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Monthly climate in Port Alberni, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Port Alberni features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 3 °C (37 °F) and 18 °C (64 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 1906 mm (75.0 inches) and receives 168 rainy days on the 1 mm (0.04 inches) threshold annually. Port Alberni enjoys an average of 2519 hours of sunshine throughout the year, and daylight varies from 8 hours 15 minutes to 16 hours 9 minutes per day.

Monthly average temperatures in Port Alberni, Canada

The warmest months in Port Alberni are July, August and September, with daily mean temperatures ranging from 14 to 18 °C (58 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 4 °C (37 - 39 °F) throughout the day. On average each year, Port Alberni experiences 11 days above 25 °C (77.0 °F) and 26 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Port Alberni. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		10°C
(50°F)		18°C
(65°F)		22°C
(72°F)		25°C
(77°F)		35°C
(96°F)		29°C
(85°F)		32°C
(90°F)		29°C
(84°F)		20°C
(68°F)		14°C
(57°F)		12°C
(53°F)
Mean maximum9°C
(49°F)		9°C
(49°F)		13°C
(55°F)		17°C
(63°F)		22°C
(71°F)		26°C
(79°F)		27°C
(80°F)		29°C
(84°F)		25°C
(76°F)		16°C
(62°F)		13°C
(55°F)		9°C
(49°F)
Average high6°C
(42°F)		5°C
(41°F)		8°C
(46°F)		11°C
(52°F)		15°C
(60°F)		18°C
(64°F)		21°C
(70°F)		22°C
(71°F)		17°C
(64°F)		12°C
(54°F)		8°C
(47°F)		5°C
(42°F)
Daily mean4°C
(39°F)		3°C
(37°F)		5°C
(41°F)		8°C
(46°F)		12°C
(53°F)		14°C
(58°F)		17°C
(63°F)		18°C
(64°F)		14°C
(58°F)		9°C
(49°F)		6°C
(44°F)		4°C
(39°F)
Average low2°C
(36°F)		1°C
(33°F)		2°C
(36°F)		4°C
(40°F)		8°C
(47°F)		11°C
(52°F)		13°C
(56°F)		14°C
(58°F)		12°C
(54°F)		7°C
(45°F)		4°C
(40°F)		2°C
(36°F)
Mean minimum-4°C
(26°F)		-4°C
(24°F)		-2°C
(28°F)		1°C
(34°F)		4°C
(39°F)		7°C
(45°F)		10°C
(51°F)		11°C
(52°F)		8°C
(46°F)		2°C
(36°F)		-0°C
(32°F)		-4°C
(25°F)
Minimum-7°C
(19°F)		-7°C
(19°F)		-4°C
(25°F)		-0°C
(32°F)		2°C
(35°F)		6°C
(43°F)		10°C
(50°F)		10°C
(50°F)		7°C
(44°F)		0°C
(33°F)		-3°C
(28°F)		-10°C
(15°F)

Compare climate in Port Alberni with other places

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

Monthly average precipitation in Port Alberni, Canada

Port Alberni usually has the most precipitation in January, November and December, with an average of 19 rainy days and 294 mm (11.6 inches) of precipitation per month. The driest months in Port Alberni are May, July and August. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Alberni. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)286 (11.3)161 (6.4)160 (6.3)142 (5.6)67 (2.6)67 (2.6)27 (1.1)41 (1.6)157 (6.2)200 (7.9)323 (12.7)274 (10.8)
Average precipitation days (≥ 1 mm)1718161610125513161921

Monthly sunshine hours in Port Alberni, Canada

The sunniest months in Port Alberni are June, July and August, when the sun shines an average of 11 hours 4 minutes a day. Least sunny months in Port Alberni: January, November and December receive an average of 2 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Alberni. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours6512819122230531836533423217010084
Mean daily daylight hours8h 43m10h 9m11h 56m13h 46m15h 21m16h 9m15h 42m14h 17m12h 31m10h 42m9h 5m8h 15m

Solar UV radiation in Port Alberni, Canada

Port Alberni experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, 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 Port Alberni UV Index data.

Average daily maximum UV levels by month for Port Alberni. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689987521