Ontario
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Ontario Weather in March

March in Ontario brings high temperatures, with highs of 22°C (72°F) and nights dropping to 8°C (46°F). With excellent weather conditions overall, it's a good time to visit.

Rainfall in Ontario in March

Records from the past 30 years suggest around 5 days of rain, with 33 mm (1.3 in) average for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in Ontario in March

Ontario has excellent weather in March, with days reaching 22°C (72°F) and nights cooling to 8°C (46°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Ontario in March

Expect a lot of sunshine this month, with about 268 hours of sun. These sunny conditions add to the overall experience.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, October and November typically offer the best weather for Ontario.

Ontario Temperature in March

Min Temperature
8°C (46°F)
Max Temperature
22°C (72°F)
Chance of Rain
17%
Precipitation
33 mm (1.3 in)
Rainy days
5 days
Sunshine
268 hours *
Percentage Sunshine
*
* Data from: Corona, the United States of America (22 KM, 13 Miles).

Ontario Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Ontario - and find the best time to visit.

Best Places in the United States of America in March

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in March →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Ontario in March

Pleasant temperatures in March mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Pack a light rain jacket or compact umbrella for occasional showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Ontario in March

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    10/10
  • Walking
    10/10
  • Barbeque
    9/10
  • Camping
    5/10
  • Outdoor sports
    10/10

Ontario 3-Day Forecast

More climate data for Ontario

Popular in March

Where to go in March - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.