September is a warm and rainy time for sunbathing in Maine. September 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 September.
The average maximum temperature in Maine in September is 22°. The average maximum temperature is 26° in the previous month and 15° in the next month.
The average temperature in Maine in September is 16°. The average temperature ranges is 20° in the previous month and 10° in the next month.
The average minimum temperature in Maine in September is 11°. The minimum temperature is 15° in the previous month and 5° in the next month.
The average day light hours per day in Maine in September are 12.5 and there are 5.8 hours of sunshine per day on average during September making it a sunny month that is overcast at times.
The ultraviolet index in Maine in September is typically 5.9 during September. An ultraviolet index reading of 6 to 7 indicates a high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 20 minutes. Protection against skin and eye damage is needed. Tanning will be safest before 10am and after 4pm. 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.
The average sea water temperature in Maine in September is 14.5° which is cold for swimming, a full wet suit is required to spend any length of time in the sea.
The average total rainfall in Maine in September is 80.4cm and on average there are 9.9 rainy days in September making it a wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Maine in September is 14° which is comfortable for everyone. The dew point is 18° in the previous month and 9° in the next month.
The average maximum relative humidity in Maine in September is typically 94.2%. The maximum relative humidity is 94.1% in the previous month and 91.5% in the next month.
The average relative humidity in Maine in September is typically 75.1%. The average relative humidity is 74.6% in the previous month and 73.2% in the next month.
The average maximum wind speed in Maine in September is typically 24kmh. The average maximum wind speed is 25kmh in the previous month and 26kmh in the next month.
The average wind speed in Maine in September is typically 9kmh. The average wind speed is 9kmh in the previous month and 11kmh in the next month.
The average wind direction in Maine in September is from the West-Southwest.
