Which is the hottest month in Ontario?

The hottest time of year in Toronto, Ontario is normally July. Expect maximum daytime temperatures to reach 27°C with low heat and humidity.

Best time to visit Ontario

Q: When is the best time to visit Ontario?

The best time to visit Ontario (Toronto) is July based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in Ontario?

In terms of rainfall, August is usually the wettest month in Toronto, Ontario with 83mm on average. There are normally 10 days in August with some rain.

Q: 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.

Q: When is the sea warmest in Ontario?

The sea is usually at its warmest in Toronto, Ontario in August when the water temperature reaches 21°C.

Find the best time to visit Ontario and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Ontario by month

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

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Top Ontario destinations

Below are the temperatures expected today at popular countries, regions and places in Ontario. Select a destination to compare today's forecast with average weather conditions.

All Ontario destinations

When is the best time to visit Ontario?

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

Maximum daytime temperature = 22 - 30°C [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 (°C)

-2
Jan
-2
Feb
4
Mar
11
Apr
18
May
24
Jun
27
Jul
25
Aug
21
Sep
14
Oct
7
Nov
0
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 visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

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.

Metric (°C / mm) | Imperial (°F / inches)

More about Ontario

Explore our complete guide to Ontario with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for Ontario.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

Ontario travel guide - essential info

Below is a beginner's guide to Ontario with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

Ontario - quick facts
Flight time^✝	8 hours
Time difference	UK -5 to -6 hours
Language(s)	English, French
Currency	Canadian Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes

Why visit Ontario?

Considering a holiday to the Ontario? Here are some of the very good reasons it makes such a wonderful holiday destination such as for its nature to ensure you get the most out of your 2025/2026 escape.

Nature

Ontario tourist information

Destination Ontario

✝ = Typical flight time from the UK and visa requirements for UK travellers.

Travelling to Ontario?
Holidays Hotels Flights eSIMs Travel insurance

Ontario travel guidance

Check the latest travel guidance and advice on visiting Ontario from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for Ontario - UK FCDO
Irish traveller advice for Ontario - Department of Foreign Affairs, Ireland
Safe travel advisories for Ontario - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for Ontario - Department of Foreign Affairs, Australia

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around Ontario.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

Ontario travel health

Find out more about staying safe when travelling to Ontario with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for Ontario - CDC
Health & vaccinations for Ontario - TravelHealthPro, NaTHNac
How to stay safe & healthy in Ontario - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in Ontario, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

Ontario travel features

Do you want to learn more about Ontario? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Ontario.

Ontario FAQs

Read our frequently asked questions about travelling to Ontario including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in Ontario?

In terms of rainfall, January is usually the wettest month in Toronto, Ontario with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in Ontario?

The sunniest time of year in Toronto, Ontario is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in Ontario?

The sea is usually at its warmest in Toronto, Ontario in January when the water temperature reaches 0°C.

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 UK time-5 to UK time-6 hours.

What is the main language spoken in Ontario?

The main languages spoken in Ontario are English and French.

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What is the currency in Ontario?

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

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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.

Find out more about driving in Canada with International Drivers Association^*.

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^*.

Ontario travel deals

Holidays to Ontario

Check out the latest deals, discount codes and special offers on holidays to Ontario in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.