Last updated: February 26, 2025
Experience the summer charm of Chamonix-Mont-Blanc in July, where temperatures can soar to a delightful 27°C (81°F), while the average hovers around a pleasant 14°C (57°F). Expect cooler evenings, with minimum temperatures dipping to 2°C (36°F). While the stunning alpine scenery beckons, prepare for occasional showers, as July sees 162 mm (6.4 in) of precipitation spread over 18 days. With a humidity level of 72%, the air is refreshingly crisp, making it the perfect time for outdoor adventures amidst the breathtaking landscapes.
In Chamonix-Mont-Blanc during July, temperatures reach a delightful peak, reflecting the region's vibrant summer atmosphere. With a minimum of 2°C (36°F) and an average of 14°C (57°F), the month showcases a significant shift from the frigid winter lows of January, where temperatures plummet to -25°C (-13°F). By July, daytime highs quickly climb to a maximum of 27°C (81°F), providing a perfect backdrop for outdoor enthusiasts to explore the breathtaking Alpine landscape. This warm wave marks a distinct contrast to the chill of earlier months, making July an inviting time for hikers and visitors eager to embrace the beauty of the mountains under sunny skies.
In July, Chamonix-Mont-Blanc experiences a moderate level of precipitation, averaging 162 mm (6.4 in) across approximately 18 days. This month typically sees a slight decrease compared to the wetter May (224 mm) and June (167 mm), indicating the start of a dry spell as summer progresses. Despite the reduction in total rainfall, the frequency of precipitation days remains relatively high, suggesting that visitors can expect a mix of sunny moments alongside occasional summer showers. This pattern contributes to the lush alpine landscapes that Chamonix is renowned for, making it a captivating destination for outdoor enthusiasts and nature lovers during this transitional period of the year.
In Chamonix-Mont-Blanc, July marks a transition into the drier summer months, with humidity levels dipping to a comfortable 72%. This reduction in dampness is part of a broader trend, as humidity steadily decreases from the winter months, starting at a high of 91% in January. By the time summer arrives, the region experiences a refreshing decline, culminating in the lowest humidity recorded in August at 63%. As the seasons progress, humidity gradually rises again, peaking once more in the crisp air of autumn and winter. This cyclical pattern not only enhances the summer's outdoor appeal but also underlines Chamonix's unique climatic charm throughout the year.
In July, Chamonix-Mont-Blanc experiences its peak UV Index, reaching a high of 10, indicative of very high exposure levels. This intensity not only mirrors June's peak but also emphasizes a strong trend of increasing UV strength as summer progresses. With a burn time of just 15 minutes, it's crucial for outdoor enthusiasts to take precautions, such as sunscreen application and protective clothing, to shield against potential skin damage. As the season transitions into August, the UV Index slightly decreases to 9, but the risk remains significant. For more detailed insights and guidance on managing sun exposure, explore the Chamonix-Mont-Blanc UV Index.
UV Risk Categories
In July, Chamonix-Mont-Blanc basking in the embrace of sunshine shines the brightest, boasting an impressive 422 hours of sunlight—the peak of summer. This month not only marks a high point in sunlit days but builds on a steady upward trend from January's modest 173 hours. As spring merges into summer, the daylight hours progressively increase, culminating in July before slightly tapering off in August with 392 hours. This vibrant display of sunshine perfectly complements the region's stunning landscapes, making it an idyllic time for outdoor adventures and exploration in the heart of the French Alps. The gradual growth in sunlight from the winter months creates a refreshing atmosphere that invites both locals and visitors to savor the beauty of Chamonix under the warm July sky.
As July rolls around in Chamonix-Mont-Blanc, the likelihood of sunshine embraces a moderate 33% chance, marking a dynamic shift from the preceding months. This figure reveals a subtle increase from the slightly overcast June, yet it lags behind the more promising sunny probabilities seen in earlier months like March and April, each reaching 44%. Interestingly, July’s sunshine potential is subsequently boosted in August, which experiences a 37% chance, hinting at the region’s fluctuating weather patterns throughout the summer. Embracing the vibrant essence of the Alps, visitors can anticipate a blend of sunshine and summer allure, albeit with the possibility of those picturesque mountain clouds.
