September Weather in Porto Covo, Portugal

Last updated: February 24, 2025

Experience the vibrant September weather of Porto Covo, Portugal, where temperatures range from a maximum of 33°C (92°F) to a comfortable average of 21°C (70°F), dipping to a refreshing minimum of 12°C (54°F) during the cooler nights. With only 11 mm (0.4 in) of rainfall over just 2 days, this coastal gem basks in sunshine, making it ideal for outdoor adventures. The humidity floats around 71%, adding a touch of Mediterranean charm to sunny days by the sea. Embrace the warmth and beauty of Porto Covo this September!

September Temperature in Porto Covo

In September, Porto Covo enjoys a delightful transition from the summer heat, with temperatures ranging from a mild 12°C (54°F) at night to a pleasant 33°C (92°F) during the day. The average temperature settles comfortably at 21°C (70°F), making it an ideal time for outdoor activities and beach outings. This month marks a slight dip from the intense highs of August, yet still presents plenty of warm sunshine. As autumn approaches, visitors can relish the balmy days while taking in the stunning coastal scenery, perfect for exploring the area before the cooler months set in. Overall, September encapsulates a beautiful blend of warmth and comfort, paving the way for the fall season.

September Weather in Porto Covo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Porto Covo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525557596567707170665955
Data source: Temperature data for Porto Covo 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.

September Precipitation in Porto Covo

In September, Porto Covo experiences a gentle transition as summer gives way to autumn, marked by an average precipitation of 11 mm (0.4 in) over just 2 days of rainfall. This slight uptick in moisture contrasts sharply with the arid conditions of the preceding months, where July and August recorded barely a trace of rain. It's a herald of the upcoming wetter months, as October typically sees a more substantial increase in rainfall. September's modest precipitation allows for mild, pleasant days, making it a favorable time for visitors to enjoy the scenic beauty of this coastal town before the heavier rains set in.

September Precipitation Trends in Porto Covo

The chart displays monthly precipitation patterns in Porto Covo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2954836623103211455851
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porto Covo

September in Porto Covo, Portugal, sees a slight uptick in humidity, registering at 71%. This marks a gentle rise from the summer’s drier months of June (67%) and July (69%), reflecting the gradual transition into autumn. While August remains relatively stable at 68%, September's figure signals the region's shift towards the wetter conditions that typically characterize the fall season. As the year progresses, humidity steadily increases, culminating in the winter months, where levels peak at 81% in December. This trend highlights how Porto Covo experiences a comfortable blend of summer warmth and the refreshing embrace of early autumn humidity, making September a delightful time to explore this picturesque coastal town.

September Average Humidity in Porto Covo

This chart illustrates the average monthly humidity levels in Porto Covo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec80%74%71%69%69%67%69%68%71%75%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Porto Covo

In September, Porto Covo experiences a UV Index of 9, categorized as very high, which means sun exposure can lead to skin damage in just 15 minutes. This trend marks a slight decrease from the peak summer months of June to August, where the index reached an extreme level of 11. As autumn approaches, the intensity of the sunlight begins to diminish; however, safety precautions are still essential, as a UV Index of 9 requires vigilance. Visitors and locals alike should take care during outdoor activities and consider protective measures. For more detailed information on UV levels throughout the year, check out the Porto Covo UV Index.

Maximum UV Index Levels in Porto Covo for September

The chart shows the monthly maximum UV Index (UVI) for Porto Covo 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.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110109743
Data source: Porto Covo 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 Porto Covo

As summer gracefully transitions into autumn, September in Porto Covo, Portugal offers a spectacular blend of warm sunshine and fading heat. With 350 hours of sunshine, it marks a slight decline from the sun-drenched days of July and August, yet remains brighter than many other months. The trend showcases a gradual diminishing daylight as the year progresses, with May and June basking in their peak glow, boasting over 400 hours each. Despite this slight reduction in sunshine, September invites visitors to enjoy the lingering warmth while embracing the charming tranquility of the region before the cooler months set in. Whether you're exploring coastal trails or savoring local cuisine, the sunlight in Porto Covo adds a golden touch to your September adventures.

Monthly Sunshine Duration in Porto Covo: September Highlighted

The September sunshine duration represents the total number of hours Porto Covo 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.
JanFebMarAprMayJunJulAugSepOctNovDec190h235h303h355h406h409h420h394h350h319h236h231h
Data source: Porto Covo September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porto Covo During September

September in Porto Covo, Portugal, offers a delightful transition into autumn, maintaining a promising 66% chance of sunny weather. Following the peak summer months of July and August, which boast sun chances of 80% and 79% respectively, September continues the trend of favorable conditions, although slightly diminishing. This month strikes a beautiful balance, as the warmth of late summer lingers, making it an ideal time for outdoor activities. With clearer skies more common than in the winter months, visitors can still enjoy the vibrant landscapes and charming coastline, while experiencing the gradual shift to the mellower autumn season.

