Last updated: February 24, 2025
In Ribeira Grande, Portugal, September offers a delightful climate characterized by mild temperatures, with an average reaching 22°C (72°F) and maximums peaking at 25°C (77°F), while nights cool down to around 19°C (66°F). This month also sees 11 days of precipitation, accumulating to about 57 mm (2.2 in), contributing to a humid environment with an average humidity of 83%. The blend of moderate temperatures and sporadic rainfall makes September an inviting time for visitors to experience the island's lush landscape and vibrant culture.
In September, Ribeira Grande, Portugal, enjoys a delightful transition into autumn, characterized by mild temperatures that remain inviting for outdoor activities. The minimum temperature hovers around 19°C (66°F), while the average rises to a comfortable 22°C (72°F), peaking at a pleasant 25°C (77°F). This pattern reflects a slight cooling trend from the warmer summer months, yet it still invites visitors to bask in the warm sun and explore the stunning landscapes. As the weather begins to shift, September presents the perfect opportunity to experience the natural beauty and vibrant culture of Ribeira Grande before the chill of autumn fully sets in.
In September, Ribeira Grande experiences a hint of autumn, with precipitation totaling 57 mm (2.2 in) over 11 days. This slight decrease in rainfall compared to August reflects the transitional nature of the month, as summer gives way to the wetter fall season. While still experiencing a moderate amount of rain, September's totals are notably lower than the heavy downpours anticipated just a few months afterward in November, which sees 124 mm (4.9 in) across 15 days. Overall, this month serves as a bridge, offering a gentle reminder that while summer's warmth lingers, the Island’s characteristic precipitation is on the rise once again.
In September, Ribeira Grande, Portugal, experiences a comfortable humidity level of 83%, which aligns with the milder trends seen in the preceding months of August and May. Throughout the year, humidity in this coastal gem hovers around the mid-80s, with peaks in July at 86% and consistent figures in March and April. The late summer and early fall months show a slight decrease in humidity, tapering off to 79% in October, indicating a transition toward drier conditions as autumn sets in. This pattern suggests that while Ribeira Grande enjoys a generally humid climate, September marks the beginning of a subtle shift towards more pleasant, crisp air.
In September, Ribeira Grande experiences a UV Index of 9, categorized as very high, which means sun exposure should be approached with caution. This indicates a slight decrease from the peak of June's intense 11, yet still requires vigilance as the burn time is a mere 15 minutes. Throughout the summer months, the UV Index remained consistently high, peaking in May and June, before tapering off slightly into fall. As autumn sets in, the UV levels drop, signaling a shift in sun safety practices. For residents and visitors alike, it's essential to stay informed about the UV Index trends throughout the year, especially during these high-risk periods. To learn more about daily UV levels, check out Ribeira Grande UV Index.
UV Risk Categories
September in Ribeira Grande, Portugal, offers a delightful blend of warm weather and abundant sunshine, with 319 hours of glorious daylight. This month marks a gentle transition from the peak summer days of July, which shines with an impressive 388 hours, to the milder brightness of October, featuring 276 hours. The trend reveals that as summer wanes, the sunlight remains generous, providing a perfect backdrop for exploring the region's natural beauty and vibrant culture. With a consistent supply of sunshine leading up to September, visitors can relish in the early autumn warmth while experiencing the area's breathtaking landscapes and captivating local traditions.
As summer transitions into autumn, September in Ribeira Grande, Portugal, showcases a notable drop in sunny weather likelihood compared to the peak months of July and August. With a 43% chance of sunshine, September retains a decent amount of brightness, making it an appealing time for outdoor activities, yet it signals the onset of the wetter season. The month stands out for its favorable conditions relative to the lower chances in October and November. Overall, while late summer sun lingers, the gradual decline in sunny days ushers in the rich colors of autumn in this picturesque region.
