Climate almanac
Ottawa South
Ontario, Canada · 45.39°, -75.69°
What is the weather like in Ottawa South in May?
In May, Ottawa South is typically 68°F (20°C) during the day and 46°F (8°C) at night. The month brings about 3.9 in (100 mm) of precipitation in total. Snowfall averages about 0.2 in (4 mm) over the month.
- Average high68°F (20°C)
- Average low46°F (8°C)
- Precipitation3.9 in (100 mm)
- Clear or mostly clear days7
- Snowfall0.2 in (4 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)