September Weather in Andorra, Spain

Last updated: February 6, 2025

September in Andorra, Spain, offers a delightful blend of warm and crisp weather, with maximum temperatures peaking at 34°C (94°F) and an average of 20°C (69°F). As autumn approaches, the air becomes fresher, with minimum temperatures dipping to 6°C (43°F). Although the month sees some precipitation, totaling 38 mm (1.5 in) over 6 days, the humidity remains moderate at 64%, making it a comfortable time to explore the stunning landscapes and vibrant culture of this picturesque region.

September Temperature in Andorra

In September, temperatures in Andorra and Spain begin to hint at the transition to autumn, offering a delightful blend of warmth and comfort. With minimums averaging around 6°C (43°F), the crispness of early fall is felt, while average highs reach a pleasant 20°C (69°F), inviting outdoor adventures. The sun still shines brightly, allowing for peaks of 34°C (94°F), reminiscent of summer's last hurrah. This month stands out as a time when both locales shed the intense summer heat while maintaining enough warmth for leisurely days outdoors, making it an ideal period for exploration and relaxation before the cooler months set in.

September Weather in Andorra: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Andorra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434851556471777768605046
Data source: Temperature data for Andorra generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Andorra

September in Andorra marks a transition as summer gives way to autumn, reflected in the average precipitation of 38 mm (1.5 in) over 6 days—a slight increase from the drier months of July and August. This uptick in rainfall, albeit modest, prepares the landscape for the cooler months ahead, contrasting with the wetter spell experienced in April and November. As the year progresses, September's precipitation hints at the changing seasons, bridging the gap between the bright summer days and the upcoming autumnal moisture. This seasonal shift is essential for both the region's ecology and its picturesque landscapes, ensuring that Andorra remains a vibrant tapestry of nature throughout the year.

September Precipitation Trends in Andorra

The chart displays monthly precipitation patterns in Andorra, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec481832864649232238366430
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Andorra

In September, Andorra experiences a notable rise in humidity, averaging around 64%. This increase marks a return to more humid conditions following the drier months of summer, where July and August lingered at 58%. The trend shows a gradual shift from the cool, crisp air of spring, wherein April's humidity dipped to 69%, to the more saturated atmosphere of autumn. As the year progresses, humidity begins to climb again, peaking in October at 76%, hinting at the approaching winter months characterized by increased moisture. This gradual fluctuation in humidity not only provides a diverse climate experience throughout the year but also enhances Andorra's stunning natural landscapes and vibrant seasonal transitions.

September Average Humidity in Andorra

This chart illustrates the average monthly humidity levels in Andorra, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%73%69%64%59%58%58%64%76%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Andorra

As autumn approaches in Andorra, Spain, the UV Index begins to decline from the summer's peak. In September, the UV Index stands at a very high level of 8, suggesting that while the risk of harm from unprotected sun exposure remains significant, it is decreasing from the extreme levels experienced in July and June. With a burn time of just 15 minutes, it's crucial for residents and visitors alike to take care when basking in the sun's rays. This trend of diminishing UV levels will continue into October, further emphasizing the importance of sun safety in the transitional months. For more detailed insights on UV trends throughout the year, visit Andorra UV Index.

Maximum UV Index Levels in Andorra for September

The chart shows the monthly maximum UV Index (UVI) for Andorra in September, 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.
JanFebMarAprMayJunJulAugSepOctNovDec34689111198642
Data source: Andorra September 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.

September Sunshine in Andorra

As summer fades into autumn, September in Andorra, Spain, offers a delightful transition marked by 347 hours of sunshine. This month still boasts ample daylight, drawing on the lingering warmth of the previous months, particularly July, which sees the year's peak with 431 hours. Following the vibrant energy of summer, September experiences a gentle decline in sun exposure, yet outshines the winter months, making it a perfect time for outdoor adventures. The trend clearly illustrates a steady rise in sunshine hours from January’s 208 hours, peaking in mid-summer before tapering down gracefully. This rhythm of light not only enhances the beauty of the landscape but also invites visitors to savor the delightful charm of early autumn in the Pyrenees.

Monthly Sunshine Duration in Andorra: September Highlighted

The September sunshine duration represents the total number of hours Andorra experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec208h266h326h342h407h414h431h399h347h320h254h263h
Data source: Andorra September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Andorra During September

In September, Andorra experiences a 45% chance of sunny weather, a slight dip compared to the vibrant summer months of July and August, which boast chances of 75% and 66% respectively. This transitional period marks the beginning of autumn, where the pleasant warmth of late summer begins to wane. Interestingly, September's sunshine likelihood is relatively close to that of October, which enjoys a 59% chance of sun, suggesting a gradual shift rather than an abrupt change. As the season shifts, visitors can expect a mix of lingering warmth and the first hints of fall, making it a uniquely charming time to enjoy Andorra's landscapes.

