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

December weather forecast and climate
Willoughby, OH

Ocean temperature

In Willoughby, Ohio, the average seawater temperature in December is 40.5°F (4.7°C).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

December has the shortest days of the year in Willoughby, with an average of 9.2h of daylight.

What is the water temperature in December in Willoughby?

In December, the average ocean temperature in Willoughby is 40.5°F (4.7°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the month with the shortest days in Willoughby?

The month with the shortest days in Willoughby is December, with an average of 9.2h of daylight.

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

The average length of the day in December in Willoughby, Ohio, is 9.2h.
Average sea temperature in December - Willoughby, OH
  • Average sea temperature in December: 40.4°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 December - Willoughby, OH
  • Average daylight in December: 9.2h

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