September Weather in Sao Jorge, Portugal

Last updated: February 24, 2025

In September, São Jorge, Portugal experiences a delightful blend of warm summer remnants and the gentle onset of autumn. With maximum temperatures reaching 27°C (81°F) and an average of 21°C (70°F), visitors can enjoy pleasant outdoor activities. The minimum temperature dips to a comfortable 17°C (63°F), perfect for cooler evenings. Although precipitation is relatively low at 18 mm (0.7 in), rain may grace the island on 6 days throughout the month, contributing to lush landscapes. With humidity levels around 81%, the air feels refreshing, making September an ideal time to explore the captivating beauty of São Jorge.

September Temperature in Sao Jorge

In September, Sao Jorge, Portugal, showcases a delightful transition as summer wanes, bringing a comfortable climate that is perfect for outdoor adventures. Temperatures range from a pleasant 17°C (63°F) at night to an inviting 27°C (81°F) during the day, with an average of 21°C (70°F). This gradual decline in maximum temperatures from the peak summer heat presents an ideal opportunity to explore the island’s lush landscapes without the intense heat of August. As the month progresses, the mild conditions offer a refreshing escape, making September an excellent time for travelers seeking both warmth and tranquility in this picturesque locale.

September Weather in Sao Jorge: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Jorge, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec585858596265687169676360
Data source: Temperature data for Sao Jorge 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 Sao Jorge

In September, São Jorge, Portugal, experiences a notable transition as summer wanes, marked by 18 mm (0.7 in) of precipitation over approximately 6 days. This amount reflects a slight uptick from the preceding dry months of July and August, which recorded only 7 mm and 8 mm, respectively. The increase hints at the upcoming wetter months, contrasting sharply with the low precipitation typically seen during the peak of summer. As the island gears up for autumn, this early September rainfall begins to nurture the lush greenery that São Jorge is famed for, setting the stage for the more frequent and heavier rains of October and November ahead.

September Precipitation Trends in Sao Jorge

The chart displays monthly precipitation patterns in Sao Jorge, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3860525623368818576758
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sao Jorge

In September, the humidity in Sao Jorge, Portugal, hovers at a moderate 81%, continuing the trend of the summer months. After a series of warmer, moist conditions in July and August, which peaked at 83%, the arrival of September shows a slight decline, yet remains higher than earlier months in the year. Notably, the humidity levels began to rise in the warmer months, starting from 75% in January and gradually climbing through the summer. As autumn approaches, humidity is anticipated to decrease further, returning to more comfortable levels by October, showcasing the island's distinct seasonal shifts.

September Average Humidity in Sao Jorge

This chart illustrates the average monthly humidity levels in Sao Jorge, 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.
JanFebMarAprMayJunJulAugSepOctNovDec75%75%78%78%77%80%83%83%81%80%75%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sao Jorge

In September, Sao Jorge, Portugal, experiences a significant shift in its UV index, peaking at 10, categorized as very high. As the summer months fade, sun seekers and outdoor enthusiasts should remain vigilant, with a burn time of just 15 minutes if protection isn't applied. This trend highlights a continuation of extreme UV levels from June through August, where indices reached an astonishing 12, before tapering off in October with a UV Index of 8. As visitors plan their adventures, it's crucial to stay informed and protect their skin; for more details, check out the Sao Jorge UV Index.

Maximum UV Index Levels in Sao Jorge for September

The chart shows the monthly maximum UV Index (UVI) for Sao Jorge 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101112111110864
Data source: Sao Jorge 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 Sao Jorge

In September, Sao Jorge, Portugal continues to bask in the warm embrace of late summer sunshine, boasting 338 hours of bright daylight. This month reflects a gradual decline from the sun-soaked heights of July and August, which provided the peak sunshine hours at 391 and 380 hours, respectively. The shift towards autumn is subtle yet noticeable, as the lush landscapes begin to transition, inviting visitors to experience the island’s unique blend of vibrant nature and rich culture. Despite the slight drop in sunshine, September remains one of the sunniest months of the year, transitioning smoothly into October's still-generous 321 hours of sunlight. This trend sets the perfect backdrop for exploring Sao Jorge's stunning scenery and enjoying lingering summer activities before the cooler months arrive.