Percentage of Sunny Days in September in Andorra

The chart illustrates the percentage of sunny days in Andorra throughout the year, with September 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 Andorra experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec48%39%56%43%42%56%75%66%45%60%50%52%
Data source: Andorra September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Andorra in September

As summer draws to a close, September in Andorra, Spain, welcomes a gradual shift in daylight duration, offering about 12 hours of sunlight. This marks a subtle decline from the peak of 15 hours experienced in June, as the days gradually shorten. The month of September captures the essence of transition, blending the lingering warmth of summer with the crisp hints of autumn. Following a vibrant August with 13 hours of daylight, September's longer evenings invite outdoor gatherings and cozy moments under the evening sky. This progressive dimming sets the stage for October's further reduction to 11 hours, signaling the approach of winter and the inevitable dance of seasons in this picturesque European locale.

Average Daylight Hours in Andorra for September

The chart illustrates the variation in daylight duration in Andorra throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 57m13h 19m14h 28m15h 2m14h 44m13h 43m12h 25m11h 4m9h 53m9h 16m
Data source: Andorra daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Andorra

As autumn begins to paint Andorra with hues of gold, September ushers in cooler breezes with an average wind speed of just 2.3 m/s (5 mph), the lightest of the year. This notable decrease from the summer months reflects a gentle transition, as the wind softens from August's 2.8 m/s (6 mph) and paves the way for the crispness of October. Interestingly, following the warmer summer, which maintained a steadier wind pace around 3.0 m/s (7 mph), September feels more tranquil, marking a shift towards cozy seasonal changes. As the landscape prepares for winter’s embrace, the winds echo a soothing calm, inviting both residents and visitors to enjoy the serene beauty of the Andorran valleys.

Average September Wind Speed in Andorra

The chart displays monthly wind speed patterns in Andorra, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.53.33.52.83.02.53.02.82.3 m/s2.54.13.7
Data source: Andorra September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Andorra Compares to Other Months

The weather in Andorra changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Andorra and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with a comfortable average of 20°C (69°F), and relatively low precipitation at 38 mm (1.5 in) over 6 days, contributing to a humidity level of 64%. In stark contrast, January features much colder conditions, with temperatures dropping to a minimum of -6°C (22°F) and peaking at 21°C (71°F), resulting in a lower average of just 6°C (43°F). Precipitation increases slightly to 48 mm (1.9 in) across the same number of days, along with higher humidity at 85%. For more details on January weather, you can visit Andorra weather in January.

In September, the weather is considerably warmer, with average temperatures reaching 20°C (69°F) and maximum highs of 34°C (94°F), making it a pleasant time for outdoor activities. The month experiences relatively low precipitation, averaging 38 mm (1.5 in) over about six days, and humidity levels are moderate at 64%. In contrast, February brings a notable chill, with average temperatures dropping to around 9°C (49°F) and minimums reaching -4°C (26°F). Precipitation is lighter, totaling 18 mm (0.7 in) over just three days, but the humidity is higher at 80%, lending a damp feel to the cold air. For more detailed insights into February weather, you can check out Andorra weather in February.

September and March offer contrasting weather experiences. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average of 20°C (69°F), making it warmer overall. The month experiences 38 mm (1.5 in) of precipitation over 6 days, coupled with a humidity level of 64%. In contrast, March features cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 27°C (81°F), averaging 11°C (51°F). It has slightly less precipitation at 32 mm (1.3 in) over the same number of rainy days, but a higher humidity of 73%. For more details on March weather, check Andorra weather in March.

September and April showcase distinct weather characteristics, highlighting the transition between seasons. In September, temperatures range from a mild 6°C (43°F) at night to a warm 34°C (94°F) during the day, with an average of 20°C (69°F). The month experiences relatively low humidity at 64% and only 38 mm (1.5 in) of precipitation over about six days. In contrast, April presents cooler temperatures, with a minimum of -2°C (29°F), an average of 13°C (55°F), and a maximum of 28°C (82°F). It also features higher precipitation at 86 mm (3.4 in) across 11 days and slightly increased humidity at 69%. The contrast in temperatures and precipitation between these months can be explored further at Andorra weather in April.

When comparing the weather in September and May, both months exhibit relatively mild temperatures, but September tends to be slightly warmer overall. In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average of 20°C (69°F). In contrast, May has a minimum temperature of 4°C (39°F) and a slightly lower average of 18°C (64°F), though it can reach a maximum of 35°C (96°F).

