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

May weather forecast and climate
Montara, CA

Ocean temperature

In Montara, California, in May, the average water temperature is 52.7°F (11.5°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.


In May, the average length of the day is 14.2h.

How cold is the water in May in Montara?

In Montara, California, the average seawater temperature in May is 52.7°F (11.5°C). Swimming in 52.7°F (11.5°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.

How many hours of daylight does Montara have in May?

In May, the average length of the day in Montara is 14.2h.
Average sea temperature in May - Montara, CA
  • Average sea temperature in May: 52.7°F

The best month for swimming (with the highest average sea temperature) is September (56.9°F).
The coldest month (with the lowest average sea temperature) is June (52.4°F).

Average daylight in May - Montara, CA
  • Average daylight in May: 14.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).