Toronto averages about 830 mm (roughly 33 inches) of precipitation a year, spread fairly evenly across the seasons between rain and, in winter, a mix of rain and snow off Lake Ontario. Summer brings the highest risk of sudden, intense thunderstorms, some capable of producing damaging wind and hail as warm, humid air moves up from the Great Lakes and collides with cooler fronts. Because the city’s storm sewer system dates back many decades in older neighborhoods, short bursts of heavy rain can overwhelm drainage faster than the total rainfall would suggest, leading to localized flooding on major roads and underpasses. Lake-effect weather also means conditions can shift quickly near the shoreline compared with areas further inland. Environment Canada’s weather radar network covers the Greater Toronto Area, giving residents a practical way to see an approaching squall line or lake-effect band before it reaches downtown.
Rain in Toronto by month
Toronto gets about 774 mm (30.5 in) of rain in an average year. The wettest month is July, with 75 mm (3.0 in), and the driest is February, with 49 mm (1.9 in).
| Month | Average rain | Average temperature |
|---|---|---|
| January | 54 mm (2.1 in) | -2.7 °C (27 °F) |
| February | 49 mm (1.9 in) | -2.8 °C (27 °F) |
| March | 53 mm (2.1 in) | 0.7 °C (33 °F) |
| April | 71 mm (2.8 in) | 5.5 °C (42 °F) |
| May | 73 mm (2.9 in) | 11.3 °C (52 °F) |
| June | 71 mm (2.8 in) | 17.6 °C (64 °F) |
| July | 75 mm (3.0 in) | 21.7 °C (71 °F) |
| August | 59 mm (2.3 in) | 21.6 °C (71 °F) |
| September | 66 mm (2.6 in) | 18.3 °C (65 °F) |
| October | 74 mm (2.9 in) | 11.5 °C (53 °F) |
| November | 66 mm (2.6 in) | 5.4 °C (42 °F) |
| December | 63 mm (2.5 in) | 0.5 °C (33 °F) |
Long-term monthly averages from NASA POWER (MERRA-2 satellite reanalysis). They describe the wider area around Toronto and can differ slightly from local weather-station records.
Learn more: How Does Rain Radar Work? · Open the full Rain Map
Frequently Asked Questions
Is it raining in Toronto right now?
The map above shows recent radar observations over Toronto, Ontario where coverage is available. Use the map legend and timestamp to interpret the imagery. A blank map over Toronto can mean no detected precipitation, missing coverage, delayed data, or rain too light for radar to detect.
How often does the Toronto rain radar update?
Updates depend on the radar provider and local network. Check the timestamp on the map for the latest available frame, and press play to compare recent observations. Radar imagery can lag conditions on the ground.
Can I see if a storm is heading toward Toronto?
Press play to compare recent radar frames over Ontario and see the direction of detected rain. This can help you assess approaching showers near Toronto, but storms can grow or change direction; check your local weather service for forecasts and warnings.
Is this Toronto rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.