Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Sapporo, Hokkaido, Japan in September
Weather score39Poor
Poor for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 5.4h per day, enough for a balanced month. Rainfall averages 150mm, so some wet days are possible.
September weather
Monthly averages
Temp
21°C
Rain
150mm
Sun
5.4h
Sea
21°C
Weather score
39
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 150mm, so some wet days are possible.
Some sun
Sunshine averages 5.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Weather map
Compare Sapporo, Hokkaido, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September150mm average rain
September is wetter than Sapporo's yearly average, so flexible plans matter more.
Driest monthsJanuary to June and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.4 hours average sun
September is brighter than Sapporo's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to June and September
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September21°C average sea
September is one of Sapporo's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 19°C in this stretch, so swimming comfort is at its strongest.
Weather score
September39 weather score
September scores above Sapporo's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