Monthly Sunshine Duration in Sao Jorge: September Highlighted

The September sunshine duration represents the total number of hours Sao Jorge 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.
JanFebMarAprMayJunJulAugSepOctNovDec191h244h299h352h373h376h391h380h338h321h260h246h
Data source: Sao Jorge September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sao Jorge During September

As summer gently transitions into autumn, Sao Jorge enjoys a notable increase in sunshine during September, with a 45% chance of clear skies. This marks a slight dip from the sultry heights of July and August, which boast probabilities of 63% and 60%, respectively. However, September stands out as a promising month compared to earlier in the year, when chances of sun peaked at just 44% in both February and May. As the days begin to cool, the consistent average light brings a blend of warmth and tranquility, perfect for exploring the island's stunning landscapes and rich culture.

Percentage of Sunny Days in September in Sao Jorge

The chart illustrates the percentage of sunny days in Sao Jorge 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 Sao Jorge experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%44%43%38%44%43%63%60%45%50%37%32%
Data source: Sao Jorge September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sao Jorge in September

As summer gradually fades in September, Sao Jorge, Portugal, experiences a subtle decline in daylight, with 12 hours illuminating the landscape. This marks a gentle transition from the peak of 14 hours enjoyed in June and July to the softer glow of autumn, where days shorten leading into October's 11 hours. The trend reveals a rhythmic cycle, where longer days of early summer gradually yield to the cozy comforts of shorter daylight as the season shifts. It's a perfect time to embrace the changing hues of nature and relish the balance between sunlit days and crisp evenings.

Average Daylight Hours in Sao Jorge for September

The chart illustrates the variation in daylight duration in Sao Jorge throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 15m11h11h 59m13h13h 50m14h 15m14h 2m13h 17m12h 19m11h 19m10h 27m10h
Data source: Sao Jorge daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sao Jorge

In September, the winds of São Jorge, Portugal, remain pleasantly mild, with an average speed of 2.8 m/s (6 mph). This consistent breeze showcases a slight dip from the summer months, where July and August recorded higher speeds of 3.2 m/s and 2.7 m/s, respectively. As summer gives way to autumn, September's winds set a gentle tone, preparing the landscape for the changing season ahead. Notably, the months leading into fall, particularly October, continue to showcase this calming trend with even lighter winds averaging 2.5 m/s (6 mph). This serene wind pattern not only enhances the natural beauty of São Jorge but also creates an inviting atmosphere for visitors and locals to enjoy the stunning vistas of this enchanting island.

Average September Wind Speed in Sao Jorge

The chart displays monthly wind speed patterns in Sao Jorge, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.82.93.22.73.03.13.22.72.8 m/s2.52.93.4
Data source: Sao Jorge September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sao Jorge Compares to Other Months

The weather in Sao Jorge 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 Sao Jorge and find detailed weather information for every month.

September and January present contrasting weather experiences. In September, temperatures range from a comfortable 17°C (63°F) to a warm 27°C (81°F), with an average of 21°C (70°F) and relatively low precipitation at 18 mm (0.7 in) over six days, accompanied by high humidity at 81%. In contrast, January sees cooler conditions, with temperatures varying from a minimum of 9°C (49°F) to a maximum of 22°C (71°F), averaging 15°C (59°F). The month receives more precipitation, totaling 38 mm (1.5 in) over seven days, and features slightly lower humidity at 75%. For more details on January weather, you can check Sao Jorge weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a pleasant minimum of 17°C (63°F) to a maximum of 27°C (81°F), with an average of 21°C (70°F). Precipitation is relatively low at 18 mm (0.7 in) over six days, and humidity levels are high at 81%. Conversely, February sees cooler temperatures, with a minimum of 9°C (49°F) and a maximum of 22°C (72°F), averaging 14°C (58°F). This month experiences significantly more rainfall, totaling 60 mm (2.4 in) over nine days, along with a slightly lower humidity of 75%. For a detailed overview of February weather, check out Sao Jorge weather in February.

In comparing the weather between September and March, September is generally warmer, with average temperatures around 21°C (70°F) and maximums reaching 27°C (81°F). It experiences relatively low precipitation with only 18 mm (0.7 in) over 6 days, and humidity levels are quite high at 81%. In contrast, March tends to be cooler, with average temperatures of 14°C (58°F) and maximums of 24°C (76°F), but it sees significantly more rainfall, accumulating 52 mm (2.1 in) over 9 days, while humidity hovers around 78%. For more detailed weather information in March, you can check Sao Jorge weather in March.

When comparing the weather in September and April, it's clear that September tends to be warmer and drier. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 27°C (81°F), with an average of 21°C (70°F) and only 18 mm (0.7 in) of precipitation over about 6 days. On the other hand, April experiences cooler temperatures, ranging from a minimum of 11°C (51°F) to a maximum of 23°C (74°F), with an average of 15°C (60°F). However, April is significantly wetter, receiving 56 mm (2.2 in) of rainfall spread across about 12 days and slightly lower humidity at 78%. For a detailed look at the weather conditions in April, you can visit Sao Jorge weather in April.

