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

October weather forecast and climate
Hercules, CA

Ocean temperature

In Hercules, California, the average seawater temperature in October is 56.8°F (13.8°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.

Daylight

In Hercules, the average length of the day in October is 11.2h.

What is the water temperature in October in Hercules?

In Hercules, in October, the average water temperature is 56.8°F (13.8°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 October in Hercules?

The average length of the day in October in Hercules, California, is 11.2h.
Average sea temperature in October - Hercules, CA
  • Average sea temperature in October: 56.8°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 October - Hercules, CA
  • Average daylight in October: 11.2h

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