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Monthly climate in Sussex, New Brunswick, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sussex features a humid continental climate (Dfb).Temperatures typically range between -7 °C (20 °F) and 19 °C (66 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 1223 mm (48.1 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually.Sussex enjoys an average of 2788 hours of sunshine throughout the year, and daylight varies from 8 hours 43 minutes to 15 hours 38 minutes per day.

Monthly average temperatures in Sussex, New Brunswick, Canada §

The warmest months in Sussex are June, July and August, with daily mean temperatures ranging from 15 to 19 °C (60 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -4 °C (20 - 25 °F) throughout the day. On average each year, Sussex experiences 29 days above 25 °C (77.0 °F) and 149 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sussex, New Brunswick, 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 14°C
(58°F)		 11°C
(52°F)		 19°C
(66°F)		 21°C
(70°F)		 29°C
(85°F)		 32°C
(90°F)		 33°C
(92°F)		 31°C
(87°F)		 30°C
(86°F)		 23°C
(74°F)		 21°C
(70°F)		 15°C
(59°F)
Mean maximum 9°C
(49°F)		 8°C
(47°F)		 12°C
(54°F)		 18°C
(64°F)		 25°C
(78°F)		 27°C
(80°F)		 30°C
(86°F)		 29°C
(85°F)		 26°C
(80°F)		 20°C
(69°F)		 17°C
(63°F)		 13°C
(56°F)
Average high -2°C
(29°F)		 -1°C
(30°F)		 3°C
(37°F)		 9°C
(49°F)		 16°C
(60°F)		 21°C
(70°F)		 24°C
(75°F)		 24°C
(76°F)		 20°C
(68°F)		 13°C
(56°F)		 6°C
(43°F)		 1°C
(33°F)
Daily mean -7°C
(20°F)		 -6°C
(21°F)		 -2°C
(28°F)		 4°C
(40°F)		 10°C
(50°F)		 15°C
(60°F)		 19°C
(66°F)		 19°C
(66°F)		 15°C
(58°F)		 9°C
(48°F)		 2°C
(36°F)		 -4°C
(25°F)
Average low -12°C
(11°F)		 -11°C
(12°F)		 -7°C
(20°F)		 0°C
(32°F)		 4°C
(40°F)		 10°C
(49°F)		 14°C
(57°F)		 14°C
(57°F)		 10°C
(49°F)		 4°C
(40°F)		 -2°C
(29°F)		 -8°C
(18°F)
Mean minimum -23°C
(-9°F)		 -24°C
(-11°F)		 -18°C
(-1°F)		 -6°C
(21°F)		 -2°C
(29°F)		 2°C
(36°F)		 8°C
(47°F)		 7°C
(45°F)		 1°C
(34°F)		 -4°C
(25°F)		 -11°C
(13°F)		 -18°C
(-1°F)
Minimum -30°C
(-22°F)		 -28°C
(-18°F)		 -23°C
(-9°F)		 -8°C
(17°F)		 -4°C
(25°F)		 -3°C
(27°F)		 7°C
(45°F)		 5°C
(41°F)		 -2°C
(29°F)		 -7°C
(20°F)		 -17°C
(2°F)		 -23°C
(-9°F)

Compare climate in Sussex with other places

Compare temperature, precipitation, sunshine, UV index in Sussex, New Brunswick, Canada with other places around the world.

Monthly average precipitation in Sussex, New Brunswick, Canada §

Sussex usually has the most precipitation in May, November and December, with an average of 13 rainy days and 127 mm (5.0 inches) of precipitation per month.The driest months in Sussex are March, July and August. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sussex, New Brunswick, 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) 101 (4.0) 104 (4.1) 80 (3.2) 105 (4.1) 107 (4.2) 99 (3.9) 87 (3.4) 81 (3.2) 91 (3.6) 93 (3.7) 160 (6.3) 114 (4.5)
Average precipitation days (≥ 1 mm) 9 12 11 12 13 12 12 11 10 12 15 11

Monthly sunshine hours in Sussex, New Brunswick, Canada §

The sunniest months in Sussex are June, July and August, when the sun shines an average of 10 hours 11 minutes a day.Least sunny months in Sussex: January, November and December receive an average of 4 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sussex, New Brunswick, 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 127 189 239 218 275 309 310 317 267 218 156 158
Mean daily daylight hours 9h 7m 10h 22m 11h 57m 13h 33m 14h 56m 15h 38m 15h 15m 14h 1m 12h 28m 10h 52m 9h 27m 8h 43m

Solar UV radiation in Sussex, New Brunswick, Canada §

Sussex experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 8 - 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 3. For more detailed information, check out our hourly Sussex UV Index data.

Average daily maximum UV levels by month for Sussex, New Brunswick, 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 3 5 7 9 10 8 8 7 5 3 2