Ontario weather

Usually in March
- 39
- 25
- 5
Weather by month
Now Today
- 39
- 0
5-day forecast

Below are the temperatures expected today at popular destinations in Ontario. Select a destination to compare today's forecast with average weather conditions.

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Recommended for Ontario

The weather guide for Ontario (Toronto) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

When is the best time to go to Ontario?

The best time to go to Ontario (Toronto) is July based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0.5
Feb
1
Mar
1.5
Apr
2.5
May
4
Jun
4.5
Jul
4
Aug
3.5
Sep
1
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

28
Jan
28
Feb
39
Mar
52
Apr
64
May
75
Jun
81
Jul
77
Aug
70
Sep
57
Oct
45
Nov
32
Dec

Hours of Sunshine (daily)

3
Jan
4
Feb
5
Mar
6
Apr
7
May
9
Jun
9
Jul
8
Aug
6
Sep
5
Oct
3
Nov
2
Dec

Best time to go for the weather

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

Metric (°C) | Imperial (°F)

More about Canada

Which is the hottest month in Ontario?

The hottest time of year in Toronto, Ontario is normally July. Expect maximum daytime temperatures to reach 81°F with low heat and humidity.

Which month has the most rain in Ontario?

In terms of rainfall, August is usually the wettest month in Toronto, Ontario with 3.3 inches on average. There are normally 10 days in August with some rain.

When is it sunniest in Ontario?

The sunniest time of year in Toronto, Ontario is normally July with bright sunshine on average for 60% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Ontario?

The sea is usually at its warmest in Toronto, Ontario in August when the water temperature reaches 70°F.

What is the flight time to Ontario from the UK?

The flight time to Ontario from the UK is typically 8 hours.

What is the time difference between Ontario and the UK?

The time difference between Ontario and the UK is GMT-5 to GMT-6 hours.

What is the main language spoken in Ontario?

The main languages spoken in Ontario are English and French.

Learn a language for Ontario with Busuu^*, Lingoda^* and Mondly^*.

What is the currency in Ontario?

The currency in Ontario is the Canadian Dollar (CAD).

Send money to Ontario with XE Money Transfers^*.

Which plugs are used in Ontario?

Ontario uses electrical plug type A + B (120 Volts).

Which side of the road do they drive on in Ontario?

They drive on the right side of the road in Ontario.

Do you need a visa for Ontario?

Yes, UK passport holders do need a visa to enter Ontario.

Check Canada visa requirements for all passport holders with VisaHQ^* and iVisa.com^*.

Compare Ontario weather with the USA

Below the Ontario weather chart shows average maximum daytime temperature for Ontario, Canada (Toronto) and the USA (Washington).

Maximum daytime temperature (°F)

Ontario, Canada (Toronto)

USA (Washington)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec