Weather radar Ottawa
Real-time precipitation radar · Ontario · Canada
Ottawa climate table – average temperature, precipitation & sunshine hours
The climate table for Ottawa shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | -4.1° | -2° | 4.9° | 12.6° | 20.3° | 24.4° | 26.3° | 25.5° | 22° | 15.8° | 5.8° | -0.4° |
| Avg low (°C) | -11.9° | -12.7° | -4.9° | 1.9° | 8.3° | 13.7° | 15.9° | 15° | 10.6° | 5.6° | -1.3° | -7.3° |
| Precipitation (mm) | 63 | 65 | 82 | 113 | 88 | 116 | 113 | 107 | 69 | 86 | 71 | 97 |
| Rainy days | 10 | 12 | 13 | 14 | 12 | 14 | 13 | 12 | 8 | 10 | 12 | 15 |
| Sunshine hours | 154 | 176 | 239 | 258 | 321 | 323 | 364 | 322 | 280 | 212 | 148 | 112 |
| Humidity | 77% | 73% | 67% | 64% | 64% | 71% | 75% | 77% | 78% | 78% | 77% | 80% |
Best time to visit Ottawa
The best time to visit Ottawa is typically September. In this month the average high is 22°C, precipitation is 69 mm and sunshine duration is 280 hours. The annual average high is 12.6°C, total annual precipitation is 1070 mm (145 rainy days/year) and annual sunshine is 2909 hours.
Frequently asked questions about the weather in Ottawa
How up to date is the weather radar for Ottawa?
The weather radar for Ottawa is updated every 5 minutes with new radar data from the OPERA composite radar. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for Ottawa?
Besides the rain radar, RadarWeather provides for Ottawa: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in Ottawa?
The thunderstorm potential for Ottawa is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near Ottawa.
What is the climate like in Ottawa?
Ottawa has an annual average high of 12.6°C. The warmest month is July (avg high 26.3°C), the coldest February (avg low -12.7°C). The wettest month is June with 116 mm, the driest January with 63 mm. Total annual precipitation is 1070 mm (145 rainy days). Annual sunshine is 2909 hours.
Weather radar near Ottawa
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