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Monthly climate in Belleville, Ontario, Canada

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Belleville features a humid continental climate (Dfb). Temperatures typically range between -6 °C (22 °F) and 22 °C (72 °F) through the year, but rarely can drop to -30 °C (-21 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 1072 mm (42.2 inches) and receives 133 rainy days on the 1 mm (0.04 inches) threshold annually. Belleville enjoys an average of 2786 hours of sunshine throughout the year, and daylight varies from 8 hours 54 minutes to 15 hours 26 minutes per day.

Monthly average temperatures in Belleville, Ontario, Canada §

The warmest months in Belleville are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (66 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -2 °C (22 - 28 °F) throughout the day. On average each year, Belleville experiences 58 days above 25 °C (77.0 °F) and 127 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Belleville, Ontario, 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 11°C
(51°F)		 15°C
(60°F)		 18°C
(65°F)		 25°C
(78°F)		 32°C
(89°F)		 32°C
(89°F)		 34°C
(93°F)		 33°C
(91°F)		 33°C
(91°F)		 27°C
(80°F)		 20°C
(69°F)		 15°C
(58°F)
Mean maximum 7°C
(45°F)		 9°C
(49°F)		 14°C
(57°F)		 20°C
(68°F)		 28°C
(83°F)		 30°C
(86°F)		 32°C
(89°F)		 31°C
(87°F)		 29°C
(84°F)		 24°C
(76°F)		 15°C
(60°F)		 10°C
(50°F)
Average high -2°C
(29°F)		 -0°C
(32°F)		 4°C
(40°F)		 11°C
(52°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(81°F)		 26°C
(79°F)		 22°C
(72°F)		 15°C
(59°F)		 6°C
(44°F)		 1°C
(34°F)
Daily mean -6°C
(22°F)		 -5°C
(24°F)		 -0°C
(32°F)		 6°C
(43°F)		 13°C
(56°F)		 19°C
(66°F)		 22°C
(72°F)		 21°C
(70°F)		 17°C
(63°F)		 10°C
(51°F)		 3°C
(37°F)		 -2°C
(28°F)
Average low -10°C
(15°F)		 -9°C
(16°F)		 -4°C
(24°F)		 2°C
(36°F)		 8°C
(47°F)		 13°C
(56°F)		 17°C
(63°F)		 16°C
(61°F)		 12°C
(54°F)		 7°C
(44°F)		 -1°C
(30°F)		 -6°C
(22°F)
Mean minimum -24°C
(-10°F)		 -21°C
(-5°F)		 -16°C
(3°F)		 -5°C
(24°F)		 0°C
(33°F)		 8°C
(46°F)		 12°C
(54°F)		 10°C
(50°F)		 5°C
(41°F)		 -1°C
(30°F)		 -12°C
(11°F)		 -18°C
(-0°F)
Minimum -30°C
(-21°F)		 -25°C
(-12°F)		 -20°C
(-3°F)		 -8°C
(18°F)		 -3°C
(27°F)		 5°C
(40°F)		 11°C
(52°F)		 8°C
(47°F)		 1°C
(34°F)		 -3°C
(28°F)		 -17°C
(2°F)		 -29°C
(-19°F)

Compare climate in Belleville with other places

Compare temperature, precipitation, sunshine, UV index in Belleville, Ontario, Canada with other places around the world.

Monthly average precipitation in Belleville, Ontario, Canada §

Belleville usually has the most precipitation in April, August and October, with an average of 12 rainy days and 114 mm (4.5 inches) of precipitation per month. The driest months in Belleville are January, February and March. On average, 69 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Belleville, Ontario, 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) 69 (2.7) 72 (2.8) 65 (2.6) 114 (4.5) 95 (3.7) 92 (3.6) 89 (3.5) 102 (4.0) 79 (3.1) 126 (5.0) 90 (3.5) 79 (3.1)
Average precipitation days (≥ 1 mm) 9 11 10 12 12 11 12 12 9 13 11 11

Monthly sunshine hours in Belleville, Ontario, Canada §

The sunniest months in Belleville are June, July and August, when the sun shines an average of 10 hours 46 minutes a day. Least sunny months in Belleville: January, November and December receive an average of 4 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Belleville, Ontario, 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 124 154 233 229 281 322 339 329 292 199 151 129
Mean daily daylight hours 9h 17m 10h 28m 11h 57m 13h 29m 14h 47m 15h 26m 15h 4m 13h 55m 12h 27m 10h 56m 9h 36m 8h 54m

Solar UV radiation in Belleville, Ontario, Canada §

Belleville experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 9, 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 Belleville UV Index data.

Average daily maximum UV levels by month for Belleville, Ontario, 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 8 9 9 9 9 7 5 3 2

Detailed Monthly Weather Insights for Belleville, Ontario, Canada

Discover in-depth weather details for every month in Belleville. 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 Belleville'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.