Cayucos
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Cayucos, CA

Ocean temperature

In December, the average ocean temperature in Cayucos, California, is 57.6°F (14.2°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

December has the shortest days of the year in Cayucos, with an average of 9.8h of daylight.

What is the ocean temperature in December in Cayucos?

In Cayucos, California, the average seawater temperature in December is 57.6°F (14.2°C). Swimming in 57.6°F (14.2°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Cayucos?

The month with the shortest days is December, with an average of 9.8h of daylight.

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

In December, the average length of the day in Cayucos, California, is 9.8h.
Average sea temperature in December - Cayucos, CA
  • Average sea temperature in December: 57.5°F

Best months for swimming (with the highest average sea temperature) are August and October (58.6°F).
The coldest month (with the lowest average sea temperature) is April (54.3°F).

Average daylight in December - Cayucos, CA
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).