Climate and monthly weather forecastSouth Wellfleet, MA
Climate and monthly weather forecast
Weather in January
January, like December, in South Wellfleet, Massachusetts, is another cold winter month, with an average temperature ranging between min 31.6°F (-0.2°C) and max 38.7°F (3.7°C). January is South Wellfleet's coldest month, registering average high temperatures of 38.7°F (3.7°C) and lows of 31.6°F (-0.2°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in South Wellfleet, Massachusetts, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 38.8°F (3.8°C). The advent of February brings an average high-temperature of a still wintry 38.8°F (3.8°C), almost identical to the preceding month. Weather in February »Weather in March
March, the first month of the spring in South Wellfleet, is also a wintry month, with an average temperature fluctuating between 35.2°F (1.8°C) and 41°F (5°C). As South Wellfleet welcomes March, the average high-temperature is noted at a still icy 41°F (5°C), closely aligning with the preceding month. Weather in March »Weather in April
April is a chilly spring month in South Wellfleet, Massachusetts, with an average temperature fluctuating between 46.8°F (8.2°C) and 42.3°F (5.7°C). April comes with a subtle rise, with the average high-temperature adjusting from a cold 41°F (5°C) in March to a frosty 46.8°F (8.2°C). Weather in April »Weather in May
The last month of the spring, May, is a cool month in South Wellfleet, Massachusetts, with an average temperature varying between 54.3°F (12.4°C) and 49.8°F (9.9°C). May brings a slight elevation in the average high-temperature, transitioning from April's frosty 46.8°F (8.2°C) to a fresh 54.3°F (12.4°C). Weather in May »Weather in June
June, the first month of the summer in South Wellfleet, is a refreshing month, with an average temperature ranging between max 62.4°F (16.9°C) and min 58.6°F (14.8°C). Entering June, South Wellfleet notices a subtle temperature elevation, with the average high-temperature advancing from May's fresh 54.3°F (12.4°C) to a refreshing 62.4°F (16.9°C). Weather in June »Weather in July
July is a pleasant summer month in South Wellfleet, Massachusetts, with an average temperature fluctuating between 66.9°F (19.4°C) and 70.3°F (21.3°C). As July sets, the average high-temperature shows a slight increase, moving up from a refreshing 62.4°F (16.9°C) in June to an agreeable 70.3°F (21.3°C). Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in South Wellfleet, Massachusetts, with an average temperature fluctuating between 71.1°F (21.7°C) and 67.6°F (19.8°C). August is the warmest month, exhibiting average temperatures of 71.1°F (21.7°C) at the peak and 67.6°F (19.8°C) at the base. Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in South Wellfleet, Massachusetts, with an average temperature varying between 66.4°F (19.1°C) and 62.4°F (16.9°C). September begins with an average high-temperature of a refreshing 66.4°F (19.1°C), reflecting close similarity to the preceding month. Weather in September »Weather in October
October, like September, is another refreshing autumn month in South Wellfleet, Massachusetts, with an average temperature varying between 54.7°F (12.6°C) and 59.2°F (15.1°C). As September transitions into October, South Wellfleet sees a gentle drop in the average high-temperature, transitioning from a refreshing 66.4°F (19.1°C) to a mild 59.2°F (15.1°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in South Wellfleet, Massachusetts, with an average temperature fluctuating between 50.9°F (10.5°C) and 45.5°F (7.5°C). South Wellfleet's transition into November involves a gentle shift in temperature, receding from a mild 59.2°F (15.1°C) in October to a cool 50.9°F (10.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in South Wellfleet, Massachusetts, with an average temperature fluctuating between 37.4°F (3°C) and 43.9°F (6.6°C). Transitioning from November to December involves a subtle drop in average high-temperatures, descending from a cool 50.9°F (10.5°C) to a frosty 43.9°F (6.6°C). Weather in December »Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with its average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 31.6°F (-0.2°C), holds the record as the coldest month.
Throughout the year, there are 136.1 rainfall days, and 17.24" (438mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
Throughout the year, there are 22.1 snowfall days, and 2.95" (75mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the least rainfall are February and November Rain falls for 7.3 days and accumulates 1.18" (30mm) of rain.
The month with the most snowfall is February, when snow falls for 5.2 days and typically aggregates up to 0.94" (24mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through October are months without snowfall.
June has the longest days of the year, with an average of 15h and 12min of daylight.
The most humid month in South Wellfleet is July, with an average relative humidity of 85%.
The months with the highest UV index are July and August, with an average maximum UV index of 6.
The month of August, characterized by an average high of 71.1°F (21.7°C) and a low of 67.6°F (19.8°C), is recognized as the warmest.
With an average of 10.6h of sunshine, August has the most sunshine of the year.
The month with the most rainfall is October, when the rain falls for 12.5 days and typically aggregates up to 2.17" (55mm) of precipitation.
The least humid month is November, with an average relative humidity of 74%.
December has the shortest days of the year, with an average of 9h and 12min of daylight.
The month with the least sunshine is December, with an average of 4.2h of sunshine.
Average temperature
South Wellfleet, MA
The warmest month (with the highest average high temperature) is August (71.1°F).
The month with the lowest average high temperature is January (38.7°F).
The month with the highest average low temperature is August (67.6°F).
The coldest months (with the lowest average low temperature) are January and February (31.6°F).
Average pressure
South Wellfleet, MA
- Average pressure in January:
29.99"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.02"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
South Wellfleet, MA
- Average wind speed in January:
18.5mph - Average wind speed in February:
18mph - Average wind speed in March:
17.8mph - Average wind speed in April:
15.3mph - Average wind speed in May:
13.2mph - Average wind speed in June:
12.5mph
- Average wind speed in July:
11.6mph - Average wind speed in August:
11.6mph - Average wind speed in September:
13.5mph - Average wind speed in October:
15.7mph - Average wind speed in November:
17.2mph - Average wind speed in December:
18mph
The windiest month (with the highest average wind speed) is January (18.5mph).
The calmest months (with the lowest average wind speed) are July and August (11.6mph).
Average humidity
South Wellfleet, MA
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall
South Wellfleet, MA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.18" - Average rainfall in March:
1.34" - Average rainfall in April:
1.5" - Average rainfall in May:
1.42" - Average rainfall in June:
1.38"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.26" - Average rainfall in September:
1.42" - Average rainfall in October:
2.17" - Average rainfall in November:
1.18" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is October (2.17").
The driest months (with the least rainfall) are February and November (1.18").
Average rainfall days
South Wellfleet, MA
- Average rainfall days in January:
8.9 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
11.5 days - Average rainfall days in September:
10 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
10.6 days - Average rainfall days in December:
11.7 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (7.3 days).
Average snowfall
South Wellfleet, MA
The month with the highest snowfall is February (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
South Wellfleet, MA
- Average snowfall days in January:
6.1 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
4.7 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
South Wellfleet, MA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 36min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days
South Wellfleet, MA
- Average sunshine days in January:
13.3 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
15 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
16.4 days - Average sunshine days in August:
18.2 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
16.2 days - Average sunshine days in November:
15.5 days - Average sunshine days in December:
13.1 days
The month with the most sunshine days is August (18.2 days).
The month with the least sunshine days is December (13.1 days).
Average UV index
South Wellfleet, MA
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
South Wellfleet, MA
The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
South Wellfleet, MA
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).
