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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 73.8°F (23.2°C) in August to a pleasant 68.2°F (20.1°C). Recording a slight decline in temperature during the nights, Vineyard Haven's September temperatures average at a refreshing 63.5°F (17.5°C).Humidity
In September, the average relative humidity in Vineyard Haven is 78%.Rainfall
In Vineyard Haven, in September, it is raining for 5.9 days, with typically 0.47" (12mm) of accumulated precipitation. In Vineyard Haven, during the entire year, the rain falls for 89.3 days and collects up to 6.14" (156mm) of precipitation.Snowfall
April through November are months without snowfall.Ocean temperature
In Vineyard Haven, the average seawater temperature in September is 66.4°F (19.1°C).Note: For the majority, swimming in water with a temperature of 66.4°F (19.1°C) is not enjoyable. The difficulty in managing breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In September, the average length of the day in Vineyard Haven, Massachusetts, is 12h and 28min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:15 pm. On the last day of September, in Vineyard Haven, sunrise is at 6:38 am and sunset at 6:25 pm EDT.
Sunshine
In September, the average sunshine in Vineyard Haven, Massachusetts, is 8.6h.UV index
The average daily maximum UV index in September in Vineyard Haven is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the usual temperature for Vineyard Haven in September?
What is the average humidity in September in Vineyard Haven?
How many days does it rain in September in Vineyard Haven?
When it does not snow in Vineyard Haven?
What is the ocean temperature in September in Vineyard Haven?
How many hours of daylight does Vineyard Haven have in September?
When is the sunrise / sunset in September in Vineyard Haven?
How long on average sun shines in September in Vineyard Haven?
How high is the UV index in September in Vineyard Haven?
Average temperature in September
Vineyard Haven, MA
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is August (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in September
Vineyard Haven, 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 (29.93"Hg).
Average wind speed in September
Vineyard Haven, MA
- Average wind speed in September: 12.4mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.7mph).
Average humidity in September
Vineyard Haven, MA
- Average humidity in September: 78%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).
Average rainfall in September
Vineyard Haven, MA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Vineyard Haven, MA
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is July (9.1 days).
The months with the least rainy days are September and November (5.9 days).
Average snowfall in September
Vineyard Haven, MA
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Vineyard Haven, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Vineyard Haven, MA
- Average sea temperature in September: 66.4°F
The best month for swimming (with the highest average sea temperature) is August (68.5°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).
Average daylight in September /
Average sunshine in September
Vineyard Haven, MA
- Average daylight in September: 12h and 3min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Vineyard Haven, MA
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is February (18.5 days).
Average UV index in September
Vineyard Haven, MA
- Average UV index in September: 5
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
Vineyard Haven, MA
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Vineyard Haven, 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).
Vineyard Haven, Massachusetts, USA
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