Precipitation in May is slightly higher, with 46 mm (1.8 in) expected over an average of 7 days, compared to 38 mm (1.5 in) over 6 days in September. Both months share the same humidity level of 64%, resulting in comfortable conditions for outdoor activities. For a detailed look at the weather specifics, you can check Andorra weather in May.

In September, temperatures range from a low of 6°C (43°F) to a high of 34°C (94°F), with an average of around 20°C (69°F). The month experiences 38 mm (1.5 in) of precipitation over approximately six days, coupled with a humidity level of 64%. In contrast, June features slightly warmer average temperatures, ranging from 6°C (43°F) to a scorching maximum of 41°C (105°F), with an average of 22°C (72°F). Rainfall in June is a bit higher, totaling 49 mm (1.9 in) over seven days, and the humidity is relatively lower at 59%. For more details on June weather, check out Andorra weather in June.

When comparing the weather in September to that of July, notable differences emerge in temperature and precipitation patterns. In September, the minimum temperature drops to 6°C (43°F), while the average temperature is around 20°C (69°F), peaking at 34°C (94°F). This month experiences slightly higher precipitation at 38 mm (1.5 in) over 6 days, coupled with a humidity level of 64%.

In contrast, July is warmer overall, with a minimum temperature of 11°C (52°F) and an average of 25°C (78°F), reaching maximum highs of 40°C (104°F). Precipitation is lower in July, recorded at 23 mm (0.9 in) over the same number of days, and humidity is comparatively lower at 58%. For more details on July weather specifically, you can check out Andorra weather in July.

In comparing the weather of September and August, we see a notable transition in temperatures. September features a minimum of 6°C (43°F) and an average of 20°C (69°F), which is significantly cooler than August's minimum of 11°C (52°F) and average of 25°C (77°F). August also boasts a higher maximum temperature of 40°C (104°F) compared to September's maximum of 34°C (94°F). Precipitation levels suggest a wetter September with 38 mm (1.5 in) over 6 days, as opposed to August's 22 mm (0.9 in) over 7 days. Additionally, September has a higher humidity level at 64%, compared to August's 58%. For a more detailed look at August weather, you can visit Andorra weather in August.

September and October showcase a notable transition in weather patterns. In September, temperatures typically range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average of 20°C (69°F). The month experiences 38 mm (1.5 in) of precipitation over about six days, while humidity sits at 64%. In contrast, October sees cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 30°C (86°F), resulting in a lower average of 16°C (61°F). Precipitation slightly decreases to 36 mm (1.4 in), occurring over four days, and humidity rises to 76%. This shift marks the onset of autumn, bringing crisper air and a more pronounced sense of seasonal change. For more information, you can check out Andorra weather in October.

In September, the weather is typically warmer with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), boasting an average of 20°C (69°F). The month experiences relatively low precipitation, with around 38 mm (1.5 in) spread over 6 days, and a humidity level of 64%. In contrast, November brings much cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 25°C (78°F), averaging 10°C (50°F). Precipitation increases to 64 mm (2.5 in) over approximately 9 days, and the humidity rises significantly to 82%. For more detailed information, you can visit Andorra weather in November.

In September, the weather is generally warm with average temperatures reaching up to 20°C (68°F) and a maximum of 34°C (94°F), while the minimum temperature rests at a mild 6°C (43°F). This month experiences a moderate amount of precipitation, totaling 38 mm (1.5 in) over approximately 6 days, accompanied by a relative humidity of 64%. In contrast, December brings cooler temperatures, with averages dropping to 8°C (47°F) and a maximum of only 20°C (68°F). The month can see minimum temperatures plummeting to -4°C (25°F), alongside a slight decrease in total precipitation to 30 mm (1.2 in) over about 5 days, but humidity levels rise significantly to 84%. For more detailed information on winter conditions, check Andorra weather in December.

Compare Andorra's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Andorra

In September, Andorra experiences a delightful transition as summer wanes, offering a unique blend of warmth and coolness not found in the peak summer months. With average temperatures hovering around a comfortable 20°C (69°F), visitors can enjoy pleasant days, contrasted by the refreshing chill of cooler evenings. The humidity at 64% adds a touch of crispness to the air, enhancing the scenic beauty of the landscapes. Though there are occasional light showers, with only about 38 mm (1.5 in) of precipitation over 6 days, the weather remains generally favorable for outdoor activities. This distinctive climate makes September an ideal time to explore Andorra’s stunning surroundings. For more insights into Andorra's weather patterns throughout the year, check out the detailed Andorra Climate page.