Last updated: April 22, 2025
In May, Cornwall, Canada experiences a delightful transition into warmer weather, with maximum temperatures soaring to 24°C (76°F), while the average hovers around a comfortable 9°C (49°F). However, the month can see cooler nights, dipping to a minimum of -3°C (27°F). Nature flourishes with an average of 88 mm (3.5 in) of precipitation over 13 rainy days, contributing to the lush landscapes. With humidity levels soaring to 85%, visitors can expect a refreshing spring atmosphere, perfect for exploration and outdoor activities.
In May, Cornwall, Canada, showcases a delightful transition into warmer weather, with temperatures rising noticeably from the lingering chill of spring. The minimum temperature hovers around -3°C (27°F), while the average temperature steps up to a pleasant 9°C (49°F). As the days grow longer and sunnier, the maximum temperature can reach a soaring 24°C (76°F), inviting residents and visitors alike to enjoy outdoor activities. This month stands out as a significant shift from the colder months, as it begins to herald the arrival of summer's warmth, evidenced by a consistent upward trend in temperatures. With the scene set for vibrant blooms and lively gatherings, May is truly a lovely time to experience Cornwall's charm.
In May, Cornwall experiences 88 mm (3.5 in) of precipitation over 13 days, reflecting a pleasant transition into late spring. This amount is slightly higher than April's totals and continues the trend of relatively consistent rainfall that characterizes the region in early summer. Notably, as spring gives way to summer, precipitation levels begin to rise, with June typically recording even more rain at 97 mm (3.8 in). This gradual increase in precipitation suggests a shift towards the wetter months ahead, while still maintaining a balance that allows for the blooming beauty of the season to flourish. Overall, May serves as a bridge between the fresh showers of spring and the more abundant rainfall that will follow.
May in Cornwall, Canada, brings a welcomed balance of humidity, registering at 85%. This level reflects a slight dip from the wetter months of March and April, which hovered around 86%. While May is not the peak of humidity for the year—July and August take that honor—this month's moisture content maintains an overall trend characteristic of Cornwall's relatively humid climate. As spring transitions into summer, the humidity levels show a degree of stability, hovering around mid-80s, providing a comfortable backdrop for outdoor activities before the summer heat intensifies. The consistent humidity levels throughout the year suggest a climate that is rich in moisture, making Cornwall a vibrant tapestry of seasonal changes while keeping the air pleasantly crisp in May.
In May, Cornwall experiences a significant increase in the UV Index, soaring to 8, placing it in the very high exposure category, with a burn time of just 15 minutes. This sharp rise follows April's index of 7, highlighting a trend of intensifying sun exposure as the spring transitions into summer. As the days grow longer and sunnier, it's essential for residents and visitors to stay vigilant about sun protection, especially when the UV rays are at their peak. Comparing this to the earlier months, the gradual increase from January's low index of 2 to May's high underscores the importance of awareness and preparedness for UV-related health risks. For more detailed information on UV levels throughout the year, check out Cornwall UV Index.
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May in Cornwall, Canada, shines brightly as the region experiences a burst of sunshine, totaling 295 hours for the month. This marks a delightful increase from April's 243 hours, as spring transforms into a vibrant early summer. Following the trend set by earlier months, with March and April steadily gaining sunlight, May exemplifies the region's gradual warming and longer days. The peak of sunshine continues into the summer months, with June and July showcasing 329 and 341 hours, respectively. This upward trajectory not only signals a lively season ahead but also invites both residents and visitors to bask in the natural warmth and beauty of Cornwall. As the sun reaches its zenith, May serves as a perfect prelude to the sunnier days that follow, making it an ideal time to enjoy the great outdoors.
May in Cornwall, Canada, presents a promising opportunity for sunny weather, boasting a 41% chance of sunshine. This figure marks a significant increase from the earlier spring months, in particular showing a notable rise from April's 28%. As the region transitions into late spring, the likelihood of sunny days begins to align closely with the summer months, particularly June and August, which hover around 42% and 44% respectively. This trend highlights a refreshing shift after the gloomy winter months and sets the stage for outdoor activities and enjoyment of the blossoming landscapes, making May a delightful time to experience Cornwall's natural beauty.
