September Weather in Santa Cruz, Portugal

Last updated: February 24, 2025

In September, Santa Cruz, Portugal experiences a pleasant climate characterized by mild temperatures averaging around 21°C (71°F). The month sees a maximum daily high of 25°C (77°F), while nighttime temperatures can dip to a comfortable 19°C (66°F). Visitors can expect some light rain, with an average precipitation of 22 mm (0.9 in) over approximately 8 days, contributing to the region's lush greenery. Humidity levels hover around 81%, adding a touch of warmth and ensuring a refreshing coastal atmosphere. This blend of mild weather and occasional showers makes September an ideal time to explore the beauty of Santa Cruz.

September Temperature in Santa Cruz

In Santa Cruz, Portugal, September marks the transition from summer to autumn, bringing warm and pleasant weather that lingers in the air. With temperatures ranging from a minimum of 19°C (66°F) to a maximum of 25°C (77°F), the month offers a delightful average of 21°C (71°F), making it an ideal time for both beachgoers and outdoor enthusiasts. This pattern of warmth follows the peak summer months of July and August, where highs reached up to 25°C (78°F). As September unfolds, visitors can still enjoy the sun and mild evenings before the temperatures gradually dip in October, illustrating a smooth yet noticeable shift in the climate as the year progresses.

September Weather in Santa Cruz: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Cruz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec606060616366697170686562
Data source: Temperature data for Santa Cruz 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 Santa Cruz

September in Santa Cruz, Portugal, sees a notable shift in precipitation patterns as the summer months transition into fall. With 22 mm (0.9 in) of rain over 8 days, this month experiences a mild increase in moisture compared to the drier summer, reflecting a gradual ramp-up in precipitation as autumn approaches. This rise in rainfall lays the groundwork for the wetter months ahead, signaling a return to more consistent rainfall after the notably dry July and August, which only captured 12 mm and 13 mm respectively. As the region prepares for October's more substantial total of 54 mm (2.1 in) across 10 days, September serves as a gentle reminder that the lush landscapes of Santa Cruz are soon to be revitalized by the rains of the changing season.

September Precipitation Trends in Santa Cruz

The chart displays monthly precipitation patterns in Santa Cruz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec435449471833131322546162
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Cruz

September in Santa Cruz, Portugal, typically showcases a humidity level of 81%, reflecting the tail end of warmer summer months. As the year progresses, the humidity tends to reach its peak during the height of summer, averaging 83% in both July and August. This slight dip to 81% in September marks a transition towards more comfortable conditions as the fall season approaches. The humidity levels gradually decrease in the following months, settling back to 75% by November. Overall, September offers a blend of summer warmth with a hint of autumn freshness, making it a unique time for experiencing the region's coastal charm.

September Average Humidity in Santa Cruz

This chart illustrates the average monthly humidity levels in Santa Cruz, 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 Santa Cruz

As September arrives in Santa Cruz, Portugal, the UV Index remains notably high at 10, indicating a very high exposure category. This trend marks a slight decrease from the extreme levels experienced during the summer months of June through August, where the index consistently peaked at 11. With a burn time of 15 minutes, September still demands vigilance, as sun exposure can lead to skin damage relatively quickly. This month serves as a reminder of the lingering summer sun, transitioning into autumn while maintaining a level of caution. For more detailed information on UV Index readings throughout the year, visit Santa Cruz UV Index.

Maximum UV Index Levels in Santa Cruz for September

The chart shows the monthly maximum UV Index (UVI) for Santa Cruz 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Santa Cruz 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 Santa Cruz

September in Santa Cruz, Portugal, offers a delightful transition from the vibrant summer months, basking in an impressive 339 hours of sunshine. As the summer wraps up, the daylight remains abundant, albeit slightly diminished compared to the peak of July, which boasts nearly 388 hours. The sunlit days of September still invite outdoor exploration and beach relaxation, reminding visitors of the warmth of the summer while gracefully ushering in the cooler autumn breezes. With a significant drop from the earlier months of the year, from a mere 190 hours in January to September's bountiful glow, it's evident that Santa Cruz is a place where summer lingers delightfully into the fall, providing a lovely backdrop for those seeking sun-soaked memories.

Monthly Sunshine Duration in Santa Cruz: September Highlighted

The September sunshine duration represents the total number of hours Santa Cruz 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.
JanFebMarAprMayJunJulAugSepOctNovDec190h246h301h352h373h376h388h380h339h320h260h246h
Data source: Santa Cruz September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Santa Cruz During September

As summer turns to fall, September in Santa Cruz, Portugal, offers a notable likelihood of sunshine, with approximately 48% chance of clear skies. This marks a transition from the peak summer months, where August boasts the highest sunshine probability at 58%. Interestingly, September maintains this elevated sunshine level, paralleling the sunny disposition seen in July. Following this month, the chances of sunny weather dip slightly in October and November, settling around 47% and 37% respectively. Thus, visitors in September can still bask in the warmth and beauty of Santa Cruz, while the overall trend indicates a gradual shift towards less sunny days as autumn beckons.

