Oakland
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Oakland, CA

Ocean temperature

The month with the warmest seawater in Oakland, California, is September, with an average ocean temperature of 57.4°F (14.1°C).
Note: Swimming in 57.4°F (14.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

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

When is the ocean warmest in Oakland?

September is the month with the warmest seawater, with an average ocean temperature of 57.4°F (14.1°C).

What is the ocean temperature in September in Oakland?

In Oakland, California, in September, the average water temperature is 57.4°F (14.1°C). Swimming in 57.4°F (14.1°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 Oakland have in September?

In September, the average length of the day in Oakland is 12.4h.
Average sea temperature in September - Oakland, CA
  • Average sea temperature in September: 57.3°F

The best month for swimming (with the highest average sea temperature) is September (57.3°F).
Coldest months (with the lowest average sea temperature) are April and June (53°F).

Average daylight in September - Oakland, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).