Last updated: April 22, 2025
In Toronto, Canada, August presents a warm and varied climate that caters to diverse preferences. Daily maximum temperatures can reach a sizzling 33°C (92°F), while the average rests around a comfortable 21°C (71°F). Nighttime offers a cooler respite with lows of 9°C (48°F). With precipitation totaling 78 mm (3.1 in) over approximately 12 days, residents and visitors alike should be prepared for frequent, though often brief, summer showers. The humidity can be notable at 72%, adding to the warmth, making it essential to stay hydrated and cool during this vibrant month in one of Canada's most bustling cities.
In August, Toronto basks in the warmth of summer, with temperatures showcasing a pleasant range. The average temperature hovers around 21°C (71°F), offering a delightful break from the chilly months that precede it. Minimums typically rest at 9°C (48°F), while maximums can soar up to 33°C (92°F), making it one of the hottest months of the year. This trend illustrates the city's gradual transition from its sweltering July heat, where temperatures frequently peak at 34°C (93°F). As the month unfolds, the warmth continues to attract both locals and tourists alike, eager to enjoy Toronto's vibrant outdoor activities before the coolness of autumn sets in.
August in Toronto brings a consistent 78 mm (3.1 in) of precipitation over 12 days, mirroring the rainfall of July. This steady summer rainfall contributes to the lush greenery that characterizes the city during these warm months. As the summer weather recedes into autumn, the precipitation amounts begin to shift; previous months like April and May show significantly higher totals, indicating the transition to a drier season ahead. Interestingly, the average number of rainy days aligns well with July, suggesting that while August may not be the wettest month, it remains significant for maintaining the summer’s vibrancy before cooler days set in.
In Toronto, August marks a notable shift in humidity levels, with a recorded 72%—the lowest of the year. This decline follows a gradual decrease from 91% in January, highlighting a trend where the winter months are characterized by higher humidity, gradually tapering off as summer approaches. By July, humidity reaches its annual low point at 77%, making August's further reduction a significant transition into the drier autumn months. Interestingly, as September rolls in, humidity begins to rise again, creeping up to 76%, suggesting that while August offers a brief reprieve from the mugginess, the Toronto climate remains dynamic and ever-changing.
In August, Toronto experiences a very high UV Index of 9, maintaining the trend from the previous months of summer. This continued elevation in UV levels means that sun exposure can lead to skin damage in just 15 minutes, underscoring the importance of diligent sun protection. The consistent high readings from April through August establish a clear pattern of rising UV intensity as the season progresses, transitioning from moderate levels in the earlier months to the peak in the summer. As daylight hours remain generous, taking precautionary measures against UV radiation becomes crucial. For more detailed information on UV trends throughout the year, check out Toronto UV Index.
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August in Toronto is a delightful continuation of summer, boasting 344 hours of sunshine that perfectly complements the city's vibrancy. Following the peak sunshine months of June and July, August maintains a golden glow that invites both locals and tourists to enjoy outdoor activities and festivals. This sunny stretch not only reflects a high point for the summer but also marks a subtle transition as the days begin to shorten with the approach of fall. With ample sunshine during this month, the city remains alive with color and energy, proving that the warmth of summer lingers just a little longer in Toronto.
August in Toronto enjoys a notable increase in sunshine, with a 49% chance of sunny weather, making it one of the sunniest months of the year. This trend follows a gradual rise in sunny days starting from the early months; for instance, January kicks off with only an 18% chance of sunshine, with percentages steadily climbing through the spring and summer months. By August, the likelihood of clear skies peaks, offering residents and visitors alike the perfect backdrop for outdoor activities. As the season transitions into September, the chances remain high at 46%, but it's clear that August stands out as a golden month for those seeking the warmth of the sun in Toronto.
In August, Toronto enjoys approximately 13 hours of daylight, marking a subtle decline as the city transitions from the height of summer. This decrease follows the peak daylight hours of 15 hours seen in both June and July, illustrating the gentle ebb of summer's brilliance. As the year progresses, daylight begins to wane, with September bringing about a further reduction to 12 hours, setting the stage for the shorter days ahead. Overall, August acts as a bridge, holding onto the lingering light of summer while hinting at the upcoming autumn transition, making it a month of both vibrant warmth and the subtle onset of change.
