Isla Vista
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Isla Vista, CA

Ocean temperature

In Isla Vista, California, the average seawater temperature in December is 58.5°F (14.7°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

The month with the shortest days in Isla Vista, California, is December, with an average of 9.9h of daylight.

How cold is the water in December in Isla Vista?

In Isla Vista, California, the average seawater temperature in December is 58.5°F (14.7°C). 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.

What is the month with the shortest days in Isla Vista?

The month with the shortest days is December, with an average of 9.9h of daylight.

What is the average length of the day in December in Isla Vista?

In Isla Vista, California, the average length of the day in December is 9.9h.
Average sea temperature in December - Isla Vista, CA
  • Average sea temperature in December: 58.5°F

The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is April (55.7°F).

Average daylight in December - Isla Vista, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).