Last updated: February 24, 2025
In September, Alcobaça, Portugal, showcases a delightful mix of warmth and refreshing breezes, with maximum temperatures reaching up to 34°C (94°F). The average temperature settles comfortably at 20°C (68°F), providing a pleasant atmosphere for outdoor activities. Nighttime brings cooler air, dropping to a minimum of 12°C (54°F). While this month witnesses a modest precipitation total of 30 mm (1.2 in) over just three days, humidity levels hover around 67%, adding a hint of tropical charm to the region. Whether you're exploring historic sites or relaxing in nature, September in Alcobaça is an inviting time of year.
In September, Alcobaca, Portugal experiences a pleasant transition from summer heat to the mildness of autumn. With minimum temperatures around 12°C (54°F) and maximums peaking at 34°C (94°F), the month offers an average of 20°C (68°F), making it an ideal time for outdoor activities. The warmth is still reminiscent of the summer's high, particularly as it follows the scorching August highs. However, as September progresses, the coolness of early mornings hints at the upcoming fall season, showcasing a beautiful blend of lingering summer warmth and the refreshing breeze of autumn. This gentle shift in temperatures makes Alcobaca particularly inviting for visitors looking to enjoy the vibrant landscapes and cultural richness without the peak summer crowds.
In September, Alcobaça experiences a seasonal transition, marked by a precipitation total of 30 mm (1.2 in) over three days. This uptick in rainfall follows the drier summer months of July and August, with their minimal amounts of just 10 mm and 7 mm, respectively. As the landscape shifts from the parched heat of summer to the cooler embrace of autumn, September's precipitation indicates a return toward wetter conditions, setting the stage for the more substantial rainfalls that come in October and November. This pattern suggests a gradual transition from warm, dry days to the dampness that characterizes the later months of the year, making September an essential bridge in Alcobaça's climatological rhythm.
In September, Alcobaca experiences a moderate humidity level of 67%, signaling a gradual transition toward the more humid autumn months. Following the drier summer months of July and August, which both recorded 60% humidity, September brings a slight uptick as the lingering warmth of summer begins to wane. This shift is part of a broader trend observed throughout the year, where humidity levels peak in the winter months, reaching 85% in both January and December, before tapering off during the summer. Overall, September's humidity reflects a return to a more balanced climate, setting the stage for the humidity to rise again as autumn unfolds.
In September, Alcobaca experiences a UV Index of 8, categorizing it under the very high exposure level, with a burn time of just 15 minutes. This trend marks a slight decrease from the peak summer months, where June reached an extreme index of 11. However, the UV levels remain significant, compelling residents and visitors to take proper sun protection measures. As the season transitions into fall, maintaining awareness of the sun's intensity is crucial. For more detailed insights, check out the full guide on the Alcobaca UV Index.
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As the summer sun begins to wane, September in Alcobaça, Portugal, offers a delightful blend of warmth and light, with 347 hours of sunshine illuminating the charming landscapes. Although this marks a gentle decline from the sun-drenched 418 hours of July, it still provides an inviting atmosphere for visitors and locals alike. The month transitions from the peak summer radiance of August, with 393 hours of sunshine, into the cooler embrace of autumn, while maintaining a significant amount of daylight compared to the earlier months of the year. This steady flow of sunlight throughout the late summer months not only enhances outdoor activities but also sets a picturesque backdrop for exploring Alcobaça's rich history and stunning natural beauty. As daylight diminishes in October to 310 hours, September stands out as a beautiful bridge between the vibrant summer and the tranquil fall, inviting all to bask in its glow.
In Alcobaça, Portugal, September typically offers a delightful mix of sunshine, boasting a 53% chance of clear skies. This month stands out as a transitional period as summer begins to give way to autumn, with sunshine probabilities slightly lower than the peak of August (66%) but significantly higher than spring months like April (32%). As the year progresses, September maintains a favorable likelihood of sun compared to many other months, ensuring that visitors and locals alike can still relish the warmth and light before the cooler days set in. Notably, the chance of sunny days in September aligns closely with the broader trends seen from May (48%) through October (51%), reinforcing the notion that this period is an excellent time for outdoor activities amidst the gentle change of seasons.
