Live weather forecast for Ottawa South
This page shows a live weather forecast for Ottawa South, Canada, updated on every visit. You get the current temperature and how it feels, wind, humidity and pressure, an hourly chart for the next 48 hours, and a 16-day daily outlook with highs, lows and the chance of precipitation.
We also surface air quality (European AQI, PM2.5 and PM10), the UV index, sunrise and sunset times, and — for coastal locations — a short marine outlook. All data comes from Open-Meteo's open weather APIs and is free to use.
On average, the warmest month in Ottawa South is Jul (21°C) and the coldest is Jan (-8°C). The wettest month is Jul (about 140 mm of rainfall), while Nov is the driest. The annual average temperature is around 7.9°C, with roughly 1091 mm of precipitation per year.
FAQ
How accurate is this forecast?
Forecasts use Open-Meteo, which blends leading national weather models (such as ECMWF, GFS and ICON). Hourly accuracy is high for the next 1–3 days and decreases further out, as with any forecast.
How often does the weather update?
The forecast is fetched live from the weather API each time you open the page, so you always see the latest available model run.
Can I switch between °C and °F?
Yes — use the °C / °F toggle above the current conditions. Your choice is remembered on this device.