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Monthly climate in Prince Rupert, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Prince Rupert features a oceanic climate (Cfb). Temperatures typically range between 1 °C (34 °F) and 14 °C (57 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 27 °C (81 °F). The average annual precipitation amounts to about 3049 mm (120.0 inches) and receives 220 rainy days on the 1 mm (0.04 inches) threshold annually. Prince Rupert enjoys an average of 2088 hours of sunshine throughout the year, and daylight varies from 7 hours 23 minutes to 17 hours 6 minutes per day.

Monthly average temperatures in Prince Rupert, Canada

The warmest months in Prince Rupert are July, August and September, with daily mean temperatures ranging from 12 to 14 °C (54 - 57 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (34 - 36 °F) throughout the day. On average each year, Prince Rupert experiences 0 days above 25 °C (77.0 °F) and 58 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Prince Rupert. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum9°C
(49°F)		11°C
(51°F)		19°C
(67°F)		18°C
(65°F)		25°C
(76°F)		27°C
(81°F)		24°C
(76°F)		24°C
(75°F)		25°C
(78°F)		19°C
(66°F)		12°C
(54°F)		12°C
(54°F)
Mean maximum9°C
(48°F)		8°C
(48°F)		12°C
(54°F)		16°C
(60°F)		19°C
(67°F)		20°C
(69°F)		22°C
(72°F)		22°C
(72°F)		19°C
(67°F)		16°C
(61°F)		11°C
(52°F)		10°C
(50°F)
Average high4°C
(39°F)		4°C
(39°F)		6°C
(44°F)		9°C
(49°F)		12°C
(55°F)		14°C
(58°F)		16°C
(62°F)		16°C
(62°F)		15°C
(59°F)		10°C
(51°F)		7°C
(45°F)		4°C
(39°F)
Daily mean2°C
(35°F)		1°C
(34°F)		3°C
(38°F)		6°C
(43°F)		9°C
(49°F)		12°C
(53°F)		14°C
(57°F)		14°C
(57°F)		12°C
(54°F)		8°C
(46°F)		5°C
(42°F)		2°C
(36°F)
Average low-1°C
(31°F)		-2°C
(29°F)		0°C
(33°F)		3°C
(37°F)		7°C
(44°F)		9°C
(49°F)		11°C
(52°F)		12°C
(53°F)		10°C
(50°F)		5°C
(42°F)		3°C
(38°F)		-0°C
(32°F)
Mean minimum-12°C
(11°F)		-12°C
(10°F)		-7°C
(19°F)		-3°C
(28°F)		3°C
(38°F)		6°C
(43°F)		9°C
(48°F)		8°C
(47°F)		6°C
(43°F)		1°C
(33°F)		-2°C
(30°F)		-9°C
(16°F)
Minimum-24°C
(-10°F)		-14°C
(7°F)		-11°C
(13°F)		-6°C
(21°F)		2°C
(37°F)		5°C
(41°F)		8°C
(46°F)		7°C
(45°F)		3°C
(39°F)		-1°C
(30°F)		-2°C
(28°F)		-21°C
(-5°F)

Compare climate in Prince Rupert with other places

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

Monthly average precipitation in Prince Rupert, Canada

Prince Rupert usually has the most precipitation in October, November and December, with an average of 20 rainy days and 366 mm (14.4 inches) of precipitation per month. The driest months in Prince Rupert are May, June and July. On average, 145 mm (5.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Prince Rupert. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)285 (11.2)240 (9.4)277 (10.9)215 (8.4)131 (5.2)171 (6.7)134 (5.3)243 (9.6)256 (10.1)339 (13.3)446 (17.5)314 (12.4)
Average precipitation days (≥ 1 mm)191619171520161818202220

Monthly sunshine hours in Prince Rupert, Canada

The sunniest months in Prince Rupert are May, June and July, when the sun shines an average of 8 hours 27 minutes a day. Least sunny months in Prince Rupert: January, November and December receive an average of 2 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Prince Rupert. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours561271782272592422762371861467674
Mean daily daylight hours7h 59m9h 46m11h 55m14h 7m16h 4m17h 6m16h 31m14h 45m12h 37m10h 25m8h 27m7h 23m

Solar UV radiation in Prince Rupert, Canada

Prince Rupert experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / 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 1. For more detailed information, check out our hourly Prince Rupert UV Index data.

Average daily maximum UV levels by month for Prince Rupert. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)123577875311