The climate in Hakodate during September can be summarized as mild and wet.
September is in the fall / autumn in Hakodate and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 14°C (56°F) is normal.
|Daytime temperature||21.9°C 71.4°F|
|Nightly temperature||13.5°C 56.3°F|
|Average temperature||17.7°C 63.9°F|
|Daily sunshine||5.8 hrs|
|Avg rainfall||171 mm 6.7 ins|
|Rainy days||18 days|
|Sea temperature||21.4°C 70.5°F|
|Windspeed||10.1kph 6 mph|
On average September is the wettest month of the year in Hakodate with around 171mm 6.7 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 5.8 hours of sunshine per day.
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 Hakodate in September 2022.
|Hottest month:||August||25.3°C 77.5°F|
|Driest month:||February||63mm 2.5ins|
|Coldest month:||January||-0.2°C 31.6°F|
|Wettest month:||September||171mm 6.7ins|