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

April weather forecast and climate
Opal Cliffs, CA

Ocean temperature

With an average ocean temperature of 53.8°F (12.1°C), April is the month with the coldest seawater in Opal Cliffs, California.
Note: Swimming in 53.8°F (12.1°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.

Daylight

In Opal Cliffs, California, the average length of the day in April is 13.2h.

What month is the ocean coldest in Opal Cliffs?

With an average ocean temperature of 53.8°F (12.1°C), April is the month with the coldest seawater in Opal Cliffs, California.

What is the ocean temperature in April in Opal Cliffs?

In Opal Cliffs, California, in April, the average water temperature is 53.8°F (12.1°C). Swimming in 53.8°F (12.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in April in Opal Cliffs?

In Opal Cliffs, California, the average length of the day in April is 13.2h.
Average sea temperature in April - Opal Cliffs, CA
  • Average sea temperature in April: 53.8°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 April - Opal Cliffs, CA
  • Average daylight in April: 13.2h

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