Weather in Maine, United States in May

So you're interested in going to Maine, United States in May

May is a slightly cold and rainy time for sunbathing in Maine. May is too cold for swimming in Maine for any length of time, unless you have a wetsuit. 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.

Temperature in Maine in May

The average maximum temperature in Maine in May is 18°. The average maximum temperature is 13° in the previous month and 23° in the next month.

The average temperature in Maine in May is 13°. The average temperature ranges is in the previous month and 18° in the next month.

The average minimum temperature in Maine in May is . The minimum temperature is in the previous month and 13° in the next month.

Sunshine in Maine in May

The average day light hours per day in Maine in May are 14.7 and there are 6.3 hours of sunshine per day on average during May making it a quite sunny month with some cloud cover.

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° which is extremely cold and not suitable for swimming. Taking a dip at this temperature would risk hypothermia.

Rainfall in Maine in May

The average total rainfall in Maine in May is 99.8cm and on average there are 14.5 rainy days in May making it a 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° which is a bit dry for some. The dew point is in the previous month and 15° 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 27kmh. The average maximum wind speed is 30kmh in the previous month and 25kmh in the next month.

The average wind speed in Maine in May is typically 11kmh. The average wind speed is 13kmh in the previous month and 10kmh in the next month.

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