May day reaches 23°C and the night falls to 12°C, with rain on about 15 days and clear sky 35 % of the time. April, June and October are a fair alternative, with scores of 50–58. The lowest score is in February (14), when days are cool at around 7°C.

Seasons and rain

The seasons are sharply different: a August day (31°C) is about 25 degrees warmer than a January day (6°C). Nights typically drop below freezing in January and February. July is the wettest month with 228 mm and November the driest with 92 mm, out of about 1,690 mm a year. The air feels muggy in July and August.

Sea and daylight

The sea is 22°C or warmer in July–October, peaking at 28°C in August. It is coldest in March (10°C). Daylight lasts from about 10 hours in December to 14.5 hours in June.

By type of trip

The best months change with what you want to do. Each of Eddigo’s trip types has its own preferred daytime temperature and its own weights for rain, humidity and sun. Biwako Valley scores 65 or more in these months:

• Cooler weather (10–20 °C): March–May and October–December, up to 82

How it compares

Of the 191 destinations Eddigo covers in Japan, Biwako Valley is the 28th warmest over the year and the 77th wettest. In May, when Biwako Valley scores 61, Kunimidake Snow Resort (55 km away) scores 60 and Okuibuki Ski Resort (56 km away) scores 60. See where to go in May for the best destinations that month.