nomadseason

Monthly climate in Southport, Connecticut, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Southport features a humid subtropical climate (Cfa). Temperatures typically range between 0 °C (33 °F) and 24 °C (76 °F) through the year, but rarely can drop to -17 °C (1 °F) or can rise to as high as 35 °C (94 °F). The average annual precipitation amounts to about 1366 mm (53.8 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually. Southport enjoys an average of 3001 hours of sunshine throughout the year, and daylight varies from 9 hours 14 minutes to 15 hours 5 minutes per day.

Monthly average temperatures in Southport, Connecticut, United States §

The warmest months in Southport are June, July and August, with daily mean temperatures ranging from 20 to 24 °C (69 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 37 °F) throughout the day. On average each year, Southport experiences 64 days above 25 °C (77.0 °F) and 71 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Southport, Connecticut, 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 17°C
(63°F)		 19°C
(67°F)		 23°C
(73°F)		 25°C
(78°F)		 30°C
(86°F)		 33°C
(92°F)		 35°C
(94°F)		 34°C
(93°F)		 33°C
(91°F)		 32°C
(90°F)		 23°C
(73°F)		 16°C
(61°F)
Mean maximum 13°C
(55°F)		 15°C
(59°F)		 18°C
(64°F)		 21°C
(70°F)		 28°C
(83°F)		 31°C
(89°F)		 34°C
(93°F)		 32°C
(90°F)		 30°C
(86°F)		 26°C
(79°F)		 20°C
(69°F)		 14°C
(58°F)
Average high 3°C
(38°F)		 5°C
(41°F)		 8°C
(46°F)		 13°C
(56°F)		 19°C
(66°F)		 24°C
(76°F)		 28°C
(82°F)		 27°C
(81°F)		 24°C
(75°F)		 18°C
(65°F)		 11°C
(52°F)		 6°C
(42°F)
Daily mean 0°C
(33°F)		 1°C
(35°F)		 4°C
(40°F)		 9°C
(49°F)		 15°C
(59°F)		 20°C
(69°F)		 24°C
(76°F)		 23°C
(74°F)		 20°C
(68°F)		 15°C
(59°F)		 7°C
(46°F)		 3°C
(37°F)
Average low -3°C
(27°F)		 -2°C
(29°F)		 1°C
(33°F)		 6°C
(43°F)		 11°C
(52°F)		 17°C
(62°F)		 21°C
(70°F)		 20°C
(69°F)		 17°C
(62°F)		 12°C
(53°F)		 4°C
(39°F)		 -0°C
(32°F)
Mean minimum -14°C
(8°F)		 -12°C
(11°F)		 -7°C
(19°F)		 0°C
(33°F)		 5°C
(41°F)		 12°C
(54°F)		 17°C
(62°F)		 15°C
(60°F)		 10°C
(51°F)		 4°C
(40°F)		 -5°C
(24°F)		 -8°C
(18°F)
Minimum -17°C
(1°F)		 -17°C
(2°F)		 -11°C
(13°F)		 -2°C
(29°F)		 2°C
(35°F)		 9°C
(49°F)		 15°C
(60°F)		 14°C
(57°F)		 8°C
(47°F)		 2°C
(36°F)		 -10°C
(15°F)		 -13°C
(10°F)

Compare climate in Southport with other places

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

Monthly average precipitation in Southport, Connecticut, United States §

Southport usually has the most precipitation in April, October and December, with an average of 12 rainy days and 141 mm (5.5 inches) of precipitation per month. The driest months in Southport are January, March and June. On average, 91 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Southport, Connecticut, 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) 114 (4.5) 99 (3.9) 135 (5.3) 119 (4.7) 95 (3.7) 132 (5.2) 102 (4.0) 105 (4.1) 152 (6.0) 100 (4.0) 135 (5.3)
Average precipitation days (≥ 1 mm) 8 11 10 12 13 11 13 12 10 13 10 11

Monthly sunshine hours in Southport, Connecticut, United States §

The sunniest months in Southport are June, July and August, when the sun shines an average of 10 hours 42 minutes a day. Least sunny months in Southport: January, February and December receive an average of 5 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Southport, Connecticut, 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 154 180 258 246 285 318 343 322 282 224 210 176
Mean daily daylight hours 9h 34m 10h 37m 11h 58m 13h 20m 14h 30m 15h 5m 14h 46m 13h 44m 12h 24m 11h 2m 9h 51m 9h 14m

Solar UV radiation in Southport, Connecticut, United States §

Southport 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 Southport UV Index data.

Average daily maximum UV levels by month for Southport, Connecticut, 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 6 8 10 10 9 9 8 6 4 2

Detailed Monthly Weather Insights for Southport, Connecticut, United States

Discover in-depth weather details for every month in Southport. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Southport's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.