Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September brings a small shift in high-temperatures, falling from a pleasant 73°F (22.8°C) in August to an enjoyable 67.3°F (19.6°C). The month of September is marked by an average minimum temperature of 59.9°F (15.5°C), slightly cooler than its daytime counterpart.Humidity
In Gloucester, the average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall in Gloucester. Rain falls for 11.9 days and accumulates 1.73" (44mm) of precipitation.Snowfall
May through October are months without snowfall.Ocean temperature
In Gloucester, Massachusetts, the average seawater temperature in September is 62.6°F (17°C).Note: Swimming is not an enjoyable activity for the majority when the water is at 62.6°F (17°C). The difficulty of controlling breathing increases as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Gloucester, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:16 pm. On the last day of September, in Gloucester, sunrise is at 6:39 am and sunset at 6:25 pm EDT.
Sunshine
In Gloucester, Massachusetts, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Gloucester is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
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. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What is the temperature in September in Gloucester?
What is the average humidity in September in Gloucester?
What is the driest month in Gloucester?
How much does it rain in Gloucester in September?
When it does not snow in Gloucester?
What is the ocean temperature in September in Gloucester?
What is the average length of the day in September in Gloucester?
When is the sunrise / sunset in September in Gloucester?
How long on average sun shines in September in Gloucester?
How high is the UV index in September in Gloucester?
Average temperature in September
Gloucester, MA
- Average high temperature in September: 67.3°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Gloucester, MA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Gloucester, MA
- Average wind speed in September: 10.2mph
The windiest month (with the highest average wind speed) is January (15.2mph).
The calmest months (with the lowest average wind speed) are July and August (8.9mph).
Average humidity in September
Gloucester, MA
- Average humidity in September: 78%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in September
Gloucester, MA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is December (3.23").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Gloucester, MA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in September
Gloucester, MA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Gloucester, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in September
Gloucester, MA
- Average sea temperature in September: 62.7°F
The best month for swimming (with the highest average sea temperature) is August (66.4°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in September /
Average sunshine in September
Gloucester, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Gloucester, MA
- Average sunshine days in September: 16.7 days
The months with the most sunshine days are September and November (16.7 days).
The month with the least sunshine days is February (13.1 days).
Average UV index in September
Gloucester, MA
- Average UV index in September: 4
The months with the highest UV index are 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
Gloucester, MA
- Average cloud cover in September: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Gloucester, 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).
Gloucester, Massachusetts, USA
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