As September arrives in Alcobaça, Portugal, the daylight duration begins to transition from the long, sun-soaked days of summer. With approximately 12 hours of daylight, September marks a slight decrease following the peak summer months of June through August, which boast 14 hours each. This gradual decline signals the approach of autumn, where daylight hours ebb further, dipping to 11 hours in October. Overall, the trends reflect the rhythm of the seasons, as daylight begins to shift from the vibrant abundance of summer toward the quieter, cozier days of fall, inviting both reflection and respite.
In September, Alcobaca experiences a gentle breeze with an average wind speed of 3.9 m/s (9 mph), marking a slight decline from the balmy gusts of summer. This month tends to bring a transition from the warmer winds of July and August, both averaging around 5.1 m/s (11 mph), to the calmer conditions that herald the arrival of autumn. As the year progresses, wind speeds generally decrease, with October following closely at 3.4 m/s (8 mph). The overall trend suggests that while September's winds are still pleasant, they're beginning to taper off, inviting the cooler, crisp air of the coming months. This shift not only enhances the picturesque landscape but also signals a shift in the seasonal vibe of this enchanting region of Portugal.
The weather in Alcobaca 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 Alcobaca and find detailed weather information for every month.
September and January offer contrasting weather experiences. In September, temperatures range from a mild 12°C (54°F) at night to a warm 34°C (94°F) during the day, with an average of 20°C (68°F). The month sees relatively low precipitation, with only 30 mm (1.2 in) over about 3 days and humidity at 67%. In stark contrast, January brings cooler temperatures, with minimums dropping to 1°C (33°F) and an average of just 11°C (51°F), peaking at 20°C (68°F). This month is wetter, receiving 50 mm (2.0 in) of rain spread over 7 days, accompanied by higher humidity levels at 85%. For more detailed information, you can check Alcobaca weather in January.
September and February present a notable contrast in weather conditions. In September, temperatures are typically warmer, ranging from a minimum of 12°C (54°F) to a maximum of 34°C (94°F), with an average of 20°C (68°F). The month experiences relatively low precipitation at 30 mm (1.2 in) over just 3 days, and humidity averages around 67%. In contrast, February features cooler temperatures, with minimums dropping to 3°C (37°F) and maximums reaching 23°C (74°F), resulting in an average temperature of 12°C (54°F). This month sees higher precipitation, totaling 58 mm (2.3 in) over 8 days, and humidity levels rise to 75%. For more specific details, you can check Alcobaca weather in February.
In comparing the weather between September and March, we see distinct differences in temperature and precipitation. September typically enjoys warmer temperatures, with average highs reaching 34°C (94°F) and an average of 20°C (68°F), while March sees cooler conditions, with an average high of only 27°C (81°F) and an average of 13°C (56°F). Precipitation also varies significantly; September experiences relatively light rainfall of 30 mm (1.2 in) over just 3 days, contrasted by March's increased rainfall of 87 mm (3.4 in) spread across 9 days. Additionally, humidity levels are slightly higher in March at 72%, compared to September's 67%. For a more detailed look at weather conditions in March, you can visit Alcobaca weather in March.
In comparing the weather between September and April, September boasts generally warmer temperatures, with an average of 20°C (68°F) and highs reaching up to 34°C (94°F), while April's average temperature is cooler at 14°C (58°F) with maximums of 29°C (84°F). Precipitation is notably lower in September, with only 30 mm (1.2 in) over just 3 days compared to April's significantly higher 95 mm (3.7 in) spread across 13 rainy days. While both months have similar humidity levels, September tends to be slightly less humid at 67% compared to April's 70%. This variation illustrates a clear transition from summer warmth in September to the wetter, cooler conditions typical of April, as detailed further in Alcobaca weather in April.
In comparing the weather of September and May, September tends to be warmer overall, with average temperatures reaching 20°C (68°F) compared to May's 17°C (63°F). Both months experience the same maximum temperature of 34°C (94°F), but September boasts a milder minimum of 12°C (54°F), while May has a cooler minimum of 8°C (47°F). Precipitation levels are notably different; September sees 30 mm of rain over just 3 days, whereas May has a higher total of 47 mm over 7 days, resulting in slightly more humid conditions in May at 70% compared to September's 67%. For more detailed insights, check out Alcobaca weather in May.