As spring unfolds in Cornwall, Canada, the days become noticeably longer, offering a delightful transition from winter's dimness. In May, daylight reaches 14 hours, marking a significant leap from 13 hours in April. This upward trend continues into June, where residents can bask in 15 hours of sunlight. The increasing daylight is not just a simple shift; it's a herald of summer approaching, providing ample opportunities for outdoor activities and vibrant community gatherings. However, as the year progresses into late summer and early fall, daylight gradually diminishes, with September dropping to 12 hours and continuing to decline to 8 hours by December. This cyclical ebb and flow of daylight beautifully reflects the changing seasons, inviting Cornwall's residents to savor the longer days of late spring and summer while preparing for the tranquil embrace of autumn.
In May, Cornwall experiences an average wind speed of 5.2 m/s (12 mph), marking a slight dip from the 6.2 m/s (14 mph) peak seen in both March and December. This minor decrease is part of a gentle trend, as spring transitions into summer. The winds remain relatively consistent throughout the earlier months, with February and November showing slightly stronger gusts at 5.7 m/s (13 mph) and 5.8 m/s (13 mph), respectively. As we move into the warmer months, July and August present the calmest conditions with average speeds of 4.7 m/s (11 mph) and 4.6 m/s (10 mph), providing a contrast to the brisker months of winter and early spring. This gradual wind shift exemplifies the seasonal changes, offering a unique experience for residents and visitors alike in Cornwall.
The weather in Cornwall 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 Cornwall and find detailed weather information for every month.
In comparing the weather of May and January, we see a stark contrast in temperatures and conditions. May boasts a much milder range, with minimum temperatures around -3°C (27°F) and an average of 9°C (49°F), peaking at a pleasant 24°C (76°F). This month also experiences higher precipitation, totaling 88 mm (3.5 in) over 13 days, with humidity levels at 85%.
In contrast, January is characterized by much colder temperatures, with minimums reaching -20°C (-3°F) and an average of -5°C (23°F), while the maximum only grazes 14°C (58°F). The precipitation is slightly lower at 81 mm (3.2 in), occurring over 10 days, and humidity remains similar at 84%.
The difference between these months highlights the transition from the cold depths of winter to the mild beginnings of spring. For a more detailed look at January weather, check out Cornwall weather in January.
May and February present quite a contrast in weather conditions. May experiences milder temperatures, with an average of 9°C (49°F), while February is significantly colder, averaging -5°C (22°F). February's minimum temperature can drop to -20°C (-4°F), whereas May sees a much warmer low of -3°C (27°F). Precipitation levels are relatively similar, with May recording 88 mm (3.5 in) over 13 days and February slightly higher at 93 mm (3.7 in) over 12 days. Both months have comparable humidity levels, with May at 85% and February at 84%. If you're interested in exploring February's climate further, you can check out Cornwall weather in February.
In comparing the weather between March and May, significant differences emerge. March experiences much colder temperatures, with a minimum of -19°C (−2°F) and an average of -2°C (28°F), while May brings a more temperate range of 9°C (49°F) on average, with highs that can reach up to 24°C (76°F). Precipitation levels are fairly similar, with March receiving 75 mm (2.9 in) compared to May's 88 mm (3.5 in), though both months see rainfall on 13 days. Humidity remains almost constant, with March at 86% and May at 85%. For more details about the weather in March, you can check Cornwall weather in March.
In comparing the weather between April and May, we see a noticeable shift in temperatures and conditions. May witnesses a broader temperature range, with minimums as low as -3°C (27°F) and average highs reaching up to 24°C (76°F), while April's minimum dips even lower to -8°C (18°F) and averages only 4°C (39°F) with a peak of 18°C (65°F). Precipitation levels are quite similar, with May receiving 88 mm (3.5 in) over 13 days, slightly more than April's 85 mm (3.4 in) across 12 days, while humidity is also fairly comparable at 85% in May and 86% in April. For more specifics about April weather, you can check Cornwall weather in April. Overall, May generally offers milder and more variable weather compared to the cooler and more stable conditions of April.
May and June exhibit notable differences in weather patterns. May experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 9°C (49°F), while June sees a warmer minimum of 0°C (33°F) and an average of 15°C (60°F). Additionally, June boasts a higher maximum temperature of 29°C (84°F) compared to May's max of 24°C (76°F). While precipitation is slightly greater in June at 97 mm (3.8 in) over 12 days, it is accompanied by a marginally lower humidity of 82% compared to May's 85%. For more details on June weather, you can visit Cornwall weather in June.
