Toronto

Ontario Weather in March

Average temperatures, rainfall, sunshine and the best places to visit in Ontario, Canada in March.

Thinking about venturing to Ontario, Canada this March and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Ontario in March

Ontario, Canada is a region in Canada. March in Ontario generally has temperatures that range from very cold to cold, with moderate precipitation.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is very cold in Schreiber at -2°C (28°F) to cold in Windsor at 7°C (45°F). Nighttime temperatures generally drop to -2°C (28°F) in Windsor and -10°C (14°F) in Schreiber. In numerous regions in Canada, March is marked by its cold weather conditions. If you're heading to these areas during this month, it's vital to be well-prepared. Dressing in layered and insulated outfits will ensure you stay warm.

For a closer look at conditions across Ontario, Canada, refer to the map below.

Precipitation

In March, precipitation varies across different areas. From moderate snowfall in Red Lake with an average of 32 mm (1.3 in) to moderate snowfall in Port Colborne with 86 mm (3.4 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Toronto as an example - it receives around 161 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Ontario by month

Best Places to Visit in Ontario in March

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Ontario.

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).

Popular Destinations in Ontario

What is the weather like in March for some of the most popular destinations in Ontario, Canada?

Temperature range in Ontario (March)

Precipitation variation in Ontario (March)

Toronto

In March Toronto generally has low temperatures with maximum daytime temperatures around 5°C (41°F), minimum nighttime temperatures around -3°C (27°F) and moderate monthly snow/rainfall. So on average the conditions are poor that month.

February
March
April
Max temperature
1°C (34°F)
5°C (41°F)
10°C (50°F)
Min temperature
-7°C (19°F)
-3°C (27°F)
2°C (36°F)
Monthly sun hours
111 hours
161 hours
180 hours
Monthly snow/rainfall
68 mm (2.7 in)
70 mm (2.8 in)
95 mm (3.7 in)
Monthly rainy days
10 days
10 days
11 days
Weather conditions

Ottawa

In March Ottawa generally has low temperatures with maximum daytime temperatures around 4°C (39°F), minimum nighttime temperatures around -7°C (19°F) and moderate monthly snow/rainfall. So on average the conditions are poor that month.

February
March
April
Max temperature
-2°C (28°F)
4°C (39°F)
12°C (54°F)
Min temperature
-14°C (7°F)
-7°C (19°F)
1°C (34°F)
Monthly sun hours
132 hours
168 hours
188 hours
Monthly snow/rainfall
69 mm (2.7 in)
76 mm (3 in)
98 mm (3.9 in)
Monthly rainy days
12 days
11 days
11 days
Weather conditions

Niagara Falls

In March Niagara Falls generally has low temperatures with maximum daytime temperatures around 6°C (43°F), minimum nighttime temperatures around -3°C (27°F) and moderate monthly snow/rainfall. So on average the conditions are poor that month.

February
March
April
Max temperature
-1°C (30°F)
6°C (43°F)
13°C (55°F)
Min temperature
-8°C (18°F)
-3°C (27°F)
2°C (36°F)
Monthly sun hours
109 hours
165 hours
206 hours
Monthly snow/rainfall
67 mm (2.6 in)
59 mm (2.3 in)
80 mm (3.1 in)
Monthly rainy days
16 days
11 days
13 days
Weather conditions

Mississauga

In March Mississauga generally has low temperatures with maximum daytime temperatures around 6°C (43°F), minimum nighttime temperatures around -4°C (25°F) and moderate monthly snow/rainfall. So on average the conditions are poor that month.

February
March
April
Max temperature
1°C (34°F)
6°C (43°F)
11°C (52°F)
Min temperature
-8°C (18°F)
-4°C (25°F)
2°C (36°F)
Monthly sun hours
113 hours
161 hours
205 hours
Monthly snow/rainfall
66 mm (2.6 in)
68 mm (2.7 in)
93 mm (3.7 in)
Monthly rainy days
9 days
10 days
11 days
Weather conditions

Niagara on the Lake

In March Niagara on the Lake generally has low temperatures with maximum daytime temperatures around 5°C (41°F), minimum nighttime temperatures around -3°C (27°F) and moderate monthly snow/rainfall. So on average the conditions are poor that month.

February
March
April
Max temperature
0°C (32°F)
5°C (41°F)
10°C (50°F)
Min temperature
-5°C (23°F)
-3°C (27°F)
1°C (34°F)
Monthly sun hours
109 hours
165 hours
206 hours
Monthly snow/rainfall
48 mm (1.9 in)
45 mm (1.8 in)
59 mm (2.3 in)
Monthly rainy days
11 days
8 days
10 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Ontario, in Canada.

Popular cities in March

Day & night temperatures, rainfall and average weather in Ontario in March.

City Weather Day temp Night temp Rainfall
Toronto 5°C (41°F) -3°C (27°F) 70 mm (2.8 in)
Ottawa 4°C (39°F) -7°C (19°F) 76 mm (3 in)
Niagara Falls 6°C (43°F) -3°C (27°F) 59 mm (2.3 in)
Mississauga 6°C (43°F) -4°C (25°F) 68 mm (2.7 in)
Niagara on the Lake 5°C (41°F) -3°C (27°F) 45 mm (1.8 in)
Kingston 4°C (39°F) -4°C (25°F) 78 mm (3.1 in)

Ontario weather in March: frequently asked questions

What is the weather like in Ontario, Canada in March?

March in Ontario, Canada brings poor weather. In Toronto, daytime temperatures are typically around 5°C (41°F) and nighttime lows hover near -3°C (27°F).

What is the average temperature in Ontario, Canada in March?

Daytime temperatures in Toronto peak at roughly 5°C (41°F) in March, dropping to about -3°C (27°F) overnight.

Does Ontario, Canada get a lot of snow/rain in March?

Not particularly. Toronto averages just 70 mm (2.8 in) of snow/rain in March, making it a mostly dry month for Ontario, Canada.

Is March a Good Time to Visit Ontario, Canada?

Given the typically poor weather conditions in Toronto, March may not be the ideal time to visit Ontario, Canada.

On average, the best time to visit Ontario, Canada is in June, July, August and September with generally perfect weather in Toronto. On the other hand, the months of January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Ontario.

Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

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