Last updated: June 18, 2025
In March, the average temperature in Oshawa, Canada hovers around 0°C (32°F). Expect chilly days, with minimum temperatures dipping as low as -23°C (-9°F) and occasionally rising to a pleasant 18°C (64°F). During this period, the area experiences an average of 62 mm (2.4 in) of precipitation over about 10 days, and the air can feel quite humid, with an average humidity of 88%.
In March in Oshawa, the average temperature is 0°C (32°F). Maximums can reach 18°C (64°F), while minimums can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.
In Oshawa in March, the total precipitation amount is 62 mm (2.4 in) over a period of 10 days.
In Oshawa in March, humidity is 88%. With an average temperature of 0°C (32°F), this humidity feels like a chilly, damp blanket enveloping you, making travel uncomfortable as every breath seems to carry the weight of the cold moisture, turning each step into a struggle against the biting chill.
In Oshawa in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Oshawa.
UV Risk Categories
Weather in Oshawa varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Oshawa, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 65 mm (2.5 inches) | 91% | low |
| February Weather | -4°C (24°F) | 69 mm (2.7 inches) | 91% | moderate |
| March Weather | 0°C (32°F) | 62 mm (2.4 inches) | 88% | moderate |
| April Weather | 6°C (43°F) | 112 mm (4.4 inches) | 88% | very high |
| May Weather | 13°C (56°F) | 98 mm (3.9 inches) | 82% | very high |
| June Weather | 19°C (66°F) | 90 mm (3.5 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 92 mm (3.6 inches) | 77% | very high |
| August Weather | 21°C (70°F) | 108 mm (4.2 inches) | 72% | very high |
| September Weather | 17°C (63°F) | 73 mm (2.9 inches) | 76% | high |
| October Weather | 11°C (51°F) | 99 mm (3.9 inches) | 83% | moderate |
| November Weather | 3°C (37°F) | 83 mm (3.2 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 75 mm (2.9 inches) | 87% | low |