Monthly climate averages for Waterloo, Canada. Based on 10-year ERA5 reanalysis data.
Dfb Warm-Summer Continental
Climate OverviewWaterloo, Canada in August has warm conditions, with highs averaging 25°C (77°F). Rain falls on about 11 days this month.
This month falls at the end of Summer.
Daily highs in August gradually drop from around 26°C (79°F) at the start to 24°C (75°F) by month's end.
August sees fairly even rainfall, totalling about 87 mm across the month.
Expect around 11.6h of sunshine at the start of August, decreasing to 10.4h by the end.
The warmest days tend to fall around the 11th, averaging 26.1°C (79°F).
Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 25°C (77°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -1°C / -8°C | -6°C / -13°C | 12days (72 mm) Wet | 4.6h Fair | 79% Humid | 2.2 Moderate | Poor | View Details |
| February | 1°C / -8°C | -4°C / -13°C | 11days (69 mm) Wet | 6.3h Fair | 76% Humid | 3.2 Moderate | Poor | View Details |
| March | 5°C / -4°C | 1°C / -9°C | 11days (79 mm) Wet | 7.5h Good | 71% Muggy | 4 Moderate | Poor | View Details |
| April | 12°C / 2°C | 8°C / -3°C | 14days (94 mm) Wet | 8.7h Good | 67% Muggy | 4.8 Moderate | Poor | View Details |
| May best | 19°C / 8°C | 18°C / 6°C | 11days (75 mm) Wet | 10.5h Excellent | 67% Muggy | 6 High | Good | View Details |
| June best | 24°C / 14°C | 24°C / 13°C | 11days (94 mm) Wet | 12h Excellent | 67% Muggy | 6.6 High | Excellent | View Details |
| July best | 26°C / 17°C | 28°C / 17°C | 12days (78 mm) Wet | 11.9h Excellent | 70% Muggy | 6.8 High | Excellent | View Details |
| August best | 25°C / 16°C | 26°C / 17°C | 11days (86 mm) Wet | 11h Excellent | 74% Muggy | 6 High | Excellent | View Details |
| September best | 22°C / 13°C | 22°C / 12°C | 8days (60 mm) Wet | 9.5h Good | 74% Muggy | 5.1 High | Excellent | View Details |
| October | 15°C / 7°C | 12°C / 5°C | 11days (79 mm) Wet | 6.8h Fair | 76% Humid | 3.4 Moderate | Fair | View Details |
| November | 7°C / 0°C | 3°C / -4°C | 12days (65 mm) Wet | 5.4h Fair | 77% Humid | 2.2 Moderate | Poor | View Details |
| December | 1°C / -5°C | -3°C / -10°C | 13days (77 mm) Wet | 4h Fair | 80% Humid | 1.6 Low | Poor | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
A waterproof jacket or compact umbrella is recommended for occasional showers.
Last updated:
We use cookies to analyze traffic and improve your experience. No personal data is sold or shared with advertisers.
We use Google Analytics to understand how visitors use WorldStats. This helps us improve content and performance. Analytics cookies track page views and session data — no personally identifiable information is collected. You can change your preference at any time from the footer.
