July Weather in Rennes, France

Last updated: February 26, 2025

Summer weather in Rennes, France in July showcases a delightful blend of warmth and occasional showers. With a maximum temperature soaring to 37°C (99°F), the city experiences an average of 19°C (67°F), offering a comfortable atmosphere for both locals and tourists. However, nights can be cooler, dropping to a refreshing 7°C (46°F). Expect some rainfall, with an average of 50 mm (2.0 in) over about 8 days, bringing a touch of humidity at 65%. This combination of warmth and moisture creates a vibrant backdrop for exploring the rich culture and scenic beauty that Rennes has to offer during the heart of summer.

July Temperature in Rennes

In Rennes, France, July offers a delightful summer experience, showcasing a notable rise in temperatures as the month unfolds. The average temperature reaches a comfortable 19°C (67°F), while the minimum milds at 7°C (46°F), providing refreshing evenings. The peak of summer arrives with maximum temperatures soaring to an impressive 37°C (99°F), a contrast to the more temperate weather of the preceding months. This month stands out not just for its warmth but also for the vibrant energy it brings, making it an ideal time for outdoor activities and lively events in this charming city. As July passes, it sets the stage for a warm August, where similar climatic patterns continue to grace Rennes.

July Weather in Rennes: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Rennes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434548525764676561554745
Data source: Temperature data for Rennes generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Rennes

In Rennes, France, July typically experiences a moderate precipitation total of 50 mm (2.0 in), marking a slight decrease from the wetter month of June, which recorded 100 mm (3.9 in). This month sees around 8 rainy days, maintaining a trend of favorable summer weather while still providing the occasional refreshing downpour. The shift from June to July often signifies a gradual easing in rainfall, allowing for more sun-soaked days and outdoor activities. As the city transitions into summer's peak, the balance of warmth and intermittent rain continues to characterize Rennes' climate, setting the stage for pleasant summer experiences.

July Precipitation Trends in Rennes

The chart displays monthly precipitation patterns in Rennes, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec4660584867100505355887197
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Rennes

In Rennes, France, July marks a noticeable shift in humidity levels, dipping to 65%, the lowest point of the year. This decline continues a seasonal trend of decreasing humidity from the peak of 88% in January, gradually easing as spring unfolds. By June, humidity has already receded to 75%, reflecting the onset of warmer months. As summer progresses into August, a slight rise to 67% follows, yet July remains distinctly more comfortable. This pattern underscores a typical summer in Rennes, where the breezy and drier conditions invite both locals and visitors to enjoy the vibrant outdoor life.

July Average Humidity in Rennes

This chart illustrates the average monthly humidity levels in Rennes, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%84%83%81%75%65%67%75%85%88%90%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Rennes

In July, Rennes experiences a UV Index of 9, maintaining its spot in the very high exposure category. This consistency from the previous month signals a peak in solar radiation, underscoring the importance of sun protection during outdoor activities. With a burn time of just 15 minutes, residents and visitors alike should be vigilant to minimize skin damage. This trend of increasing UV levels began in April, when the index surged to 6, and has only escalated since, peaking in both July and June. As summer progresses, the decreased burn times in the warmer months emphasize the need for heightened awareness and precaution. For more detailed information on the UV Index in Rennes, explore Rennes UV Index.

Maximum UV Index Levels in Rennes for July

The chart shows the monthly maximum UV Index (UVI) for Rennes in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec235689986422
Data source: Rennes July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Rennes

In Rennes, France, the month of July stands out with an impressive 414 hours of sunshine, making it the sunniest month of the year. This vibrant peak is a culmination of a gradual increase in sunlight that begins in the early months, starting with 135 hours in January and steadily rising through spring with 398 hours in May. As summer takes hold, not only does July shine brightly, but it also transitions smoothly into a slightly cooler August, which still enjoys a robust 383 hours of sunshine. This trend showcases Rennes' delightful summers, inviting residents and visitors alike to bask in the warmth before the daylight hours begin to taper off in the fall. Overall, the sunny strides from January to July highlight the enchanting allure of Rennes' summer, perfectly setting the stage for outdoor adventures and vibrant city life.

Monthly Sunshine Duration in Rennes: July Highlighted

The July sunshine duration represents the total number of hours Rennes experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec135h200h283h347h398h387h414h383h324h262h218h185h
Data source: Rennes July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Rennes During July

In Rennes, France, July presents a moderate likelihood of sunny weather, with a 41% chance of sunshine. This figure reflects a slight decrease from the peak of April, which showcases 56% sunny chances, suggesting that summer in Rennes is often a mix of sun and clouds. Interestingly, the likelihood of sunny days remains relatively stable into August, dipping only slightly to 39%. Overall, while July may not guarantee a sun-drenched holiday, it still offers a fair share of bright moments, promising a delightful summer ambiance for those exploring the city's charm.

