September Weather in Porches, Portugal

Last updated: February 24, 2025

In September, Porches, Portugal experiences a delightful blend of warm weather and occasional rain, making it an ideal time to visit. The maximum temperature can soar up to 37°C (98°F), while the average remains a comfortable 22°C (73°F). With a minimum of 11°C (52°F), the evenings offer a refreshing coolness. Precipitation is light, totaling just 8 mm (0.3 in) over the month, occurring on only 1 day, allowing for plenty of sunshine. The humidity averages around 71%, providing a pleasant, tropical feel without being overwhelming. Overall, September in Porches is a perfect blend of summer warmth and mild conditions, ideal for outdoor adventures and relaxation by the coast.

September Temperature in Porches

As summer transitions to autumn, September in Porches, Portugal presents a delightful blend of warmth and moderate temperatures. With a minimum of 11°C (52°F) and a comfortable average of 22°C (73°F), this month offers the perfect conditions for outdoor exploration. The maximum temperature can soar to 37°C (98°F), echoing the tail end of the hot summer months, but the evenings start to embrace a more refreshing chill. This gradual cooling trend sets the stage for a cozy atmosphere, making September an ideal time to enjoy the stunning coastal views and vibrant landscapes that Portugal has to offer before the cooler months roll in.

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

The chart illustrates September temperature patterns in Porches, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec505456596669737572665854
Data source: Temperature data for Porches 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 Porches

In September, Porches, Portugal experiences a notable shift in its climatic backdrop as the summer warmth begins to wane. The month brings a modest precipitation amount of 8 mm (0.3 in), occurring over just one day, which indicates a smooth transition from the dry spell of summer where August recorded a mere 1 mm of rain. This slight uptick in rainfall marks the onset of the autumn season, hinting at the wetter months ahead. Comparatively, September's rainfall is a welcome change following the arid July and August, setting the stage for the more substantial precipitation of October and beyond. Overall, September serves as a gentle reminder of nature's cyclical rhythm, gradually leading Porches into a season of increased moisture after an unusually dry summer.

September Precipitation Trends in Porches

The chart displays monthly precipitation patterns in Porches, 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.
JanFebMarAprMayJunJulAugSepOctNovDec24447865238318325045
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Porches

In September, Porches, Portugal experiences a moderate humidity level of 71%, marking a slight uptick from the summer months of June (67%) and August (68%). This seasonal shift suggests a transition as the region moves toward autumn. Interestingly, while humidity remains relatively stable, it seems to align with the overall trend of increasing moisture that begins in late summer and culminates in the wetter months of fall and winter. Notably, October sees a rise to 75%, followed by November and December, where humidity levels climb further to 78% and 81% respectively. This pattern indicates that while September maintains a comfortable humidity, it heralds the coming of a more humid season ahead, enhancing the lushness of the Algarve landscape.

September Average Humidity in Porches

This chart illustrates the average monthly humidity levels in Porches, 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 Porches

In September, Porches, Portugal experiences a UV Index of 9, placing it in the very high exposure category. This means sunbathers and outdoor enthusiasts need to be particularly cautious, as the recommended burn time is a mere 15 minutes. Following the peak summer months where UV levels reached their highest at 11, September sees a slight decrease, but the intensity remains significant. As the year transitions into fall, it's essential to continue practicing sun safety. For those planning outdoor activities, awareness of the UV index is key to enjoying the sunny Portuguese climate safely. For more insights on UV levels throughout the year, visit Porches UV Index.

Maximum UV Index Levels in Porches for September

The chart shows the monthly maximum UV Index (UVI) for Porches 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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: Porches 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 Porches

September in Porches, Portugal, offers a delightful transition from the peak of summer into the gentle embrace of autumn, with 351 hours of sunshine gracing the month. After enjoying the sun-drenched days of July and August, where the sun shines a brilliant 425 and 397 hours respectively, September's warmth remains inviting yet less intense, perfect for outdoor adventures. As fall approaches, the daylight hours begin to wane, and while the sun still generously lights up the sky, the decrease in hours signals a slowing down of the vibrant summer energy. This makes September an ideal time to savor the stunning landscapes, explore the local culture, and relish the lingering warmth before the cooler months arrive.

Monthly Sunshine Duration in Porches: September Highlighted

The September sunshine duration represents the total number of hours Porches 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.
JanFebMarAprMayJunJulAugSepOctNovDec202h248h308h359h410h412h425h397h351h323h249h244h
Data source: Porches September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Porches During September

As summer transitions into autumn, September in Porches, Portugal retains a respectable 65% chance of sunny weather, making it a delightful time for those seeking warmth and light. This percentage holds steady compared to the preceding months, reflecting a gradual decline from the peak of 87% in July and 84% in August. Despite this slight downturn, September still ranks favorably within the year, comfortably above the spring months, which exhibit lower sun probabilities. Visitors can expect a pleasantly sunny climate, perfect for enjoying the stunning Algarve coastline before the cooler October weather rolls in.