When comparing the weather in September and June, September tends to be warmer overall, with average temperatures reaching 20°C (68°F) compared to June's 18°C (65°F). However, June boasts a slightly higher maximum temperature at 35°C (95°F) despite experiencing more days of precipitation, with rain occurring on 7 days compared to just 3 days in September. Additionally, humidity levels are relatively similar, with September being slightly more humid at 67% compared to June's 63%. For a more detailed look at June weather, you can visit Alcobaca weather in June.
In comparing the weather of September to July, we see some noteworthy differences. September typically features slightly cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 34°C (94°F), compared to July's minimum of 13°C (57°F) and maximum of 36°C (97°F). Additionally, September tends to be wetter, with precipitation of 30 mm (1.2 in) over three days, while July has only 10 mm (0.4 in) of rain in the same timeframe. Humidity is also higher in September at 67%, compared to July's 60%. For further details, you can check Alcobaca weather in July.
In comparing the weather patterns of September and August, it is clear that September experiences slightly cooler temperatures, with a minimum of 12°C (54°F) and a maximum of 34°C (94°F), while August showcases warmer weather with a minimum of 14°C (57°F) and a peak of 38°C (101°F). The average temperatures remain similar in both months, settling around 20°C (68°F) to 20°C (69°F). Additionally, September has more precipitation, totaling 30 mm (1.2 in) over three days, compared to the minimal rainfall of just 7 mm (0.3 in) on one day in August. Humidity levels are higher in September at 67%, compared to 60% in August, indicating a noticeable difference in comfort level between the two months. For more detailed insights, you can check Alcobaca weather in August.
September and October exhibit notable differences in weather patterns. In September, temperatures range from a mild minimum of 12°C (54°F) to a maximum of 34°C (94°F), with an average of 20°C (68°F). The month experiences less precipitation, totaling 30 mm (1.2 in) over just 3 days and maintaining a humidity level of 67%. In contrast, October sees cooler temperatures, with a minimum of 7°C (46°F) and an average of 18°C (64°F), while still reaching a maximum of 35°C (95°F). However, it marks a wetter month, with 72 mm (2.8 in) of rainfall spread over 7 days and slightly higher humidity at 74%. For more detailed insights on the weather during October, you can visit Alcobaca weather in October.
September experiences warmer temperatures, with a minimum of 12°C (54°F) and an average of 20°C (68°F), reaching up to a maximum of 34°C (94°F). It typically sees lower precipitation levels, averaging just 30 mm (1.2 in) over about 3 days, and humidity around 67%. In contrast, November brings cooler conditions, with temperatures dropping to a minimum of 7°C (45°F) and an average of 14°C (57°F), peaking at 25°C (76°F). The month is wetter, with precipitation totaling 97 mm (3.8 in) spread over 13 days, and humidity rises to 83%. For more detailed weather insights, check Alcobaca weather in November.
September typically features much warmer temperatures, with daily highs reaching up to 34°C (94°F) and an average of 20°C (68°F). The month experiences relatively low precipitation, totaling just 30 mm (1.2 in) over three days, coupled with a humidity level of 67%. In contrast, December brings cooler temperatures, with a maximum of 19°C (66°F) and an average of 12°C (54°F). This month is also wetter, receiving 74 mm (2.9 in) of rain over 10 days, and the humidity is higher at 85%. For more detailed information on December weather specifically, you can check Alcobaca weather in December.
As September unfolds in Alcobaca, visitors can expect a delightful transition from the sweltering summer heat, with daytime temperatures reaching their peak while the nights cool down, offering a refreshing respite. The month is characterized by relatively low precipitation, making it a great time to enjoy outdoor activities with just a few occasional showers. With humidity levels stabilizing, the air feels comfortable, allowing for pleasant exploration of the city's stunning landscapes and rich history. For a detailed look at the overall climate patterns throughout the year, visit Alcobaca Climate.