Percentage of Sunny Days in September in Santa Cruz

The chart illustrates the percentage of sunny days in Santa Cruz 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 Santa Cruz experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%47%41%43%40%42%48%58%49%47%37%31%
Data source: Santa Cruz September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Santa Cruz in September

As summer gently gives way to autumn, September in Santa Cruz, Portugal, offers a perfect blend of lingering warmth and gradual transition. With 12 hours of daylight, this month marks a slight decrease from the bright and vibrant 14 hours of June and July. The rhythm of the year unfolds as daylight wanes, dipping to 13 hours in August and continuing its subtle decline. This pattern reflects a seasonal shift where the days are still long enough for sun-soaked adventures, yet gradually hinting at the cozy embrace of fall. While October will usher in shorter days with 11 hours of sunlight, September presents an ideal opportunity to relish the last golden hours of summer.

Average Daylight Hours in Santa Cruz for September

The chart illustrates the variation in daylight duration in Santa Cruz 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 1m
Data source: Santa Cruz daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Santa Cruz

As summer fades into fall, September in Santa Cruz experiences a gentle breeze, with average wind speeds measuring 3.9 m/s (9 mph). This slightly uptick from the calmer August days hints at a transition, as the coastal air begins to shift into the cooler months. Interestingly, the winds remain consistent, hovering around the 9 mph mark from the previous months, providing a pleasant atmosphere for both beachgoers and wind enthusiasts alike. Notably, the peak wind speeds occur during late spring and summer, specifically in March and July, where the average reaches 4.8 m/s (11 mph). As September rolls in, it seamlessly bridges the vibrant summer energy with the more temperate autumn, making it a delightful time to enjoy the coastal charm of Portugal.

Average September Wind Speed in Santa Cruz

The chart displays monthly wind speed patterns in Santa Cruz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.83.74.83.34.84.74.93.83.9 m/s3.84.54.6
Data source: Santa Cruz September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Santa Cruz Compares to Other Months

The weather in Santa Cruz 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 Santa Cruz and find detailed weather information for every month.

September and January present distinct weather patterns. In September, temperatures are warmer with averages around 21°C (71°F) and highs reaching 25°C (77°F), while January experiences cooler conditions with an average temperature of 16°C (61°F) and maximums of 21°C (70°F). Precipitation in January is more pronounced, accumulating 42 mm (1.7 in) over 7 days compared to September's 22 mm (0.9 in) across 8 days. Additionally, humidity levels are slightly higher in September at 81%, while January maintains a lower humidity of 75%. For more detailed insights on January weather, visit Santa Cruz weather in January.

In comparing the weather between September and February, September enjoys warmer temperatures, with averages around 21°C (71°F) and maximums reaching 25°C (77°F), while February sees cooler averages of 15°C (60°F) and maximums of 21°C (69°F). There is also a noticeable difference in precipitation, as February experiences significantly more rain with 54 mm (2.1 in) compared to September’s 22 mm (0.9 in), though both months average similar days of rainfall (8-9 days). Additionally, September is more humid at 81%, while February retains a lower humidity level of 75%. For more detailed insights into February weather, you can visit Santa Cruz weather in February.

When comparing the weather in September and March, it is clear that September tends to be warmer and drier. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 25°C (77°F), with an average of 21°C (71°F). The precipitation is relatively low at 22 mm (0.9 in) across eight rainy days, and the humidity is quite high at 81%. In contrast, March experiences cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 22°C (71°F), averaging 15°C (60°F). This month sees more rainfall, totaling 49 mm (1.9 in) on about ten days, while humidity is slightly lower at 78%. For more detailed weather information about March, visit Santa Cruz weather in March.

In September, the weather is generally warmer with average temperatures ranging from a minimum of 19°C (66°F) to a maximum of 25°C (77°F), making it a pleasant time for outdoor activities. In contrast, April experiences cooler temperatures, with averages between 12°C (55°F) and 21°C (70°F), signaling the end of winter and the arrival of spring. Although both months receive rainfall on about the same number of days, April has nearly double the precipitation at 47 mm (1.8 in) compared to September's 22 mm (0.9 in). Additionally, humidity levels are slightly higher in September at 81% compared to 78% in April. For more details on April weather in Santa Cruz, check out Santa Cruz weather in April.

