Weather in Marin County, United States in May

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Visiting Marin County, United States in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise into June. May has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.2hrs making the days very long and bright. It is a great time for sunbathing in Marin County.

May has total rainfall of 0.7cm (0.3inches) making it extremely dry with very few light showers and most days are rain free. There are just 2.6 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between.

Sea temperatures are a cold 15°C (60°F). May is too cold for swimming in Marin County for any length of time, unless you have a wetsuit. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Consider visiting Marin County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for May.

Can you sunbathe in Marin County in May?

Yes, May is a great time for sunbathing in Marin County.

May has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.2hrs making the days very long and bright. May has total rainfall of 0.7cm (0.3inches) making it extremely dry with very few light showers and most days are rain free. There are just 2.6 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between.

More about May temperature and sunshine.

Can you swim in Marin County in May?

No, May is too cold for swimming in Marin County for any length of time, with the sea water at 15°C (60°F), unless you have a wetsuit.

More about May sea temperatures.

Is May a good time to holiday in Marin County?

Yes, May is a good time for a holiday in Marin County.

May has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.2hrs making the days very long and bright. May has total rainfall of 0.7cm (0.3inches) making it extremely dry with very few light showers and most days are rain free. There are just 2.6 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between. It is a great time for sunbathing in Marin County. Sea temperatures are a cold 15°C (60°F). May is too cold for swimming in Marin County for any length of time, unless you have a wetsuit.

More about the May temperatures and sunshine.

Is Marin County warm in May?

Yes, Marin County is nice and warm and makes sunbathing pleasant on clear days in May.

The average maximum temperature in Marin County in May is 21°C (69°F). The average maximum temperature is 19°C (66°) in the previous month and 23°C (73°F) in the next month.

The average temperature in Marin County in May is 15°C (59°F). The average temperature is 13°C (56°F) in the previous month and 17°C (62°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Marin County in May?

The average day light hours per day in Marin County in May are 14.2. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.2hrs making the days very long and bright.

More about May sunshine.

Temperature in Marin County in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise into June. The average maximum temperature in Marin County in May is 21°C (69°F). The average maximum temperature is 19°C (66°F) in the previous month and 23°C (73°F) in the next month.

The average temperature in Marin County in May is 15°C (59°F). The average temperature is 13°C (56°F) in the previous month and 17°C (62°F) in the next month.

The average minimum temperature in Marin County in May is 9°C (48°F). The minimum temperature is 8°C (47°F) in the previous month and 11°C (51°F) in the next month.

Sunshine in Marin County in May

The days in May are longer than the previous month and the days continue to get slightly longer into June. May has slightly more hours of sunshine than the previous month and hours of sunshine continue to rise into June. During May the average day light hours are 14.2 per day in Marin County. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.2hrs making the days very long and bright.

The ultraviolet index in Marin County in May is typically 9.6 during May. 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.

Sea Temperature in Marin County in May

The average sea water temperature in Marin County in May is 15.4°C (59.7°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Rainfall in Marin County in May

May weather is slightly drier than the previous month. May has fewer days of rain than the previous month and rainy days continue to drop slightly into June. The average total rainfall in Marin County in May is 0.7cm (0.3inches) and on average there are 2.6 rainy days in May making it a very dry time to visit the beach.

Humidity in Marin County in May

The maximum dew point (an indicator of humidity) in Marin County in May is 11°C (52°F) which is very comfortable. The dew point is 11°C (51°F) in the previous month and 12°C (12°F) in the next month.

The average maximum relative humidity in Marin County in May is typically 91.4%. The maximum relative humidity is 92.1% in the previous month and 91.5% in the next month.

The average relative humidity in Marin County in May is typically 71.1%. The average relative humidity is 73.5% in the previous month and 71.4% in the next month.

Wind Speed in Marin County in May

The average maximum wind speed in Marin County in May is typically 34KM/H (21MPH). The average maximum wind speed is 33KM/H (21MPH) in the previous month and 33KM/H (21MPH) in the next month.

The average wind speed in Marin County in May is typically 16KM/H (10MPH). The average wind speed is 14KM/H (9MPH) in the previous month and 15KM/H (9MPH) in the next month.

The average wind direction in Marin County in May is from the West-Northwest.

Monthly Averages

Suggested Beaches in May

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.