Weather in Ottawa in March 2025
Average weather
Average temperature in Ottawa in March
Going from a maximum of +8°C during the day to a minimum of -16°C during the night, the temperature in March averages around +3°C.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +2°C to +3°C.
Is Ottawa warm or cold in March?
Ottawa is typically cool in March.
Maximum temperatures go up compared to the previous month from -3°C to +3°C. The minimum temperature also goes up from -12°C to -6°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how March is compared to other months in Ottawa:
Climate in Ottawa in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| -3°C | +3°C | +12°C | ||||
| Min. temperature | ||||||
| -32°C | -29°C | -18°C | ||||
| Max. temperature | ||||||
| +13°C | +27°C | +32°C | ||||
| Rainfall | ||||||
| 12 mm | 28 mm | 71 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 70% | 67% | 62% | ||||
| Air pressure | ||||||
| 1016 HPa | 1015 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 3 | 5 | 4 | ||||
| Cloudy days | ||||||
| 11 | 12 | 10 | ||||
| Rainy days | ||||||
| 1 | 4 | 11 | ||||
| Snowy days | ||||||
| 13 | 11 | 4 | ||||
March weather is still as ok as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from -3°C to +3°C during the day. Prepare for more rain. Average rainfall goes from 12 mm to 28 mm. It feels drier, as humidity decreases from 70% to 67%. The average wind speed doesn’t change much during March, staying around 3 m/s. The good news is there are likely to be more sunny days in March, from 3 to 5.
April brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Ottawa is gradually increasing during March, going from 3 m/s to 3 m/s over the course of the month.
Rain
Snow
Here’s how March is compared with other months in the amount of snow, total mm:
How was the weather last March in Ottawa?
Climate Change over Years
The climate in Ottawa in March has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+10°C) and the highest in 2012 (+13°C). The driest year was 1985 with only 469 mm of rainfall, and the wettest year was 2017 with 1378 mm.
FAQ
Is March a good time to visit Ottawa?
Can you sunbathe in Ottawa in March?
Is Ottawa rainy in March?
Is it sunny in Ottawa in March?
Other cities in Canada
Monthly weather in Ottawa
Source of the data
For this page, we’ve looked at the typical weather in Ottawa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.