Last updated: February 26, 2025
In May, Chamonix-Mont-Blanc experiences a dynamic climate, with maximum temperatures reaching up to 23°C (74°F) and an average hovering around 7°C (45°F). This stunning alpine destination also faces a chilly minimum of -12°C (11°F), reflecting the lingering effects of winter. Throughout the month, visitors can expect substantial precipitation, accumulating to 224 mm (8.8 in) across approximately 21 days, contributing to the lush greenery of the surrounding mountains. With an average humidity of 78%, the atmosphere remains fresh and invigorating, making May an intriguing time to explore the breathtaking landscapes and enjoy a variety of outdoor activities.
In Chamonix-Mont-Blanc during May, temperatures begin to show a promising shift towards warmth, hinting at the approaching summer. With a minimum of -12°C (11°F) and an average temperature of 7°C (45°F), the month invites visitors to shed their winter layers. The maximum climbs to a pleasant 23°C (74°F), allowing for delightful outdoor activities amidst stunning alpine scenery. This notable warming trend is evident after the colder months, reflected in April's milder temperatures, which set the stage for May’s inviting climate. As the landscape transforms, blooming wildflowers and melting snow present a fresh, vibrant character to this iconic French destination.
In May, Chamonix-Mont-Blanc experiences a significant uptick in precipitation, with 224 mm (8.8 in) of rain falling over 21 days, marking it as one of the wettest months of the year. This sharp increase follows the lighter showers of April, which brought only 84 mm (3.3 in), and highlights the shift toward the wetter conditions typical of late spring. The frequency of rainy days in May also sets it apart, surpassing other months and contributing to the lush greenery that adorns the Alpine landscape. As the snow melts from the peaks, the abundant moisture not only nourishes the flora but also supports the region's vibrant ecosystem, making May a pivotal month for both nature enthusiasts and adventurers alike.
As spring unfolds in Chamonix-Mont-Blanc, the humidity begins to dip from the brisk levels of winter. In May, the humidity settles at a moderate 78%, marking a noticeable shift from the higher percentages experienced in the early months of the year, like 91% in January and 87% in February. This gradual decline continues into the summer months, with June following at 75% and July reaching a comfortable 72%. The trend suggests a welcoming transition as the air becomes crisper, inviting both adventurers and nature lovers to revel in the stunning alpine scenery while enjoying a more pleasant climate.
In May, Chamonix-Mont-Blanc welcomes higher UV intensity, with a UV Index of 9 that falls into the very high exposure category. This trend towards increased sun intensity continues from April's UV Index of 8, highlighting a sharp rise as spring transitions into summer. With a burn time of just 15 minutes, outdoor enthusiasts should take cautious steps to protect their skin from harmful rays while they enjoy the beauty of the region. As the months progress, especially into June and July, the UV Index peaks at 10, emphasizing the need for sun safety. For more detailed information, check out the Chamonix-Mont-Blanc UV Index.
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May heralds a delightful turning point in Chamonix-Mont-Blanc, where the days grow longer and sunnier, boasting an impressive 362 hours of sunshine. Following a consistent upward trend from the cold winter months, this beautiful alpine destination transitions from the 173 hours of January to an invigorating start of summer. Each month prior sees incremental gains, with April offering 352 hours, hinting at the potential of May's radiance. As summer approaches, visitors can anticipate even more sunshine, peaking in July with 422 hours. This upward trajectory not only enhances outdoor adventures but also invites travelers to bask in the breathtaking beauty of the mountains under a brightening sky.
In Chamonix-Mont-Blanc, the likelihood of sunny weather in May stands at 26%, a noticeable drop from the vibrant spring months of March and April, both boasting a 44% chance. This reduction suggests that while May continues to embrace the charm of late spring, it may bring a mix of overcast days to balance its sunny moments. Interestingly, as the season progresses into summer, the chances increase slightly in June and July before peaking again in early autumn with 45% in October. Thus, if you're planning a trip in May, prepare for a delightful blend of sunshine and clouds, characteristic of this transitional month.
As spring unfolds into May in Chamonix-Mont-Blanc, the increase in daylight illuminates the stunning landscapes, offering 14 hours of sunlight that beckon outdoor enthusiasts. Following the gentle ascent from 9 hours in January to 10 hours in February, daylight gradually extends, reaching 11 hours in March and 13 hours in April. This steady climb culminates in May, where not only does the longer daylight enhance the scenic vistas, but it also amplifies opportunities for hiking and other alpine adventures. As summer approaches in June and July, daylight reaches its peak at 15 hours, creating a vibrant atmosphere that contrasts sharply with the shorter days of late autumn and winter, where daylight dips back down to 8 hours by December. This rhythm of light not only shapes daily activities but also adds a dynamic dimension to the seasonal experience in this breathtaking region.
