Temperature
Pleasant by day, mild at night.
76°Ftypical Aug high
Biei is most comfortable in May and June. Summers are warm and winters are cold. Rain is frequent in most months. Humidity is usually low.

Pleasant by day, mild at night.
One of the wettest months.
Cloudier spells limit sunshine.
The air feels humid this month.
In August, afternoons feel about 78° and nights feel near 67°.
Mostly cloudy skies.
August late afternoons are around 75°F, easing to about 70°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Biei with Nikko.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology