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Niseko, Japan · Alpine mountain climate

Niseko in August: go or not?

Good time. Niseko in August gets 7.6/10.

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 42.81°N · 140.69°E
⚡ This month's verdict
Go for it
Niseko · August
7.6
18–26°
Temperature
43%
Rain
5h
Sun
❄️ Alpine climate☀️ High-altitude UV🌦️ Changeable weather
Photo : Marek Okon via Unsplash
The month in detail

What to expect in August

Off-season for skiing Niseko — lifts are closed. Consider hiking, mountain biking or summer activities at altitude.

August ranks 2 out of 12 months in Niseko. Compared to July: +2°F daytime, 8 pts more rainy days, −1.0h of sun per day.

This month's conditions

What it's like in August

UV index
6 · moderate
protect during midday hours
Feels like
muggy at times
19°
Daylight
13.8h of daylight
Air quality
good
AQI 21
Compare

Is August the right month?

The best month in Niseko is July (7.9/10), 0.3 pt higher than August.

See July →See all 12 months →
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Niseko

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a mountain stay.

Country · Japan

🗣️LanguageJapanese
💶CurrencyYen japonais (¥)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeAlpine mountain climate
📈Climate trend ⓘ+2.56°F/decade
🔥Hottest monthAugust · 79°F
❄️Coolest monthJanuary · 28°F
🌧️Rainiest month ⓘDecember · 53%

🏔️ Mountain stay

⛰️Village altitude1312 ft
🎿Ski area1312 → 4291 ft
⛷️Ski seasonDec → May
🥾Hiking seasonJun → Sep
🧗High mountains ⓘGuide recommended
Location

Where is Niseko ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Japan
Alpine mountain climate climate with a 7.9 → 0.6 gap between best and worst month. 10 years of ERA5 data to choose by project.
42.81°N · 140.69°E
Questions

Frequently asked questions

When is the best time to visit Niseko?
It depends on the activity. For skiing: February (ski score 7.8/10). For hiking/suiner: February (7.8/10, -1.0°F).
Can you ski in Niseko in winter?
Yes, it's peak ski season. Average ski score December–February: 7.6/10. Cold temperatures (-2°F max in January) and frequent snowfall.
Is it warm in Niseko in suiner?
In February, temperatures average -1.0°F. Ideal for hiking and outdoor activities.
What is the wettest month in Niseko?
November is the wettest month with November has the lowest climate score of the year.
Do you need sun protection in Niseko in August?
The average UV index reaches 6 in August in Niseko (moderate), with about 13.8h of daylight. Protect during midday hours.