Weather in Tomales Bay, Marin County, United States in August

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Visiting Tomales Bay, Marin County, United States in August

August is one of the best months to visit Tomales Bay for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in August is slightly cooler than the previous month. August has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.6hrs making the days long and bright.

August has total rainfall of 0cm (0inches) making it extremely dry with only very rare light showers. There are just 0.7 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 moderate 20°C (68°F). August is a pleasant month for swimming in Tomales Bay though some people may prefer warmer water. The sea temperature in August is marginally warmer than the previous month and temperatures continue to rise slightly into September.

August continues the trend of warm, sunny weather, making it a perfect time for beach activities. Sunbathing, swimming, and water sports such as snorkeling, diving, and paddleboarding are popular during this month. The water is warm and inviting, providing a refreshing escape from the summer heat. Also consider visiting Tomales Bay in one of the other best months of June, July, September, for the best beach weather. Also consider one of our other suggestions for August.

Can you sunbathe in Tomales Bay in August?

Yes, August is a good time for sunbathing in Tomales Bay.

August has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.6hrs making the days long and bright. August has total rainfall of 0cm (0inches) making it extremely dry with only very rare light showers. There are just 0.7 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 August temperature and sunshine.

Can you swim in Tomales Bay in August?

Yes, August is a pleasant month for swimming in Tomales Bay with moderate sea temperatures 20°C (68°F).

More about August sea temperatures.

Is August a good time to holiday in Tomales Bay?

Yes, August is a great time for a holiday in Tomales Bay.

August has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.6hrs making the days long and bright. August has total rainfall of 0cm (0inches) making it extremely dry with only very rare light showers. There are just 0.7 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 moderate 20°C (68°F). August is a pleasant month for swimming in Tomales Bay though some people may prefer warmer water.

More about the August temperatures and sunshine.

Is Tomales Bay warm in August?

Yes, Tomales Bay is very warm and perfect for sunbathing on clear days in August.

The average maximum temperature in Tomales Bay in August is 26°C (78°F). The average maximum temperature is 26°C (79°) in the previous month and 26°C (79°F) in the next month.

The average temperature in Tomales Bay in August is 18°C (65°F). The average temperature is 19°C (65°F) in the previous month and 18°C (65°F) in the next month.

More info about the August temperatures and sunshine.

How sunny is Tomales Bay in August?

The average day light hours per day in Tomales Bay in August are 13.7. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.6hrs making the days long and bright.

More about August sunshine.

Crowds in Tomales Bay in August

August is the peak month for beach visits at Tomales Bay, with the warmest weather and summer vacations in full swing. The beach will be quite crowded, and finding a quiet spot may be challenging.

Temperature in Tomales Bay in August

The weather in August is slightly cooler than the previous month. The average maximum temperature in Tomales Bay in August is 26°C (78°F). The average maximum temperature is 26°C (79°F) in the previous month and 26°C (79°F) in the next month.

The average temperature in Tomales Bay in August is 18°C (65°F). The average temperature is 19°C (65°F) in the previous month and 18°C (65°F) in the next month.

The average minimum temperature in Tomales Bay in August is 11°C (52°F). The minimum temperature is 11°C (52°F) in the previous month and 10°C (51°F) in the next month.

Sunshine in Tomales Bay in August

The days in August are slightly shorter than the previous month and days continue to get shorter into September. August has fewer hours of sunshine than the previous month and hours of sunshine continue to drop slightly into September. During August the average day light hours are 13.7 per day in Tomales Bay. The sunshine percentage is 70% making it sunny but overcast at times. The hours of sunshine per day are 9.6hrs making the days long and bright.

The ultraviolet index in Tomales Bay in August is typically 9.7 during August. 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 Tomales Bay in August

The average sea water temperature in Tomales Bay in August is 20.1°C (68.2°F) which is comfortable for swimming though some may prefer warmer water. The sea temperature in August is marginally warmer than the previous month and temperatures continue to rise slightly into September.

Rainfall in Tomales Bay in August

August has a couple of more days of rain than the previous month and rainy days continue to rise slightly into September. The average total rainfall in Tomales Bay in August is 0cm (0inches) and on average there are 0.7 rainy days in August making it an extremely dry time to visit the beach.

Humidity in Tomales Bay in August

The maximum dew point (an indicator of humidity) in Tomales Bay in August is 15°C (59°F) which is comfortable for everyone. The dew point is 14°C (58°F) in the previous month and 14°C (14°F) in the next month.

The average maximum relative humidity in Tomales Bay in August is typically 99%. The maximum relative humidity is 98.4% in the previous month and 98.6% in the next month.

The average relative humidity in Tomales Bay in August is typically 81.1%. The average relative humidity is 76.7% in the previous month and 77.4% in the next month.

Wind Speed in Tomales Bay in August

The average maximum wind speed in Tomales Bay in August is typically 21KM/H (13MPH). The average maximum wind speed is 22KM/H (14MPH) in the previous month and 23KM/H (14MPH) in the next month.

The average wind speed in Tomales Bay in August is typically 7KM/H (4MPH). The average wind speed is 8KM/H (5MPH) in the previous month and 8KM/H (5MPH) in the next month.

The average wind direction in Tomales Bay in August is from the West-Northwest.

Monthly Averages

Suggested Beaches in August

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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.