In comparing the weather between September and May, September typically enjoys milder conditions with average temperatures ranging from a minimum of 17°C (63°F) to a comfortable maximum of 27°C (81°F). In contrast, May presents slightly cooler temperatures, with averages between 12°C (53°F) and 26°C (78°F). While both months experience a similar number of precipitation days, September has notably lower rainfall at 18 mm (0.7 in) compared to May's 23 mm (0.9 in). Humidity levels are relatively high in both months, with September at 81% and May at 77%. For more detailed information, you can check Sao Jorge weather in May.

In comparing the weather between September and June, September typically offers warmer temperatures, with a minimum of 17°C (63°F) and an average of 21°C (70°F), peaking at a maximum of 27°C (81°F). In contrast, June sees cooler temperatures, starting at 13°C (56°F) and averaging 18°C (65°F), with a high of 26°C (79°F). Precipitation levels also differ, as September experiences less rain at 18 mm (0.7 in) over 6 days, while June has a higher total of 36 mm (1.4 in) across 7 days. Both months maintain similar humidity levels, around 80-81%. For more detailed information, you can check Sao Jorge weather in June.

When comparing the weather in September and July, we see that both months experience similar temperature ranges, with max temperatures peaking at around 27°C (81°F) in both months. However, September offers slightly higher minimum and average temperatures, with a minimum of 17°C (63°F) and an average of 21°C (70°F), compared to July's 16°C (62°F) minimum and 20°C (68°F) average. Additionally, September is wetter, receiving 18 mm (0.7 in) of precipitation over six days, while July is relatively dry with only 7 mm (0.3 in) of rain on just one day. Humidity levels are also quite comparable, with September at 81% and July slightly higher at 83%. For more details on July weather, check Sao Jorge weather in July.

In August, temperatures tended to be slightly warmer with daily averages reaching up to 21°C (71°F) and a maximum of 29°C (84°F), compared to September's maximum of 27°C (81°F). While both months had the same minimum temperature of 17°C (63°F), September experienced a bit more precipitation, measuring 18 mm (0.7 in) over 6 days, in contrast to August's lighter 8 mm (0.3 in) spread over just 2 days. Humidity levels remained relatively similar, with August at 83% and September at 81%. For more details on August weather, you can check Sao Jorge weather in August.

In comparing the weather between September and October, September tends to be slightly warmer with average temperatures around 21°C (70°F) and maximum highs reaching 27°C (81°F), while October sees a minor dip in average temperature to 20°C (67°F) and a similar maximum of 28°C (82°F). However, October experiences significantly more precipitation, totaling 57 mm (2.3 in) over 10 days, compared to September's 18 mm (0.7 in) over only 6 days. Humidity remains fairly consistent, with September at 81% and October slightly lower at 80%. For more detailed insights, you can check Sao Jorge weather in October.

In September, the weather tends to be warmer and more humid, with average temperatures around 21°C (70°F) and maximums reaching 27°C (81°F). The month sees only 18 mm of precipitation over about 6 days, making it a relatively dry period. In contrast, November brings cooler temperatures, with an average of 17°C (63°F) and a minimum of 10°C (51°F). However, it is significantly wetter, with 67 mm of rain spread across 15 days. The humidity in November is slightly lower at 75%. For more detailed information, you can check Sao Jorge weather in November.

September offers a warmer climate with average temperatures reaching 21°C (70°F) and maximums of 27°C (81°F), while December experiences cooler averages of 16°C (61°F) and a maximum of 21°C (70°F). The precipitation also varies significantly; September sees 18 mm (0.7 in) over 6 days, whereas December has a substantial increase with 58 mm (2.3 in) occurring over 11 days. Additionally, September boasts higher humidity at 81%, compared to December’s 75%. For more detailed information on December weather in the region, check out Sao Jorge weather in December.

Compare Sao Jorge's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sao Jorge

As September unfolds in Sao Jorge, the weather begins to transition, offering a delightful blend of warm temperatures and refreshing relief from the peak summer heat. With pleasant afternoons averaging around 21°C (70°F) and a comfortable humidity of 81%, visitors can enjoy outdoor activities without feeling overwhelmed. Although the month sees some rain, with about six days of precipitation totaling 18 mm (0.7 in), this is a welcome contrast to the drier summer months. Overall, September presents a balanced climate that invites exploration, making it an ideal time for travelers seeking to experience the charm of Sao Jorge. For more detailed insights, check out the Sao Jorge Climate.