Sapporo, Japan Weather
Sapporo hourly forecast: next 24 hours
Today's high of 68°F (20°C) is about 3°F (2°C) below the typical September high of 71°F (22°C).
Current conditions in detail
Sapporo weather tomorrow (Thursday, September 17)
Tomorrow in Sapporo looks sunny, with a high of 71° and an overnight low of 52°. Rain is unlikely (10% chance). Winds top out near 5 mph, and the UV index reaches 5 (moderate).
Sapporo 14-day forecast
About the weather in Sapporo
Sapporo runs one of the wider annual swings in our dataset: 27°C separates the average August from the average January. Afternoons reach 78°F (25°C) at the peak of summer and 28°F (-2°C) at the depth of winter, with 167 days of measurable precipitation through the year.
Sapporo weather: quick facts
- Hottest month: August - highs near 78°F (25°C)
- Coldest month: January - highs near 28°F (-2°C)
- Decade extremes (2015-2024): 92°F (33°C) high · -6°F (-21°C) low
- Wettest month: August (15 rainy days) · Sunniest: July (10.4 h sun/day)
- Climate type: humid continental
- Annual swing: 27°C between the average warmest and coolest month · day to night: 8°C
- Snow: about 56 days a year
- Months with freezing average lows: 4
- Average humidity: 77%
Temperatures through the year
At its warmest, in August, Sapporo runs to 78°F (25°C) in the afternoon and back to 65°F (18°C) by dawn. January bottoms out at 28°F (-2°C) in daylight, 16°F (-9°C) after dark. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 92°F (33°C) and the lowest daily minimum -6°F (-21°C). Between the average August and the average January lie 27°C, a wider spread than 91% of the 3496 cities in our dataset.
Rain, sun and snow
July is the brightest month at 10.4 hours of sun a day, against an annual average of 8.3 - duller than about 75% of the cities we track. Overnight lows average at or below freezing for 4 months, December through March. Snow falls on roughly 56 days a year, mostly November through April. August is the wettest month at 7.3 inches (186 mm) over 15 days; February is the driest.
Season by season
Spring (March through May)
Through spring, Sapporo runs cold: 52°F (11°C) by day, 35°F (2°C) after dark, and rain falls on around 36 of the 90 days, plus about 9 snowy days.
Summer (June through August)
Summer in Sapporo is pleasantly warm, with daytime highs averaging 74°F (23°C) and nights around 61°F (16°C); rain falls on around 40 of the 90 days.
Fall (September through November)
Through fall, Sapporo is crisp but comfortable: 59°F (15°C) by day, 45°F (7°C) after dark, and rain falls on around 42 of the 90 days, plus about 6 snowy days.
Winter (December through February)
Winter in Sapporo is frigid, with daytime highs averaging 30°F (-1°C) and nights around 18°F (-8°C); rain falls on around 49 of the 90 days, plus about 41 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Average temperatures in Sapporo by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 28° | 16° | 16 | 2.7 in | 6.1 h/day | 77% |
| February | 29° | 17° | 16 | 2.6 in | 7.3 h/day | 76% |
| March | 39° | 24° | 12 | 2.9 in | 8.6 h/day | 77% |
| April | 53° | 35° | 12 | 3.1 in | 9.6 h/day | 71% |
| May | 63° | 46° | 12 | 3.6 in | 9.9 h/day | 75% |
| June | 68° | 54° | 13 | 4.6 in | 10.0 h/day | 81% |
| July | 77° | 63° | 12 | 4.8 in | 10.4 h/day | 83% |
| August | 78° | 65° | 15 | 7.3 in | 9.3 h/day | 83% |
| September | 71° | 57° | 12 | 4.8 in | 8.8 h/day | 79% |
| October | 60° | 44° | 14 | 4.5 in | 8.1 h/day | 75% |
| November | 46° | 33° | 17 | 4.5 in | 6.3 h/day | 74% |
| December | 32° | 21° | 17 | 3.2 in | 5.8 h/day | 75% |