Last updated: February 24, 2025
In September, São Martinho, Portugal, offers a delightful climate, characterized by a maximum temperature of 27°C (81°F) and an average of 21°C (70°F), making it an ideal time for outdoor activities. The minimum temperature dips to a comfortable 17°C (63°F), providing pleasant evenings. While the month does see some rainfall—averaging 18 mm (0.7 in) across 6 days—the overall ambiance remains inviting with a humidity level of 81%. This combination of warm temperatures and manageable precipitation creates a perfect setting for both relaxation and exploration in this beautiful coastal region.
September in São Martinho, Portugal, ushers in a delightful transition from summer to autumn, maintaining pleasantly warm temperatures. The month typically sees minimums around 17°C (63°F), while the average hovers near 21°C (70°F), peaking at a comfortable 27°C (81°F). This slight dip from the sweltering August heat, where temperatures often reached 29°C (84°F), makes September an inviting time for outdoor activities and leisurely beach days. With clear skies and mild evenings, visitors can enjoy the vibrant local culture and picturesque landscapes without the summer crowds. It's the perfect month to experience the warm Mediterranean charm of this beautiful coastal town.
In September, Sao Martinho experiences a gentle transition from the summer dryness to the wetter months ahead. With only 18 mm (0.7 in) of rainfall spread across 6 days, it marks a noticeable increase from the drier summer, yet remains relatively light compared to the autumn months. This is part of a broader trend where precipitation begins to pick up after the parched July and August, which recorded just a combined total of 15 mm. As the region prepares for the coming rainier season, September's mild showers serve as a refreshing prelude, rehydrating the earth and preparing it for the more substantial rains of October and November.
In September, humidity in São Martinho, Portugal, hovers around 81%, marking a slight dip from the peak summer months of July and August, which both recorded 83%. This decrease signals the gradual transition into autumn, yet the humidity remains notably high compared to the cooler months that follow. From January to May, humidity levels consistently fluctuate between 75% and 78%, creating a fresh yet mild atmosphere. Interestingly, the rise in humidity during the summer months indicates a trend towards a more humid and warm climate, while September heralds a subtle shift towards the less humid conditions typical of fall, bringing a refreshing change as the region prepares for the cooler temperatures ahead.
As September arrives in Sao Martinho, Portugal, residents and visitors can expect a UV Index of 10, categorized as very high, indicating a significant risk of harm from unprotected sun exposure. This month marks a gradual transition from the extreme UV levels experienced during the height of summer, where values peaked at 12 in June and July. The burn time decreases to 15 minutes, emphasizing the importance of sun safety as the season shifts. The descending trend in UV intensity from the summer months suggests that while the sun remains strong, there's a slight easing that can be enjoyed with proper skin protection. For detailed information on the UV Index throughout the year, visit Sao Martinho UV Index.
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As summer gracefully transitions into autumn, September in Sao Martinho, Portugal continues to bask in a generous glow of sunshine, boasting an impressive 338 hours of sunlight. This month signifies a slight decline from the peak of July and August, which saw 391 and 380 hours, respectively, yet it remains vibrant compared to the early months of the year. The sun's presence in September is notably robust, reinforcing a delightful trend of abundant daylight that begins in the spring, peaking during the height of summer before gently wading into the softer tones of fall. Visitors can still revel in warm, sunlit days, making it a picturesque time to explore this charming destination, filled with lingering warmth and the promise of beautiful autumnal landscapes.
As summer bids farewell, Sao Martinho, Portugal welcomes September with a moderate likelihood of sunny weather, boasting a 45% chance of sunshine. While this figure shows a slight dip compared to the vibrant July and August months, it still reflects a pleasant transition into autumn. Interestingly, September's sunshine potential aligns closely with October’s 50%, signifying that clear skies can still grace the region as the cooler months approach. Overall, visitors can enjoy a balanced mix of warmth and enjoyable sunshine, ideal for exploring this charming coastal town.
