Last updated: April 22, 2025
In May, Montreal experiences a dynamic range of weather, with temperatures soaring to a maximum of 36°C (97°F) and dipping as low as -1°C (30°F). The average temperature hovers around 14°C (57°F), creating a pleasant yet occasionally unpredictable climate. With 97 mm (3.8 in) of rainfall spanning 11 days, residents and visitors alike should be prepared for varying weather conditions. Coupled with a humidity level of 80%, May in Montreal offers a taste of late spring's character, where sunny days can quickly transform into rain-soaked afternoons.
May in Montreal marks a striking transition from the lingering chill of winter to the warmth of impending summer. With temperatures starting to rise, May sees an impressive average of 14°C (57°F), standing in sharp contrast to the bitter cold of earlier months. The minimum temperature nudges just above freezing at -1°C (30°F), while the maximum soars to a sweltering 36°C (97°F), demonstrating the potential for a dramatic shift in climate conditions. This month showcases Montreal's ability to embrace both the remnants of snow and the promise of sun, inviting residents and visitors alike to enjoy outdoor activities and the blooming beauty of spring.
May in Montreal brings a moderate increase in precipitation, with 97 mm (3.8 in) of rainfall over 11 days. This marks a noticeable shift from April's higher total of 121 mm (4.7 in) as spring progresses, yet it remains consistent with the region's pattern of around 10-12 rainy days each month. The slight dip in precipitation can be attributed to the warming temperatures and longer daylight hours that often accompany late spring, where you'll find an uptick in outdoor activities despite occasional showers. As the city approaches summer, the balance between rain and sunshine plays a crucial role in the vibrant blossoming of flora, adding lush greenery to Montreal's picturesque landscape.
As spring transitions into summer, May in Montreal showcases a notable dip in humidity, settling at 80%. This marks a gradual shift from the dampness experienced in the winter months, which hover around 92% in February and an even more humid 93% in January. The trend continues, with April reflecting a slight decrease to 85%. By May, the city begins to embrace a more comfortable climate, offering residents a reprieve from the heavier humidity of the previous months. This decline in moisture paves the way for warmer, sunnier days, as the city prepares to welcome June’s even lower humidity levels at 74%.
As spring transitions into summer, May in Montreal sees a significant spike in the UV Index, reaching an impressive 9—an indicator of very high UV exposure. This sharp increase from April's 7 not only highlights the importance of sun safety but also drastically reduces the burn time to just 15 minutes. As residents and visitors soak up the sunshine, it's crucial to take precautions, such as applying sunscreen and seeking shade during peak hours. With consistent very high UV ratings continuing into June, May serves as a powerful reminder of nature's intensity and the need for sun protection. For more information on daily UV readings, check out the Montreal UV Index.
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May greets Montreal with a delightful surge in sunshine, boasting 285 hours of radiant light that signals the full embrace of spring. As winter recedes, the city's daylight hours blossom significantly from the 226 hours in April, setting the stage for a vibrant outdoor season. This upward trend continues into June, which shines even brighter with 321 hours of sun, but May stands out as a pivotal moment of transition. Residents and visitors alike relish the warmth and brightness, taking the opportunity to explore blooming parks and lively street festivals, all under the generous gaze of the sun. The springtime glow not only lifts spirits but also showcases Montreal's charm, inviting all to bask in its beauty before the longer summer days ahead.
In Montreal, May brings a 41% chance of sunny weather, marking a slight upward trend compared to the preceding months. After the chilly and often overcast days of winter and early spring, residents can look forward to more sunshine as the city transitions into warmer weather. Compared to April's 36%, May offers a promising increase, suggesting that outdoor activities may be more favorable. Although June experiences a slight dip with a 36% chance of sun, May stands out as a peak period of moderate optimism for sunshine before the summer months take over. This trend not only hints at an awakening nature but also encourages Montrealers to embrace the outdoors as they shake off the last remnants of winter.
