Mount Haku Weather in August
August in Mount Haku brings high temperatures around 28°C (82°F) during the day, dropping to 19°C (66°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Mount Haku in August
Mount Haku is in the rainy season in August, with rain on around 20 days and an average of 242 mm (9.5 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in Mount Haku in August
Temperatures in Mount Haku in August top out at 28°C (82°F) and drop to 19°C (66°F) overnight. August is in the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.
Sunshine in Mount Haku in August
Enjoy a sunny month with about 208 hours of sunshine, even though this month falls in the wet season. There is still enough sun to enjoy the outdoors.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and August typically offer the best weather for Mount Haku.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Haku's climate page.
Mount Haku Temperature in August
Min Temperature
19°C (66°F)
Max Temperature
28°C (82°F)
Chance of Rain
65%
Precipitation
242 mm (9.5 in)
Rainy days
20 days
Humidity
73% *
Sunshine
208 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mount Haku typically stay consistent throughout August, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Mount Haku in August
Browse day-by-day weather records for Mount Haku spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Haku historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Mount Haku.
- Mount Haku recorded its highest August temperature of 37°C (99°F) on August 25, 2023.
- Mount Haku experienced its chilliest August day on August 30, 1976, reaching only 21°C (70°F).
- The coldest night in August in Mount Haku was on August 22, 2002, with a minimum of 15°C (59°F).
Best Places in Japan in August
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in August →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Mount Haku in August
Warm but pleasant conditions in Mount Haku in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Mount Haku in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Mount Haku's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mount Haku climate overview or explore weather in Japan.