As summer gives way to fall, September in São Martinho, Portugal, offers a gentle transition in daylight duration, with 12 hours of sunshine gracing the days. Following the peak of 14 hours in June and July, daylight begins to wane slightly, shifting to 13 hours in August before settling into a more moderate rhythm. This gradual decrease heralds the onset of autumn, where daylight diminishes steadily, dropping to 11 hours by October. The evolving daylight not only marks the changing seasons but also enriches the landscape with vibrant hues, inviting both locals and visitors to enjoy the serene beauty that characterizes this time of year.
As September arrives in São Martinho, Portugal, the gentle caress of the wind continues to linger, with average speeds settling at 2.8 m/s (6 mph). This month marks a return to a mild breeze, mirroring the lighter currents felt in both April and August. Notably, September transitions the summer's slight uptick in wind speed to the more variable conditions of autumn. Throughout the year, wind speeds generally hover between 2.5 and 3.4 m/s, with a peak in December's fresher gusts. Yet, as summer fades, the consistent winds remind us of nature's rhythm, bringing a soothing ambiance that complements the unfolding change of seasons.
The weather in Sao Martinho 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 Martinho and find detailed weather information for every month.
In September, the weather tends to be quite warm, with average temperatures around 21°C (70°F) and maximums reaching 27°C (81°F). The month experiences relatively low precipitation, averaging only 18 mm (0.7 in) over about 6 days, and humidity levels are high at 81%. In contrast, January presents a cooler climate, with average temperatures dropping to 15°C (59°F) and maximums peaking at 22°C (71°F). Precipitation increases to 38 mm (1.5 in) over approximately 7 days, and humidity is slightly lower at 75%. For a more detailed look at the January weather, visit Sao Martinho weather in January.
In September, temperatures are generally warmer, with averages around 21°C (70°F) and maximums reaching up to 27°C (81°F). The month sees relatively low precipitation, with only about 18 mm (0.7 in) over six days, while humidity hovers at a higher 81%. In contrast, February experiences cooler weather, with an average temperature of 14°C (58°F) and maximums of 22°C (72°F). This month is also wetter, with 60 mm (2.4 in) of rain over nine days, and humidity slightly lower at 75%. For more detailed information, check out the complete forecast here: Sao Martinho weather in February.
September and March present contrasting weather experiences. In September, temperatures range from a mild 17°C (63°F) to a warm 27°C (81°F), with an average of 21°C (70°F), making it a pleasant month. The precipitation is relatively low at 18 mm (0.7 in) over 6 days, with humidity levels around 81%, contributing to a comfortable late summer atmosphere. In contrast, March features cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 24°C (76°F), averaging 14°C (58°F). It is also a wetter month, receiving 52 mm (2.1 in) of rain across 9 days, and a slightly lower humidity of 78%. For more details on the weather specifics, you can check Sao Martinho weather in March.
In comparing the weather conditions of September and April, it is clear that September typically offers warmer temperatures, with an average of 21°C (70°F) and maximums reaching 27°C (81°F), while April features cooler averages at about 15°C (60°F) and maximums of 23°C (74°F). Furthermore, September experiences significantly less precipitation at 18 mm (0.7 in) over just 6 days, compared to April's 56 mm (2.2 in) spread across 12 days. Despite both months having relatively high humidity, September is slightly higher at 81% versus April's 78%. For more detailed information on April weather, you can check Sao Martinho weather in April.
In comparing the weather between September and May, September generally offers warmer temperatures, with a minimum of 17°C (63°F) and an average of 21°C (70°F), compared to May's lower minimum of 12°C (53°F) and average of 17°C (62°F). While both months experience approximately 6 days of rainfall, September sees less precipitation overall at 18 mm (0.7 in) versus May's 23 mm (0.9 in). Humidity levels are slightly higher in September at 81%, while May maintains a comfortable 77%. For more detailed insights, you can check the weather specifics here: Sao Martinho weather in May.
