Opal Cliffs
California, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Opal Cliffs, CA

Ocean temperature

In March, the average ocean temperature in Opal Cliffs, California, is 54.5°F (12.5°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.


The average length of the day in March is 12h.

What is the water temperature in March in Opal Cliffs?

In Opal Cliffs, in March, the average water temperature is 54.5°F (12.5°C). Swimming in 54.5°F (12.5°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Opal Cliffs have in March?

The average length of the day in March in Opal Cliffs, California, is 12h.
Average sea temperature in March - Opal Cliffs, CA
  • Average sea temperature in March: 54.5°F

Best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).

Average daylight in March - Opal Cliffs, CA
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).