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

September weather forecast and climate
Opal Cliffs, CA

Ocean temperature

August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Opal Cliffs, California.
Note: Swimming in 58.1°F (14.5°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Opal Cliffs, the average length of the day in September is 12.4h.

What are the months with the warmest ocean in Opal Cliffs?

August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Opal Cliffs.

What is the water temperature in September in Opal Cliffs?

In Opal Cliffs, in September, the average water temperature is 58.1°F (14.5°C). Swimming in 58.1°F (14.5°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 September in Opal Cliffs?

The average length of the day in September in Opal Cliffs is 12.4h.
Average sea temperature in September - Opal Cliffs, CA
  • Average sea temperature in September: 58.1°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 September - Opal Cliffs, CA
  • Average daylight in September: 12.4h

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