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Monthly climate in Swan River, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Swan River features a subarctic climate (Dfc). Temperatures typically range between -17 °C (2 °F) and 19 °C (66 °F) through the year, but rarely can drop to -43 °C (-45 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 503 mm (19.8 inches) and receives 92 rainy days on the 1 mm (0.04 inches) threshold annually. Swan River enjoys an average of 2949 hours of sunshine throughout the year, and daylight varies from 7 hours 47 minutes to 16 hours 39 minutes per day.

Monthly average temperatures in Swan River, Canada

The warmest months in Swan River are June, July and August, with daily mean temperatures ranging from 16 to 19 °C (61 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -17 to -13 °C (2 - 10 °F) throughout the day. On average each year, Swan River experiences 33 days above 25 °C (77.0 °F) and 189 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Swan River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum5°C
(41°F)		7°C
(45°F)		14°C
(58°F)		24°C
(75°F)		31°C
(89°F)		32°C
(91°F)		34°C
(93°F)		33°C
(92°F)		31°C
(89°F)		26°C
(79°F)		14°C
(57°F)		4°C
(40°F)
Mean maximum2°C
(36°F)		2°C
(35°F)		9°C
(48°F)		19°C
(67°F)		28°C
(82°F)		28°C
(82°F)		31°C
(88°F)		32°C
(89°F)		28°C
(82°F)		20°C
(69°F)		8°C
(47°F)		3°C
(37°F)
Average high-10°C
(14°F)		-12°C
(11°F)		-1°C
(30°F)		6°C
(43°F)		17°C
(62°F)		22°C
(71°F)		25°C
(76°F)		23°C
(73°F)		17°C
(63°F)		8°C
(46°F)		-3°C
(26°F)		-9°C
(17°F)
Daily mean-15°C
(6°F)		-17°C
(2°F)		-7°C
(20°F)		0°C
(33°F)		10°C
(50°F)		16°C
(61°F)		19°C
(66°F)		17°C
(62°F)		11°C
(52°F)		3°C
(37°F)		-7°C
(19°F)		-13°C
(10°F)
Average low-20°C
(-3°F)		-22°C
(-7°F)		-12°C
(11°F)		-5°C
(23°F)		4°C
(39°F)		10°C
(51°F)		13°C
(56°F)		11°C
(51°F)		6°C
(43°F)		-1°C
(30°F)		-11°C
(12°F)		-17°C
(2°F)
Mean minimum-35°C
(-32°F)		-34°C
(-29°F)		-28°C
(-18°F)		-18°C
(-1°F)		-4°C
(24°F)		4°C
(39°F)		8°C
(46°F)		4°C
(39°F)		-1°C
(30°F)		-10°C
(14°F)		-21°C
(-6°F)		-33°C
(-26°F)
Minimum-43°C
(-45°F)		-40°C
(-40°F)		-36°C
(-32°F)		-26°C
(-14°F)		-6°C
(21°F)		1°C
(34°F)		5°C
(41°F)		2°C
(36°F)		-4°C
(25°F)		-11°C
(13°F)		-26°C
(-14°F)		-37°C
(-35°F)

Compare climate in Swan River with other places

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

Monthly average precipitation in Swan River, Canada

Swan River usually has the most precipitation in June, July and August, with an average of 10 rainy days and 75 mm (3.0 inches) of precipitation per month. The driest months in Swan River are January, February and December. On average, 21 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Swan River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)25 (1.0)16 (0.6)33 (1.3)27 (1.1)37 (1.4)99 (3.9)67 (2.6)60 (2.4)41 (1.6)41 (1.6)35 (1.4)21 (0.8)
Average precipitation days (≥ 1 mm)638671210108976

Monthly sunshine hours in Swan River, Canada

The sunniest months in Swan River are May, July and August, when the sun shines an average of 11 hours 8 minutes a day. Least sunny months in Swan River: January, November and December receive an average of 4 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Swan River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours128207245289329316380325242192138152
Mean daily daylight hours8h 19m9h 56m11h 55m13h 57m15h 44m16h 39m16h 8m14h 32m12h 34m10h 33m8h 45m7h 47m

Solar UV radiation in Swan River, Canada

Swan River experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 8 - 8, which corresponds to the Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Swan River UV Index data.

Average daily maximum UV levels by month for Swan River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234688876421