October Weather in Rennes, France

Last updated: February 26, 2025

In Rennes, France, October brings a mix of mild days and chilly nights, with maximum temperatures reaching up to 24°C (76°F) and averaging around 13°C (55°F). As autumn settles in, temperatures can dip to a brisk 3°C (37°F), inviting cozy sweaters and warm beverages. Rain is a frequent visitor, contributing to a total precipitation of 88 mm (3.5 in) over 11 days, making it essential to keep an umbrella handy. With humidity levels at a comfortable 85%, the air carries the rich scent of falling leaves, encapsulating the essence of this enchanting season.

October Temperature in Rennes

As October arrives in Rennes, France, the transition to cooler autumn temperatures becomes evident. With minimums dipping to 3°C (37°F) and averages settling around 13°C (55°F), the month reflects a gentle decline from the warmth of September. The maximum temperature reaches a comfortable 24°C (76°F), allowing for pleasant days that still hint at summer's lingering touch. This shift brings an inviting crispness to the air, painting the landscapes in vibrant fall colors, perfect for leisurely strolls. While the chill begins to creep in, the overall conditions remain mild, making October a delightful month to experience the charm of Rennes bathed in autumnal beauty.

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

The chart illustrates October 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.

October Precipitation in Rennes

October in Rennes, France, marks a significant increase in precipitation compared to the preceding months, with an average of 88 mm (3.5 inches) falling over the course of 11 days. This surge contributes to the city's overall pattern where late autumn typically experiences heightened rainfall. The shift from September's 55 mm (2.2 inches) to October's abundant showers is a clear indication that the city is moving into a wetter season. As the vibrant colors of autumn foliage start to dominate the landscape, the increased moisture not only nourishes the environment but also sets the stage for the chillier months ahead. This trend continues into November and December, where precipitation remains elevated, indicating a seasonal rhythm deeply intertwined with Rennes' climate.

October Precipitation Trends in Rennes

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

In October, Rennes experiences a notable shift in humidity, with levels rising to 85% after the drier summer months. This increase indicates the onset of autumn, as the air becomes crisper and more moisture-laden. As the year progresses, humidity levels generally trend upward, peaking again in the winter months with 88% in November and hitting 90% in December. While the summer sees a dip to 65% in July, the return of higher humidity in October serves as a reminder of the region's characteristic dampness, setting the stage for the cooler days ahead. Overall, October reflects a key transitional period, with humidity levels serving as a marker of the changing seasons in Rennes.

October Average Humidity in Rennes

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

October UV Index in Rennes

In October, Rennes experiences a moderate UV Index of 4, marking a decline from the very high levels seen during the summer months. This shift allows for a more comfortable outdoor experience, with a burn time of 30 minutes before skin damage may occur. As the days grow shorter and temperatures drop, residents and visitors alike can enjoy the beautiful autumn scenery while remaining mindful of sun exposure. It’s a pleasant time to be outside, although sunscreen is still advisable for those planning to linger in the sun. For more detailed information on the UV Index throughout the year, visit Rennes UV Index.

Maximum UV Index Levels in Rennes for October

The chart shows the monthly maximum UV Index (UVI) for Rennes in October, 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 October 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.

October Sunshine in Rennes

As autumn settles in, October in Rennes, France invites a gentle shift in the atmosphere with its 262 hours of sunshine. While this marks a decline from the sun-kissed heights of summer, where July basked in 414 hours, it still showcases a vibrant trend compared to the earlier months of the year. This month bridges the gap between the long, radiant days of summer and the shorter, cooler days of winter, reflecting a gradual transition towards the cozy embrace of the colder months. With October's brightness, there's still ample opportunity to enjoy mild autumnal walks, bask in the tranquil beauty of nature, and savor the lingering warmth before the darker months descend.

Monthly Sunshine Duration in Rennes: October Highlighted

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

Chance of Sun in Rennes During October

In Rennes, France, the likelihood of sunny weather in October stands at 41%, reflecting a trend where autumn is not without its moments of brightness. As the year progresses, October enjoys a favorable outlook compared to the preceding months, particularly when juxtaposed with early autumn's September at 42%. This slight dip illustrates a transition into the cooler season, yet it's notable that October's sunshine probability remains robust. The gradual ascent from the dreariness of winter months, which linger around 20-28%, shows that Rennes is ripe for enjoying crisp, sunny days amidst the colorful fall foliage, making it an appealing time for outdoor activities.