In Toronto, the August wind brings a gentle respite, averaging a mellow 2.9 m/s (6 mph), the lightest breeze of the year. This decline in wind speed follows a trend from the peak months of winter, where gusts reach up to 4.4 m/s (10 mph) in December, gradually tapering off through the summer. As the warmer months progress, the wind’s calming presence reflects the city's transition from the lively summer energy to the more moderate fall. Interestingly, while August offers a sense of stillness, the subsequent months, particularly in September and October, see a resurgence to 3.7 m/s (8 mph), signaling the arrival of crisp autumn air. This gentle fluctuation in wind speed not only characterizes Toronto's diverse seasonal atmosphere but also invites residents and visitors alike to embrace the soothing shift of late summer.
The weather in Toronto changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Toronto and find detailed weather information for every month.
In August, Toronto experiences a warm climate with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 33°C (92°F), and average temperatures around 21°C (71°F). The month is characterized by relatively high humidity at 72% and moderate precipitation of 78 mm (3.1 in) over approximately 12 days. In contrast, January brings a stark chill, with temperatures plummeting to a minimum of -25°C (-12°F) and averaging -4°C (25°F), reaching a maximum of just 12°C (53°F). This winter month sees slightly lower precipitation at 62 mm (2.5 in) over about 8 days, but the humidity is notably high at 91%. For more detailed information, check out Toronto weather in January.
August and February offer dramatic contrasts in weather. In August, temperatures range from a mild 9°C (48°F) at night to a warm peak of 33°C (92°F) during the day, accompanied by relatively high humidity at 72%. The month also receives about 78 mm (3.1 in) of precipitation over 12 days. In stark contrast, February experiences frigid conditions, with nighttime lows plunging to -23°C (-9°F) and daytime highs averaging only -3°C (26°F). Despite having slightly less precipitation at 65 mm (2.6 in) over the same number of days, February is characterized by much higher humidity at 91%. For more insights into February weather, check out Toronto weather in February.
August and March present stark contrasts in weather conditions. In August, temperatures range from a mild 9°C (48°F) to a scorching 33°C (92°F), with an average of 21°C (71°F) and relatively high humidity at 72%. This month also sees about 78 mm (3.1 in) of precipitation over approximately 12 days. In contrast, March experiences much colder temperatures, with a minimum of -20°C (-4°F) and a maximum of 19°C (66°F), averaging around 0°C (33°F). Despite having less precipitation, at 58 mm (2.3 in) over 9 days, March has a higher humidity level of 88%. For more details on temperatures and conditions, you can check Toronto weather in March.
When comparing the weather in August and April, it's clear that August offers significantly warmer temperatures, with daytime highs averaging around 21°C (71°F) and reaching up to 33°C (92°F), while April's temperatures are much cooler, peaking at 22°C (72°F). April experiences lower humidity levels at 88%, compared to August's 72%. Additionally, precipitation is slightly higher in April, with an average of 98 mm (3.9 in) over 13 days, versus August’s 78 mm (3.1 in) over 12 days. For a closer look at what to expect from April weather, you can check out Toronto weather in April.
When comparing the weather in August and May, significant differences emerge. August tends to be warmer, with average temperatures ranging from a low of 9°C (48°F) to a high of 33°C (92°F), while May sees a much cooler range from a minimum of -3°C (28°F) to a maximum of 30°C (86°F). Precipitation levels are slightly higher in May, totaling 90 mm (3.6 in) over 11 days compared to August's 78 mm (3.1 in) spread across 12 days. Additionally, humidity levels are relatively high in both months, with August averaging 72% and May at 82%. For more details on the weather in May, you can check Toronto weather in May.