When comparing the weather in September and May, September tends to be warmer and more humid. In September, temperatures range from a minimum of 19°C (66°F) to a maximum of 25°C (77°F), with an average of 21°C (71°F). The month experiences around 22 mm (0.9 in) of precipitation over approximately 8 days, with a humidity level of 81%. In contrast, May features cooler temperatures, with a minimum of 13°C (55°F), a maximum of 22°C (73°F), and an average of 17°C (63°F). It receives slightly less rainfall, with 18 mm (0.7 in) over about 6 days, and a lower humidity level of 77%. For more details on May's weather, you can check this link: Santa Cruz weather in May.

In comparing the weather of September and June, we see some distinct variations. September typically boasts warmer temperatures, with a minimum of 19°C (66°F) and an average of 21°C (71°F), while June's temperatures range from a minimum of 15°C (59°F) to an average of 19°C (66°F). Additionally, September experiences slightly less rainfall, with 22 mm (0.9 in) of precipitation over 8 days, compared to June's 33 mm (1.3 in) over 6 days. However, both months exhibit similar humidity levels, hovering around 81% in September and 80% in June. For more detailed information, you can check out Santa Cruz weather in June.

In comparing the weather between September and July, September tends to be slightly warmer, with average temperatures reaching 21°C (71°F) compared to July's average of 20°C (69°F). The maximum temperature in September can reach up to 25°C (77°F), while in July, it peaks at 24°C (76°F). September experiences more precipitation, totaling 22 mm (0.9 in) over approximately 8 days, contrasted with July's lighter rainfall of just 12 mm (0.5 in) over only 2 days. Humidity levels are quite similar, with September at 81% and July at 83%. For more detailed information about July weather, visit Santa Cruz weather in July.

In comparing the weather between August and September, we see that both months enjoy similar average temperatures, with September experiencing a slight increase in minimum temperature at 19°C compared to August's 18°C. The maximum temperature remains consistent, peaking at 25°C for both months. However, September faces significantly more precipitation, with 22 mm falling over 8 days, while August has only 13 mm of rain over 4 days. Additionally, humidity levels are slightly lower in September at 81%, compared to August's 83%. For more detailed information on August weather, you can check Santa Cruz weather in August.

September generally experiences warmer temperatures, with minimums averaging around 19°C (66°F) and maximums reaching up to 25°C (77°F). There is relatively less rainfall, with a total of 22 mm (0.9 in) over about 8 days and humidity levels at a comfortable 81%. In contrast, October sees a slight decrease in minimum temperatures to 16°C (62°F), although maximums can still climb to 26°C (78°F). However, this month is characterized by increased precipitation, totaling 54 mm (2.1 in) over approximately 10 days, with humidity remaining similar at 80%. For more detailed information, check out Santa Cruz weather in October.

In comparing the weather between September and November, September enjoys warmer temperatures, with a minimum of 19°C (66°F) and an average of 21°C (71°F), while November sees cooler minimums of 12°C (53°F) and an average of 18°C (65°F). The maximum temperatures in September reach up to 25°C (77°F), slightly higher than November's peak of 24°C (75°F). Additionally, September experiences less precipitation at 22 mm (0.9 in) over 8 days, compared to November's wetter conditions with 61 mm (2.4 in) spread over 15 days. While September is more humid at 81%, November's humidity is slightly lower at 75%. For more details, check out Santa Cruz weather in November.

In September, the weather is generally warmer, with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 25°C (77°F) and an average around 21°C (71°F). The month experiences relatively low precipitation at 22 mm (0.9 in) over about 8 days, accompanied by high humidity levels of 81%. In contrast, December sees cooler temperatures with a range from a minimum of 12°C (53°F) to a maximum of 20°C (69°F) and an average of 17°C (63°F). Rainfall increases significantly to 62 mm (2.4 in) over approximately 13 days, while humidity drops slightly to 75%. For more insights into December weather, check out Santa Cruz weather in December.

Compare Santa Cruz's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Santa Cruz

As September arrives in Santa Cruz, the weather takes a delightful turn, offering a refreshing blend of mild temperatures and an invigorating ocean breeze. While the maximum temperature can reach a comfortable 25°C (77°F), the overall climate feels more temperate compared to the peak summer months. With average temperatures settling around 21°C (71°F), visitors can enjoy pleasant days with occasional light rain, totaling about 22 mm of precipitation over roughly 8 days—a welcome shift from the dry summer heat. The 81% humidity adds a touch of warmth, creating an inviting atmosphere perfect for exploring this beautiful coastal area. For a deeper dive into Santa Cruz's weather patterns, check out the detailed insights at Santa Cruz Climate.