Percentage of Sunny Days in September in Porches

The chart illustrates the percentage of sunny days in Porches 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 Porches experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec44%23%59%38%65%76%87%84%65%58%72%44%
Data source: Porches September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Porches in September

As September unfolds in Porches, Portugal, daylight begins to wane, with the sun gracing the skies for approximately 12 hours each day. This shift marks a gentle transition from the longer, sun-soaked days of summer, which peaked at 14 hours in June and July. The month embodies the essence of shifting seasons, as daylight gradually diminishes from the vibrant 13 hours of August, ushering in the crisper air and changing leaves of autumn. Observing this trend, it becomes clear that as the year progresses, daylight hours steadily decrease from their summer heights, creating an inviting atmosphere for leisurely walks and cozy gatherings as the landscape transforms into a palette of warm hues.

Average Daylight Hours in Porches for September

The chart illustrates the variation in daylight duration in Porches throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 55m10h 49m11h 58m13h 9m14h 9m14h 39m14h 23m13h 30m12h 22m11h 11m10h 9m9h 38m
Data source: Porches daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Porches

As summer transitions into autumn, September in Porches, Portugal experiences a gentle cooling breeze, with average wind speeds dipping to 3.2 m/s (7 mph). This is a slight decrease compared to the warmer months, reflecting the end of the peak tourist season while still maintaining a pleasant coastal atmosphere. Interestingly, the wind patterns reveal a trend of fluctuating speeds; the summer months of July and August showcase the highest average gusts, peaking at 4.3 m/s (10 mph) and 3.7 m/s (8 mph) respectively. However, as the year progresses into the autumn months of October and November, the wind speeds stabilize further at 3.2 m/s (7 mph), creating a calm and serene backdrop for those seeking the tranquil beauty of Porches during this picturesque time of year.

Average September Wind Speed in Porches

The chart displays monthly wind speed patterns in Porches, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.93.43.24.13.94.33.73.2 m/s3.23.34.1
Data source: Porches September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Porches Compares to Other Months

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

September and January present contrasting weather patterns. In September, temperatures are generally milder with a minimum of 11°C (52°F), averaging 22°C (73°F), and can peak at a scorching 37°C (98°F). The month is relatively dry, receiving only 8 mm (0.3 in) of precipitation over just 1 day, with humidity levels around 71%. In stark contrast, January sees the mercury drop significantly, with a minimum of -2°C (29°F) and an average temperature of 10°C (51°F), peaking at 21°C (70°F). This winter month is wetter, experiencing 24 mm (0.9 in) of precipitation over 3 days, coupled with a higher humidity level of 80%. For a more detailed look at January weather, check out Porches weather in January.

September and February present contrasting weather conditions. In September, temperatures can soar as high as 37°C (98°F) with an average of 22°C (73°F), while February experiences cooler temperatures, reaching a maximum of only 24°C (76°F) and an average of 12°C (55°F). Precipitation is significantly lower in September, with just 8 mm (0.3 in) over about one rainy day, compared to February's 44 mm (1.7 in) spread over five days of rainfall. Humidity remains relatively similar in both months, around 71% in September and 73% in February, indicating that while temperatures drop in February, the air remains consistently moist. For a more detailed look at February weather specifics, check out Porches weather in February.

In September, the weather is typically warm and dry, with average temperatures around 22°C (73°F) and maximums reaching up to 37°C (98°F). Rain is minimal, averaging only 8 mm (0.3 in) over just one day, making it a great time for outdoor activities. In contrast, March brings cooler temperatures, with an average of 14°C (57°F) and maximums of 27°C (81°F). This month experiences significantly more precipitation, with 78 mm (3.1 in) spread over nine rainy days. Humidity levels remain consistent at 71% for both months, but the overall feel and conditions differ greatly. For a closer look at what to expect, check Porches weather in March.

September weather tends to be warmer, with average temperatures reaching 22°C (73°F) and maximum highs of up to 37°C (98°F). The month experiences relatively low precipitation, with only about 8 mm (0.3 in) and just one rainy day, combined with a higher humidity level of 71%. In contrast, April is cooler, with average temperatures around 15°C (60°F) and maximums peaking at 29°C (84°F). This month sees significantly more rainfall, totaling 65 mm (2.5 in) over approximately 11 days, while humidity is slightly lower at 69%. For more specific details about the weather patterns, you can check Porches weather in April.

