Last updated: August 21, 2025
September in Arraial do Cabo, Brazil, welcomes visitors with a delightful average temperature of 22°C (72°F), making it an inviting month for exploration. Daily highs can reach up to 26°C (78°F), while cooler evenings drop to about 19°C (67°F). However, travelers should be prepared for a bit of moisture, as the region experiences approximately 41 mm (1.6 in) of rain over 5 days, contributing to a humidity level of around 75%. This balance of warmth and occasional showers creates a lush, vibrant landscape, perfect for enjoying the natural beauty of this coastal paradise.
In September, Arraial do Cabo begins to gently transition from the cooler winter months into the warmth of spring. With minimum temperatures around 19°C (67°F) and highs reaching 26°C (78°F), the weather is pleasantly mild, making it an ideal time for outdoor activities. The average temperature hovers at 22°C (72°F), offering a comfortable atmosphere for both locals and visitors. As the month progresses, one can expect gradually rising temperatures that hint at the inviting summer ahead, while still enjoying the lingering freshness of early spring. This balance creates a perfect backdrop to explore the stunning beaches and vibrant marine life that the region is famed for.
September in Arraial do Cabo brings a gentle reprieve from the heavier rains of previous months, featuring 41 mm (1.6 in) of precipitation spread over just 5 days. This marks a continuation of the transitional pattern leading into the wetter months of October and November, where rainfall begins to increase significantly. The relatively light precipitation in September mirrors the dry spell of July, suggesting a trend of drier conditions lingering before the seasonal shift. As the days shorten and temperatures cool, this month offers a perfect opportunity for visitors to enjoy the picturesque beaches and vibrant natural beauty, all while experiencing the pleasant interlude between the dry and wet seasons.
As the seasons transition in Arraial do Cabo, Brazil, September brings a notable dip in humidity, maintaining a steady level of 75%. This marks a continuation of a downward trend from the peak humidity levels observed during the start of the year. Following the more humid months of January through August, where humidity consistently hovered above 75%, September signals a shift towards drier conditions that will persist into the following months. With this reduction, visitors can enjoy the stunning coastal scenery in a more comfortable atmosphere, as the ocean breezes complement the pleasant temperatures of early spring. This seasonal change not only enhances the region's charm but also makes it an ideal time for outdoor activities and exploration.
In September, Arraial do Cabo experiences a UV Index of 11, categorizing the exposure as extreme, with a burn time of just 10 minutes. This indicates a noticeable consistency in high UV levels during this time of year, paralleling the trend from the preceding months and leading into the more intense levels seen in October and November. Notably, the UV Index fluctuates, peaking at a staggering 16 in January before tapering slightly in the middle of the year; however, it remains significantly high throughout. Visitors and locals alike should remain vigilant, especially during September, when sun protection is crucial. For more detailed information, check out the Arraial do Cabo UV Index.
UV Risk Categories
September in Arraial do Cabo, Brazil, shines brightly with 305 hours of sunshine, making it one of the sunniest months of the year. This delightful weather is a continuation of a summer trend, where sunlight steadily accumulates from March’s peak of 324 hours down to a consistent rhythm through the autumn months. After enjoying the vibrancy of August with its 291 hours, September offers a warm embrace, inviting both residents and visitors to bask in its golden rays. As the year progresses, sunshine hours gradually fluctuate, culminating in the 336 hours of December, but September stands out as a perfect transition point, harmonizing warmth and the anticipation of the year’s end.
In September, Arraial do Cabo experiences a 48% chance of sunny weather, marking a slight dip from the vibrant summer months. This month typically sees a transition into the wetter season, as the sun's presence gradually diminishes after the peak of July and August, which boast 64% and 60% chances, respectively. As the year progresses towards October, the likelihood of sunshine continues to decline, with a projected 24% chance. Therefore, while September offers a fair chance of bright days, travelers should be mindful that the sunny spells may become less frequent as the month unfolds.
