Winter (December to February)
Sharp cold with highs around -2° and lows near -11°, regular rain (12 rainy days per month on average). Not an ideal time for a leisure trip.
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Climate · 10-year averages
When to visit Ottawa?
Best time to visit Ottawa: 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 · 26°
Coldest month
January · -14°
Wettest month
June · 113 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
-4° / -14°
- Rain
- 73 mm · 11 d
- Sunshine
- 5.0 h/day
- Humidity
- 76%
- FebruaryÀ éviter
-3° / -13°
- Rain
- 76 mm · 12 d
- Sunshine
- 6.1 h/day
- Humidity
- 73%
- MarchÀ éviter
2° / -8°
- Rain
- 79 mm · 11 d
- Sunshine
- 7.5 h/day
- Humidity
- 71%
- AprilÀ éviter
11° / -0°
- Rain
- 107 mm · 12 d
- Sunshine
- 8.3 h/day
- Humidity
- 66%
- MayTrès bien
19° / 7°
- Rain
- 83 mm · 11 d
- Sunshine
- 10.5 h/day
- Humidity
- 65%
- JuneTrès bien
23° / 13°
- Rain
- 113 mm · 12 d
- Sunshine
- 10.9 h/day
- Humidity
- 70%
- JulyTrès bien
26° / 17°
- Rain
- 107 mm · 13 d
- Sunshine
- 12.0 h/day
- Humidity
- 72%
- AugustTrès bien
25° / 16°
- Rain
- 108 mm · 12 d
- Sunshine
- 10.9 h/day
- Humidity
- 76%
- SeptemberIdéal
21° / 13°
- Rain
- 78 mm · 10 d
- Sunshine
- 9.4 h/day
- Humidity
- 76%
- OctoberMitigé
14° / 7°
- Rain
- 112 mm · 13 d
- Sunshine
- 6.3 h/day
- Humidity
- 77%
- NovemberÀ éviter
6° / -1°
- Rain
- 75 mm · 12 d
- Sunshine
- 5.0 h/day
- Humidity
- 76%
- DecemberÀ éviter
0° / -7°
- Rain
- 85 mm · 12 d
- Sunshine
- 3.8 h/day
- Humidity
- 77%
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 11° and lows near -0°, regular rain (11 rainy days per month on average). Not an ideal time for a leisure trip.
Summer (June to August)
Pleasant warmth with highs around 25° and lows near 15°, regular rain (12 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 6°, regular rain (11 rainy days per month on average). Not an ideal time for a leisure trip.
Frequently asked questions
- When is the best time to visit Ottawa?
- The best time to visit Ottawa is from May to September, with highs between 19° and 26° and few rainy days.
- What is the hottest month in Ottawa?
- July is the hottest month, with an average high of 26 °C.
- What is the coldest month in Ottawa?
- January is the coldest month, with an average low of -14 °C.
- When does it rain the most in Ottawa?
- June is the wettest month (113 mm, about 12 rainy days). The driest is January (73 mm).
- When should you avoid Ottawa?
- 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?