As the year unfolds in Montreal, the pattern of daylight duration reveals a delightful progression toward the vibrant summer months. Starting from just 9 hours of daylight in January, residents witness a gradual increase, with February granting an extra hour, bringing it to 10 hours. March introduces another hour of sunlight, totaling 11 hours, as the days grow longer and warmer. April brings a noticeable jump to 13 hours, and by May, daylight reaches a comforting 14 hours, encouraging outdoor activities and leisure. The peak of daylight arrives in June and July, both basking in 15 hours of sunshine. However, this abundance begins to wan, as August sees a slight dip to 14 hours, and the daylight gently decreases to 12 hours in September, before settling back to 10 hours in October and continuing its retreat through the winter months. This rhythmic ebb and flow of light not only marks the changing seasons but also enriches the Montreal experience, fostering a strong connection to nature and community.
In May, Montreal experiences a gentle breeze with an average wind speed of 3.4 m/s (8 mph), slightly milder than the gusts felt in March and comparable to the speeds of April. As spring fully emerges, the winds remain consistent, providing a refreshing backdrop to outdoor activities and the blooming scenery. The transition from the brisk winds of winter to the softer spring currents marks a notable shift, with June seeing a slight uptick to 3.7 m/s (8 mph), signaling the approach of summer. Overall, May offers the perfect balance, making it an ideal time to enjoy the city’s vibrant parks while feeling that tender spring wind brush against your skin.
The weather in Montreal 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 Montreal and find detailed weather information for every month.
May and January present stark contrasts in weather conditions. In May, temperatures range from a chilly minimum of -1°C (30°F) to a warm maximum of 36°C (97°F), with an average of 14°C (57°F). The month sees about 97 mm (3.8 in) of precipitation over 11 days, and humidity levels hover around 80%. Conversely, January is notably colder, with temperatures dipping as low as -32°C (-25°F) and averaging -8°C (17°F), peaking at 9°C (49°F). While it has slightly less precipitation at 84 mm (3.3 in) over the same number of days, the humidity is higher at 93%. For a more detailed look at winter conditions, you can visit Montreal weather in January.
May and February present stark contrasts in weather patterns. In May, temperatures range from a chilly -1°C (30°F) at night to a warm peak of 36°C (97°F), averaging a mild 14°C (57°F). The month sees about 97 mm (3.8 in) of precipitation over 11 days, with a humidity level of 80%. Conversely, February experiences much harsher conditions, with nighttime temperatures plummeting to -25°C (-13°F) and daytime highs reaching only 13°C (56°F), averaging -7°C (20°F). The precipitation in February is slightly less at 82 mm (3.2 in) but occurs over more days, about 12, along with a higher humidity level of 92%. For more insights on February weather, you can check Montreal weather in February.
In comparing the weather between May and March, we see a significant shift in temperature and conditions. May experiences a much milder range, with minimum temperatures around -1°C (30°F) and a warm average of 14°C (57°F), peaking at a scorching 36°C (97°F). In contrast, March is characterized by much colder temperatures, starting from a chilling minimum of -23°C (-9°F) and only reaching an average of -2°C (29°F) and a maximum of 20°C (69°F).
Precipitation levels are relatively similar, with May receiving 97 mm (3.8 in) over 11 days and March recording 84 mm (3.3 in) over the same number of days, while humidity remains high in both months at 80% for May and 86% for March. For more details on March weather patterns, you can visit Montreal weather in March.
In comparison to April, May experiences a notable increase in temperature, with minimums of -1°C (30°F) and maximums soaring to 36°C (97°F), contrasting sharply with April's ranges of -10°C (14°F) to 25°C (78°F). While April has an average temperature of 6°C (43°F) and sees more precipitation at 121 mm (4.7 in) over 12 days, May has slightly lower precipitation at 97 mm (3.8 in) over 11 days. Additionally, May's humidity at 80% is slightly lower than April's 85%, suggesting a shift towards warmer and drier conditions as spring progresses. For more detailed insights, check out Montreal weather in April.
May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of -1°C (30°F) to an average of 14°C (57°F), peaking at a maximum of 36°C (97°F). The month sees approximately 97 mm (3.8 in) of precipitation over 11 days, coupled with a high humidity level of 80%. In contrast, June brings warmer conditions with a minimum temperature of 3°C (38°F) and an average of 19°C (67°F), while the maximum temperature reaches 34°C (94°F). Precipitation slightly increases to 103 mm (4.1 in) over 12 days, but the humidity decreases to 74%. For a closer look at June weather, visit Montreal weather in June.
