Last updated: April 22, 2025
May in Toronto, Canada ushers in the warmth of spring, with temperatures reaching a maximum of 30°C (86°F) and an average of 13°C (55°F), while dipping to a minimum of -3°C (28°F) on cooler nights. However, the month is not without its share of rain, as 90 mm (3.6 in) of precipitation falls over approximately 11 days, contributing to the lushness of the season. Humidity levels hover around 82%, creating a pleasantly refreshing atmosphere that accentuates the vibrant life of the city during this transitional time. Enjoy the diverse weather patterns that May offers, from sunny days perfect for outdoor activities to cozy, rainier moments that invite relaxation.
In May, Toronto begins to shake off the remnants of winter, showcasing a delightful shift in temperatures that invites residents and visitors alike to enjoy the great outdoors. With minimums hovering around -3°C (28°F), the month starts with a crispness that quickly gives way to milder conditions, as average temperatures rise to a pleasant 13°C (55°F). The transition culminates in balmy highs reaching an impressive 30°C (86°F), marking a significant leap from the cooler spring months. This upward trend not only enhances the city’s vibrant atmosphere but also heralds the arrival of summer festivities, making May an ideal time to explore Toronto’s parks and bustling street life.
May in Toronto sees a substantial precipitation total of 90 mm (3.6 in), establishing itself as one of the wetter months of the year. With 11 days of rain, May's precipitation levels are slightly lower than the preceding month of April, which recorded a notable 98 mm (3.9 in). This trend hints at a gradual transition from the heavy spring rains into the onset of summer. Comparatively, the rain pattern remains consistent with the months leading up to it, as both April and May together bring a refreshing embrace to the city, nurturing the vibrant green that begins to flourish as warmer weather approaches. As we move into June, rain levels dip slightly to 79 mm (3.1 in), suggesting a gentle ebbing of the spring deluge.
As the warmth of spring transitions into summer, May in Toronto brings a notable drop in humidity to 82%, providing a refreshing change from the heavier, moisture-laden air of the winter months. This decrease marks the beginning of a gradual trend toward lower humidity levels that continues into the summer, where July and August boast 77% and 72% respectively. Comparatively, May's humidity is significantly lower than the peaks seen in the depths of winter, where January and February linger at 91%. This shift not only creates a more comfortable atmosphere for outdoor activities but also heralds the vibrant energy of a Canadian summer, making May a delightful time to embrace the city's blossoming scenery.
As May unfolds in Toronto, the UV Index reaches a notable 9, indicating a very high exposure level. This means that sun-seekers need to be especially cautious, with a burn time of just 15 minutes before skin damage may occur. Following the trend set in April, where the UV Index also peaked, May marks the beginning of a season characterized by intense solar radiation that continues through June, July, and August, all maintaining the same high index. With the warmer days ahead, it's crucial to prioritize sun safety and protective measures. For more insights on sun exposure throughout the year, visit Toronto UV Index.
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As May arrives in Toronto, the city basks in the glow of 294 hours of sunshine, marking a delightful transition into warmer months. This surge in sunlight follows a steady climb from the earlier months, where January started with a modest 112 hours and February offered a bit more at 156 hours. By April, residents could already sense the brightness increasing, with 239 hours hinting at the beauty of spring fully in bloom. The trend continues through May, as the sunshine not only uplifts the spirits but also heralds the approach of summer, setting the stage for the sun-filled days of June and July, which promise even more radiant hours. The steady progression of daylight hours showcases the vibrant seasonal rhythm of Toronto, making May a truly joyful time for locals and visitors alike.
In May, Toronto experiences a notable increase in sunny weather, with a sun probability of 46%. This marks a significant uplift compared to the earlier months of the year, particularly January's bleak 18% and February's 30%. The transition into spring brings a sense of optimism as the city's chances for sunshine begin to rise, peaking in the summer months that follow. Interestingly, although May's likelihood of sunny skies dips slightly compared to June and August, it still stands strong alongside September, showcasing the city's variable yet charming climate. As residents and visitors await the warmth of summer, May’s weather beckons with the promise of clearer days, allowing for more outdoor activities and spontaneous adventures.