In Ribeira Grande, Portugal, September marks a gentle transition from the long, sun-drenched days of summer to the shorter daylight hours of fall. With 12 hours of daylight, this month sees a gradual decrease from the peak of 14 hours experienced in the summer months of June, July, and August. As the days grow shorter, the vibrant hues of autumn begin to emerge, creating a picturesque setting that invites exploration of the region's natural beauty. This shift in daylight is a reminder of the cyclical nature of the seasons, as September gracefully bridges the gap between the sun-soaked days of summer and the cozy embrace of autumn.
As September unfolds in Ribeira Grande, Portugal, the wind begins to whisper a gentle transition, averaging 6.4 m/s (14 mph)—a slight increase from the summer months of July and August. This reflects a subtle uptick in breeziness as the region prepares for the autumnal shift. Historically, the wind speed tends to rise in the latter part of the year, with October showing a modest increase to 6.7 m/s (15 mph). While summer offers a more tranquil breeze, September captures a harmonious blend of mild winds and warm remnants of the season, creating an inviting atmosphere that beckons both locals and visitors to embrace the beauty of the changing landscape. As the months progress, the winds will pick up pace again, hinting at the invigorating gusts of late autumn that lie ahead.
The weather in Ribeira Grande 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 Ribeira Grande and find detailed weather information for every month.
In comparing the weather between September and January, one can observe distinct differences. September boasts a warmer climate with average temperatures reaching 22°C (72°F), while January sees a cooler average of 16°C (61°F). During September, the maximum temperature of 25°C (77°F) offers a pleasant summer feel, whereas in January, temperatures peak at just 19°C (66°F). Additionally, September experiences less precipitation at 57 mm (2.2 in) over 11 days, compared to January's 90 mm (3.6 in) spread across 12 days. Humidity levels remain relatively stable, with September at 83% and January slightly higher at 84%. For more detailed information, you can check Ribeira Grande weather in January.
September and February present contrasting weather conditions in terms of temperature and precipitation. In September, temperatures are warmer, with an average of 22°C (72°F) and highs reaching up to 25°C (77°F), making it a pleasant time of year. In contrast, February experiences cooler temperatures, averaging 15°C (59°F) and peaking at 18°C (64°F). Despite February's cooler climate, it is marked by slightly higher precipitation levels at 79 mm (3.1 in) over 14 days, compared to September's 57 mm (2.2 in) spread over 11 days. Interestingly, both months share a consistent humidity level of 83%. For more details on February weather specifics, you can check Ribeira Grande weather in February.
In comparing the weather of September and March, we see a noticeable difference in temperatures and overall conditions. September boasts a warmer climate with minimum temperatures around 19°C (66°F) and average highs reaching up to 25°C (77°F), accompanied by relatively high humidity at 83%. In contrast, March presents cooler temperatures, with minimums of 10°C (51°F) and maximums of 18°C (65°F), while still experiencing a humid environment at 85%. Precipitation levels are similar, with September receiving 57 mm over 11 days and March slightly higher at 63 mm across 10 days. For a detailed overview of March weather, you can check out Ribeira Grande weather in March.
When comparing September and April weather, September boasts warmer temperatures, with averages reaching 22°C (72°F) compared to April's cooler 15°C (60°F). While September experiences a higher maximum temperature of 25°C (77°F), April's minimum temperature is significantly lower at 9°C (49°F). Precipitation is more frequent in April, with 14 rainy days and a total of 75 mm (3.0 in), whereas September has fewer rainy days, totaling 57 mm (2.2 in) across 11 days. Humidity levels are quite similar, with September at 83% and April slightly higher at 85%. For a closer look at the weather specifics in April, consider checking out Ribeira Grande weather in April.
September generally enjoys warmer temperatures compared to May, with minimum temperatures around 19°C (66°F) and an average of 22°C (72°F), while May’s temperatures range from a minimum of 12°C (53°F) to an average of 17°C (62°F). Both months experience similar humidity levels at 83%, but September typically sees higher maximum temperatures, peaking at 25°C (77°F) compared to May's 20°C (67°F). Precipitation is relatively comparable, with September receiving 57 mm (2.2 in) and May recording 63 mm (2.5 in), both spread over 11 days. For more detailed information, you can check Ribeira Grande weather in May.
