Weather in January
In January, the average ocean temperature in Seacliff State Beach, California, is 54.1°F (12.3°C). Note: It is risky to swim in 54.1°F (12.3°C). Weather in January »
Weather in February
In Seacliff State Beach, California, in February, the average water temperature is 54.1°F (12.3°C). Note: Swimming in 54.1°F (12.3°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity. Weather in February »
Weather in March
In March, the average ocean temperature in Seacliff State Beach, California, is 54.5°F (12.5°C). Note: To swim in 54.5°F (12.5°C) at less than 50°F (10°C), ensure you're well-protected. Weather in March »
Weather in April
The month with the coldest seawater in Seacliff State Beach, California, is April, with an average ocean temperature of 53.8°F (12.1°C). Note: Swimming in 53.8°F (12.1°C) is considered dangerous. Weather in April »
Weather in May
In May, the average ocean temperature in Seacliff State Beach, California, is 54.1°F (12.3°C). Note: Immersing oneself in 54.1°F (12.3°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped. Weather in May »
Weather in June
In Seacliff State Beach, California, the average seawater temperature in June is 54.3°F (12.4°C). Note: Diving into 54.3°F (12.4°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation. Weather in June »
Weather in July
In Seacliff State Beach, California, the average seawater temperature in July is 56.8°F (13.8°C). Note: It is risky to swim in 56.8°F (13.8°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation. Weather in July »
Weather in August
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Seacliff State Beach, California. Note: While a brief time in 58.1°F (14.5°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state. Weather in August »
Weather in September
The months with the warmest seawater in Seacliff State Beach, California, are August and September, with an average ocean temperature of 58.1°F (14.5°C). Note: If planning to swim in 58.1°F (14.5°C) under 50°F (10°C), wear a protective suit. Weather in September »
Weather in October
In Seacliff State Beach, California, in October, the average water temperature is 57.7°F (14.3°C). Note: Unprotected swimming in 57.7°F (14.3°C) is dangerous due to potential cold shock. Weather in October »
Weather in November
In November, the average ocean temperature in Seacliff State Beach, California, is 56.5°F (13.6°C). Note: In 56.5°F (13.6°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health. Weather in November »
Weather in December
In Seacliff State Beach, California, in December, the average water temperature is 55.6°F (13.1°C). Note: It is risky to swim in 55.6°F (13.1°C). Weather in December »
Updated: Jul 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
What month is the ocean coldest?
With an average ocean temperature of 53.8°F (12.1°C), April is the month with the coldest seawater.
When are the longest days?
With an average of 14h and 42min of daylight, June has the longest days of the year.
What are the months with the warmest ocean in Seacliff State Beach?
August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater.
What is the month with the shortest days?
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average sea temperature
Seacliff State Beach, CA
The 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
Seacliff State Beach, CA
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
Seacliff State Beach, California, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location