Percentage of Sunny Days in September in Porto Covo

The chart illustrates the percentage of sunny days in Porto Covo 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 Porto Covo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec44%23%60%39%62%75%80%79%66%56%70%45%
Data source: Porto Covo September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porto Covo in September

As summer fades into autumn in Porto Covo, Portugal, September marks a gentle transition in daylight hours, offering about 12 hours of light per day. This shift signifies a gradual decline from the peak of 14 hours enjoyed during the sun-drenched months of May through August. While September still benefits from a notable amount of sunlight, it's evident that as the days shorten, a sense of change fills the air, heralding the arrival of cooler temperatures and the rich hues of fall. The diminishing daylight serves as a reminder of the cyclical nature of the seasons, paving the way for the cozy ambiance that October and November will bring.

Average Daylight Hours in Porto Covo for September

The chart illustrates the variation in daylight duration in Porto Covo throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 52m10h 47m11h 58m13h 11m14h 12m14h 42m14h 26m13h 32m12h 22m11h 10m10h 7m9h 35m
Data source: Porto Covo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Porto Covo

In September, the wind in Porto Covo tends to mellow, with an average speed of 3.9 m/s (9 mph). This marks a slight dip compared to the summer months of July and August, when winds peaked at 5.0 m/s (11 mph) and 4.4 m/s (10 mph), respectively. As summer transitions to autumn, the coastal breeze softens, creating a more tranquil atmosphere that's perfect for leisurely beach walks and scenic vistas. Interestingly, September's winds are similar to those of the preceding March, suggesting a gentle consistency as the seasons change. As the year progresses into October, the winds are forecasted to decrease slightly further, hinting at the calm, inviting conditions that characterize the autumn in this charming Portuguese seaside town.

Average September Wind Speed in Porto Covo

The chart displays monthly wind speed patterns in Porto Covo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.63.93.44.94.65.04.43.9 m/s3.73.84.4
Data source: Porto Covo September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Porto Covo Compares to Other Months

The weather in Porto Covo 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 Porto Covo and find detailed weather information for every month.

September and January present quite contrasting weather characteristics. In September, temperatures range from a mild 12°C (54°F) at the minimum to a warm 33°C (92°F) at the maximum, with an average of 21°C (70°F). The month typically sees low precipitation of only 11 mm over 2 days, accompanied by moderate humidity levels of 71%. In stark contrast, January features cooler temperatures with a minimum of 1°C (34°F) and an average of 11°C (52°F), peaking at 22°C (71°F). This month experiences higher precipitation at 29 mm over 4 days and humidity levels of 80%. For more details on January weather, you can check out Porto Covo weather in January.

Comparing the weather in September and February reveals distinct differences in temperature and precipitation patterns. September enjoys warmer temperatures, with a minimum of 12°C (54°F) and an average of 21°C (70°F), peaking at a high of 33°C (92°F). In contrast, February is significantly cooler, with a minimum of 3°C (38°F) and an average of 13°C (55°F), reaching a maximum of 23°C (74°F). Additionally, September experiences very little rainfall, averaging only 11 mm (0.4 in) over 2 days, while February sees a marked increase in precipitation, totaling 54 mm (2.1 in) across 6 days. Humidity levels are quite similar in both months, averaging around 71% in September and 73% in February. For a more detailed look at February weather in this region, you can visit Porto Covo weather in February.

September and March present contrasting weather patterns. In September, temperatures range from a mild 12°C (54°F) at night to a warm 33°C (92°F) during the day, with an average temperature of 21°C (70°F). Precipitation is minimal, with only 11 mm (0.4 in) over just 2 days, creating a relatively dry atmosphere with a humidity level of 71%. In contrast, March is much cooler, with minimum temperatures dropping to 6°C (43°F), averaging 14°C (57°F), and reaching a maximum of 27°C (80°F). The month is significantly wetter, with 83 mm (3.3 in) of rainfall occurring over 9 days, while the humidity remains constant at 71%. For more details on the weather in this month, visit Porto Covo weather in March.

When comparing the weather in September and April, notable differences emerge. September tends to be warmer overall, with average temperatures reaching 21°C (70°F), peaking at 33°C (92°F), while April is cooler, with an average of 15°C (60°F) and a maximum of 28°C (82°F). Precipitation is also significantly higher in April, with 66 mm (2.6 in) falling over 11 days compared to just 11 mm (0.4 in) over 2 days in September. Humidity levels are quite similar, averaging around 71% in September and 69% in April. For more details about the specific weather conditions in April, check out Porto Covo weather in April.

