La Jolla
California, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
La Jolla, CA

Ocean temperature

In La Jolla, California, in January, the average water temperature is 59.4°F (15.2°C).
Note: For swimming, a surface water temperature of 59.4°F (15.2°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In January, the average length of the day in La Jolla, California, is 10.3h.

How cold is the water in January in La Jolla?

In January, the average ocean temperature is 59.4°F (15.2°C). Swimming in 59.4°F (15.2°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in January in La Jolla?

In La Jolla, the average length of the day in January is 10.3h.
Average sea temperature in January - La Jolla, CA
  • Average sea temperature in January: 59.2°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

Average daylight in January - La Jolla, CA
  • Average daylight in January: 10.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).