Niseko Weather in August
August in Niseko brings high temperatures, with highs of 25°C (77°F) and nights dropping to 17°C (63°F). It's the rainiest month of the year, so come prepared with waterproof gear.
Rainfall in Niseko in August
Prepare for intense rain this month, as it marks the peak rainfall period. Having a poncho will keep you dry through the downpours. You can typically expect 18 days of rain this month, averaging around 181 mm (7.1 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Niseko in August
Niseko in August gets highs of 25°C (77°F) during the day and drops to 17°C (63°F) at night. The month of August belongs to the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 17°C (63°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. On average, it is the month with the highest temperature of the year.
Sunshine in Niseko in August
The area enjoys a moderate level of sunlight, with around 172 hours. It's a good balance between sunny and cloudy days.If your ideal day consists of dry skies and pleasant temperatures, June typically offers the best circumstances for Niseko.
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 Niseko's climate page.
Niseko Temperature in August
Min Temperature
17°C (63°F)
Max Temperature
25°C (77°F)
Chance of Rain
61%
Precipitation
181 mm (7.1 in)
Rainy days
18 days
Humidity
75% *
Sunshine
172 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Niseko typically stay consistent throughout August, with daily highs averaging around 25°C (77°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 19°C (66°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 Niseko in August
Browse day-by-day weather records for Niseko spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Niseko historical weather extremes in August
Based on weather observations in Niseko between 1976 and 2025, these are the recorded extremes during August.
- The warmest day in August was on August 23, 2023, with a maximum of 35°C (95°F).
- On August 10, 1993, Niseko saw its coldest August day with temperatures maxing out at 17°C (63°F).
- The coldest night in August in Niseko was on August 30, 2017, with a minimum of 8°C (46°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 →
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What to Wear in Niseko in August
For Niseko in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Niseko 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 Niseko's climate page.
Temperature Rainfall Sunshine Humidity
See the full Niseko climate overview or explore weather in Japan.
