September weather forecastNew Bedford, MA
September
Weather in September
September marks the subtle arrival of fall in New Bedford. Temperatures begin to drop, with average highs lowering to a more moderate 71.2°F (21.8°C). The decreasing temperatures signal the transition from summer to fall, bringing an assortment of beautiful leaf colors across the city. The daylight hours and sunshine duration gradually lessen, giving way to slightly longer evenings. Despite the climate change, the relative humidity maintains a similar level, leading to cooler yet somewhat moist conditions.Temperature
September's onset in New Bedford introduces a mild reduction in the average high-temperature, from a moderately hot 78.3°F (25.7°C) in August to an agreeable 71.2°F (21.8°C). The nighttime temperature dips to a refreshing 59.7°F (15.4°C) on average during September.Humidity
In New Bedford, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 1.06" (27mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In September, the average ocean temperature is 65.8°F (18.8°C).Note: Swimming is not a pleasant activity for most individuals in 65.8°F (18.8°C). Breathing becomes increasingly challenging to control as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In New Bedford, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:26 pm EDT.
Sunshine
In September, the average sunshine in New Bedford is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
New Bedford, MA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in September
New Bedford, MA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
New Bedford, MA
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in September
New Bedford, MA
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are March, April and November (74%).
Average rainfall in September
New Bedford, MA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is September (1.06").
Average rainfall days in September
New Bedford, MA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in September
New Bedford, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
New Bedford, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in September
New Bedford, MA
- Average sea temperature in September: 65.8°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in September /
Average sunshine in September
New Bedford, MA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
New Bedford, MA
- Average sunshine days in September: 16.7 days
The months with the most sunshine days are November and December (18.3 days).
The month with the least sunshine days is April (14.4 days).
Average UV index in September
New Bedford, MA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
New Bedford, MA
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
New Bedford, MA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