In Chamonix-Mont-Blanc, July brings a peak in daylight, with approximately 15 hours of sun illuminating the stunning landscapes. This month maintains the same daylight duration as June, offering plenty of time for outdoor adventures amid the majestic Alps. As summer unfolds, the trend of lengthening days reaches its zenith, following the gradual increase that starts from the winter months. While August sees a slight dip back to 14 hours of daylight, it still promises ample sunshine for hikers and nature enthusiasts eager to explore the breathtaking scenery. Overall, July is a month of vibrant energy, as the long days provide an ideal backdrop for unforgettable alpine experiences.
In July, Chamonix-Mont-Blanc experiences a gentle embrace from the wind, with an average speed of 1.1 m/s (3 mph), mirroring the light breezes of the preceding month. This subtle consistency in wind speed from June through July suggests a tranquil summer atmosphere, perfect for outdoor enthusiasts eager to explore the breathtaking alpine landscape. As the months progress, wind speeds gradually nudge up in August and October, yet the occasional whispers of summer air remain a defining feature of this idyllic mountainous region. This harmonious blend of calm winds and the stunning scenery creates an inviting haven for both adventurers and those seeking relaxation alike.
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 July'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.
July and January present a striking contrast in weather conditions. In July, temperatures range from a cool 2°C (36°F) at night to a comfortable max of 27°C (81°F), with an average of 14°C (57°F). However, this month also sees considerable rainfall, with 162 mm (6.4 in) of precipitation over approximately 18 days, coupled with a moderate humidity of 72%. In contrast, January is marked by frigid conditions, boasting minimum temperatures plunging to -25°C (-13°F) and an average of -8°C (19°F), while the maximum reaches a mere 6°C (44°F). This winter month experiences slightly more precipitation, totaling 171 mm (6.7 in), but over only 10 days, contributing to a much higher humidity of 91%. For a more detailed understanding of January's climate in Chamonix-Mont-Blanc, check out Chamonix-Mont-Blanc weather in January.
July and February present strikingly contrasting weather conditions. In July, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), with an average of around 14°C (57°F). This month experiences considerable rainfall, averaging 162 mm (6.4 in) over 18 days and a humidity level of 72%. In contrast, February offers a much harsher climate, with temperatures dropping to a minimum of -21°C (-5°F) and peaking at just 11°C (52°F), averaging -4°C (26°F). Although February receives slightly less precipitation at 141 mm (5.5 in) over 11 days, it has a higher humidity level of 87%. For more details on February's conditions, you can check Chamonix-Mont-Blanc weather in February.
In comparing the weather between July and March, the contrasts are striking. July experiences milder temperatures, with a minimum of 2°C (36°F) and a comfortable average of 14°C (57°F), peaking at a maximum of 27°C (81°F). In contrast, March remains frigid, showcasing a significant minimum of -25°C (-12°F) and an average of -1°C (31°F), with a maximum not exceeding 14°C (58°F). Precipitation levels are relatively high in both months, with July receiving 162 mm (6.4 in) over 18 days and March slightly higher at 175 mm (6.9 in) over 15 days. Humidity is also notable, being slightly lower in July at 72% compared to March's 84%. For more details on March weather, you can visit Chamonix-Mont-Blanc weather in March.
In comparing the weather of July and April, July emerges as significantly warmer, with average temperatures reaching 14°C (57°F) and maximums soaring to 27°C (81°F). In contrast, April experiences much cooler conditions, with averages around 3°C (38°F) and maximums only reaching up to 17°C (63°F). July also sees higher precipitation, totaling 162 mm (6.4 in) over 18 days, compared to April’s 84 mm (3.3 in) across 13 days. Additionally, while July has a humidity level of 72%, April is slightly higher at 83%. For a detailed look at April weather, you can visit Chamonix-Mont-Blanc weather in April.
Comparing the weather in July and May reveals some notable differences. July features a milder temperature range with a minimum of 2°C (36°F), an average of 14°C (57°F), and a maximum of 27°C (81°F), making it generally warmer than May. In contrast, May experiences a broader temperature spread, with lows reaching -12°C (11°F) and highs peaking at 23°C (74°F), resulting in an average of 7°C (45°F). Precipitation levels in May are higher, totaling 224 mm (8.8 in) over 21 days, compared to July's 162 mm (6.4 in) spread across 18 days. Additionally, May has a slightly higher humidity level at 78%, while July sits at 72%. For a more detailed look at May's weather patterns, visit Chamonix-Mont-Blanc weather in May.