In May, Chamonix-Mont-Blanc experiences a gentle average wind speed of 1.3 m/s (3 mph), mirroring the conditions of the preceding months. This continued softness in the breeze suggests a tranquil transition into summer, as May's winds resemble those of January through April, maintaining a consistent calm that invites outdoor exploration. Interestingly, the wind begins to slightly decrease in June, dropping to 1.1 m/s (2 mph), hinting at a serene atmosphere as the warmer weather approaches. Overall, May's wind patterns reflect stability and a gradual shift towards the lush, vibrant landscapes that characterize the alpine region as it gears up for the peak summer months.
The weather in Chamonix-Mont-Blanc 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 Chamonix-Mont-Blanc and find detailed weather information for every month.
May and January exhibit stark contrasts in weather patterns. In May, temperatures range from a chilly minimum of -12°C (11°F) to a pleasant maximum of 23°C (74°F), averaging around 7°C (45°F), while January is significantly colder, with minimum temperatures plunging to -25°C (-13°F) and an average of -8°C (19°F). Precipitation is more abundant in May, totaling 224 mm (8.8 in) over 21 days, compared to January's 171 mm (6.7 in) spread over just 10 days. Additionally, January's humidity is higher at 91%, compared to May's 78%. For more detailed insights on the winter climate, check out Chamonix-Mont-Blanc weather in January.
When comparing the weather in May and February, notable differences emerge in temperature and precipitation. February tends to be much colder, with average temperatures around -4°C (26°F) and minimums dropping to -21°C (-5°F), while May sees a more moderate average of 7°C (45°F) and maximums reaching up to 23°C (74°F). Precipitation is also higher in May, totaling 224 mm (8.8 in) over 21 days, compared to February's 141 mm (5.5 in) over just 11 days. Additionally, February experiences a slightly higher humidity level at 87%, compared to May's 78%. For a more detailed look at February weather in Chamonix, check out Chamonix-Mont-Blanc weather in February.
When comparing the weather in May and March, May offers a significantly warmer climate, with average temperatures rising to 7°C (45°F) and maxing out at 23°C (74°F). In contrast, March features much colder conditions, with average temperatures hovering around -1°C (31°F) and a maximum of only 14°C (58°F). Precipitation levels are higher in May at 224 mm (8.8 in) over 21 days, compared to March's 175 mm (6.9 in) over 15 days, although both months experience considerable humidity levels, with May at 78% and March slightly higher at 84%. For detailed information on March weather in Chamonix-Mont-Blanc, you can view Chamonix-Mont-Blanc weather in March.
In comparing the weather between April and May, it’s clear that May offers milder temperatures, with average highs reaching 23°C (74°F) compared to April's maximum of 17°C (63°F). The minimum temperatures in May also show a slight improvement, dropping to -12°C (11°F) from April's lower minimum of -16°C (3°F). However, May is significantly wetter, accumulating 224 mm (8.8 in) of precipitation over 21 days, in stark contrast to April's 84 mm (3.3 in) over 13 days. Humidity levels are relatively comparable, with May at 78% and April slightly higher at 83%. For more detailed insights into April's weather patterns, visit Chamonix-Mont-Blanc weather in April.
May and June present noticeable changes in weather patterns. In May, temperatures range from a chilly minimum of -12°C (11°F) to a comfortable maximum of 23°C (74°F), with an average of 7°C (45°F). The month is characterized by higher precipitation, totaling 224 mm (8.8 in) over 21 days, alongside a humidity level of 78%. In contrast, June sees a significant rise in temperature, with a minimum of -3°C (28°F) and a maximum of 28°C (83°F), yielding an average of 12°C (54°F). Precipitation decreases to 167 mm (6.6 in) across 20 days, and humidity slightly lowers to 75%. For those interested in exploring specific conditions, further details can be found in Chamonix-Mont-Blanc weather in June.