When comparing the weather in August and June, August generally offers warmer temperatures, with an average of 21°C (71°F) compared to June's 19°C (66°F). Both months experience similar maximum temperatures, with August peaking at 33°C (92°F) and June reaching up to 31°C (89°F). Precipitation levels are nearly identical, with August receiving 78 mm (3.1 in) over 12 days, while June sees 79 mm (3.1 in) over just 10 days. Interestingly, humidity is slightly lower in August at 72%, compared to June’s 79%, contributing to a more comfortable feel during the hotter month. For a detailed look at June's weather, check out Toronto weather in June.
In comparing the weather between July and August, it is evident that both months experience similar average precipitation levels, with July receiving 78 mm and August also at 78 mm, albeit over slightly different numbers of days (11 in July and 12 in August). July tends to be warmer overall, with a higher minimum temperature of 11°C (52°F) and a maximum temperature reaching 34°C (93°F) compared to August's minimum of 9°C (48°F) and a maximum of 33°C (92°F). Additionally, the humidity levels are slightly higher in July at 77%, while August sees an average of 72%. Overall, if you're looking for the warmer month, July would be the better choice. For more details, you can check out Toronto weather in July.
August tends to be warmer and more humid compared to September, with average temperatures reaching 21°C (71°F) and occasional highs of 33°C (92°F). In contrast, September cools down, showcasing an average temperature of 17°C (64°F) and a lower minimum temperature of 3°C (38°F). While both months can experience high temperatures up to 33°C (91°F), September generally sees less precipitation, averaging 58 mm (2.3 in) over 8 days, compared to August's 78 mm (3.1 in) over 12 days. Additionally, September's humidity remains relatively high at 76%, slightly above August’s average of 72%. For more detailed weather information, check out Toronto weather in September.
August is characterized by warm temperatures, with average highs around 21°C (71°F) and maximums reaching up to 33°C (92°F). In contrast, October sees a significant drop in average temperature to 11°C (52°F), with nighttime lows plummeting to -2°C (29°F). While August experiences some humidity at 72% and less precipitation with 78 mm (3.1 in) over 12 days, October is slightly wetter with 95 mm (3.7 in) of rain spread across 13 days and a higher humidity of 83%. For a detailed look at October weather in Toronto, visit Toronto weather in October.
August and November feature starkly contrasting weather patterns. In August, temperatures range from a minimum of 9°C (48°F) to a maximum of 33°C (92°F), with an average of 21°C (71°F). The month experiences 78 mm (3.1 in) of precipitation over 12 days, accompanied by relatively moderate humidity levels at 72%. Conversely, November sees much colder conditions, where temperatures can drop to -15°C (5°F), with an average of just 3°C (38°F) and a maximum of 22°C (72°F). Precipitation levels are slightly lower at 72 mm (2.8 in), occurring over 10 days, but the humidity is notably higher at 88%. For more detailed information, you can visit Toronto weather in November.
August and December weather exhibit stark contrasts, reflecting the seasonal shift in Toronto. In August, temperatures soar with a minimum of 9°C (48°F) and an average of 21°C (71°F), reaching a maximum of 33°C (92°F). The month experiences a moderate amount of precipitation, averaging 78 mm (3.1 in) over 12 days, accompanied by a humidity level of 72%. In contrast, December brings frigid conditions, with temperatures dropping to a chilling minimum of -24°C (-11°F), an average of -1°C (31°F), and a maximum of only 16°C (61°F). Precipitation in December is slightly lower at 70 mm (2.8 in) across the same number of days, but the humidity rises to 87%, adding to the cold. For more details on December weather in Toronto, you can visit Toronto weather in December.
As August unfolds in Toronto, the city experiences its warmest temperatures of the year, with a notable contrast to the cooler months. While daytime highs can soar up to 33°C, the average temperature remains pleasantly mild, providing a delightful escape from the winter chill. However, the month is not without its rainy spells, with about 12 days of precipitation contributing to a humidity level of 72%, resulting in a sticky yet vibrant atmosphere perfect for summer activities. This combination of warmth and occasional rain sets August apart as a month of both striking heat and lush greenery. For a deeper dive into what you can expect throughout the year, check out Toronto Climate.