In September, the weather tends to be warmer than in May, with average temperatures reaching 22°C (73°F) compared to May's 19°C (66°F). The maximum temperatures can soar up to 37°C (98°F) in September, whereas May's peak is more moderate at 34°C (93°F). Additionally, September experiences significantly less precipitation, with only 8 mm (0.3 in) of rain over just one day, compared to May's 23 mm (0.9 in) of rain over four days. Humidity levels are slightly higher in September at 71%, compared to May's 69%. For more detailed insights on the weather in May, you can check this Porches weather in May.

In September, the weather is characterized by slightly warmer averages, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 37°C (98°F) and an average of 22°C (73°F). This month sees a modest amount of precipitation, about 8 mm (0.3 in), falling on just one day, while humidity levels hover around 71%. In contrast, June experiences similar minimum temperatures of 11°C (52°F) but can reach slightly higher maximums of 40°C (105°F), with an average of 21°C (69°F). It also records the same amount of precipitation, 8 mm (0.3 in), but spread over three days, resulting in slightly lower humidity at 67%. For a closer look at the specifics of June weather, you can visit Porches weather in June.

In comparing the weather of September and July, September typically showcases a slightly cooler climate, with average temperatures of 22°C (73°F), minimal precipitation of just 8 mm (0.3 in), and a humidity level of 71%. In contrast, July tends to be warmer, with an average temperature of 23°C (74°F) and a peak of 39°C (103°F), while experiencing even less rainfall at 3 mm (0.1 in) and a slightly lower humidity at 69%. Both months exhibit similar patterns of short-lived precipitation, yet July generally offers hotter days compared to the more moderate September. For a closer look at the specifics, you can check the Porches weather in July.

September's weather offers a slight drop in temperature compared to August, with minimums starting at 11°C (52°F) and maxing out at 37°C (98°F), while the average temperature is 22°C (73°F). In contrast, August experiences warmer nights and days, with a minimum temperature of 14°C (57°F) and maximums reaching up to 43°C (110°F). Precipitation is also minimal in both months, but September sees a slight increase with 8 mm (0.3 in) of rain over just one day, compared to August's negligible 1 mm (0.0 in) across zero rainy days. Humidity levels are comparable, with September at 71% and August slightly lower at 68%. For more details, check Porches weather in August.

September typically experiences warmer temperatures, with a minimum of 11°C (52°F) and an average high of 37°C (98°F), while October sees cooler weather, dropping to a minimum of 8°C (46°F) and an average high of 34°C (93°F). Precipitation increases in October, with 32 mm (1.2 in) falling over 4 days compared to just 8 mm (0.3 in) on 1 day in September. Humidity slightly rises from 71% in September to 75% in October, contributing to a more autumnal feel as the month progresses. For more details, check out Porches weather in October.

September weather is characterized by warmer temperatures, with minimums around 11°C (52°F) and average highs reaching up to 37°C (98°F). It remains relatively dry, with only about 8 mm (0.3 in) of precipitation over a single day and a humidity level of 71%. In contrast, November brings a noticeable drop in temperatures, with a minimum of 4°C (40°F) and an average of 14°C (58°F). This month is much wetter, averaging 49 mm (1.9 in) of precipitation across seven days, along with a slightly higher humidity of 78%. For more details on November weather, you can check Porches weather in November.

The weather in September is characterized by warmer temperatures, with an average of 22°C (73°F) and maximums reaching as high as 37°C (98°F). In contrast, December brings a marked drop in temperature, averaging around 12°C (54°F) with maximums of 22°C (71°F) and minimums dipping to 0°C (33°F). Additionally, September experiences minimal precipitation, with only 8 mm (0.3 in) over just one day, while December sees significantly more rainfall, totaling 45 mm (1.8 in) across six days. The humidity levels also increase from 71% in September to 81% in December, contributing to a cooler and wetter atmosphere. For more details on December weather, you can visit Porches weather in December.

Compare Porches's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Porches

In September, Porches embraces a warm and inviting atmosphere that sets it apart from the cooler, more unpredictable months. With comfortable average temperatures combined with low precipitation, visitors can enjoy outdoor activities while basking in the sun. The humidity is more moderate than in the height of summer, making the warm days feel pleasant rather than stifling. This transition month serves as a perfect gateway to autumn, offering a delightful blend of warmth and tranquility that makes it an ideal time for exploration and relaxation. For more detailed insights, check out the comprehensive information on Porches Climate.