Sapporo Weather in September: Climate, Temperature & Travel Tips
Avg 18.8°C · 146mm rain — September is autumn in Sapporo.
- Avg high
- 22.8 °C
- Avg low
- 14.8 °C
- Avg
- 18.8 °C
- Precipitation
- 146 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
September in Sapporo, Japan brings autumn conditions: average temperature 18.8°C, average high 22.8°C, average low 14.8°C. Monthly rainfall averages 146mm, making it a wet time of year.
Conditions are pleasant for most travel activities.
What to Pack
- Light layers (long sleeves + light jacket for evenings)
- Comfortable walking shoes
- Compact umbrella and waterproof jacket
Best Things to Do
- Walking tours and city exploration
- Parks and outdoor cafes
- Seasonal food and night markets (where applicable)
Pros and Cons of Visiting in September
Pros:
- Pleasant temperatures for walking and outdoor sightseeing
- Shoulder season often means smaller crowds and lower prices
Cons:
- Frequent rain — pack waterproof gear
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 August 22.8°C
- 2 July 21.6°C
- 3 September 18.8°C
- 1 January -3.4°C
- 2 February -3.0°C
- 3 December -1.0°C
FAQ
01 What is the average temperature in Sapporo in September? +
The average is 18.8°C, with a high of 23°C and a low of 15°C.
02 What is Sapporo like to visit in September? +
It is autumn in Sapporo, which is ideal for outdoor exploration.
03 Does it rain often in Sapporo during September? +
Average rainfall is 146mm, which is high — expect frequent rain.
04 What should I pack for Sapporo in September? +
Light layers (long sleeves + light jacket for evenings); Comfortable walking shoes.
05 Is September a peak travel season for Sapporo? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17