Sapporo Weather in September
September in Sapporo brings high temperatures around 22°C (72°F) during the day, dropping to 14°C (57°F) at night, with quite a bit of rainfall expected, averaging around 158 mm (6.2 in) for the month.
Rainfall in Sapporo in September
Looking at the last 30 years, the data shows about 18 days with rain, averaging 158 mm (6.2 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Sapporo in September
September in Sapporo sees highs of 22°C (72°F) and lows of 14°C (57°F) overnight. The summer season is characteristic of September. This kind of day-to-night contrast is typical for this time of year. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Sapporo in September
The area enjoys a balanced 161 hours of sunlight, ensuring it's neither too overcast nor too sunny.If you prefer dry days with pleasant temperatures, 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 Sapporo's climate page.
Sapporo Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
22°C (72°F)
Chance of Rain
60%
Precipitation
158 mm (6.2 in)
Rainy days
18 days
Humidity
71%
Sunshine
161 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Sapporo typically drop from around 25°C (77°F) at the start of September to approximately 20°C (68°F) by the end. Nights are pleasant, with lows typically ranging from 10°C (50°F) to 18°C (64°F).
Average temperatures in September
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 September
Historical weather for Sapporo in September
Browse day-by-day weather records for Sapporo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sapporo historical weather extremes in September
The extremes listed below come from historical weather data collected in Sapporo from 1976 through 2025.
- Sapporo recorded its highest September temperature of 32°C (90°F) on September 8, 2020.
- The lowest daytime temperature in September was 14°C (57°F), recorded on September 20, 1994.
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 30, 1983).
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sapporo in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Sapporo in September
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 Sapporo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Sapporo climate overview or explore weather in Japan.