As spring blossoms into summer, May in Toronto is a delightful transitional month marked by 14 hours of daylight. This surge in sunlight signals the approach of warmer days, following a gradual increase from 9 hours in January to a more vibrant 13 hours in April. The trend continues into June, where daylight extends to a peak of 15 hours, inviting outdoor activities and social events. This progression illustrates a beautiful awakening in nature, setting the stage for a lively Canadian summer. However, as we move towards autumn, the daylight begins to recede, highlighting the fleeting essence of this bright season.
In May, Toronto experiences a gentle breeze with an average wind speed of 3.3 m/s (7 mph), marking a slight dip from the more blustery spring months of March and April. This reduction in wind is consistent with the transition to warmer weather, as residents start to enjoy outdoor activities in milder conditions. Compared to other months, May stands out with its calmer winds—just before the summer heat sets in, making it an ideal time for picnics and strolls along the waterfront. As the city prepares for the summer months, the subtle shifts in wind patterns highlight the beauty of Toronto's spring, where nature begins to bloom and life flourishes, even beneath a softer breeze.
The weather in Toronto changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May'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.
May and January showcase stark contrasts in weather. May experiences a broader temperature range, with minimums around -3°C (28°F) and maximums reaching up to 30°C (86°F), contributing to an average of 13°C (55°F). This month also sees higher precipitation, totaling 90 mm (3.6 inches) over approximately 11 days, with humidity at 82%. In contrast, January is much colder, with temperatures dipping as low as -25°C (-12°F) and averaging -4°C (25°F), peaking at just 12°C (53°F). Precipitation is lower in January at 62 mm (2.5 inches) over about 8 days, and humidity is slightly higher at 91%. For a more detailed perspective on the weather in January, visit Toronto weather in January.
May and February present stark contrasts in weather patterns. In February, temperatures can plummet as low as -23°C (-9°F), with an average of -3°C (26°F) and a maximum of 16°C (62°F). The month experiences a significant amount of humidity at 91%, coupled with precipitation of 65 mm (2.6 in) over 12 days. In contrast, May showcases a much milder climate, featuring temperatures ranging from a chilly -3°C (28°F) to a warm 30°C (86°F), with an average of 13°C (55°F). While May has a higher precipitation total of 90 mm (3.6 in), it spans over 11 days and offers a comparatively lower humidity of 82%. For a more detailed look at February weather in Toronto, visit Toronto weather in February.
In comparing the weather between March and May, there is a notable contrast in temperature and precipitation. March experiences much colder conditions, with temperatures ranging from a minimum of -20°C (-4°F) to a maximum of 19°C (66°F), while May enjoys milder temperatures ranging from -3°C (28°F) to a warm maximum of 30°C (86°F). Additionally, May receives more precipitation, totaling 90 mm (3.6 in) over approximately 11 days, compared to March’s 58 mm (2.3 in) over 9 days. Humidity levels are slightly higher in March at 88% compared to 82% in May. For more details on March weather, you can visit Toronto weather in March.
In comparing the weather between April and May, May showcases a notable increase in temperature with average highs reaching 30°C (86°F), compared to April's maximum of 22°C (72°F). While both months experience relatively high humidity, May's average stands at 82%, slightly lower than April's 88%. Precipitation is fairly consistent, with May receiving 90 mm (3.6 in) over 11 days, while April totals 98 mm (3.9 in) across 13 days. For a detailed look at April's weather, visit Toronto weather in April.
May and June show a notable transition in weather patterns. May experiences a broader temperature range, with minimums dipping to -3°C (28°F) and maximums reaching up to 30°C (86°F). This month also sees a higher average humidity of 82% and slightly more precipitation at 90 mm (3.6 in) over 11 days. In contrast, June brings milder temperatures, with a minimum of 3°C (38°F) and a maximum of 31°C (89°F). The average temperature rises to 19°C (66°F), and while precipitation decreases to 79 mm (3.1 in) over 10 days, humidity slightly drops to 79%. For more detailed insights, check out Toronto weather in June.