Percentage of Sunny Days in October in Rennes

The chart illustrates the percentage of sunny days in Rennes throughout the year, with October 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 October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Rennes in October

As October arrives in Rennes, France, the quaint city experiences a gentle decline in daylight, offering approximately 10 hours of sunlight—a stark contrast to the sunlit splendor of summer. Following the peak months of May to July, when daylight stretched to 15 hours, October marks the transition into shorter days, reminiscent of the gradual fade into winter. This pattern signifies a retreat from the long summer evenings, as daylight slips from 12 hours in September down to 9 hours in November. Embracing this shift, locals often find beauty in the crisp autumn air and the vibrant hues of falling leaves, making October a season of reflection and change.

Average Daylight Hours in Rennes for October

The chart illustrates the variation in daylight duration in Rennes throughout the year, with October 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.

October Winds in Rennes

As October unfolds in Rennes, the wind whispers at an average speed of 3.6 m/s (8 mph), bringing a gentle breeze that marks a transition toward the chillier months ahead. This slight uptick from September's calm 3.0 m/s (7 mph) serves as a reminder of the dynamic weather patterns characteristic of the region. Comparatively, autumn winds tend to be milder than the gusts of earlier months, such as May's robust 4.3 m/s (10 mph). As the year progresses, the trend shows a gradual decline in wind speed from the spring, hitting its lowest in June at 2.7 m/s (6 mph) before refreshing the atmosphere in the fall. October’s breezy embrace invites residents and visitors alike to savor the beauty of the changing season, while hinting at the more blustery conditions to follow in the heart of winter.

Average October Wind Speed in Rennes

The chart displays monthly wind speed patterns in Rennes, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.84.43.93.54.32.73.53.43.03.6 m/s3.14.2
Data source: Rennes October wind data, generated using information from the Copernicus Climate Change Service.

How October 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 October'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.

In comparing the weather of October and January, October typically showcases milder temperatures, with minimums around 3°C (37°F) and maximums reaching up to 24°C (76°F), while January experiences much cooler conditions, with lows dropping to -7°C (19°F) and highs capping at 16°C (60°F). Precipitation in October is more frequent, averaging 88 mm (3.5 in) over about 11 days, compared to January's 46 mm (1.8 in) spread over just 9 days. Both months exhibit high humidity levels, with October at 85% and January slightly higher at 88%. For more details about January weather, you can visit this link: Rennes weather in January.

October and February in Rennes showcase contrasting seasonal characteristics. October experiences milder temperatures, with lows around 3°C (37°F) and highs reaching up to 24°C (76°F), while the average temperature stands at 13°C (55°F). The month is relatively wet, with 88 mm (3.5 in) of precipitation over 11 days, and humidity levels average around 85%.

In contrast, February brings colder conditions, with minimum temperatures dropping to -6°C (22°F) and an average of 7°C (45°F). Although highs can reach 21°C (69°F), the overall climate is chillier, and it sees less precipitation at 60 mm (2.3 in) over the same number of days. The humidity remains high at 87%, slightly higher than in October. For more details on February's weather, you can visit Rennes weather in February.

In April, weather continues to transition as temperatures begin to rise. October sees a warmer average temperature of 13°C (55°F), with daily maximums reaching up to 24°C (76°F), while March experiences cooler conditions, averaging 9°C (48°F) with similar peak temperatures. October is generally wetter, receiving about 88 mm (3.5 in) of precipitation over 11 days compared to March’s 58 mm (2.3 in) across 12 days. Both months exhibit high humidity levels, with October slightly higher at 85% compared to March’s 84%. For a more detailed look at the weather specifics in March, you can refer to Rennes weather in March.

October and April present contrasting weather experiences. In October, temperatures range from a chilly minimum of 3°C (37°F) to an average of 13°C (55°F), peaking at 24°C (76°F). The month sees about 88 mm (3.5 in) of precipitation over approximately 11 days, with humidity levels around 85%. In contrast, April features a wider range of temperatures, starting from a brisk -2°C (28°F), averaging 11°C (52°F), and reaching a maximum of 26°C (80°F). This month has less precipitation, totaling 48 mm (1.9 in) over 9 days, and slightly lower humidity at 83%. For a detailed look at April's weather in a specific region, check out Rennes weather in April.