As September arrives in Arraial do Cabo, Brazil, daylight begins to settle into a rhythm, offering 11 hours of sunlight. This marks a noticeable transition from the peak of summer, where January boasted a generous 13 hours. Throughout the year, daylight gradually tapers down in the cooler months, reaching a low of 10 hours in June and July. However, as spring approaches, the days gradually lengthen again, hinting at the return of warmer months ahead. The consistent 11 hours in September signals a comforting balance before the daylight starts to stretch out further, inviting residents and visitors alike to savor the beauty of early spring.
In September, Arraial do Cabo experiences a delightful blend of warm temperatures and a refreshing breeze, with an average wind speed of 7.1 m/s (16 mph). As summer winds down, this autumn month continues the trend established in August, which recorded the highest winds of the year. While September's gusts are slightly less fierce, they still provide a pleasant atmosphere for outdoor activities. The transition from winter to spring is evident in the gradual increase in wind speed throughout the month, creating a vibrant ambience perfect for beachgoers and adventurers alike. Looking ahead, wind speeds are expected to taper off into October, making September an ideal time to savor the invigorating winds of Arraial do Cabo.
Weather in Arraial do Cabo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Arraial do Cabo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures in Arraial do Cabo typically range from a mild 19°C (67°F) to a comfortable maximum of 26°C (78°F), with an average of 22°C (72°F). The month sees about 41 mm (1.6 in) of precipitation over approximately 5 days, accompanied by a humidity level of 75%. Conversely, January presents slightly warmer conditions, with minimum temperatures around 21°C (71°F) and maximums reaching 28°C (83°F), averaging 25°C (77°F). Rainfall is minimal, at around 38 mm (1.5 in) over just 4 days, but the humidity increases to 85%. For a detailed view of what to expect this January, check Arraial do Cabo weather in January.
September and February present distinct weather patterns. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 26°C (78°F) with an average of 22°C (72°F). The month experiences light rainfall, totaling 41 mm (1.6 in) over about 5 days, accompanied by a humidity level of 75%. In contrast, February is warmer, with minimum temperatures of 21°C (70°F) and maximum temperatures reaching 29°C (84°F), averaging 25°C (77°F). This month experiences more precipitation, totaling 77 mm (3.0 in) over approximately 9 days, and higher humidity at 86%. For more details about the weather in February, you can visit Arraial do Cabo weather in February.
September and March showcase distinct weather patterns. In September, temperatures range from a mild minimum of 19°C (67°F) to a comfortable maximum of 26°C (78°F), with an average of 22°C (72°F). Precipitation is relatively low at 41 mm (1.6 in) over about 5 days, and humidity sits at around 75%. In contrast, March experiences warmer temperatures, with a minimum of 22°C (72°F) and a peak of 29°C (84°F), averaging 25°C (78°F). The rainfall is significantly higher at 126 mm (5.0 in), occurring over 11 days, with humidity rising to 84%. For more detailed information, you can explore Arraial do Cabo weather in March.
When comparing the weather in September and April, April tends to be slightly warmer, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 28°C (83°F), compared to September's more moderate range of 19°C (67°F) to 26°C (78°F). Additionally, April experiences higher precipitation levels, with 51 mm (2.0 in) falling over 12 days, whereas September sees 41 mm (1.6 in) spread across just 5 days. The humidity is also higher in April at 82%, compared to September's 75%. Overall, April has warmer temperatures and wetter conditions, making it a more humid month. For more detailed information, you can check Arraial do Cabo weather in April.
When comparing the weather in September and May, both months feature similar minimum temperatures, averaging around 19°C (67°F), but May tends to be slightly warmer overall with an average temperature of 23°C (74°F) compared to September's 22°C (72°F). The maximum temperatures are also marginally higher in May, reaching up to 27°C (82°F), while September peaks at 26°C (78°F). However, May experiences more rainfall, with 73 mm (2.9 in) of precipitation over 9 days, versus September's lighter 41 mm (1.6 in) spread across 5 days. Additionally, the humidity is a bit higher in May at 80%, compared to September's 75%. For more detailed insights on May weather, you can visit Arraial do Cabo weather in May.
