Climate and monthly weather forecastWaterloo, Canada
Climate and monthly weather forecast
The climate of Waterloo
Waterloo, sitting within the province of Ontario, portrays a Humid continental climate, commonly classified as Dfb under the Köppen climate classification. Throughout the year, weather patterns demonstrate substantial seasonal variations, with temperatures ranging from a low of -9.2°C (15.4°F) in February to a high of 24.8°C (76.6°F) in July.Analyzing the monthly humidity data reveals consistent values from 75% to 89%, highlighting a generally humid environment. Rainfall shows a somewhat even distribution over the year, with more than 37mm (1.46") each month, having the highest volume in October at 71mm (2.8"). Snowfall, on the other hand, predominantly focuses within the colder months from November through March, hitting its peak in February at 164mm (6.46").
Weather patterns also indicate an increasing daylight duration from 9 hours in January to a high of 15.4 hours in June. In contrast, sunshine hours grow from 2.5 hours in January to a maximum of 9.9 hours in July. Notably, the relative cloud coverage dips during the summer months, moving from a high of 75% in January to 34% in July and August.
The best time to visit Waterloo
Visitors keen on exploring Waterloo under the sun should consider visiting between May and August when sunshine hours range from 8.7 to 9.9. This period also sees the warmest temperature, with average highs ranging from 18°C (64.4°F) to 24°C (75.2°F), offering a comfortable outdoor condition.Furthermore, the month of August provides the least rainy days in comparison to the rest of the year, averaging only 14.3 days of rainfall. Coupled with the least snowfall, it provides a conducive environment for various outdoor activities.
The worst time to visit Waterloo
The period from December to March might be the least appealing to visitors given the harsh weather conditions. In this span, average low temperatures can go down to -9.3°C (15.3°F) in January and -9.2°C (15.4°F) in February and coupled with substantial snowfall between 108mm (4.25") and 164mm (6.46").Moreover, these colder months experience fewer daylight hours, where it reaches the lowest at 9 hours in December and January. Even the number of days with sunshine sinks to a yearly minimum of 6.7 days in February, further deeming this period less suitable for a visit.
Spring weather in Waterloo
The arrival of spring constitutes a vital change in Waterloo's weather, with a significant increase in temperature from a low of -4.1°C (24.6°F) in March to a high of 18°C (64.4°F) in May. Rainfall during this time ranges from 53mm (2.09") to 69mm (2.72") per month, while snowfall reduces dramatically from 108mm (4.25") in March to 3mm (0.12") in May.Summer weather in Waterloo
Summer in Waterloo comes with the warmest temperatures, reaching between 21.8°C (71.2°F) to 24.8°C (76.6°F) from June to August. This period also holds the maximum daylight and sunshine hours, making it the most sunlit period of the year. Rainfall scales down from 52mm (2.05") in June to 37mm (1.46") in September, providing dry conditions for tourists.Autumn weather in Waterloo
Autumn in Waterloo exhibits a gradual temperature decline from an average high of 20.8°C (69.4°F) in September to 5.8°C (42.4°F) in November. Rainfall exhibits an upward trend, reaching its yearly peak in October with 71mm (2.8"). The daylight duration shrinks from 12.5 hours to 9.7 hours, while sunshine hours decrease from 8.3 hours in September to 4.1 hours in November.Winter weather in Waterloo
Winter in Waterloo is characterized by its cold weather, with average high temperatures staying below freezing point from -3.7°C (25.3°F) in December to -0.2°C (31.6°F) in February. The temperature can drop as low as -9.3°C (15.3°F) in January, making it the coldest month of the year. Snowfall reaches its zenith from December to February with an average snowfall between 122mm (4.8") and 164mm (6.46"). The number of sunshine days is also at its lowest during this period.Weather in January
Snow is a definitive characteristic of Waterloo's weather in January. With an average snowfall measurement of 137mm (5.39") that occurs over 18.3 days, it is the month with the third-highest snowfall. The typically brisk winds, averaging at a speed of 18.1km/h (11.2mph), accentuate the frigid feel. Weather in January »Weather in February
Although February in Waterloo maintains the wintery theme of January, it experiences more snowfall by a total of 164mm (6.46"). This snowfall occurs over fewer days compared to January. The decrease in humidity, combined with the increased snowfall, often results in a "powdery" type of snow popular with winter sport enthusiasts. Weather in February »Weather in March
The advent of March brings about a notable shift in Waterloo’s weather compared to February. The city experiences fewer snowfall of 108mm (4.25"), occurring over 10.8 days. An increase in daylight hours marks the beginning of a transition from winter to spring. Weather in March »Weather in April
April in Waterloo presents clearer signs of spring. A significant drop in snowfall occurs with only 37mm (1.46") accumulated over 4.6 days. This noticeable reduction in snowfall indicates the end of the city's snowy period. Consequently, rainfall takes precedence as the main form of precipitation for the rest of the year. Weather in April »Weather in May
As spring deepens in May, Waterloo city witnesses further warming. Rainfall becomes more prevalent, suggesting a shift to a warmer, more humid climate. May serves as a transitional phase between the moderate climate of spring to the warmer summer months. Weather in May »Weather in June
June marks the start of summer in Waterloo. Humidity increases, demonstrated by an 80% average relative humidity level. This humidity, combined with increased temperatures, makes the air feel warmer. Traditionally, this month kicks off the peak tourism season in the city. Weather in June »Weather in July
July, considered the hottest month in Waterloo, experiences the highest average maximum temperature of 24.8°C (76.6°F). The escalation of temperatures combines with a relatively high humidity level to make this month distinctly warm. Weather in July »Weather in August
August in Waterloo sustains July's warmth, with temperatures marginally dipping from the July peak. By this time, the summer's heat has thoroughly seeped into the city, maintaining a warm atmosphere. Visitors and locals continue to enjoy a vibrant outdoor experience. Weather in August »Weather in September
September ushers in autumn in Waterloo, bringing with it a reduction in temperature to an average high of 20.8°C (69.4°F). This climatic change is matched by alterations in the city's flora, with greenery slowly giving way to shades of yellow, orange, and red. Weather in September »Weather in October
October in Waterloo can be described as a truly autumn month. The transition from the warmth of September to the chillier winter months becomes more apparent as the temperatures continue to drop. A steady reduction in sunlight hours signals shorter days ahead. Weather in October »Weather in November
November in Waterloo typically experiences among the first snowfalls of the season, with an 84mm (3.31") accumulation on average. The overall weather is characterized by a blend of lingering autumn remnants mixed with the emerging winter chill. Weather in November »Weather in December
December signals the onset of winter in Waterloo, with a measured snowfall of 122mm (4.8") on average. The drop in temperatures, combined with increased snowfall, announces the full arrival of the winter season. The city is adorned in a stunning winter spectacle of snow, making December a visually appealing month despite the cold. Weather in December »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest time of the year is January, with temperatures averaging a high of -3.7°C (25.3°F) and a low of -9.3°C (15.3°F).
