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Monthly climate in Swampscott, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Swampscott features a humid continental climate (Dfb).Temperatures typically range between 0 °C (32 °F) and 22 °C (73 °F) through the year, but rarely can drop to -20 °C (-3 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 1238 mm (48.7 inches) and receives 124 rainy days on the 1 mm (0.04 inches) threshold annually.Swampscott enjoys an average of 2988 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Swampscott, Massachusetts, United States §

The warmest months in Swampscott are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (66 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (32 - 35 °F) throughout the day. On average each year, Swampscott experiences 46 days above 25 °C (77.0 °F) and 83 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Swampscott, Massachusetts, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 19°C
(67°F)		 19°C
(66°F)		 19°C
(66°F)		 26°C
(79°F)		 30°C
(87°F)		 32°C
(91°F)		 33°C
(91°F)		 32°C
(91°F)		 32°C
(90°F)		 27°C
(81°F)		 22°C
(71°F)		 16°C
(62°F)
Mean maximum 13°C
(56°F)		 16°C
(60°F)		 16°C
(62°F)		 20°C
(68°F)		 28°C
(82°F)		 29°C
(84°F)		 32°C
(89°F)		 31°C
(88°F)		 29°C
(84°F)		 24°C
(76°F)		 20°C
(69°F)		 15°C
(59°F)
Average high 3°C
(38°F)		 4°C
(40°F)		 7°C
(45°F)		 12°C
(54°F)		 17°C
(63°F)		 23°C
(73°F)		 26°C
(79°F)		 26°C
(79°F)		 22°C
(73°F)		 17°C
(63°F)		 10°C
(50°F)		 5°C
(41°F)
Daily mean -0°C
(32°F)		 1°C
(33°F)		 3°C
(38°F)		 8°C
(47°F)		 14°C
(57°F)		 19°C
(66°F)		 22°C
(73°F)		 22°C
(73°F)		 19°C
(66°F)		 13°C
(57°F)		 6°C
(44°F)		 2°C
(35°F)
Average low -4°C
(25°F)		 -3°C
(27°F)		 -1°C
(31°F)		 5°C
(41°F)		 10°C
(51°F)		 15°C
(60°F)		 19°C
(67°F)		 19°C
(67°F)		 15°C
(60°F)		 10°C
(51°F)		 3°C
(37°F)		 -2°C
(29°F)
Mean minimum -15°C
(5°F)		 -13°C
(8°F)		 -11°C
(13°F)		 -1°C
(31°F)		 5°C
(41°F)		 10°C
(51°F)		 15°C
(59°F)		 14°C
(58°F)		 10°C
(50°F)		 3°C
(38°F)		 -6°C
(22°F)		 -11°C
(13°F)
Minimum -20°C
(-3°F)		 -16°C
(4°F)		 -14°C
(7°F)		 -2°C
(28°F)		 3°C
(37°F)		 8°C
(46°F)		 14°C
(57°F)		 13°C
(56°F)		 7°C
(45°F)		 0°C
(33°F)		 -11°C
(13°F)		 -18°C
(0°F)

Compare climate in Swampscott with other places

Compare temperature, precipitation, sunshine, UV index in Swampscott, Massachusetts, United States with other places around the world.

Monthly average precipitation in Swampscott, Massachusetts, United States §

Swampscott usually has the most precipitation in April, October and December, with an average of 11 rainy days and 139 mm (5.5 inches) of precipitation per month.The driest months in Swampscott are January, August and September. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Swampscott, Massachusetts, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 77 (3.0) 96 (3.8) 96 (3.8) 141 (5.6) 91 (3.6) 87 (3.4) 116 (4.6) 72 (2.8) 84 (3.3) 146 (5.8) 101 (4.0) 129 (5.1)
Average precipitation days (≥ 1 mm) 9 11 10 13 11 10 11 10 8 11 10 10

Monthly sunshine hours in Swampscott, Massachusetts, United States §

The sunniest months in Swampscott are June, July and August, when the sun shines an average of 10 hours 44 minutes a day.Least sunny months in Swampscott: January, February and December receive an average of 5 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Swampscott, Massachusetts, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 152 187 253 239 289 326 334 327 277 221 200 178
Mean daily daylight hours 9h 26m 10h 33m 11h 57m 13h 24m 14h 38m 15h 14m 14h 54m 13h 49m 12h 26m 10h 59m 9h 44m 9h 5m

Solar UV radiation in Swampscott, Massachusetts, United States §

Swampscott experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Swampscott UV Index data.

Average daily maximum UV levels by month for Swampscott, Massachusetts, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 5 8 9 10 9 9 7 6 4 2