Winter (December to February)
Sharp cold with highs around 1° and lows near -6°, regular rain (11 rainy days per month on average). Not an ideal time for a leisure trip.
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When to visit Canada
Climate · 10-year averages
When to visit Oshawa?
Best time to visit Oshawa: from May to September. Month-by-month temperatures, rainfall and sunshine, based on ten years of weather data.
Best time to go
From May to September
Hottest month
July · 25°
Coldest month
February · -8°
Wettest month
October · 102 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
-1° / -8°
- Rain
- 69 mm · 11 d
- Sunshine
- 5.1 h/day
- Humidity
- 72%
- FebruaryÀ éviter
-0° / -8°
- Rain
- 68 mm · 11 d
- Sunshine
- 6.2 h/day
- Humidity
- 71%
- MarchÀ éviter
4° / -4°
- Rain
- 71 mm · 11 d
- Sunshine
- 7.7 h/day
- Humidity
- 68%
- AprilÀ éviter
10° / 2°
- Rain
- 102 mm · 12 d
- Sunshine
- 9.0 h/day
- Humidity
- 68%
- MayTrès bien
16° / 8°
- Rain
- 69 mm · 10 d
- Sunshine
- 11.0 h/day
- Humidity
- 71%
- JuneIdéal
22° / 14°
- Rain
- 87 mm · 10 d
- Sunshine
- 12.1 h/day
- Humidity
- 73%
- JulyIdéal
25° / 18°
- Rain
- 78 mm · 10 d
- Sunshine
- 12.6 h/day
- Humidity
- 74%
- AugustIdéal
25° / 17°
- Rain
- 72 mm · 10 d
- Sunshine
- 11.6 h/day
- Humidity
- 75%
- SeptemberIdéal
21° / 14°
- Rain
- 66 mm · 9 d
- Sunshine
- 10.0 h/day
- Humidity
- 75%
- OctoberMitigé
15° / 8°
- Rain
- 102 mm · 13 d
- Sunshine
- 6.9 h/day
- Humidity
- 75%
- NovemberÀ éviter
7° / 1°
- Rain
- 73 mm · 11 d
- Sunshine
- 5.6 h/day
- Humidity
- 74%
- DecemberÀ éviter
3° / -3°
- Rain
- 78 mm · 12 d
- Sunshine
- 4.3 h/day
- Humidity
- 76%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Cool weather with highs around 10° and lows near 2°, regular rain (11 rainy days per month on average). Not an ideal time for a leisure trip.
Summer (June to August)
Mild weather with highs around 24° and lows near 16°, regular rain (10 rainy days per month on average). It's a great time to go.
Fall (September to November)
Cool weather with highs around 14° and lows near 8°, regular rain (11 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Frequently asked questions
- When is the best time to visit Oshawa?
- The best time to visit Oshawa is from May to September, with highs between 16° and 25° and few rainy days.
- What is the hottest month in Oshawa?
- July is the hottest month, with an average high of 25 °C.
- What is the coldest month in Oshawa?
- February is the coldest month, with an average low of -8 °C.
- When does it rain the most in Oshawa?
- October is the wettest month (102 mm, about 13 rainy days). The driest is September (66 mm).
- When should you avoid Oshawa?
- The least favorable months are from November to April: too hot, too cold, or too rainy to make the most of your trip.
More practical info: Canada
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
- Air qualityPollution, fine particulate matter, and ozone, with a 36-hour forecast.
- Local timeLive clock, time zone, and time difference from where you are.
- Public holidaysEvery public holiday of the year, plus the next one coming up.
- Power OutletsPlug type, voltage, and whether your devices need an adapter.
- Driving SideWhich side of the road to drive on and which license you need before renting a car.
- Emergency NumbersPolice, ambulance, and fire department numbers for every country.
- TippingHow much to tip at restaurants, in taxis, and at hotels.
- Dialing CodesHow to call a country from abroad.
- Salat TimesFajr, Dhuhr, Asr, Maghrib, Isha, and Imsak times in every capital.
- QiblaReal-time compass pointing to the Kaaba from your GPS location.
- Visa requirements from FranceDo you need a visa for Canada?