Percentage of Sunny Days in July in Rennes

The chart illustrates the percentage of sunny days in Rennes throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Rennes experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%28%48%56%34%36%42%39%42%41%37%25%
Data source: Rennes July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rennes in July

In Rennes, France, the month of July brings a delightful continuation of long daylight hours, matching the peak of 15 hours that began in June. This extended light not only enhances the vibrancy of summer but also encourages outdoor activities and exploration. As the calendar transitions into late summer, daylight begins to gradually wane, with August seeing a slight reduction to 14 hours. This trend reflects a seasonal shift, as vibrant long days give way to shorter hours, heralding the approach of autumn. Overall, July stands out as a high point in the annual cycle of daylight, perfectly embodying the spirit of summer in Rennes.

Average Daylight Hours in Rennes for July

The chart illustrates the variation in daylight duration in Rennes throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 52m10h 13m11h 56m13h 40m15h 10m15h 56m15h 32m14h 11m12h 31m10h 47m9h 14m8h 26m
Data source: Rennes daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Rennes

In July, the wind in Rennes, France settles into a mild rhythm, with an average speed of 3.5 m/s (8 mph). This gentle breeze mirrors a slight increase from the notably calm June, when winds dipped to 2.7 m/s (6 mph), offering a refreshing change as summer unfolds. Although July’s winds are consistent with the earlier months of the year, they are notably calmer compared to the spring months; May had an average of 4.3 m/s (10 mph). As summer transitions towards August, the winds hold steady, creating a pleasant atmosphere well-suited for outdoor enjoyment. The overall trend reveals a gradual decline in wind speed as the year progresses, hinting at the serene character of Rennes during the warmer months.

Average July Wind Speed in Rennes

The chart displays monthly wind speed patterns in Rennes, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.84.43.93.54.32.73.5 m/s3.43.03.63.14.2
Data source: Rennes July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Rennes Compares to Other Months

The weather in Rennes 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 Rennes and find detailed weather information for every month.

July and January present striking contrasts in weather. July typically boasts a mild average temperature of 19°C (67°F), with daytime highs reaching up to 37°C (99°F), while January averages a chilly 6°C (43°F), with maximum temperatures only hitting 16°C (60°F). Precipitation levels remain relatively similar, with July receiving about 50 mm (2.0 in) over 8 days, compared to January's 46 mm (1.8 in) over 9 days. The humidity, however, differs significantly; July has a comfortable 65%, whereas January's humidity is markedly higher at 88%. For more insights into the January weather, you can check out Rennes weather in January.

July and February present stark contrasts in weather conditions. July enjoys warmer temperatures with a minimum of 7°C (46°F) and a maximum of 37°C (99°F), averaging around 19°C (67°F). The month also experiences relatively low precipitation at 50 mm (2.0 in) over 8 days, with a humidity level of 65%. In contrast, February is notably cooler, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 21°C (69°F), averaging 7°C (45°F). This month sees slightly more precipitation, totaling 60 mm (2.3 in) over 11 days, along with higher humidity levels at 87%. For a detailed look at February conditions, visit Rennes weather in February.

In comparing the weather of July and March, significant differences in temperature and humidity are evident. July boasts warmer temperatures, with a minimum of 7°C (46°F) and a maximum that can reach up to 37°C (99°F), resulting in an average of 19°C (67°F). In contrast, March presents a chillier landscape, starting at a minimum of -7°C (20°F) and peaking at 24°C (75°F), with an average temperature of 9°C (48°F). Precipitation is relatively similar, with July receiving about 50 mm (2.0 in) over 8 days and March slightly higher at 58 mm (2.3 in) over 12 days. Additionally, humidity in March is markedly higher at 84% compared to 65% in July, adding to the feel of crispness in early spring. For more information on March weather, please visit Rennes weather in March.

In comparing the weather between July and April, July typically boasts significantly warmer temperatures, with an average of 19°C (67°F) and a maximum reaching up to 37°C (99°F). In contrast, April experiences cooler temperatures, averaging around 11°C (52°F) and peaking at 26°C (80°F). Although July has slightly higher precipitation at 50 mm (2.0 in) over 8 days, April’s precipitation is close behind at 48 mm (1.9 in) across 9 days, with the latter also featuring higher humidity at 83%. For more detailed insights into April's weather, you can check Rennes weather in April.

