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Monthly climate in Port Rowan, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Port Rowan features a humid continental climate (Dfb). Temperatures typically range between -2 °C (29 °F) and 22 °C (72 °F) through the year, but rarely can drop to -19 °C (-1 °F) or can rise to as high as 28 °C (83 °F). The average annual precipitation amounts to about 1177 mm (46.4 inches) and receives 145 rainy days on the 1 mm (0.04 inches) threshold annually. Port Rowan enjoys an average of 2854 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Port Rowan, Canada

The warmest months in Port Rowan are July, August and September, with daily mean temperatures ranging from 19 to 22 °C (67 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -2 to 0 °C (29 - 33 °F) throughout the day. On average each year, Port Rowan experiences 15 days above 25 °C (77.0 °F) and 77 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 Rowan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		11°C
(53°F)		9°C
(48°F)		13°C
(56°F)		21°C
(70°F)		26°C
(78°F)		28°C
(83°F)		27°C
(81°F)		27°C
(80°F)		24°C
(76°F)		16°C
(61°F)		12°C
(53°F)
Mean maximum7°C
(45°F)		6°C
(43°F)		8°C
(46°F)		11°C
(52°F)		18°C
(65°F)		24°C
(75°F)		27°C
(81°F)		27°C
(80°F)		26°C
(79°F)		23°C
(73°F)		15°C
(59°F)		10°C
(50°F)
Average high1°C
(33°F)		0°C
(33°F)		2°C
(36°F)		6°C
(44°F)		12°C
(54°F)		19°C
(67°F)		24°C
(75°F)		24°C
(75°F)		21°C
(70°F)		16°C
(61°F)		8°C
(47°F)		4°C
(39°F)
Daily mean-2°C
(30°F)		-2°C
(29°F)		0°C
(33°F)		4°C
(40°F)		10°C
(51°F)		17°C
(64°F)		22°C
(72°F)		22°C
(72°F)		19°C
(67°F)		14°C
(57°F)		6°C
(43°F)		2°C
(36°F)
Average low-3°C
(26°F)		-4°C
(25°F)		-2°C
(29°F)		3°C
(38°F)		9°C
(48°F)		16°C
(61°F)		20°C
(69°F)		21°C
(69°F)		18°C
(64°F)		12°C
(54°F)		5°C
(40°F)		1°C
(34°F)
Mean minimum-11°C
(12°F)		-12°C
(11°F)		-8°C
(18°F)		-1°C
(30°F)		4°C
(39°F)		11°C
(52°F)		17°C
(64°F)		17°C
(62°F)		13°C
(56°F)		6°C
(44°F)		-2°C
(28°F)		-5°C
(24°F)
Minimum-19°C
(-1°F)		-18°C
(-1°F)		-13°C
(10°F)		-4°C
(24°F)		1°C
(33°F)		8°C
(47°F)		16°C
(62°F)		16°C
(60°F)		11°C
(52°F)		4°C
(39°F)		-6°C
(21°F)		-10°C
(13°F)

Compare climate in Port Rowan with other places

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

Monthly average precipitation in Port Rowan, Canada

Port Rowan usually has the most precipitation in October, November and December, with an average of 15 rainy days and 119 mm (4.7 inches) of precipitation per month. The driest months in Port Rowan are June, August and September. On average, 84 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Rowan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)91 (3.6)89 (3.5)92 (3.6)104 (4.1)106 (4.2)80 (3.2)89 (3.5)87 (3.4)85 (3.3)132 (5.2)115 (4.5)109 (4.3)
Average precipitation days (≥ 1 mm)12131112121011109161316

Monthly sunshine hours in Port Rowan, Canada

The sunniest months in Port Rowan are June, July and August, when the sun shines an average of 11 hours 15 minutes a day. Least sunny months in Port Rowan: January, February and December receive an average of 4 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Rowan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours99147235253291343350342297221155117
Mean daily daylight hours9h 26m10h 33m11h 57m13h 24m14h 38m15h 14m14h 54m13h 49m12h 25m10h 59m9h 44m9h 5m

Solar UV radiation in Port Rowan, Canada

Port Rowan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, 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 4. For more detailed information, check out our hourly Port Rowan UV Index data.

Average daily maximum UV levels by month for Port Rowan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)25589101098642