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Monthly climate in Harwich Center, Massachusetts, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Harwich Center features a humid subtropical climate (Cfa). Temperatures typically range between 2 °C (37 °F) and 21 °C (71 °F) through the year, but rarely can drop to -13 °C (10 °F) or can rise to as high as 26 °C (79 °F). The average annual precipitation amounts to about 1366 mm (53.8 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually. Harwich Center enjoys an average of 2992 hours of sunshine throughout the year, and daylight varies from 9 hours 10 minutes to 15 hours 9 minutes per day.

Monthly average temperatures in Harwich Center, Massachusetts, United States §

The warmest months in Harwich Center are July, August and September, with daily mean temperatures ranging from 19 to 21 °C (66 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 2 to 3 °C (37 - 38 °F) throughout the day. On average each year, Harwich Center experiences 1 days above 25 °C (77.0 °F) and 37 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Harwich Center, 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 12°C
(54°F)		 11°C
(53°F)		 12°C
(54°F)		 14°C
(57°F)		 19°C
(66°F)		 22°C
(73°F)		 26°C
(79°F)		 26°C
(78°F)		 24°C
(75°F)		 21°C
(70°F)		 18°C
(65°F)		 15°C
(60°F)
Mean maximum 11°C
(52°F)		 10°C
(50°F)		 10°C
(51°F)		 12°C
(54°F)		 17°C
(62°F)		 20°C
(69°F)		 24°C
(76°F)		 25°C
(76°F)		 23°C
(73°F)		 20°C
(69°F)		 17°C
(62°F)		 14°C
(57°F)
Average high 5°C
(40°F)		 5°C
(41°F)		 5°C
(42°F)		 8°C
(47°F)		 12°C
(54°F)		 17°C
(63°F)		 21°C
(71°F)		 22°C
(72°F)		 20°C
(68°F)		 16°C
(61°F)		 11°C
(52°F)		 7°C
(44°F)
Daily mean 2°C
(37°F)		 2°C
(37°F)		 3°C
(38°F)		 7°C
(45°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(69°F)		 21°C
(71°F)		 19°C
(66°F)		 15°C
(59°F)		 9°C
(49°F)		 5°C
(41°F)
Average low 0°C
(33°F)		 1°C
(33°F)		 2°C
(35°F)		 6°C
(43°F)		 10°C
(50°F)		 15°C
(60°F)		 20°C
(67°F)		 21°C
(69°F)		 18°C
(64°F)		 14°C
(57°F)		 7°C
(45°F)		 3°C
(37°F)
Mean minimum -9°C
(16°F)		 -8°C
(19°F)		 -6°C
(21°F)		 2°C
(36°F)		 6°C
(43°F)		 11°C
(53°F)		 17°C
(62°F)		 17°C
(63°F)		 14°C
(58°F)		 8°C
(47°F)		 -1°C
(30°F)		 -4°C
(25°F)
Minimum -13°C
(10°F)		 -11°C
(12°F)		 -8°C
(18°F)		 1°C
(33°F)		 5°C
(41°F)		 10°C
(50°F)		 16°C
(61°F)		 16°C
(61°F)		 13°C
(56°F)		 4°C
(40°F)		 -6°C
(21°F)		 -10°C
(14°F)

Compare climate in Harwich Center with other places

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

Monthly average precipitation in Harwich Center, Massachusetts, United States §

Harwich Center usually has the most precipitation in April, October and December, with an average of 12 rainy days and 146 mm (5.7 inches) of precipitation per month. The driest months in Harwich Center are June, July and August. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Harwich Center, 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) 94 (3.7) 124 (4.9) 119 (4.7) 131 (5.1) 121 (4.8) 88 (3.5) 77 (3.0) 83 (3.3) 116 (4.6) 169 (6.7) 106 (4.2) 138 (5.4)
Average precipitation days (≥ 1 mm) 10 12 11 14 12 10 8 8 10 11 10 12

Monthly sunshine hours in Harwich Center, Massachusetts, United States §

The sunniest months in Harwich Center are June, July and August, when the sun shines an average of 10 hours 51 minutes a day. Least sunny months in Harwich Center: January, February and December receive an average of 5 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Harwich Center, 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 136 179 257 243 298 324 343 331 279 237 202 159
Mean daily daylight hours 9h 31m 10h 36m 11h 58m 13h 22m 14h 33m 15h 9m 14h 49m 13h 46m 12h 25m 11h 1m 9h 48m 9h 10m

Solar UV radiation in Harwich Center, Massachusetts, United States §

Harwich Center experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, February 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 Harwich Center UV Index data.

Average daily maximum UV levels by month for Harwich Center, 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 4 6 8 9 10 10 9 8 6 4 2

Detailed Monthly Weather Insights for Harwich Center, Massachusetts, United States

Discover in-depth weather details for every month in Harwich Center. 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 Harwich Center'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.