Weather in Maine, United States in May

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Visiting Maine, United States in May

The weather in May is significantly warmer than the previous month and temperatures continue to rise at a fast pace into June. May has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.3 hours of sunshine per day. It is not a good time for sunbathing in Maine.

May has total rainfall of 10.8cm (4.3inches) making it often dry with only moderate showers. There are only 14.5 days with some rainfall so you can still enjoy the beach on the many clear days.

Sea temperatures are a cold 8°C (46°F). May is too cold for swimming in Maine for any length of time, unless you have a wetsuit. The sea temperature in May is much warmer than the previous month and temperatures continue to rise at a fast pace into June.

Consider visiting Maine 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 Maine in May?

No, May is not a good time for sunbathing in Maine.

May has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.3 hours of sunshine per day. May has total rainfall of 10.8cm (4.3inches) making it often dry with only moderate showers. There are only 14.5 days with some rainfall so you can still enjoy the beach on the many clear days.

More about May temperature and sunshine.

Can you swim in Maine in May?

No, May is too cold for swimming in Maine for any length of time, with the sea water at 8°C (46°F), unless you have a wetsuit.

More about May sea temperatures.

Is May a good time to holiday in Maine?

Yes, May is a slightly cool time for a holiday in Maine.

May has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 43% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.3 hours of sunshine per day. May has total rainfall of 10.8cm (4.3inches) making it often dry with only moderate showers. There are only 14.5 days with some rainfall so you can still enjoy the beach on the many clear days. It is not a good time for sunbathing in Maine. Sea temperatures are a cold 8°C (46°F). May is too cold for swimming in Maine for any length of time, unless you have a wetsuit.

More about the May temperatures and sunshine.

Is Maine warm in May?

No, Maine is not that warm but sunbathing may be possible on some clear days in May.

The average maximum temperature in Maine in May is 18°C (64°F). The average maximum temperature is 13°C (55°) in the previous month and 23°C (73°F) in the next month.

The average temperature in Maine in May is 13°C (55°F). The average temperature is 7°C (45°F) in the previous month and 18°C (64°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Maine in May?

The average day light hours per day in Maine in May are 14.7. The sunshine percentage is 43% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.3 hours of sunshine per day.

More about May sunshine.

Temperature in Maine in May

The weather in May is significantly warmer than the previous month and temperatures continue to rise at a fast pace into June. The average maximum temperature in Maine in May is 18°C (64°F). The average maximum temperature is 13°C (55°F) in the previous month and 23°C (73°F) in the next month.

The average temperature in Maine in May is 13°C (55°F). The average temperature is 7°C (45°F) in the previous month and 18°C (64°F) in the next month.

The average minimum temperature in Maine in May is 7°C (45°F). The minimum temperature is 2°C (35°F) in the previous month and 13°C (55°F) in the next month.

Sunshine in Maine in May

The days in May are much longer than the previous month and the days continue to get slightly longer into June. May has a slightly more hours of sunshine than the previous month. During May the average day light hours are 14.7 per day in Maine. The sunshine percentage is 43% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.3 hours of sunshine per day.

The ultraviolet index in Maine in May is typically 8.1 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 Maine in May

The average sea water temperature in Maine in May is 7.6°C (45.7°F) which is extremely cold and not suitable for swimming. Taking a dip at this temperature would risk hypothermia. The sea temperature in May is much warmer than the previous month and temperatures continue to rise at a fast pace into June.

Rainfall in Maine in May

May weather is slightly drier than the previous month. May has a few more days of rain than the previous month. The average total rainfall in Maine in May is 10.8cm (4.3inches) and on average there are 14.5 rainy days in May making it a pretty wet time to visit the beach.

Humidity in Maine in May

The maximum dew point (an indicator of humidity) in Maine in May is 10°C (49°F) which is a bit dry for some. The dew point is 4°C (38°F) in the previous month and 15°C (15°F) in the next month.

The average maximum relative humidity in Maine in May is typically 91.2%. The maximum relative humidity is 85.9% in the previous month and 93.1% in the next month.

The average relative humidity in Maine in May is typically 71.5%. The average relative humidity is 64% in the previous month and 75.1% in the next month.

Wind Speed in Maine in May

The average maximum wind speed in Maine in May is typically 27KM/H (17MPH). The average maximum wind speed is 30KM/H (18MPH) in the previous month and 25KM/H (16MPH) in the next month.

The average wind speed in Maine in May is typically 11KM/H (7MPH). The average wind speed is 13KM/H (8MPH) in the previous month and 10KM/H (6MPH) in the next month.

The average wind direction in Maine in May is from the South.

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.