Climate and monthly weather forecastSwansea, MA
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Swansea, Massachusetts, with an average temperature fluctuating between 25.2°F (-3.8°C) and 36°F (2.2°C). Swansea's January weather reaches an average high of 36°F (2.2°C) and an average low of 25.2°F (-3.8°C), making it the coldest month. Weather in January »Weather in February
February, the last month of the winter in Swansea, is also an icy month, with an average temperature varying between 26.1°F (-3.3°C) and 37.9°F (3.3°C). Swansea's weather in February, with an average high-temperature of a still cold 37.9°F (3.3°C), subtly shifts from January's 36°F (2.2°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Swansea, Massachusetts, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 43.7°F (6.5°C). With the transition into March, Swansea experiences a subtle uplift in average high-temperatures, adjusting from an icy 37.9°F (3.3°C) in February to a chilly 43.7°F (6.5°C). Weather in March »Weather in April
April is a fresh spring month in Swansea, Massachusetts, with an average temperature fluctuating between 41.5°F (5.3°C) and 54.1°F (12.3°C). With the onset of April, Swansea's average high-temperature experiences a rise, moving from March's chilly 43.7°F (6.5°C) to a fresh 54.1°F (12.3°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Swansea, Massachusetts, with an average temperature ranging between min 50.7°F (10.4°C) and max 64°F (17.8°C). As May arrives, Swansea's weather shows an increase in high-temperatures, moving from April's fresh 54.1°F (12.3°C) to a comfortable 64°F (17.8°C). Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in Swansea, Massachusetts, with an average temperature fluctuating between 58.1°F (14.5°C) and 72°F (22.2°C). June's arrival brings a slight change in high-temperatures, adjusting from an enjoyable 64°F (17.8°C) in May to a pleasant 72°F (22.2°C). Weather in June »Weather in July
July in Swansea, Massachusetts, is a warm summer month, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 79.3°F (26.3°C). Swansea's warmest month, July, generally records average temperatures ranging from a high of 79.3°F (26.3°C) to a low of 65.5°F (18.6°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Swansea, Massachusetts, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 64.9°F (18.3°C). August registers an average high-temperature of a still warm 78.6°F (25.9°C), slightly varied from July's 79.3°F (26.3°C). Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Swansea, Massachusetts, with an average temperature ranging between max 72.1°F (22.3°C) and min 58.8°F (14.9°C). September heralds a minor drop in average high-temperature, sliding from August's moderately hot 78.6°F (25.9°C) to an agreeable 72.1°F (22.3°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Swansea, Massachusetts, with an average temperature varying between 61.7°F (16.5°C) and 49.8°F (9.9°C). In Swansea, the beginning of October is marked by a lowered average high-temperature, shifting from September's pleasant 72.1°F (22.3°C) to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
November, the last month of the autumn in Swansea, is another cool month, with an average temperature varying between 50.9°F (10.5°C) and 40.1°F (4.5°C). The shift from October to November involves a decrease in the average high-temperature, dropping from a refreshing 61.7°F (16.5°C) 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 wintry month in Swansea, Massachusetts, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 42.1°F (5.6°C). Swansea in December experiences a gentle temperature dip, with average high-temperatures reducing from a fresh 50.9°F (10.5°C) in November to a cold 42.1°F (5.6°C). Weather in December »Updated: Aug 21, 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
The lowest temperatures are recorded in January, with averages reaching a high of 36°F (2.2°C) and a low of 25.2°F (-3.8°C).
In Swansea, during the entire year, the rain falls for 135.4 days and collects up to 18.31" (465mm) of precipitation.
Months with snowfall are January through May, November and December.
In Swansea, Massachusetts, during the entire year, snow falls for 21.2 days and aggregates up to 7.17" (182mm) of snow.
The months with the lowest UV index are January through March and December, with an average maximum UV index of 2.
February and December, with an average of 4.9h of sunshine, are months with the least sunshine.
March is the month with the most snowfall. Snow falls for 5.2 days and accumulates 2.13" (54mm) 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.
With an average relative humidity of 73%, April is the least humid month.
The most humid month is June, with an average relative humidity of 80%.
In Swansea, snow does not fall in June through October.
With an average of 15h and 12min of daylight, June has the longest days of the year.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July, with an average high of 79.3°F (26.3°C) and a low of 65.5°F (18.6°C), signifies the warmest month of the year in Swansea.
The month with the most sunshine is August, with an average of 10.6h of sunshine.
The month with the least rainfall in Swansea is September, when the rain falls for 11.2 days and typically collects 1.06" (27mm) of precipitation.
October is the month with the most rainfall. Rain falls for 11.5 days and accumulates 1.97" (50mm) of precipitation.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Swansea, MA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure
Swansea, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"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:
30.07"Hg - Average pressure in December:
30.03"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
Swansea, MA
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.9mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.2mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10mph - Average wind speed in December:
10.3mph
The windiest months (with the highest average wind speed) are January, February and March (10.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity
Swansea, MA
The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Swansea, MA
- Average rainfall in January:
1.46" - Average rainfall in February:
1.14" - Average rainfall in March:
1.61" - Average rainfall in April:
1.85" - Average rainfall in May:
1.34" - Average rainfall in June:
1.77"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.5" - Average rainfall in September:
1.06" - Average rainfall in October:
1.97" - Average rainfall in November:
1.26" - Average rainfall in December:
1.73"
The wettest month (with the highest rainfall) is October (1.97").
The driest month (with the least rainfall) is September (1.06").
Average rainfall days
Swansea, MA
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
11 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
11.2 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is February (6.9 days).
Average snowfall
Swansea, MA
- Average snowfall in January:
1.61" - Average snowfall in February:
1.02" - Average snowfall in March:
2.13" - Average snowfall in April:
0.51" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Swansea, MA
- Average snowfall days in January:
5.9 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
0.9 days - Average snowfall days in May:
0.2 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:
0.9 days - Average snowfall days in December:
3.3 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Swansea, MA
- Average daylight in January:
9h and 36min - 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:
5h and 12min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 36min - 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 48min - Average sunshine in October:
6h and 24min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days
Swansea, MA
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
16.1 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is April (13.6 days).
Average UV index
Swansea, MA
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 and December (UV index 2).
Average cloud cover
Swansea, MA
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Swansea, 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).
