Toronto

Ontario Weather in June

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

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Toronto Ottawa Niagara Falls Mississauga

Considering a trip to Ontario, Canada this June and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Ontario in June

Ontario, Canada is a region in Canada. The weather in Ontario in June can be quite varied, with temperatures that range from mild to warm and precipitation levels ranging from moderate to high.

Temperatures

Based on our climate data spanning from 1990-2020, the average maximum temperature is mild in Schreiber at 14°C (57°F) to warm in Amherstburg at 26°C (79°F). Nighttime temperatures generally drop to 18°C (64°F) in Amherstburg and 8°C (46°F) in Schreiber.

To learn more about the conditions in specific areas of Ontario, Canada, check out the map below.

Precipitation

In June, precipitation varies across different areas. From moderate rainfall in Niagara on the Lake with an average of 63 mm (2.5 in) to high rainfall in Dryden with 119 mm (4.7 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. Toronto enjoys about 260 hours of sunlight, ideal for those seeking sunny weather.

Explore Ontario by month

Pick a month to see the average temperature, rainfall and sunshine in Ontario — and find the best time to visit. (based on Toronto)

January1°C (34°F) February1°C (34°F) March5°C (41°F) April10°C (50°F) May16°C (61°F) June22°C (72°F) This monthJuly26°C (79°F) August26°C (79°F) September22°C (72°F) October16°C (61°F) November9°C (48°F) December4°C (39°F)
Best Time to Visit Ontario →

Best Places to Visit in Ontario in June

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

Conditions Temperatures Precipitation
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 June for some of the most popular destinations in Ontario, Canada?

Temperature range in Ontario (June)

Precipitation variation in Ontario (June)

Toronto

In June Toronto generally has pleasant temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« May
June
July »
May
June
July
Max temperature
16°C (61°F)
22°C (72°F)
26°C (79°F)
Min temperature
8°C (46°F)
14°C (57°F)
18°C (64°F)
Monthly sun hours
227 hours
260 hours
280 hours
Monthly rainfall
80 mm (3.1 in)
83 mm (3.3 in)
71 mm (2.8 in)
Monthly rainy days
11 days
10 days
9 days
Weather conditions
tolerable
perfect
perfect
Climate in Toronto →

Ottawa

In June Ottawa generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 12°C (54°F) and high monthly rainfall. So on average the conditions are pleasant that month.

« May
June
July »
May
June
July
Max temperature
20°C (68°F)
25°C (77°F)
27°C (81°F)
Min temperature
7°C (45°F)
12°C (54°F)
15°C (59°F)
Monthly sun hours
231 hours
255 hours
280 hours
Monthly rainfall
93 mm (3.7 in)
105 mm (4.1 in)
102 mm (4 in)
Monthly rainy days
12 days
12 days
11 days
Weather conditions
perfect
pleasant
pleasant
Climate in Ottawa →

Niagara Falls

In June Niagara Falls generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« May
June
July »
May
June
July
Max temperature
21°C (70°F)
25°C (77°F)
27°C (81°F)
Min temperature
9°C (48°F)
14°C (57°F)
17°C (63°F)
Monthly sun hours
259 hours
290 hours
307 hours
Monthly rainfall
67 mm (2.6 in)
90 mm (3.5 in)
90 mm (3.5 in)
Monthly rainy days
13 days
13 days
12 days
Weather conditions
perfect
perfect
perfect
Climate in Niagara Falls →

Mississauga

In June Mississauga generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« May
June
July »
May
June
July
Max temperature
18°C (64°F)
23°C (73°F)
27°C (81°F)
Min temperature
8°C (46°F)
14°C (57°F)
17°C (63°F)
Monthly sun hours
230 hours
261 hours
295 hours
Monthly rainfall
82 mm (3.2 in)
87 mm (3.4 in)
76 mm (3 in)
Monthly rainy days
11 days
10 days
9 days
Weather conditions
pleasant
perfect
perfect
Climate in Mississauga →

Niagara on the Lake

In June Niagara on the Lake generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« May
June
July »
May
June
July
Max temperature
15°C (59°F)
18°C (64°F)
20°C (68°F)
Min temperature
6°C (43°F)
10°C (50°F)
12°C (54°F)
Monthly sun hours
259 hours
290 hours
307 hours
Monthly rainfall
47 mm (1.9 in)
63 mm (2.5 in)
53 mm (2.1 in)
Monthly rainy days
9 days
9 days
9 days
Weather conditions
tolerable
pleasant
perfect
Climate in Niagara on the Lake →

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

In our records: Canada June extremes

Notable June records observed across cities in Canada in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest June day in Canada reached 46°C (115°F) in Kamloops on June 30, 2021.

Popular cities in June

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

City Weather Day temp Night temp Rainfall
Toronto 22°C (72°F) 14°C (57°F) 83 mm (3.3 in)
Ottawa 25°C (77°F) 12°C (54°F) 105 mm (4.1 in)
Niagara Falls 25°C (77°F) 14°C (57°F) 90 mm (3.5 in)
Mississauga 23°C (73°F) 14°C (57°F) 87 mm (3.4 in)
Niagara on the Lake 18°C (64°F) 10°C (50°F) 63 mm (2.5 in)
Kingston 23°C (73°F) 15°C (59°F) 104 mm (4.1 in)

Ontario weather in June: frequently asked questions

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

June in Ontario, Canada brings perfect weather. In Toronto, daytime temperatures are typically around 22°C (72°F) and nighttime lows hover near 14°C (57°F).

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

Toronto averages a daytime maximum of 22°C (72°F) in June, with overnight lows close to 14°C (57°F).

Does Ontario, Canada get a lot of rain in June?

Rain is generally moderate to light in Ontario, Canada during June, with Toronto averaging close to 83 mm (3.3 in).

Is June a Good Time to Visit Ontario, Canada?

We consider June to be one of the best times to travel to Ontario, Canada. Typically, the climate in Toronto is perfect. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in June, July, August and September offering mostly 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.

Visit Algonquin Park

Algonquin park is one of the best places to experience the Canadian wilderness and learn more about the nation’s cultural history. It is open year round and offers a variety of activities depending on the season.
Canoeing the south Nahannii

The South Nahanni in the northwest of Canada is one of the most impressive wilderness rivers in the world. Canoeing the south Nahanni is something you must add to your bucket list.
See Polar Bears in Churchill Canada

Thousands of bears gather at the small town of Churchill. In the evening the northern lights give a light show against the dark evening sky. An unforgettable experience.
Banff National Park

Snowy mountains, clear blue lakes and green forests make Banff National Park a wonderful bucket list destination. The pristine wilderness is a mecca for walkers.
Must visit in Canada →