In May, temperatures can be quite chilly, with a minimum of -3°C (27°F) and an average of 9°C (49°F), climbing to a maximum of 24°C (76°F). This month experiences significant precipitation at 88 mm (3.5 in) over approximately 13 days, accompanied by high humidity levels averaging around 85%. In contrast, July brings a much warmer climate, with minimum temperatures of 11°C (52°F) and an average of 20°C (67°F), peaking at 30°C (85°F). Precipitation is lower in July, totaling 68 mm (2.7 in) across about 10 days, and humidity remains slightly elevated at 86%. For more detailed information on July weather, you can visit Cornwall weather in July.
May and August present contrasting weather patterns, reflecting the shift from spring to summer. In May, temperatures can drop as low as -3°C (27°F), with an average of 9°C (49°F) and a maximum reaching 24°C (76°F). This month also experiences considerable precipitation, totaling 88 mm (3.5 in) over 13 days, along with a high humidity level of 85%. In contrast, August offers a milder climate with minimum temperatures of 11°C (51°F), an average of 20°C (68°F), and highs peaking at 30°C (86°F). Precipitation decreases to 73 mm (2.9 in) spread across just 10 days, with humidity slightly rising to 87%. For more details on August weather, you can check Cornwall weather in August.
May and September present contrasting yet pleasant weather conditions. In May, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 24°C (76°F), with an average of 9°C (49°F). The month sees around 88 mm (3.5 in) of precipitation over 13 days, accompanied by high humidity at 85%. In contrast, September features a milder climate, with temperatures fluctuating between a minimum of 3°C (38°F) and a maximum of 27°C (82°F), averaging at 16°C (61°F). Although September receives slightly more rainfall at 96 mm (3.8 in) over 10 days, it maintains the same humidity level of 85%. For a detailed look into September's weather patterns, you can check out Cornwall weather in September.
When comparing the weather in May and October, both months experience a similar range of temperatures, with May having slightly warmer minimum and maximum temperatures. May sees minimum temperatures around -3°C (27°F) and an average of 9°C (49°F), while October's minimum is just a degree higher at -2°C (29°F) with an average of 10°C (50°F). Both months exhibit the same maximum temperature of 24°C (75°F), indicating comfortable daytime conditions. Precipitation in May is slightly higher at 88 mm (3.5 in) over 13 days compared to October's 77 mm (3.0 in) over 11 days, suggesting a marginally wetter May. Interestingly, both months also share a consistent humidity level of 85%, creating a similar feel in the air. For more detailed insights, you can check Cornwall weather in October.
May and November present contrasting weather patterns, showcasing the transition from spring to late autumn. In May, temperatures range from a brisk minimum of -3°C (27°F) to a pleasant maximum of 24°C (76°F), with an average of 9°C (49°F). The month sees around 88 mm (3.5 in) of precipitation over approximately 13 days and maintains a high humidity level of 85%. In contrast, November is notably colder, with temperatures dipping to a minimum of -12°C (10°F) and peaking at 20°C (68°F), setting an average at 4°C (39°F). Rainfall increases to 135 mm (5.3 in) across roughly 15 days, while humidity remains at 85%, similar to May. For a closer look at weather specifics, you can visit Cornwall weather in November.
May and December present contrasting weather experiences. In May, temperatures range from a chilly minimum of -3°C (27°F) to a pleasant average of 9°C (49°F), reaching a maximum of 24°C (76°F). With 88 mm (3.5 in) of precipitation over 13 days and a humidity level of 85%, May typically feels fresh and vibrant as spring blooms. In contrast, December sees much colder conditions, with minimum temperatures plunging to -19°C (-3°F) and an average temperature of -2°C (29°F), peaking at just 14°C (58°F). The precipitation is slightly higher at 97 mm (3.8 in) across the same number of days, but humidity remains relatively constant at 84%. For more details on December weather, check out Cornwall weather in December.
May in Cornwall marks a delightful transition towards warmer weather, with temperatures rising from chilly lows to a pleasant warmth. Unlike the harsher winter months, May’s climate is characterized by a refreshing average temperature, inviting more outdoor activities. However, it’s important to note the possibility of substantial rainfall, as precipitation occurs on several days throughout the month. The high humidity can add to the overall feeling of warmth, making it a unique blend of freshness and moisture. For a deeper understanding of Cornwall's overall climate patterns, check out Cornwall Climate.