Waterloo Weather & Climate: Best Time to Visit

In Waterloo, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a pleasant 20°C (68°F) in July. In February, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).

At night, temperatures range from around 14°C (57°F) in July to 4°C (39°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Waterloo has a notably wet climate with abundant precipitation, recording 1170 mm (46 in) of rainfall per year. Despite minor fluctuations, Waterloo enjoys fairly consistent precipitation throughout the year. In December, you can expect around 123 mm (4.8 in) of precipitation, while in April, Waterloo receives about 76 mm (3 in). For more details, please visit our Waterloo Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Waterloo can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 7.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.6 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in December, reaching 86%. In May, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year