Wakkanai weather in September 2025

Expect 19°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Wakkanai in September. Check more long-term weather averages for Wakkanai in September before you book your next holiday to Japan in 2025/2026.

  • 19°C maximum daytime temperature in September in Wakkanai19
    19°C max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in September in Wakkanai17
    17 days with some rainfall
  • 13°C minimum night-time temperature in September in Wakkanai13
    13°C min night temperature
  • 13 hours of daylight per day in September in Wakkanai13
    13 hours of daylight per day
  • No heat & humidity in September in Wakkanai0
    No heat & humidity
  • 133 mm monthly rainfall in September in Wakkanai133
    133 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Wakkanai5
    5 (Moderate) UV index
  • 19°C sea temperature in September in Wakkanai19
    19°C sea temperature

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The September weather guide for Japan (Wakkanai) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Japan

How hot is it in Wakkanai in September?

Daytime temperatures usually reach 19°C in Wakkanai in September, falling to 13°C at night.

How sunny is it in Wakkanai in September?

There are normally 6 hours of bright sunshine each day in Wakkanai in September - that's 47% of daylight hours.

How warm is the sea around Wakkanai in September?

The average sea temperature around Wakkanai in September is 19°C.

Does it rain in Wakkanai in September?

There are usually 17 days with some rain in Wakkanai in September and the average monthly rainfall is 133mm.

What is the chance of a typhoon in Wakkanai in September?

On average less than 1 day in September in Wakkanai is likely to be affected by the passage of one or more tropical storms.

Wakkanai September sunrise & sunset times

Browse the sunrise and sunset times for Wakkanai in September 2025. Select a month to view Wakkanai sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 04:54 18:11
Monday, 15th September 2025 05:11 17:45
Tuesday, 30th September 2025 05:30 17:16

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