The climate in Hekinan during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Hekinan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 20°C (68°F) is normal.
|Daytime temperature||27.7°C 81.8°F|
|Nightly temperature||20.2°C 68.3°F|
|Average temperature||23.9°C 75°F|
|Daily sunshine||5.1 hrs|
|Avg rainfall||221 mm 8.7 ins|
|Rainy days||17 days|
|Sea temperature||26.7°C 80°F|
|Windspeed||9.4kph 6 mph|
On average September is the 3rd wettest month of the year in Hekinan with around 221mm 8.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 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 September 2019.
|Hottest month:||August||31.3°C 88.3°F|
|Driest month:||December||36mm 1.4ins|
|Coldest month:||January||8.7°C 47.7°F|
|Wettest month:||June||236mm 9.3ins|