In October, weather conditions tend to cool down significantly, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), averaging around 13°C (55°F). The month sees more precipitation compared to May, with about 88 mm (3.5 in) falling over 11 days and humidity levels peaking at 85%. In contrast, May enjoys slightly warmer temperatures, with a minimum of 0°C (32°F) and a maximum reaching 30°C (86°F), averaging 14°C (58°F). The precipitation is also less, totaling 67 mm (2.6 in) over the same number of days, and humidity is a bit lower at 81%. This makes May generally feel more pleasant, even if it occasionally has similar rainy days. For a detailed look at May weather in Rennes, you can check Rennes weather in May.

October and June offer notably different weather experiences. In October, temperatures range from a chilly 3°C (37°F) to a mild maximum of 24°C (76°F), with an average temperature of 13°C (55°F). The month sees approximately 88 mm (3.5 in) of rain over about 11 days, and the humidity levels are quite high at 85%. In contrast, June features warmer temperatures, with minimums around 6°C (44°F) and highs reaching up to 35°C (95°F), averaging 18°C (64°F). Despite slightly greater rainfall at 100 mm (3.9 in) on similar 11 rainy days, June maintains lower humidity levels at 75%. This substantial difference in temperature and humidity makes June feel significantly more summer-like compared to the cooler, wetter October. For more details, visit Rennes weather in June.

October and July present contrasting weather patterns. In October, temperatures range from a chilly minimum of 3°C (37°F) to a pleasant maximum of 24°C (76°F), with an average of 13°C (55°F). This month also sees higher precipitation levels, totaling 88 mm (3.5 in) over about 11 days, and a humidity level of 85%. In contrast, July boasts warmer temperatures with a minimum of 7°C (46°F) and a maximum soaring up to 37°C (99°F), averaging 19°C (67°F). This summer month experiences less rainfall, only about 50 mm (2.0 in) over 8 days, alongside lower humidity at 65%. For more specific details on July weather, you can visit Rennes weather in July.

In October, the weather is noticeably cooler than in August, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), compared to August's milder range of 7°C (46°F) to 35°C (96°F). Additionally, October experiences significantly more precipitation, totaling 88 mm (3.5 in) over 11 days, while August sees less rainfall at 53 mm (2.1 in) over just 8 days. The humidity also rises in October, reaching 85%, in contrast to the 67% humidity typical in August. For a detailed view of August weather, you can check Rennes weather in August.

In comparing the weather between September and October, October tends to be cooler with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 24°C (76°F), while September boasts warmer averages, with a minimum of 5°C (41°F) and a maximum of 32°C (90°F). Additionally, October experiences higher humidity levels at 85%, compared to 75% in September, contributing to a more damp atmosphere. Precipitation also increases in October, with an average of 88 mm (3.5 in) over 11 days, compared to 55 mm (2.2 in) over 9 days in September. For a detailed look at September weather, you can check out Rennes weather in September.

In October, the weather presents mild temperatures with a minimum of 3°C (37°F) and a pleasant average of 13°C (55°F), peaking at 24°C (76°F). Precipitation is relatively high at 88 mm (3.5 in), occurring on 11 days, while humidity hovers around 85%. In contrast, November sees a notable drop in temperature, with a minimum of -1°C (30°F) and an average of 8°C (48°F), reaching a maximum of 17°C (64°F). Rainfall decreases to 71 mm (2.8 in) across the same number of rainy days, and humidity slightly increases to 88%. For more detailed insights, visit Rennes weather in November.

October in Rennes welcomes a mild climate, with temperatures ranging from a minimum of 3°C (37°F) to a comfortable maximum of 24°C (76°F) and an average of 13°C (55°F). The month experiences about 88 mm (3.5 in) of precipitation over approximately 11 days, coupled with a relatively high humidity level of 85%. In contrast, December ushers in a cooler atmosphere, with temperatures dipping to a low of -3°C (26°F) and peaking at 16°C (60°F), resulting in a lower average of 7°C (46°F). Precipitation increases slightly to 97 mm (3.8 in) over 15 days and humidity levels rise to 90%. For a more detailed look at December weather, check out Rennes weather in December.

Compare Rennes's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Rennes

In October, Rennes experiences a noticeable transition in weather as the warmth of summer gives way to the crispness of autumn. With temperatures averaging around 13°C, the days can still be pleasantly mild, occasionally reaching up to 24°C, but the onset of cooler nights reminds us that winter is on the horizon. Rainfall becomes more frequent, evident in the 88 mm of precipitation spread over 11 days, adding a wet contrast to the season. Humidity levels rise to a significant 85%, creating an enveloping atmosphere that enhances the vibrant fall foliage. For a deeper dive into the unique climate nuances of Rennes, check out Rennes Climate.