The best times to visit Northern Ontario for ideal weather are
June 11th to September 16th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Northern Ontario Travel Guide
Other Northern Ontario Travel Info
Weather in Northern Ontario
Average temperatures in Northern Ontario vary an incredible amount. Considering humidity, temperatures feel cold for most of the year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 24th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Northern Ontario, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 76.5°F (24.7°C) with temperatures rarely dropping below 53.7°F (12.1°C) at night.
Northern Ontario Temperatures (Fahrenheit)
Northern Ontario Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Northern Ontario Perceived Temperature (F)
Northern Ontario Perceived Temperature (C)
Average Northern Ontario Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Northern Ontario are February, December, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late February and early March. For example, on the week of February 26th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May to early June with an average of 3 days of significant precipitation the week of May 28th.
When can you find snow in Northern Ontario? Weather stations report very large amounts of snow likely to be deepest around March, especially close to early to mid September. The best time to ski (if at all) in Northern Ontario is often around around December 3rd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Northern Ontario.
Snow on the Ground
The graph below shows the average snow on the ground in Northern Ontario (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Northern Ontario has some very humid months, with other comfortably humid months. The least humid month is April (51% relative humidity), and the most humid month is November (76.8%).
Wind in Northern Ontario is usually calm. The windiest month is May, followed by April and November. May’s average wind speed of around 6.3 knots (7.3 MPH or 11.7 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid May where average top sustained speeds reach 13.5 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Northern Ontario.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||5.4||Light breeze||10.6||Gentle breeze|
|Feb||5.4||Light breeze||11.2||Significant breeze|
|Mar||5.7||Light breeze||12||Gentle breeze|
|Apr||6.3||Light breeze||13||Significant breeze|
|May||6.3||Light breeze||12.9||Gentle breeze|
|Jun||5.5||Light breeze||12.3||Significant breeze|
|Jul||5.6||Light breeze||12.7||Gentle breeze|
|Aug||5.4||Light breeze||12||Significant breeze|
|Sep||5.8||Light breeze||12.4||Gentle breeze|
|Oct||5.9||Light breeze||12||Significant breeze|
|Nov||6.1||Light breeze||11.9||Gentle breeze|
|Dec||5.3||Light breeze||10.8||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Northern Ontario?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Canada; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 07, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Northern Ontario, Canada is July, followed by June and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Northern Ontario in November. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Northern Ontario Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel very cold. Highs range from 66°F (18.9°C) and 19.6°F (-6.9°C) with far warmer temperatures in the later months. Rain is somewhat common with 4 to 8 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the most precipitation with 8 to 9 days of precipitation per month. June – August is the busiest season for tourism in Northern Ontario, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 69.8°F (21°C) and 23°F (-5°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 7 to 8 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Winter (December through February)
Weather is far too cold this time of year in Northern Ontario to be enjoyable for warm weather travelers. The average high during this season is between 20°F (-6.7°C) and 10.4°F (-12°C). On average, it rains or snows a fair amount: 3 to 5 times per month. These times of year are fairly slow with tourists.