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

February weather forecast and climate
Hercules, CA

Ocean temperature

In Hercules, California, in February, the average water temperature is 52.9°F (11.6°C).
Note: Swimming in 52.9°F (11.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.


In Hercules, the average length of the day in February is 10.8h.

What is the water temperature in February in Hercules?

In February, the average ocean temperature is 52.9°F (11.6°C). 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.

What is the average length of the day in February in Hercules?

The average length of the day in February in Hercules, California, is 10.8h.
Average sea temperature in February - Hercules, CA
  • Average sea temperature in February: 52.9°F

The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).

Average daylight in February - Hercules, CA
  • Average daylight in February: 10.8h

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