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

January weather forecast and climate
Isla Vista, CA

Ocean temperature

In Isla Vista, California, in January, the average water temperature is 56.8°F (13.8°C).
Note: Swimming in 56.8°F (13.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.


In Isla Vista, the average length of the day in January is 10.2h.

What is the ocean temperature in January in Isla Vista?

In January, the average ocean temperature in Isla Vista, California, is 56.8°F (13.8°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.

How many hours of daylight does Isla Vista have in January?

The average length of the day in January in Isla Vista is 10.2h.
Average sea temperature in January - Isla Vista, CA
  • Average sea temperature in January: 56.8°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 January - Isla Vista, CA
  • Average daylight in January: 10.2h

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