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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in South Yarmouth, Massachusetts, is another cold winter month, with temperature in the range of an average high of 38.5°F (3.6°C) and an average low of 30.6°F (-0.8°C). With average high temperatures of 38.5°F (3.6°C) and lows of 30.6°F (-0.8°C), January is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in South Yarmouth, is also a wintry month, with an average temperature varying between 31.1°F (-0.5°C) and 38.8°F (3.8°C). Shifting into February, South Yarmouth records an average high-temperature of a still wintry 38.8°F (3.8°C), presenting minor fluctuations compared to the previous month. Weather in February »
Weather in March
The first month of the spring, March, is also a wintry month in South Yarmouth, Massachusetts, with an average temperature varying between 35.6°F (2°C) and 41.4°F (5.2°C). The onset of March marks an average high-temperature of a still cold 41.4°F (5.2°C), hardly differing from February's 38.8°F (3.8°C). Weather in March »
Weather in April
April is a chilly spring month in South Yarmouth, Massachusetts, with an average temperature ranging between min 42.4°F (5.8°C) and max 47.1°F (8.4°C). South Yarmouth in April experiences a slight uptick in the average high-temperature, adjusting from March's wintry 41.4°F (5.2°C) to a frosty 47.1°F (8.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a fresh month in South Yarmouth, Massachusetts, with an average temperature fluctuating between 55°F (12.8°C) and 51.3°F (10.7°C). As May begins, there's a slight increase in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in April to a cool 55°F (12.8°C). Weather in May »
Weather in June
June, the first month of the summer in South Yarmouth, is an enjoyable month, with an average temperature ranging between max 63.5°F (17.5°C) and min 59.4°F (15.2°C). June brings a slight elevation in the average high-temperature, transitioning from May's cool 55°F (12.8°C) to a comfortable 63.5°F (17.5°C). Weather in June »
Weather in July
July is a pleasant summer month in South Yarmouth, Massachusetts, with an average temperature fluctuating between 67.6°F (19.8°C) and 71.6°F (22°C). The start of July is characterized by a subtle increase in the average high-temperature, transitioning from a comfortable 63.5°F (17.5°C) in June to an agreeable 71.6°F (22°C). Weather in July »
Weather in August
August, the last month of the summer in South Yarmouth, is another pleasant month, with an average temperature fluctuating between 72.1°F (22.3°C) and 68.5°F (20.3°C). The warmest period tends to be August, when average temperatures fluctuate between a high of 72.1°F (22.3°C) and a low of 68.5°F (20.3°C). Weather in August »
Weather in September
September, the first month of the autumn in South Yarmouth, is still a refreshing month, with an average temperature fluctuating between 67.1°F (19.5°C) and 63°F (17.2°C). The unfolding of September shows an average high-temperature of a refreshing 67.1°F (19.5°C), indicating a slight variance from August's 72.1°F (22.3°C). Weather in September »
Weather in October
October, the same as September, in South Yarmouth, Massachusetts, is a moderate autumn month, with an average temperature fluctuating between 59.9°F (15.5°C) and 54.7°F (12.6°C). The onset of October results in a small decrease in the average high-temperature, moderately receding from a comfortable 67.1°F (19.5°C) in September to a moderate 59.9°F (15.5°C). Weather in October »
Weather in November
November, the last month of the autumn in South Yarmouth, is another cool month, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 51.3°F (10.7°C). The transition into November subtly indicates a reduction in the average high-temperature, down to a fresh 51.3°F (10.7°C) from October's mild 59.9°F (15.5°C). Weather in November »
Weather in December
December, the first month of the winter in South Yarmouth, is also a frosty month, with an average temperature ranging between min 36.9°F (2.7°C) and max 43.7°F (6.5°C). As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a fresh 51.3°F (10.7°C) to a chilly 43.7°F (6.5°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
What is the coldest time of year?
January is the coldest month, exhibiting average temperatures of 38.5°F (3.6°C) at the peak and 30.6°F (-0.8°C) at the base.
How much does it rain?
Throughout the year, there are 129 rainfall days, and 14.21" (361mm) of precipitation is accumulated.
When does it snow?
January through April and December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 6.4 days and typically aggregates up to 0.87" (22mm) of snow.
How much does it snow?
Throughout the year, there are 20.8 snowfall days, and 2.6" (66mm) of snow is accumulated.
What are the months with the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What are the months with the least sunshine?
The months with the least sunshine are February and December, with an average of 4.6h of sunshine.
When is the ocean coldest?
With an average ocean temperature of 39°F (3.9°C), March is the month with the coldest seawater.
When is Daylight Saving Time (DST)?
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.
When it does not snow?
May through November are months without snowfall.
What is the most humid month?
June and July, with an average relative humidity of 84%, are most humid months.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What are the months with the highest UV index?
July and August, with an average maximum UV index of 6, are months with the highest UV index.
What are the warmest months?
In South Yarmouth, the average highest temperatures are observed in August, with a high of 72.1°F (22.3°C) and a low of 68.5°F (20.3°C).
What is the driest month?
August is the month with the least rainfall in South Yarmouth. Rain falls for 11.2 days and accumulates 0.94" (24mm) of precipitation.
When is the ocean warmest?
The month with the warmest seawater in South Yarmouth is August, with an average ocean temperature of 67.5°F (19.7°C).
What month has the most sunshine?
The month with the most sunshine in South Yarmouth is August, with an average of 10.8h of sunshine.
What is the rainiest month?
October is the month with the most rainfall. Rain falls for 11.6 days and accumulates 1.93" (49mm) of precipitation.
What is the least humid month?
The least humid month is November, with an average relative humidity of 74%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
South Yarmouth, MA
The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).
The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).
Average pressure
South Yarmouth, MA
- Average pressure in January:
30"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:
29.96"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:
30.03"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 Yarmouth, MA
- Average wind speed in January:
16.8mph - Average wind speed in February:
16.3mph - Average wind speed in March:
16.5mph - Average wind speed in April:
14.4mph - Average wind speed in May:
12.5mph - Average wind speed in June:
11.7mph
- Average wind speed in July:
10.9mph - Average wind speed in August:
10.9mph - Average wind speed in September:
12.8mph - Average wind speed in October:
14.8mph - Average wind speed in November:
16mph - Average wind speed in December:
16.4mph
The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).
Average humidity
South Yarmouth, MA
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).
Average rainfall
South Yarmouth, MA
- Average rainfall in January:
1.06" - Average rainfall in February:
1.02" - Average rainfall in March:
1.06" - Average rainfall in April:
1.34" - Average rainfall in May:
1.14" - Average rainfall in June:
1.14"
- Average rainfall in July:
1.02" - Average rainfall in August:
0.94" - Average rainfall in September:
1.18" - Average rainfall in October:
1.93" - Average rainfall in November:
0.98" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").
Average rainfall days
South Yarmouth, MA
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
12.5 days - Average rainfall days in June:
11.2 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
11.2 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
11 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).
Average snowfall
South Yarmouth, MA
The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days
South Yarmouth, MA
- Average snowfall days in January:
6.4 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.4 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:
0.6 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature
South Yarmouth, MA
The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).
Average daylight / Average sunshine
South Yarmouth, MA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
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 5min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h 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 36min).
Average sunshine days
South Yarmouth, MA
- Average sunshine days in January:
15.4 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
16.4 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
17.6 days - Average sunshine days in August:
18.3 days - Average sunshine days in September:
18.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
15.3 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).
Average UV index
South Yarmouth, 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 Yarmouth, MA
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
South Yarmouth, 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).
South Yarmouth, Massachusetts, USA
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