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Monthly climate in Dartmouth, Nova Scotia, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Dartmouth features a humid continental climate (Dfb).Temperatures typically range between -3 °C (27 °F) and 20 °C (67 °F) through the year, but rarely can drop to -20 °C (-4 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 1292 mm (50.9 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually.Dartmouth enjoys an average of 2776 hours of sunshine throughout the year, and daylight varies from 8 hours 51 minutes to 15 hours 29 minutes per day.

Monthly average temperatures in Dartmouth, Nova Scotia, Canada §

The warmest months in Dartmouth are July, August and September, with daily mean temperatures ranging from 16 to 20 °C (61 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -3 to 0 °C (27 - 32 °F) throughout the day. On average each year, Dartmouth experiences 21 days above 25 °C (77.0 °F) and 120 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Dartmouth, Nova Scotia, Canada.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 15°C
(58°F)		 12°C
(53°F)		 16°C
(61°F)		 18°C
(65°F)		 27°C
(82°F)		 30°C
(87°F)		 32°C
(90°F)		 30°C
(86°F)		 28°C
(83°F)		 23°C
(73°F)		 20°C
(69°F)		 15°C
(60°F)
Mean maximum 10°C
(51°F)		 10°C
(50°F)		 12°C
(53°F)		 17°C
(62°F)		 23°C
(74°F)		 26°C
(80°F)		 29°C
(85°F)		 29°C
(84°F)		 26°C
(79°F)		 21°C
(70°F)		 18°C
(65°F)		 14°C
(57°F)
Average high 1°C
(34°F)		 1°C
(34°F)		 4°C
(39°F)		 9°C
(49°F)		 14°C
(58°F)		 19°C
(67°F)		 23°C
(74°F)		 24°C
(76°F)		 20°C
(69°F)		 15°C
(59°F)		 9°C
(49°F)		 3°C
(38°F)
Daily mean -3°C
(27°F)		 -3°C
(27°F)		 -0°C
(32°F)		 5°C
(41°F)		 9°C
(49°F)		 15°C
(59°F)		 19°C
(66°F)		 20°C
(67°F)		 16°C
(61°F)		 11°C
(51°F)		 5°C
(42°F)		 -0°C
(32°F)
Average low -7°C
(20°F)		 -7°C
(20°F)		 -4°C
(25°F)		 1°C
(35°F)		 5°C
(41°F)		 10°C
(51°F)		 15°C
(59°F)		 15°C
(60°F)		 12°C
(54°F)		 7°C
(45°F)		 1°C
(35°F)		 -4°C
(26°F)
Mean minimum -16°C
(3°F)		 -17°C
(1°F)		 -14°C
(7°F)		 -4°C
(24°F)		 -0°C
(32°F)		 4°C
(39°F)		 10°C
(51°F)		 10°C
(50°F)		 5°C
(41°F)		 1°C
(33°F)		 -6°C
(21°F)		 -13°C
(10°F)
Minimum -18°C
(0°F)		 -20°C
(-4°F)		 -18°C
(-0°F)		 -7°C
(19°F)		 -3°C
(26°F)		 -1°C
(30°F)		 10°C
(50°F)		 9°C
(48°F)		 2°C
(36°F)		 -2°C
(28°F)		 -11°C
(12°F)		 -15°C
(5°F)

Compare climate in Dartmouth with other places

Compare temperature, precipitation, sunshine, UV index in Dartmouth, Nova Scotia, Canada with other places around the world.

Monthly average precipitation in Dartmouth, Nova Scotia, Canada §

Dartmouth usually has the most precipitation in April, November and December, with an average of 12 rainy days and 132 mm (5.2 inches) of precipitation per month.The driest months in Dartmouth are May, July and August. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Dartmouth, Nova Scotia, Canada.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) 97 (3.8) 122 (4.8) 103 (4.1) 122 (4.8) 93 (3.7) 99 (3.9) 91 (3.6) 77 (3.0) 104 (4.1) 109 (4.3) 149 (5.9) 127 (5.0)
Average precipitation days (≥ 1 mm) 10 11 11 13 13 11 10 10 8 9 13 12

Monthly sunshine hours in Dartmouth, Nova Scotia, Canada §

The sunniest months in Dartmouth are June, July and August, when the sun shines an average of 10 hours 15 minutes a day.Least sunny months in Dartmouth: January, November and December receive an average of 4 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Dartmouth, Nova Scotia, Canada.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 110 175 245 234 284 300 317 325 264 223 151 142
Mean daily daylight hours 9h 14m 10h 26m 11h 57m 13h 30m 14h 49m 15h 29m 15h 7m 13h 57m 12h 27m 10h 55m 9h 33m 8h 51m

Solar UV radiation in Dartmouth, Nova Scotia, Canada §

Dartmouth experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 3. For more detailed information, check out our hourly Dartmouth UV Index data.

Average daily maximum UV levels by month for Dartmouth, Nova Scotia, Canada.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) 2 4 5 7 9 10 9 8 7 5 3 2