Otaru Weather in September

What's the weather like in Otaru (Hokkaidō) in September 2024?

The climate in Otaru during September can be summarized as mild and wet.

September is in the fall / autumn in Otaru and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 11°C (51°F) is normal.

Otaru weather averages (imperial / metric)
Daytime temperature 19.6°C 67.2°F
Nightly temperature 10.7°C 51.3°F
Average temperature 15.1°C 59.2°F
Daily sunshine 6 hrs
Avg rainfall 144 mm 5.7 ins
Rainy days 18 days
Sea temperature 20.4°C 68.8°F
Humidity 76%
Windspeed 9.9kph 6 mph

On average September is the 2nd wettest month of the year in Otaru with around 144mm 5.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.

On the flip side this corresponds to an average of 6 hours of sunshine per day.

September temperatures in Otaru

Otaru average temperature in September

September rainfall

Otaru average rain in September

September hourly sunshine

Otaru average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Otaru in September 2024.

Other monthly averages

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UV index Best time to go?

Otaru weather stats

Otaru weather statistics
Hottest month: August 23.5°C 74.3°F
Driest month: May 70mm 2.8ins
Sunniest month: April 6.4hrs
Coldest month: January -3.8°C 25.2°F
Wettest month: August 152mm 6ins
Map showing location of Otaru (43.18944, 141.00222) Otaru map pin © Google

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