The best times to visit Oshawa for ideal weather are

June 4th to September 9th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.


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    Weather in Oshawa

    Temperature

    Average temperatures in Oshawa vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a low chance of precipitation most of the year. The area is somewhat temperate — in the 41st 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 Oshawa, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 79.5°F (26.4°C) with temperatures rarely dropping below 59.1°F (15.1°C) at night.

    Oshawa Temperatures (Fahrenheit)

    Key
    High
    Average
    Low

    Oshawa Temperatures (Celsius)

    Key
    High
    Average
    Low

    “Feels-Like” Temperatures

    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.

    Oshawa Perceived Temperature (F)

    Key
    High
    Average
    Low

    Oshawa Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    Average Oshawa 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.

    Show Fahrenheit

    MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
    Jan20.811.83.4
    Feb21.210.20.2
    Mar35.223.212.8
    Apr49.83827.8
    May63.351.541.3
    Jun72.261.351.5
    Jul77.666.756.8
    Aug75.364.554.5
    Sep68.257.547.8
    Oct54.445.638
    Nov41.833.926.1
    Dec26.719.111.7

    Show Celsius

    MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
    Jan-6.2-11.2-15.9
    Feb-6-12.1-17.7
    Mar1.8-4.9-10.7
    Apr9.93.3-2.3
    May17.410.85.2
    Jun22.316.310.8
    Jul25.319.313.8
    Aug24.118.112.5
    Sep20.114.28.8
    Oct12.47.63.3
    Nov5.41.1-3.3
    Dec-2.9-7.2-11.3


     

    Precipitation (Rain or Snow)

    If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Oshawa are March, February, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late March. For example, on the week of March 26th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid October with an average of 2 days of significant precipitation the week of October 15th.

    When can you find snow in Oshawa? Weather stations report no annual snow. 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.

    Chanceof Precipitation

    The graph below shows the % chance of rainy and snowy days in Oshawa.

    Key
    Days with precipitation

    Snow on the Ground

    The graph below shows the average snow on the ground in Oshawa (in).

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
    Jan10%00.9
    Feb8%00.9
    Mar8%00.9
    Apr15%01.8
    May10%01.2
    Jun17%02.6
    Jul9%01.4
    Aug13%02.9
    Sep12%02
    Oct18%02.4
    Nov12%01.6
    Dec9%01.2

    Show Centimeters

    MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
    Jan1002.3
    Feb802.3
    Mar802.3
    Apr1504.6
    May1003
    Jun1706.6
    Jul903.6
    Aug1307.4
    Sep1205.1
    Oct1806.1
    Nov1204.1
    Dec903

     

    Humidity and Wind

    Oshawa has some very humid months, with other comfortably humid months. The least humid month is April (53.2% relative humidity), and the most humid month is October (73.3%).

    Wind in Oshawa is usually calm. The windiest month is April, followed by March and January. April’s average wind speed of around 7.6 knots (8.7 MPH or 14 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early April where average top sustained speeds reach 15.4 knots, which is considered a moderate breeze.

    Relative Humidity (%)

    The graph below shows the average % humidity by month in Oshawa.

    Key
    Avg. Relative Humidity

    Wind

    The graph below shows wind speed (max and average) in knots.

    Key
    Max Sustained Wind
    Average Daily Wind

    Average Wind Speeds

    Show Wind Speeds

    All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

    MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
    Jan6.9Light breeze12.7Significant breeze
    Feb6.7Light breeze12.7Significant breeze
    Mar7.4Gentle breeze13.4Significant breeze
    Apr7.6Gentle breeze14.3Significant breeze
    May6.7Light breeze12.7Significant breeze
    Jun6.1Light breeze12.4Significant breeze
    Jul5.7Light breeze11.4Significant breeze
    Aug5.8Light breeze11.7Significant breeze
    Sep6.1Light breeze12.1Significant breeze
    Oct6.6Light breeze12.5Significant breeze
    Nov6.9Light breeze12.9Significant breeze
    Dec6.7Light breeze12Significant breeze

    Show Relative Humidity by Month

    MonthAvg. Relative Humidity
    Jan64.5%
    Feb58.5%
    Mar55.9%
    Apr53.2%
    May56.6%
    Jun64%
    Jul63.8%
    Aug68.5%
    Sep72.2%
    Oct73.3%
    Nov68.9%
    Dec69.8%

     

    Is it Safe to Travel to Oshawa?

    Our best data indicates this area is generally safe. As of Mar 17, 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 Mar 17, 2019.


     

    The Busiest and Least Crowded Months

    The busiest month for tourism in Oshawa, ON, CA is August, followed by July and September. 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 Oshawa in December. Those willing to visit at these times will likely find it the least expensive month.

    Estimated Tourism by Month

     

    Most Popular Months to Visit

    Key
    Tourists Seeking Accommodations

    Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 36.6 in December means 36.6% of the tourists vs. August.


    Overall Oshawa Travel Experience by Season

    Spring (March through May)

    Humidity and temperatures combine to make this season feel moderately cold. Highs range from 67.7°F (19.8°C) and 24°F (-4.4°C) with far warmer temperatures in the later months. Rain is rare with 2 to 4 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

    Summer (June through August)

    The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see moderate precipitation with 3 to 5 days of precipitation per month. June – August is the busiest season for tourism in Oshawa, so lodging and other accommodations may cost more than usual.

    Fall (September through November)

    Fall daily highs range from 71.6°F (22°C) and 33.7°F (0.9°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 4 to 5 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

    Winter (December through February)

    Weather is far too cold this time of year in Oshawa to be enjoyable for warm weather travelers. The average high during this season is between 28.8°F (-1.8°C) and 17.2°F (-8.2°C). On average, it rains or snows a smalll amount: 2 to 3 times per month. These times of year are the slowest with tourists.

     

    Best Times to TravelCanada › Oshawa, ON, CA


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