Thousand Islands National Park Weather in June

Average temperatures, rainfall, sunshine and the best places to visit in Thousand Islands National Park, Canada in June.

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Brockville

Considering a trip to Thousand Islands National Park, 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 Thousand Islands National Park in June

Thousand Islands National Park, Canada is a region in Canada. June in Thousand Islands National Park generally has warm temperatures, with high precipitation. During June, summer is in full swing.

Temperatures

You can expect warm maximum daytime temperatures of around 23°C (73°F) and nighttime temperatures around 14°C (57°F) in Brockville.

For a closer look at conditions across Thousand Islands National Park, Canada, refer to the map below.

Precipitation

June is a rainy month with an average rainfall of around 113 mm (4.4 in) in Brockville.

Average sunshine

Several destinations enjoy plenty of sunshine this month. Brockville sees close to 245 hours of sunlight, making it great for sun lovers.

Explore Thousand Islands National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Thousand Islands National Park — and find the best time to visit. (based on Brockville)

January-2°C (28°F) February-3°C (27°F) March4°C (39°F) April12°C (54°F) May20°C (68°F) June23°C (73°F) This monthJuly26°C (79°F) August26°C (79°F) September22°C (72°F) October14°C (57°F) November8°C (46°F) December1°C (34°F)
Best Time to Visit Thousand Islands National Park →

Best Places to Visit in Thousand Islands National Park in June

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Thousand Islands National Park.

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 Thousand Islands National Park

What is the weather like in June for the most popular destinonation in Thousand Islands National Park, Canada?

Brockville

In June Brockville generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 14°C (57°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)
23°C (73°F)
26°C (79°F)
Min temperature
9°C (48°F)
14°C (57°F)
17°C (63°F)
Monthly sun hours
220 hours
245 hours
280 hours
Monthly rainfall
84 mm (3.3 in)
113 mm (4.4 in)
92 mm (3.6 in)
Monthly rainy days
13 days
15 days
13 days
Weather conditions
perfect
pleasant
perfect
Climate in Brockville →

Is your destination not in the list? Have a look at all destinations in Thousand Islands National Park, 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.

Thousand Islands National Park weather in June: frequently asked questions

What is the weather like in Thousand Islands National Park, Canada in June?

June in Thousand Islands National Park, Canada brings pleasant weather. In Brockville, daytime temperatures are typically around 23°C (73°F) and nighttime lows hover near 14°C (57°F).

What is the average temperature in Thousand Islands National Park, Canada in June?

Average temperatures in Thousand Islands National Park, Canada during June range from a nighttime low near 14°C (57°F) to a daytime high around 23°C (73°F) in Brockville.

Does Thousand Islands National Park, Canada get a lot of rain in June?

Yes, June tends to be a wetter month in Thousand Islands National Park, Canada. Average rainfall in Brockville sits around 113 mm (4.4 in).

Is June a Good Time to Visit Thousand Islands National Park, Canada?

Given the typically pleasant weather conditions in Brockville, June might be a good time to visit Thousand Islands National Park, Canada. However, the weather conditions may vary depending on your destination.

Generally speaking, May, July, August and September provide perfect weather in Brockville. On the other hand, the weather in January, February, March, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Thousand Islands National Park.

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.

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