Climate almanac
Port Colborne
Ontario, Canada · 42.90°, -79.23°
What is the climate like in Port Colborne?
The best time to visit Port Colborne is typically August – September, with trip comfort peaking in September (7.1/10). Port Colborne is warmest in July, when daily highs average 77°F (25°C), and coolest in January, when lows fall to about 25°F (-4°C). The wettest month is typically October and the driest is September; the year sees roughly 43 in (1093 mm) of precipitation.
- Best time to visitAugust – September — comfort peaks in September (7.1/10)
- Warmest monthJuly — average high 77°F (25°C)
- Coolest monthJanuary — average low 25°F (-4°C)
- Wettest monthOctober (4.4 in (112 mm))
- Driest monthSeptember (2.8 in (71 mm))
- Annual precipitation43 in (1093 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromPort Colborne, 2 km away (1964-2024)