Niseko Weather in May
Niseko in May sees moderate temperatures, with highs around 16°C (61°F) and overnight lows of 7°C (45°F). Rainfall is fairly high at around 92 mm (3.6 in) on average, so pack waterproofs just in case.
Rainfall in Niseko in May
Expect around 18 days of rain based on historical data, with 92 mm (3.6 in) average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Niseko in May
In May, Niseko gets moderate temperatures, with highs of 16°C (61°F). Nights cool to around 7°C (45°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Niseko in May
The month enjoys around 199 hours of sunshine, creating mostly sunny days with good weather conditions.If you prefer enjoying temperate temperatures and rain-free days, June typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 May
Min Temperature
7°C (45°F)
Max Temperature
16°C (61°F)
Chance of Rain
60%
Precipitation
92 mm (3.6 in)
Rainy days
18 days
Humidity
66% *
Sunshine
199 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Niseko typically rise from around 14°C (57°F) at the start of May to approximately 19°C (66°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 9°C (48°F).
Average temperatures in May
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 May
Historical weather for Niseko in May
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 May
Our historical data for Niseko spans 1976 to 2026, revealing these weather extremes.
- The hottest May day on record in Niseko reached 31°C (88°F) (May 26, 2019).
- The lowest daytime temperature in May was 4°C (39°F), recorded on May 2, 2006.
- Niseko registered its coldest May night on May 11, 1998, with temperatures dropping to -1°C (30°F).
- The wettest day in May Niseko was on May 20, 2008 with 54 mm (2.1 in) of precipitation.
Best Places in Japan in May
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in May →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Niseko in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Niseko in May
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.
