Cool
Average highs are around 20°C, so pack for cooler days.
September verdict
Wakkanai, Japan in September
Weather score41Mixed
Mixed for holiday weather
Average highs are around 20°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 133mm, so some wet days are possible.
September weather
Monthly averages
Temp
20°C
Rain
133mm
Sun
5.8h
Sea
20°C
Weather score
41
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 133mm, so some wet days are possible.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 20°C, so the water can feel cool.
Map
Weather map
Compare Wakkanai, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September20°C average high
September is one of Wakkanai's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September133mm average rain
September is one of Wakkanai's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to June
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.8 hours average sun
September is one of Wakkanai's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMarch to September
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September20°C average sea
September is one of Wakkanai's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to October
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
September41 weather score
September scores above Wakkanai's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.