September generally brings warmer temperatures compared to May, with average highs reaching 21°C (70°F) and maximum temperatures peaking at 33°C (92°F). In contrast, May tends to be cooler, maintaining an average temperature of 18°C (65°F) and maxing out at 32°C (90°F). Precipitation is less frequent in September, with only 11 mm (0.4 in) expected over 2 days, while May sees more rainfall at 23 mm (0.9 in) across 4 days. Humidity levels are similar, hovering around 71% in September and 69% in May. For more detailed insights, check out Porto Covo weather in May.

When comparing the weather in September and June, there are a few notable differences. September tends to be slightly warmer on average, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), whereas June has an average temperature of 19°C (67°F) with a smaller range, from 11°C (52°F) to 37°C (98°F). Precipitation levels are quite similar, with September receiving 11 mm (0.4 in) over 2 days and June getting 10 mm (0.4 in) over 3 days. Humidity levels are also a bit higher in September at 71%, compared to June's 67%. For more detailed insights into the weather during this month, you can check Porto Covo weather in June.

In comparing the weather of September and July, both months showcase a similar average temperature of 21°C (70°F), but July tends to be slightly warmer, with maximum temperatures reaching 36°C (96°F), compared to September's 33°C (92°F). July experiences virtually no precipitation, recording only 3 mm (0.1 in) over no days, while September sees a bit more moisture with 11 mm (0.4 in) over two days. Humidity levels are fairly comparable, with September at 71% and July slightly lower at 69%. For more details on July weather specifics, you can check out this link: Porto Covo weather in July.

In September, the weather begins to show a slight cooling trend, with minimum temperatures dropping to 12°C (54°F) compared to August's minimum of 15°C (58°F). The average temperature in September is 21°C (70°F), while August sees a slightly warmer average of 22°C (71°F). The maximum temperature in September reaches 33°C (92°F), which is a notable decrease from August's peak of 39°C (103°F). Additionally, September experiences a bit more precipitation, with 11 mm (0.4 in) over 2 days, whereas August enjoys drier conditions with only 2 mm (0.1 in) and no rainy days. Humidity levels are slightly higher in September at 71%, compared to 68% in August. For more detailed weather insights, you can check Porto Covo weather in August.

September and October display notable differences in weather patterns. September tends to be warmer, with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 33°C (92°F) and an average of 21°C (70°F). In contrast, October sees a slight drop in temperatures, with minima of 9°C (49°F) and maxima reaching 32°C (90°F), averaging 19°C (66°F). Additionally, October experiences significantly higher precipitation, with 45 mm (1.8 in) over four days, compared to just 11 mm (0.4 in) over two days in September. The humidity also rises slightly in October to 75%, making the air feel a bit heavier. For more specific insights, you can check Porto Covo weather in October.

When comparing the weather in September and November, there are notable differences in temperature and precipitation. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 33°C (92°F), with an average of 21°C (70°F). The month typically sees only 11 mm (0.4 in) of precipitation over just 2 days, coupled with a humidity level of 71%. In contrast, November experiences cooler conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (76°F), averaging 15°C (59°F). This month also witnesses a significant increase in rainfall, totaling 58 mm (2.3 in) over 9 days, and slightly higher humidity at 78%. For more detailed information, check out Porto Covo weather in November.

September and December present contrasting weather patterns, reflecting the transition from late summer to winter. In September, temperatures range from a mild 12°C (54°F) at night to a warm 33°C (92°F) during the day, with an average of 21°C (70°F). The month is relatively dry, receiving only 11 mm (0.4 in) of precipitation over just 2 days and maintaining a humidity level of 71%. In stark contrast, December features much cooler temperatures, with a minimum of 3°C (38°F), average of 13°C (55°F), and a maximum of 20°C (69°F). This month is wetter, accumulating 51 mm (2.0 in) of precipitation over 9 days and experiencing a higher humidity level of 81%. To learn more about the weather specifics in this coastal town during December, you can visit Porto Covo weather in December.

Compare Porto Covo's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Porto Covo

As summer transitions into autumn, September in Porto Covo offers a delightful blend of warmth and mildness, setting it apart from the more intense heat of July and August. With average temperatures hovering around a comfortable 21°C, the month is marked by lower humidity levels and minimal rainfall, ensuring sunny days that invite outdoor exploration. This is a perfect time to enjoy Porto Covo's stunning coastlines and vibrant scenery, all while avoiding the bustling peak tourist season. For a deeper understanding of how the weather shapes life in this beautiful region, check out the detailed insights available at Porto Covo Climate.