In comparing the weather between May and July, May experiences a broader temperature range with minimums dipping to -1°C (30°F) and a maximum reaching up to 36°C (97°F), while July maintains milder temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 35°C (95°F). Precipitation in May totals 97 mm (3.8 in) over 11 days, slightly less than July's 103 mm (4.1 in) spread across 14 days. Furthermore, while May has a higher humidity level at 80%, July's humidity is slightly lower at 76%. For a more detailed look at July weather specifically, visit Montreal weather in July.
May and August present notable differences in weather patterns. In May, temperatures can fluctuate significantly, with a minimum of -1°C (30°F) and a maximum reaching 36°C (97°F), resulting in an average temperature of 14°C (57°F). The month also sees a higher humidity level of 80%, along with 97 mm (3.8 in) of precipitation over 11 days.
In contrast, August enjoys a milder climate with a minimum temperature of 8°C (47°F) and a maximum of 33°C (92°F), leading to a more stable average of 21°C (70°F). Precipitation increases slightly to 109 mm (4.3 in) over 13 days, but humidity drops to 75%. For more details on the weather patterns in August, you can check out Montreal weather in August.
In comparing the weather between May and September, we see a shift in both temperature and precipitation. May experiences a broader temperature range with a minimum of -1°C (30°F) and a maximum of 36°C (97°F), leading to an average temperature of 14°C (57°F). This month also sees a considerable amount of rain, totaling 97 mm (3.8 in) over approximately 11 days, combined with high humidity at 80%.
In contrast, September has slightly warmer average temperatures, ranging from a minimum of 2°C (35°F) to a maximum of 32°C (90°F), averaging 16°C (62°F). Precipitation is lower at 73 mm (2.9 in) and occurs over about 9 days, with humidity levels slightly reduced to 78%. For a detailed overview, visit Montreal weather in September.
May and October present contrasting weather patterns, reflecting the transition from spring to autumn. In May, temperatures can range dramatically from a chilly minimum of -1°C (30°F) to a warm maximum of 36°C (97°F), with an average of 14°C (57°F). This month experiences about 97 mm (3.8 in) of precipitation over 11 days, and humidity levels are relatively high at 80%. In comparison, October sees cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 27°C (80°F), averaging around 10°C (50°F). Precipitation increases to 139 mm (5.5 in) over 13 days, and humidity rises slightly to 86%. For more detailed information, you can check Montreal weather in October.
May and November present contrasting weather experiences, highlighting the transition from spring to late autumn. In May, temperatures can range from a pleasant minimum of -1°C (30°F) to a scorching maximum of 36°C (97°F), with an average temperature of 14°C (57°F). The month sees about 97 mm (3.8 in) of precipitation over approximately 11 days, accompanied by a humidity level of 80%. Conversely, November features much colder conditions, with temperatures ranging from -17°C (1°F) to a milder high of 23°C (73°F), averaging just 2°C (35°F). It also experiences increased precipitation, totaling 118 mm (4.6 in) over 13 days, and a higher humidity of 88%. For more details on November weather, you can check this link: Montreal weather in November.
May and December present strikingly different weather conditions. In May, temperatures can range from a minimum of -1°C (30°F) to a maximum of 36°C (97°F), with an average temperature of 14°C (57°F). The month experiences around 97 mm (3.8 in) of precipitation over 11 days and maintains a relative humidity of 80%. In contrast, December is characterized by much colder temperatures, with a minimum of -26°C (-15°F) and a maximum of only 14°C (57°F), averaging -5°C (24°F). Precipitation is slightly lower at 88 mm (3.5 in), but it occurs over 12 days with higher humidity at 89%. For a more detailed view of December weather, you can refer to Montreal weather in December.
As May ushers in the beauty of spring, Montreal's weather comes alive, contrasting significantly with the harsher conditions of winter. With temperatures ranging from crisp to warm, the city transitions from the chill of early months to a pleasant average that invites outdoor activities. However, May is also marked by a fair share of rain, contributing to a humidity level that often hovers around 80%. This combination of warmth and moisture rejuvenates the city's landscapes, creating a vibrant backdrop for events and exploration. For a deeper dive into what to expect throughout the year, check out Montreal Climate.