When comparing the weather in September and June, September typically offers slightly warmer temperatures, with averages around 21°C (70°F) compared to June's average of 18°C (65°F). September's minimum temperature is also higher at 17°C (63°F) versus June's 13°C (56°F). Although June sees slightly more rainfall, with 36 mm (1.4 in) compared to September's 18 mm (0.7 in), both months exhibit similar humidity levels, making them both relatively pleasant. For more specific details, you can check out Sao Martinho weather in June.
When comparing the weather in September and July, September typically experiences slightly warmer average temperatures, with a range from a minimum of 17°C (63°F) to a maximum of 27°C (81°F), compared to July's minimum of 16°C (62°F) and the same maximum of 27°C (82°F). Surprisingly, both months see the same high temperatures, but September tends to be a bit more humid at 81%, compared to July's humidity of 83%. Additionally, September has a higher level of precipitation, averaging 18 mm (0.7 in) over about 6 days, while July is relatively drier, recording only 7 mm (0.3 in) over just 1 day. For more specific details on July weather patterns, you can check Sao Martinho weather in July.
In comparing the weather of September and August, we see some notable differences. September maintains a similar minimum temperature of 17°C (63°F) but has a slightly lower average of 21°C (70°F), compared to August, which averages 21°C (71°F). The maximum temperature in August reaches 29°C (84°F), making it warmer than September's peak of 27°C (81°F). Precipitation also differs, with September receiving 18 mm (0.7 in) over 6 days, while August experiences less precipitation at 8 mm (0.3 in) over just 2 days. Humidity levels are relatively close, with September at 81% and August at 83%. For more detailed information about August weather, you can visit Sao Martinho weather in August.
September typically offers warmer weather compared to October, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 27°C (81°F) and an average of 21°C (70°F). It sees relatively low precipitation, accumulating just 18 mm (0.7 in) over about 6 days, with humidity levels hovering around 81%.
In contrast, October experiences slightly cooler temperatures, with a minimum of 14°C (58°F), an average of 20°C (67°F), and a maximum of 28°C (82°F). However, it has increased rainfall, with 57 mm (2.3 in) of precipitation over approximately 10 days, and a humidity level of 80%. For further details, you can refer to Sao Martinho weather in October.
September typically boasts warmer temperatures, with an average of 21°C (70°F) and maximums reaching up to 27°C (81°F), while November sees a drop in the average to 17°C (63°F) but can still peak at 26°C (79°F). Precipitation also increases significantly in November, with 67 mm (2.6 in) over 15 days compared to September's milder 18 mm (0.7 in) spread over just 6 days. Additionally, September experiences higher humidity levels at 81%, compared to the more comfortable 75% found in November. For a more detailed look at the weather in November, check out Sao Martinho weather in November.
September typically boasts warmer temperatures, with an average of 21°C (70°F) and highs reaching 27°C (81°F), while December sees cooler averages around 16°C (61°F) and maximum temperatures of 21°C (70°F). Additionally, September tends to be drier, with only 18 mm (0.7 in) of precipitation over 6 days, compared to December's 58 mm (2.3 in) spread across 11 days, indicating a wetter month. Humidity levels are slightly higher in September at 81%, whereas December experiences a lower humidity of 75%. For more detailed weather information in December, you can check out Sao Martinho weather in December.
As September rolls into Sao Martinho, the weather begins to hint at the transition towards autumn. While temperatures remain pleasantly warm, with averages around 21°C (70°F), there is a noticeable increase in humidity, reaching 81%. Compared to the peak summer months, the overall warmth begins to wane, offering a refreshing respite from the sweltering heat. Precipitation becomes slightly more frequent, with an average of six days experiencing light rain, contributing to the lush landscapes of Madeira. If you're curious about the nuances of the weather throughout the year, don't forget to check out the detailed insights at Sao Martinho Climate.