The months with the highest humidity in Waterloo, Canada, are January and February, with an average relative humidity of 89%.
In Waterloo, Canada, during the entire year, the rain falls for 157.6 days and collects up to 681mm (26.81") of precipitation.
Months with snowfall in Waterloo are January through May, October through December.
In Waterloo, Canada, during the entire year, snow falls for 80.1 days and aggregates up to 666mm (26.22") of snow.
With an average of 2.5h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1.
February is the month with the most snowfall in Waterloo. Snow falls for 17.6 days and accumulates 164mm (6.46") of snow.
On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts in Waterloo, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The least humid month is April, with an average relative humidity of 75%.
The months with the highest UV index in Waterloo, Canada, are May through August, with an average maximum UV index of 5.
In Waterloo, Canada, snow does not fall in June through September.
The month with the longest days is June, with an average of 15h and 24min of daylight.
July proves to be the warmest month in Waterloo, recording an average peak temperature of 24.8°C (76.6°F) and a minimum temperature of 15°C (59°F).
With an average of 9.9h of sunshine, July has the most sunshine of the year.
September is the month with the least rainfall in Waterloo. Rain falls for 13.2 days and accumulates 37mm (1.46") of precipitation.
The month with the most rainfall is October, when the rain falls for 17 days and typically aggregates up to 71mm (2.8") of precipitation.
December has the shortest days of the year in Waterloo, with an average of 9h and 0min of daylight.
Average temperature
Waterloo, Canada
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.7°C).
The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-9.3°C).
Average pressure
Waterloo, Canada
- Average pressure in January:
1017.3mbar - Average pressure in February:
1017.3mbar - Average pressure in March:
1018.5mbar - Average pressure in April:
1014.8mbar - Average pressure in May:
1015.4mbar - Average pressure in June:
1013.3mbar
- Average pressure in July:
1014.1mbar - Average pressure in August:
1014.6mbar - Average pressure in September:
1017mbar - Average pressure in October:
1015.5mbar - Average pressure in November:
1018.3mbar - Average pressure in December:
1017.5mbar
The month with the highest atmospheric pressure is March (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed
Waterloo, Canada
- Average wind speed in January:
18.1km/h - Average wind speed in February:
18km/h - Average wind speed in March:
17.1km/h - Average wind speed in April:
17.4km/h - Average wind speed in May:
13.9km/h - Average wind speed in June:
12.3km/h
- Average wind speed in July:
11km/h - Average wind speed in August:
11.3km/h - Average wind speed in September:
11.9km/h - Average wind speed in October:
15km/h - Average wind speed in November:
16.3km/h - Average wind speed in December:
17.2km/h
The windiest month (with the highest average wind speed) is January (18.1km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity
Waterloo, Canada
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Waterloo, Canada
The wettest month (with the highest rainfall) is October (71mm).
The driest month (with the least rainfall) is September (37mm).
Average rainfall days
Waterloo, Canada
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
17.2 days - Average rainfall days in September:
13.2 days - Average rainfall days in October:
17 days - Average rainfall days in November:
11 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is February (6.4 days).
Average snowfall
Waterloo, Canada
The month with the highest snowfall is February (164mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Waterloo, Canada
- Average snowfall days in January:
18.3 days - Average snowfall days in February:
17.6 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
4.6 days - Average snowfall days in May:
0.6 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.5 days - Average snowfall days in November:
9.4 days - Average snowfall days in December:
17.3 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Waterloo, Canada
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
2h and 30min - Average sunshine in February:
3h and 0min - Average sunshine in March:
5h and 12min - Average sunshine in April:
6h and 54min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 18min - Average sunshine in October:
4h and 30min - Average sunshine in November:
4h and 6min - Average sunshine in December:
2h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days
Waterloo, Canada
- Average sunshine days in January:
7.3 days - Average sunshine days in February:
6.7 days - Average sunshine days in March:
11.2 days - Average sunshine days in April:
10.7 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.8 days
- Average sunshine days in July:
9.7 days - Average sunshine days in August:
9.9 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
11.6 days - Average sunshine days in November:
10.9 days - Average sunshine days in December:
7.5 days
The month with the most sunshine days is September (13.9 days).
The month with the least sunshine days is February (6.7 days).
Average UV index
Waterloo, Canada
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover
Waterloo, Canada
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility
Waterloo, Canada
The months with the highest visibility are April, May, June, July and October (9km).
The month with the lowest visibility is January (7km).
