Weather atlas / The seasons
Climate in Ottawa
Ottawa experiences four distinct seasons with cold, snowy winters and warm, humid summers. Temperatures typically range from below -20 degrees Celsius in January to around 25 degrees Celsius in July. Be prepared for significant temperature fluctuations and frequent snowfall during the winter months.
Temperature in °C · Rainfall in mm · Monthly climate averages
Temperature
Precipitation
Monthly Averages
Monthly detail · Scroll the table to see all measurements →
| Month | High °C | Avg °C | Low °C | Rain | Days | Sun (h) | Comfort |
|---|---|---|---|---|---|---|---|
| May | 18° | 14° | 11° | 0mm | 0 |
All-time Records
Record High18.2°CMay
Record Low10.4°CMay
Driest Month0mmMay
Sunniest MonthhMay