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Best
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Best
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Best
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Best
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Tan
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Tan
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Tan
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Tan
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Tan
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Sea
13°
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Sea
13°
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Sea
14°
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Sea
14°
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Sea
15°
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Sea
17°
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Sea
18°
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Sea
19°
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Sea
19°
Swim
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Sea
17°
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Sea
16°
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Sea
15°
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The annual average maximum daily temperature is 19.7°C (67.5°F) which is not that warm but sunbathing may be possible on some clear days. The annual average water temperature is typically 16.0°C (60.7°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. Annually there are on average 4.9 days of rain per month and 8.3 hours of sun per day.
The best months to visit Marin County are June, July, August, September, for the best beach weather, the most sunshine and optimal sunbathing and swimming conditions with the least chance of rain.
The weather is warm enough for sunbathing in the months from December to October when the maximum temperature reaches above 22°C (72°F)
The sea is best for swimming between June and October when the sea temperature is above the average 16°C (61°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
No, you can't sunbathe in Marin County all year round. Some months are too cold for sunbathing, however you might enjoy other beach activities such as taking a walk, going hiking along trails or just enjoying the scenery.
The weather is warm enough for sunbathing in the months from December to October when the maximum temperature reaches above 22°C (72°F)
More info about the annual temperatures and sunshine.
No, you can't swim in Marin County all year round.
The warmest sea water temperatures in Marin County are found in September when they peak at 19°C (66°F) and lowest in January when they dip to 13°C (56°F).
The sea temperature is above average for swimming between June and October when the sea temperature is above 16°C (61°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
More info about the annual sea temperatures
The hottest month in Marin County is September when the average maximum temperature is nice and warm and makes sunbathing pleasant on clear days 25°C (76°F), average temperature is 18°C (65°F) and average minimum temperature is 12°C (54°F).
More info about the annual temperatures and sunshine.
The coolest month in Marin County is January when the average maximum temperature is 15°C (58°F), average temperature is 9°C (49°F) and average minimum temperature is 4°C (39°F).
More info about the annual temperatures and sunshine
The driest month in Marin County is July with 0cm (0inches) of rain and the least days of rain with 0.2 days with some rain, an extremely dry time to visit the beach.
More info about the annual rainfall
The coldest sea water temperatures in Marin County are found in January when they dip to 13°C (56°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
More info about the annual sea temperatures.
The warmest sea water temperatures in Marin County are found in September when they peak at 19°C (66°F) which is comfortable for swimming though some may prefer warmer water.
More info about the annual sea temperatures.
The most humid month in Marin County is August with a dew point (an indicator of humidity) of 14°C (58°F) which is comfortable for everyone.
More info about the annual humidity.
The least humid month in Marin County is January with a dew point of 8°C (46°F) which is a bit dry for some.
More info about the annual humidity.
The most windy month in Marin County is May when the average maximum windspeed is 34KM/H (21MPH) and the average wind speed is 16KM/H (10MPH).
More info about the annual wind conditions.
The hottest month in Marin County is September when the average maximum temperature is 25°C (76°F), average temperature is 18°C (65°F) and average minimum temperature is 12°C (54°F).
The coolest month in Marin County is January when the average maximum temperature is 15°C (15°F), average temperature is 9°C (49°F) and average minimum temperature is 4°C (39°F).
The longest days in Marin County are in June, with an average of 14.8 hours of daylight per day. December has the shortest days with an average of 9.6 hours of daylight per day.
The sunniest days in Marin County are in June which has the most hours of sunshine per day. The sunshine percentage is 75.8% making it sunny and pleasant most of the time. The hours of sunshine per day are 11.2hrs making the days very long and bright.
December has the least sunshine. The sunshine percentage is 53.2% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 5.1 hours of sunshine per day.
The ultraviolet index is the highest in July when it reaches 10.6 and lowest in December when it reaches 2.2.
An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The warmest sea water temperatures in Marin County are found in September when they peak at 19°C (66°F) and lowest in January when they dip to 13°C (56°F).
The sea is best for swimming between June and October when the temperature is above 16°C (61°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
The wettest month in Marin County is December with 12.3cm (4.8inches) of rain and the most days of rain with 10.2 days with some rain, a pretty wet time to visit the beach.
The driest month in Marin County is July with 0cm (0inches) of rain and the least days of rain with 0.2 days with some rain, an extremely dry time to visit the beach.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
