Weather in Massachusetts, United States in September

So you're interested in going to Massachusetts, United States in September

September is a warm and slightly rainy time for sunbathing in Massachusetts. September is a good month for swimming in Massachusetts with warm sea temperatures. Consider visiting Massachusetts in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Massachusetts in September

The average maximum temperature in Massachusetts in September is 22°. The average maximum temperature is 26° in the previous month and 17° in the next month.

The average temperature in Massachusetts in September is 18°. The average temperature ranges is 21° in the previous month and 13° in the next month.

The average minimum temperature in Massachusetts in September is 14°. The minimum temperature is 17° in the previous month and in the next month.

Sunshine in Massachusetts in September

The average day light hours per day in Massachusetts in September are 12.5 and there are 6 hours of sunshine per day on average during September making it a sunny month that is overcast at times.

The ultraviolet index in Massachusetts in September is typically 6.3 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.

Sea Temperature in Massachusetts in September

The average sea water temperature in Massachusetts in September is 20.2° which is comfortable for swimming though some may prefer warmer water.

Rainfall in Massachusetts in September

The average total rainfall in Massachusetts in September is 9.5cm and on average there are 12.5 rainy days in September making it a slightly wet time to visit the beach.

Humidity in Massachusetts in September

The maximum dew point (an indicator of humidity) in Massachusetts in September is 17° which is OK for most but slightly uncomfortable for some. The dew point is 19° in the previous month and 12° in the next month.

The average maximum relative humidity in Massachusetts in September is typically 93.3%. The maximum relative humidity is 94.2% in the previous month and 91% in the next month.

The average relative humidity in Massachusetts in September is typically 78.7%. The average relative humidity is 80.1% in the previous month and 76.7% in the next month.

Wind Speed in Massachusetts in September

The average maximum wind speed in Massachusetts in September is typically 22kmh. The average maximum wind speed is 20kmh in the previous month and 24kmh in the next month.

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

The average wind direction in Massachusetts in September is from the West-Southwest.

Monthly Averages

Suggested Beaches in September

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