In comparing the weather in May and July, a significant difference in temperature is evident. May typically experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 14°C (58°F), while July boasts higher temperatures, ranging from a minimum of 7°C (46°F) to an average of 19°C (67°F) and maxima reaching 37°C (99°F). Precipitation is slightly higher in May, totaling 67 mm (2.6 in) over 11 rainy days, compared to July's 50 mm (2.0 in) over 8 days. Additionally, May comes with increased humidity at 81%, compared to July’s 65%. For a more detailed look at the weather conditions of May, you can check Rennes weather in May.

In comparing the weather of July and June, July tends to be warmer with average temperatures ranging from a minimum of 7°C (46°F) to a maximum of 37°C (99°F), while June's temperatures range from 6°C (44°F) to 35°C (95°F). Although July sees a slight decrease in precipitation, accumulating 50 mm (2.0 in) over 8 days, June experiences significantly more rainfall at 100 mm (3.9 in) across 11 days. Additionally, the humidity levels drop in July to 65% compared to the higher 75% in June, which may contribute to a more comfortable feeling during the warmer days. For more detailed insights into June weather specifically, you can check out Rennes weather in June.

In July, temperatures begin with a minimum of 7°C (46°F) and reach a maximum of 37°C (99°F), resulting in an average of 19°C (67°F). The month experiences around 50 mm (2.0 in) of precipitation over 8 days, with humidity levels at 65%. Conversely, August presents a similar pattern, with the minimum temperature remaining at 7°C (46°F) and an average of 19°C (66°F). However, it sees a slightly lower maximum of 35°C (96°F) and slightly more precipitation at 53 mm (2.1 in), also over 8 days, while humidity increases slightly to 67%. For more detailed insights into August weather, check out Rennes weather in August.

In comparing the weather of July and September, July typically offers warmer temperatures, with an average of 19°C (67°F) and highs reaching up to 37°C (99°F). However, it also comes with a notable humidity of 65% and 50 mm of precipitation over about 8 rainy days. On the other hand, September presents a cooler climate, with an average temperature of 16°C (62°F) and maximums of 32°C (90°F). While it experiences slightly more rainfall at 55 mm and 9 days of precipitation, the humidity increases to 75%. For a more detailed overview, you can check Rennes weather in September.

July and October exhibit distinctively different weather patterns. In July, temperatures range from a mild 7°C (46°F) at night to a scorching maximum of 37°C (99°F) during the day, with an average temperature of 19°C (67°F). This month sees relatively low precipitation of 50 mm (2.0 in) over about 8 days, and humidity levels hover around 65%. In contrast, October experiences cooler temperatures, with a minimum of 3°C (37°F), an average of 13°C (55°F), and a maximum of 24°C (76°F). Precipitation increases to 88 mm (3.5 in) over 11 days, and humidity rises significantly to 85%. For a detailed look at the weather specifics, you can visit Rennes weather in October.

July and November present stark contrasts in weather patterns. In July, temperatures range from a minimum of 7°C (46°F) to a scorching maximum of 37°C (99°F), with an average of 19°C (67°F). This month experiences relatively low precipitation, totaling 50 mm (2.0 in) over about 8 days, along with a moderate humidity level of 65%. In contrast, November sees much cooler temperatures, with a minimum of -1°C (30°F) and an average of 8°C (48°F), peaking at 17°C (64°F). Precipitation increases to 71 mm (2.8 in) over approximately 11 days and humidity rises significantly to 88%. For more detailed information on November weather, check out Rennes weather in November.

The weather in July and December presents a stark contrast. In July, temperatures range from a minimum of 7°C (46°F) to a maximum of 37°C (99°F), with an average around 19°C (67°F). This month experiences less precipitation, totaling 50 mm (2.0 inches) over about 8 days, along with a moderate humidity level of 65%. In contrast, December features considerably cooler temperatures, ranging from a minimum of -3°C (26°F) to a maximum of 16°C (60°F), with an average of 7°C (46°F). Precipitation is higher in December, reaching 97 mm (3.8 inches) over 15 days, and humidity levels increase to 90%. For more details, check out Rennes weather in December.

Compare Rennes's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Rennes

In July, Rennes experiences a refreshing departure from the chillier months, showcasing an inviting average temperature of 19°C (67°F) that tantalizes both locals and visitors alike. While the month can touch maximum temperatures soaring up to 37°C (99°F), those steamy days are often tempered by a relatively mild minimum of 7°C (46°F) at night, providing a comfortable respite. The humidity sits around 65%, adding a touch of warmth to the air, while light precipitation, averaging 50 mm (2.0 in) over about 8 days, keeps the landscape lush. This makes July not only the warmest month in Rennes but also a perfect time to explore its beautiful surroundings. For more detailed insights, check out Rennes Climate.