May and July showcase distinct contrasts in weather conditions. In May, temperatures range from a chilly minimum of -3°C (28°F) to a warm maximum of 30°C (86°F), with an average of 13°C (55°F). The month sees a significant amount of precipitation, totaling 90 mm (3.6 in) over 11 days, accompanied by high humidity levels at 82%. In contrast, July experiences milder weather with minimum temperatures of 11°C (52°F) and maximums reaching 34°C (93°F), averaging 22°C (72°F). Precipitation slightly decreases to 78 mm (3.1 in) over the same number of days, while humidity also lowers to 77%. For a detailed overview, check out Toronto weather in July.
May and August showcase distinct weather patterns. In May, temperatures range from a chilly minimum of -3°C (28°F) to a warmer maximum of 30°C (86°F), with an average of 13°C (55°F). The month experiences 90 mm (3.6 in) of precipitation over 11 days and a high humidity level of 82%. In contrast, August sees more consistent warmth, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 33°C (92°F) and an average of 21°C (71°F). While August has slightly less precipitation at 78 mm (3.1 in) over 12 days, it enjoys lower humidity at 72%. For more information, check out Toronto weather in August.
May and September present distinct weather patterns. In May, temperatures can range from a chilly -3°C (28°F) at night to a warm 30°C (86°F) during the day, with an average of 13°C (55°F). The month tends to be quite humid at 82%, and it experiences around 90 mm (3.6 in) of precipitation over 11 days. In contrast, September offers milder conditions with nighttime temperatures rarely dropping below 3°C (38°F) and daytime highs reaching up to 33°C (91°F), leading to an average of 17°C (64°F). With only 58 mm (2.3 in) of rain expected over 8 days and a lower humidity level of 76%, September feels more comfortable for outdoor activities. For detailed insights on September weather, you can visit Toronto weather in September.
When comparing the weather in May and October, we see some interesting similarities and differences. Both months feature a maximum temperature of 30°C (86°F), but the average temperature is slightly warmer in May at 13°C (55°F) compared to October's 11°C (52°F). Precipitation levels are quite close, with May receiving 90 mm (3.6 in) over 11 days, while October has a bit more rainfall at 95 mm (3.7 in) over 13 days. Humidity levels are also comparable, with May at 82% and October slightly higher at 83%. Overall, while both months can experience similar peak temperatures, May generally feels warmer and slightly less wet than October. For more details, visit Toronto weather in October.
In May, temperatures in Toronto range from a chilly minimum of -3°C (28°F) to a pleasant average of 13°C (55°F), with highs reaching up to 30°C (86°F). This month typically experiences around 90 mm (3.6 in) of precipitation over 11 days, with humidity levels averaging at 82%. In contrast, November sees much cooler conditions, with temperatures dipping to a low of -15°C (5°F) and an average of just 3°C (38°F), peaking at 22°C (72°F). This month has slightly less precipitation at 72 mm (2.8 in) over 10 days and a higher humidity at 88%. For more detailed insights, check out Toronto weather in November.
Comparing the weather in May and December reveals significant contrasts. May boasts a minimum temperature of -3°C (28°F) and can reach highs of up to 30°C (86°F), with an average temperature of 13°C (55°F). It typically experiences 90 mm (3.6 in) of precipitation over 11 days, coupled with a humidity level of 82%. In stark contrast, December's temperatures drop drastically, with a minimum of -24°C (-11°F) and an average of -1°C (31°F), while the maximum is only 16°C (61°F). December receives slightly less precipitation at 70 mm (2.8 in) across 12 days, with humidity rising to 87%. For more details, check out Toronto weather in December.
As May unfolds in Toronto, the city experiences a refreshing transition from the chill of spring to the warmth of summer, marked by temperatures reaching up to 30°C (86°F). This month brings a notable increase in both humidity and precipitation, with occasional rainfall sweeping through approximately 11 days, contributing to a lush landscape. Unlike the harsher winter months, May offers a delightful average temperature of 13°C (55°F), enticing residents and visitors alike to enjoy outdoor activities. For a deeper understanding of how Toronto's climate evolves throughout the year, visit Toronto Climate.