In comparing the weather in July and June, we see some notable differences. July features a minimum temperature of 2°C and an average of 14°C, while June has a colder minimum of -3°C and an average of 12°C. Both months experience similar maximum temperatures, with July reaching up to 27°C and June slightly higher at 28°C. Precipitation levels are relatively close, with July receiving 162 mm over 18 days and June slightly higher at 167 mm over 20 days. Humidity remains similar, with July at 72% and June at 75%. For more detailed insights, check out Chamonix-Mont-Blanc weather in June.
In comparing the weather of July and August, we see some notable differences. July experiences slightly warmer temperatures, with an average of 14°C (57°F) and a maximum of 27°C (81°F), while August cools down a bit, averaging 13°C (56°F) with a maximum of 25°C (77°F). Precipitation remains significant in both months, although July has more rain, totaling 162 mm (6.4 in) over 18 days compared to August's 149 mm (5.9 in) over 17 days. Additionally, humidity levels are higher in July at 72%, dropping to 63% in August, indicating slightly drier conditions as summer progresses. For more detailed weather insights specific to August, you can visit Chamonix-Mont-Blanc weather in August.
Comparing the weather of July and September reveals notable differences in temperature and precipitation patterns. In July, temperatures show a broader range with a minimum of 2°C (36°F), an average of 14°C (57°F), and soaring up to a maximum of 27°C (81°F). However, this month also experiences higher precipitation, totaling 162 mm (6.4 in) across 18 days, often accompanied by humidity levels around 72%. In contrast, September experiences cooler conditions with minimum temperatures dropping to -8°C (19°F) and an average of 10°C (49°F), peaking at 21°C (71°F). Precipitation is also reduced to 109 mm (4.3 in) over 16 days, while humidity remains relatively stable at 73%. For more detailed insights, you can check Chamonix-Mont-Blanc weather in September.
July and October present stark contrasts in weather patterns. In July, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). This month experiences considerable rainfall, averaging 162 mm (6.4 in) over 18 days, accompanied by a moderate humidity of 72%. In contrast, October brings colder conditions with temperatures dipping to a minimum of -8°C (18°F) and an average of 5°C (42°F), while the maximum reaches 18°C (65°F). Despite a lower total precipitation of 133 mm (5.3 in) over 13 days, October has higher humidity at 89%. For a more detailed look at October weather specifics, visit Chamonix-Mont-Blanc weather in October.
July and November showcase distinctly different weather patterns. In July, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). This month experiences considerable precipitation, with 162 mm (6.4 in) spread over 18 days, while humidity levels hover around 72%. In contrast, November brings much colder temperatures, with a minimum of -18°C (-1°F) and an average of -1°C (30°F), peaking at 15°C (60°F). Although precipitation is lower at 120 mm (4.7 in) over 13 days, the humidity rises to 90%. For more detailed insights, check out Chamonix-Mont-Blanc weather in November.
July and December present strikingly different weather patterns. In July, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). This month experiences moderate precipitation of 162 mm (6.4 in) over 18 days, accompanied by a humidity level of 72%, making it feel warm yet occasionally damp. In contrast, December ushers in frigid conditions, with temperatures plummeting to a minimum of -23°C (-8°F) and reaching a maximum of 8°C (46°F), averaging at -6°C (22°F). The month is notably wetter, receiving 295 mm (11.6 in) of precipitation over 19 days, and a higher humidity level of 90%. For a detailed look at weather conditions during this chilly month, you can refer to Chamonix-Mont-Blanc weather in December.
In July, Chamonix-Mont-Blanc experiences a delightful summer transformation, with warmer temperatures making it a popular time for outdoor enthusiasts. Compared to the cooler months, the city basks in maximum highs, inviting visitors to hike and explore its breathtaking landscapes. However, July also brings a good deal of precipitation, with nearly half the month seeing rainfall, keeping the valleys lush and vibrant. Despite the humidity hovering around 72%, the invigorating mountain air provides a refreshing escape from the heat. To learn more about what to expect throughout the year, visit Chamonix-Mont-Blanc Climate.