In comparing the weather of September and June, both months feature similar average temperatures, ranging from a minimum of 19°C (67°F) to an average of 22°C (72°F), with a maximum of 26°C (78°F) in September and 27°C (80°F) in June. However, June tends to be slightly wetter, with precipitation occurring over 8 days compared to September's 5 days, even though the total precipitation for both months is the same at 41 mm (1.6 in). Additionally, humidity levels are slightly higher in June at 78%, compared to September’s 75%. For more specifics on June weather, you can visit Arraial do Cabo weather in June.
In comparing the weather between September and July, we find that September experiences slightly warmer temperatures, with a minimum of 19°C (67°F) and an average of 22°C (72°F), while July has a minimum of 17°C (63°F) and an average of 21°C (71°F). Both months share a maximum temperature of 26°C (79°F), but September sees a bit more precipitation, totaling 41 mm (1.6 in) over five days, compared to July's 27 mm (1.1 in) over six days. Humidity levels are relatively similar, with September at 75% and July slightly higher at 77%. For more detailed insights into July weather, check out Arraial do Cabo weather in July.
In comparing the weather of September and August, it is evident that September offers slightly warmer temperatures, with an average of 22°C (72°F) compared to August's average of 21°C (70°F). Both months experience maximum temperatures that reach up to 26°C (78°F), but September has a higher minimum temperature at 19°C (67°F) versus 17°C (63°F) in August. Precipitation levels are also notable; September receives 41 mm (1.6 in) over just 5 days, while August has slightly more rainfall at 50 mm (2.0 in) spread over 9 days. Humidity remains consistent at 75% for both months. For those interested in exploring August's weather specifics, detailed information can be found here: Arraial do Cabo weather in August.
In September, the weather in Arraial do Cabo features a comfortable range of temperatures with a minimum of 19°C (67°F), an average of 22°C (72°F), and a maximum of 26°C (78°F). The month experiences relatively low precipitation, totaling 41 mm (1.6 in) over just 5 days, along with a humidity level of 75%.
In October, temperatures remain similar, with a minimum of 18°C (64°F), an average of 22°C (73°F), and a maximum of 26°C (79°F). However, October sees an increase in rainfall, with total precipitation rising to 67 mm (2.6 in) spread across 11 days, while humidity remains slightly lower at 74%. For more detailed insights on October weather, you can visit Arraial do Cabo weather in October.
September and November exhibit subtly different weather patterns in terms of temperature and precipitation. In September, temperatures range from a minimum of 19°C (67°F) to a maximum of 26°C (78°F), with an average of 22°C (72°F) and relatively low precipitation of 41 mm (1.6 in) over just 5 days. Conversely, November experiences slightly warmer temperatures, with a minimum of 20°C (68°F) and a maximum of 27°C (80°F), averaging 23°C (73°F). However, this month also brings increased rainfall, accumulating 109 mm (4.3 in) over 13 days, resulting in higher humidity at 79%. For more detailed information, you can visit Arraial do Cabo weather in November.
In September, the weather is typically warm with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 26°C (78°F). With 41 mm (1.6 in) of precipitation over about five days, the humidity hovers around 75%. In contrast, December brings slightly warmer conditions, with temperatures varying from 21°C (70°F) to 27°C (80°F), and average humidity increases to 81%. However, December also sees a notable increase in rainfall, totaling 101 mm (4.0 in) over roughly ten days. For a detailed look at what to expect, check out Arraial do Cabo weather in December.
As September rolls in, Arraial do Cabo experiences a delightful transition in weather, characterized by mild temperatures and moderate humidity. Unlike the sweltering heat of summer, September offers a refreshing average temperature of 22°C, making it an ideal month for outdoor activities. With just a hint of rain, totaling around 41 mm, and only a few precipitation days, visitors can enjoy the beauty of the region's stunning beaches without the usual downpours typical of the rainy season. Overall, September’s climate strikes a perfect balance, setting it apart from both the hot summer months and the cooler winter, making it a charming time to explore the natural wonders of this coastal paradise. For more detailed insights, check out the Arraial do Cabo Climate page.