When comparing the weather in May and July, there is a noticeable shift in temperature and precipitation patterns. May experiences a wider temperature range with minimums dropping to -12°C (11°F) and maximums reaching 23°C (74°F), while July has milder temperatures, with minimums of 2°C (36°F) and maximums peaking at 27°C (81°F). Additionally, May sees higher precipitation levels at 224 mm (8.8 in) over 21 days, compared to July's 162 mm (6.4 in) over 18 days. This results in May having a higher humidity level of 78%, whereas July’s humidity averages around 72%. For more details on July's weather specifics, check out Chamonix-Mont-Blanc weather in July.
May and August present distinct weather patterns in terms of temperature, precipitation, and humidity. In May, temperatures can range from a chilly minimum of -12°C (11°F) to a comfortable maximum of 23°C (74°F), with an average temperature of 7°C (45°F). This month also sees significant rainfall, totaling 224 mm (8.8 in) over 21 days, accompanied by a high humidity level of 78%.
In contrast, August features milder temperatures, with a minimum of 2°C (36°F) and a maximum of 25°C (77°F), averaging at 13°C (56°F). Precipitation decreases to 149 mm (5.9 in) across 17 days, and humidity drops to a more comfortable 63%. For a more detailed look at the weather specifics for August, visit Chamonix-Mont-Blanc weather in August.
May and September exhibit notable differences in weather patterns. In May, temperatures range from a chilly minimum of -12°C (11°F) to a pleasant maximum of 23°C (74°F), with an average of 7°C (45°F). The month sees significant precipitation, totaling 224 mm (8.8 in) over 21 days, coupled with high humidity at 78%. In contrast, September experiences milder conditions with minimum temperatures of -8°C (19°F) and maximums reaching 21°C (71°F), averaging 10°C (49°F). Rainfall is considerably less in September, totaling 109 mm (4.3 in) across 16 days, with a slightly lower humidity of 73%. For more detailed insights, check out Chamonix-Mont-Blanc weather in September.
May and October present distinctly different weather patterns. In May, temperatures range from a chilly minimum of -12°C (11°F) to a pleasant maximum of 23°C (74°F), with an average of 7°C (45°F). This month experiences significant precipitation, totaling 224 mm (8.8 in) over approximately 21 days, accompanied by a humidity level of 78%. In contrast, October's temperatures are somewhat cooler, with a minimum of -8°C (18°F) and a maximum of 18°C (65°F), averaging around 5°C (42°F). The month sees less precipitation at 133 mm (5.3 in) over 13 days, but the humidity rises to 89%. For more detailed insights, you can check out the full forecast at Chamonix-Mont-Blanc weather in October.
May and November present distinct weather patterns, reflecting the transition from spring to late autumn. In May, temperatures range from a chilly -12°C (11°F) at their lowest to a pleasant 23°C (74°F) at their peak, with an average temperature of 7°C (45°F). The month sees significant rainfall, averaging 224 mm (8.8 in) over 21 days, and the humidity levels are moderately high at 78%.
In contrast, November brings colder conditions, with temperatures ranging from a minimum of -18°C (-1°F) to a maximum of 15°C (60°F), and an average of -1°C (30°F). Rainfall is lower in November, totaling 120 mm (4.7 in) over 13 days, but humidity rises slightly to 90%, contributing to a damp chill in the air. For those interested in more information, you can check out Chamonix-Mont-Blanc weather in November.
May and December present stark contrasts in weather conditions. In May, temperatures range from a chilly -12°C (11°F) at night to a pleasant 23°C (74°F) during the day, with an average of 7°C (45°F). This month experiences about 224 mm (8.8 in) of precipitation over 21 days, coupled with a humidity level of 78%. Conversely, December is significantly colder, with temperatures dropping as low as -23°C (-8°F), averaging -6°C (22°F) and peaking at 8°C (46°F). Precipitation also increases to 295 mm (11.6 in) across 19 days, accompanied by higher humidity at 90%. For those interested in more details, you can find information about Chamonix-Mont-Blanc weather in December.
As May unfolds in Chamonix-Mont-Blanc, it brings a refreshing shift from the lingering chill of winter to the more temperate embrace of spring. While temperatures start to rise, with daytime warmth occasionally reaching up to 23°C (74°F), the nights can still be brisk, reminding us that the peaks are never far away. However, the month also sees a notable increase in precipitation, with many days touched by rain, emphasizing the region's lush natural beauty. Humidity tends to be higher, adding to the vibrant atmosphere as the local flora begins to flourish. For a comprehensive overview of how May compares to other months in this stunning alpine locale, visit Chamonix-Mont-Blanc Climate.