Willoughby
Ohio, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Willoughby, OH

Ocean temperature

In Willoughby, Ohio, in September, the average water temperature is 70.7°F (21.5°C).
Note: For most, swimming in 70.7°F (21.5°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In Willoughby, the average length of the day in September is 12.5h.

What is the ocean temperature in September in Willoughby?

In Willoughby, Ohio, in September, the average water temperature is 70.7°F (21.5°C). For most, swimming in 70.7°F (21.5°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in September in Willoughby?

In September, the average length of the day in Willoughby is 12.5h.
Average sea temperature in September - Willoughby, OH
  • Average sea temperature in September: 70.7°F

The best month for swimming (with the highest average sea temperature) is August (75.7°F).
The coldest month (with the lowest average sea temperature) is February (32.5°F).

Average daylight in September - Willoughby, OH
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).