When comparing the weather in September and June, September typically offers warmer temperatures, with a minimum of 19°C (66°F) and an average of 22°C (72°F), while June features slightly cooler temperatures, with a minimum of 14°C (57°F) and an average of 19°C (66°F). Additionally, September experiences more precipitation, totaling 57 mm (2.2 in) over 11 days, compared to June's 38 mm (1.5 in) over just 6 days. Humidity levels in both months remain relatively high, with September at 83% and June at 85%. For a more detailed comparison of June weather, you can visit Ribeira Grande weather in June.
When comparing the weather in September to that of July, September tends to be slightly warmer, with average temperatures reaching 22°C (72°F) compared to July's average of 21°C (70°F). Both months experience mild minimum temperatures of around 18-19°C, but September has a higher maximum temperature, peaking at 25°C (77°F) compared to July's maximum of 24°C (75°F). In terms of precipitation, September is noticeably wetter, receiving 57 mm (2.2 in) over 11 days, while July only sees 27 mm (1.1 in) across 5 days. Humidity is also higher in July at 86%, compared to 83% in September. For more detailed insights about July weather, you can check Ribeira Grande weather in July.
In comparing the weather of September to August, we see that both months have similar temperature ranges, with September experiencing a minimum of 19°C (66°F) and an average of 22°C (72°F), while August starts slightly warmer with a minimum of 20°C (68°F). Both months peak at a maximum of 25°C (77°F). Precipitation levels in September total 57 mm (2.2 in) over 11 days, just slightly less than August's 58 mm (2.3 in) over 9 days. Humidity remains consistent, holding steady at 83% during both months, contributing to a similar overall feel. For a more detailed look at August's weather, you can check Ribeira Grande weather in August.
In comparing the weather of September and October, we observe a slight decline in average temperatures, with September averaging 22°C (72°F) compared to October's 20°C (69°F). Both months have maximum temperatures that are similar, with October peaking at 25°C (76°F), just shy of September's 25°C (77°F). However, October sees an increase in precipitation, totaling 74 mm (2.9 in) over 12 days, compared to September's 57 mm (2.2 in) across 11 days. Humidity levels remain relatively high in both months, with September at 83% and October slightly lower at 79%. For a detailed look at October weather patterns, you can check out Ribeira Grande weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures are generally warmer, with a minimum of 19°C (66°F) and an average of 22°C (72°F), peaking at 25°C (77°F). The humidity is relatively high at 83%, and the month sees about 57 mm (2.2 in) of precipitation over 11 days. In contrast, November brings cooler temperatures, with a minimum of 14°C (57°F), an average of 18°C (65°F), and a maximum of 22°C (71°F). Rainfall increases significantly to 124 mm (4.9 in) over 15 days, while humidity slightly decreases to 80%. For a detailed look at weather specifics during this month, visit Ribeira Grande weather in November.
In September, the weather tends to be warmer with average temperatures hovering around 22°C (72°F) and maximums reaching up to 25°C (77°F), accompanied by a relatively mild humidity of 83%. Precipitation is moderate, with about 57 mm (2.2 in) over 11 days. In contrast, December brings cooler temperatures, with averages dropping to 17°C (63°F) and a maximum of 20°C (68°F). However, it experiences increased precipitation of 108 mm (4.3 in), falling over 14 days, and slightly higher humidity at 85%. For more detailed weather insights, check out Ribeira Grande weather in December.
As summer transitions to autumn, September in Ribeira Grande offers a delightful escape with pleasantly warm days and slightly cooler nights. Unlike the blistering heat of July and August, temperatures here become more moderate, inviting both locals and travelers to explore the stunning landscapes without the sweltering humidity. While you might encounter some rain, with around 11 days of precipitation, this adds to the lush scenery rather than detracting from it. With an average humidity of 83%, the air feels refreshing, making it a perfect time for outdoor activities. For a deeper insight into the variations of weather throughout the year, check out Ribeira Grande Climate.