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Monthly climate in Waterloo, Quebec, Canada

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Waterloo features a humid continental climate (Dfb). Temperatures typically range between -8 °C (18 °F) and 20 °C (69 °F) through the year, but rarely can drop to -32 °C (-25 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1317 mm (51.8 inches) and receives 173 rainy days on the 1 mm (0.04 inches) threshold annually. Waterloo enjoys an average of 2728 hours of sunshine throughout the year, and daylight varies from 8 hours 46 minutes to 15 hours 35 minutes per day.

Monthly average temperatures in Waterloo, Quebec, Canada §

The warmest months in Waterloo are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (64 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -5 °C (18 - 23 °F) throughout the day. On average each year, Waterloo experiences 41 days above 25 °C (77.0 °F) and 140 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Waterloo, Quebec, 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 12°C
(54°F)		 15°C
(59°F)		 21°C
(70°F)		 25°C
(77°F)		 35°C
(95°F)		 32°C
(90°F)		 33°C
(91°F)		 32°C
(89°F)		 30°C
(87°F)		 25°C
(78°F)		 22°C
(73°F)		 15°C
(60°F)
Mean maximum 7°C
(45°F)		 9°C
(48°F)		 14°C
(57°F)		 21°C
(70°F)		 30°C
(85°F)		 29°C
(85°F)		 30°C
(87°F)		 30°C
(87°F)		 27°C
(82°F)		 23°C
(74°F)		 16°C
(61°F)		 10°C
(51°F)
Average high -4°C
(25°F)		 -2°C
(28°F)		 2°C
(36°F)		 10°C
(50°F)		 18°C
(65°F)		 23°C
(73°F)		 25°C
(77°F)		 24°C
(76°F)		 20°C
(69°F)		 13°C
(56°F)		 4°C
(40°F)		 -2°C
(29°F)
Daily mean -8°C
(18°F)		 -7°C
(20°F)		 -2°C
(28°F)		 5°C
(42°F)		 13°C
(55°F)		 17°C
(64°F)		 20°C
(69°F)		 19°C
(67°F)		 15°C
(60°F)		 9°C
(49°F)		 1°C
(33°F)		 -5°C
(23°F)
Average low -12°C
(10°F)		 -12°C
(12°F)		 -6°C
(21°F)		 1°C
(34°F)		 7°C
(45°F)		 12°C
(54°F)		 16°C
(60°F)		 15°C
(59°F)		 11°C
(51°F)		 5°C
(42°F)		 -3°C
(27°F)		 -9°C
(16°F)
Mean minimum -26°C
(-15°F)		 -24°C
(-11°F)		 -20°C
(-3°F)		 -8°C
(19°F)		 -0°C
(31°F)		 6°C
(44°F)		 10°C
(50°F)		 8°C
(47°F)		 2°C
(36°F)		 -3°C
(28°F)		 -16°C
(4°F)		 -23°C
(-8°F)
Minimum -32°C
(-25°F)		 -27°C
(-16°F)		 -23°C
(-9°F)		 -10°C
(14°F)		 -1°C
(30°F)		 1°C
(34°F)		 8°C
(47°F)		 6°C
(43°F)		 -3°C
(27°F)		 -6°C
(21°F)		 -19°C
(-2°F)		 -27°C
(-17°F)

Compare climate in Waterloo with other places

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

Monthly average precipitation in Waterloo, Quebec, Canada §

Waterloo usually has the most precipitation in June, August and October, with an average of 15 rainy days and 134 mm (5.3 inches) of precipitation per month. The driest months in Waterloo are February, September and December. On average, 86 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Waterloo, Quebec, 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) 93 (3.7) 89 (3.5) 90 (3.5) 120 (4.7) 106 (4.2) 126 (5.0) 123 (4.8) 128 (5.0) 84 (3.3) 147 (5.8) 125 (4.9) 86 (3.4)
Average precipitation days (≥ 1 mm) 13 15 13 16 13 14 15 16 11 16 16 15

Monthly sunshine hours in Waterloo, Quebec, Canada §

The sunniest months in Waterloo are June, July and August, when the sun shines an average of 10 hours 47 minutes a day. Least sunny months in Waterloo: January, November and December receive an average of 4 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Waterloo, Quebec, 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 111 150 223 214 279 323 334 334 288 189 141 137
Mean daily daylight hours 9h 10m 10h 24m 11h 57m 13h 32m 14h 54m 15h 35m 15h 12m 14h 0m 12h 28m 10h 53m 9h 29m 8h 46m

Solar UV radiation in Waterloo, Quebec, Canada §

Waterloo experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 Waterloo UV Index data.

Average daily maximum UV levels by month for Waterloo, Quebec, 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 9 9 8 7 5 3 2

Detailed Monthly Weather Insights for Waterloo, Quebec, Canada

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