Weather in Half Moon Bay, United States in May

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Visiting Half Moon Bay, United States in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. May has average maximum temperatures of 15°C (59°F) which is a little too chilly for sunbathing. 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 not a good time for sunbathing in Half Moon Bay.

May has total rainfall of 0.7cm (0.3inches) making it predominantly dry with occasional light showers on very few days. There are just 5.5 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.

Sea temperatures are a cold 17°C (62°F). May is too cold for swimming in Half Moon Bay 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 Half Moon Bay 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 Half Moon Bay in May?

No, May is not a good time for sunbathing in Half Moon Bay.

May has average maximum temperatures of 15°C (59°F) which is a little too chilly for sunbathing. 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 predominantly dry with occasional light showers on very few days. There are just 5.5 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.

More about May temperature and sunshine.

Can you swim in Half Moon Bay in May?

No, May is too cold for swimming in Half Moon Bay for any length of time, with the sea water at 17°C (62°F), unless you have a wetsuit.

More about May sea temperatures.

Is May a good time to holiday in Half Moon Bay?

No, May is not a good time for a holiday in Half Moon Bay.

May has average maximum temperatures of 15°C (59°F) which is a little too chilly for sunbathing. 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 predominantly dry with occasional light showers on very few days. There are just 5.5 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days. It is not a good time for sunbathing in Half Moon Bay. Sea temperatures are a cold 17°C (62°F). May is too cold for swimming in Half Moon Bay for any length of time, unless you have a wetsuit.

More about the May temperatures and sunshine.

Is Half Moon Bay warm in May?

No, Half Moon Bay is a little too chilly for sunbathing in May.

The average maximum temperature in Half Moon Bay in May is 15°C (59°F). The average maximum temperature is 14°C (58°) in the previous month and 16°C (60°F) in the next month.

The average temperature in Half Moon Bay in May is 12°C (53°F). The average temperature is 11°C (52°F) in the previous month and 13°C (55°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Half Moon Bay in May?

The average day light hours per day in Half Moon Bay 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 Half Moon Bay in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. The average maximum temperature in Half Moon Bay in May is 15°C (59°F). The average maximum temperature is 14°C (58°F) in the previous month and 16°C (60°F) in the next month.

The average temperature in Half Moon Bay in May is 12°C (53°F). The average temperature is 11°C (52°F) in the previous month and 13°C (55°F) in the next month.

The average minimum temperature in Half Moon Bay in May is 9°C (48°F). The minimum temperature is 8°C (46°F) in the previous month and 10°C (50°F) in the next month.

Sunshine in Half Moon Bay in May

The days in May are longer than the previous month and the days continue to get marginally 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 Half Moon Bay. 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 Half Moon Bay in May is typically 9.7 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 Half Moon Bay in May

The average sea water temperature in Half Moon Bay in May is 16.8°C (62.2°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Rainfall in Half Moon Bay in May

May weather is marginally drier than the previous month and rainfall continues to drop slightly into June. May has fewer days of rain than the previous month and rainy days continue to drop slightly into June. The average total rainfall in Half Moon Bay in May is 0.7cm (0.3inches) and on average there are 5.5 rainy days in May making it a quite rainy time to visit the beach.

Humidity in Half Moon Bay in May

The maximum dew point (an indicator of humidity) in Half Moon Bay in May is 11°C (52°F) which is very comfortable. The dew point is 10°C (51°F) in the previous month and 13°C (13°F) in the next month.

The average maximum relative humidity in Half Moon Bay in May is typically 96.3%. The maximum relative humidity is 96.9% in the previous month and 98% in the next month.

The average relative humidity in Half Moon Bay in May is typically 85%. The average relative humidity is 84.1% in the previous month and 88.9% in the next month.

Wind Speed in Half Moon Bay in May

The average maximum wind speed in Half Moon Bay in May is typically 28KM/H (18MPH). The average maximum wind speed is 29KM/H (18MPH) in the previous month and 24KM/H (15MPH) in the next month.

The average wind speed in Half Moon Bay in May is typically 14KM/H (9MPH). The average wind speed is 14KM/H (8MPH) in the previous month and 11KM/H (7MPH) in the next month.

The average wind direction in Half Moon Bay in May is from the North West.

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.