Last updated: August 21, 2025
In August, São Luís, Brazil experiences a warm tropical climate, characterized by a maximum temperature reaching 31°C (88°F) and an average temperature around 27°C (82°F). The minimum temperature stays comfortably at 24°C (76°F), making it ideal for outdoor activities. While the city enjoys plenty of sunshine, it also sees 37 mm (1.5 in) of precipitation spread across about 11 days, resulting in moderate humidity levels of 55%. This blend of warmth and moisture creates a vibrant atmosphere, perfect for enjoying the rich culture and stunning landscapes São Luís has to offer.
In August, the temperatures in São Luís, Brazil, showcase a subtle warmth typical of this vibrant coastal city. With a minimum of 24°C (76°F) and a comfortable average of 27°C (82°F), August offers a delightful tropical atmosphere. The maximum reaches about 31°C (88°F), slightly lower than the highs seen in preceding months, indicating a gentle shift as the region approaches the end of winter. This consistency in mild temperatures throughout the month makes August a wonderful time to enjoy outdoor activities and immerse oneself in the local culture, all the while basking in the warmth of a classic Brazilian summer.
In August, São Luís, Brazil, experiences a significant drop in precipitation, with only 37 mm (1.5 in) of rain over a mere 11 days. This marks a stark contrast to the wetter months earlier in the year, where rainfall often exceeds 400 mm and can stretch over 30 days. As the dry season approaches, August signals a shift in the climate, leading into the even drier months of September and October. This trend highlights a gradual decline in humidity and rainfall, offering residents a brief respite and an opportunity to enjoy the sun-drenched days that characterize late winter in this vibrant coastal city.
In August, São Luís, Brazil experiences a notable dip in humidity, falling to 55%, the lowest level of the year. This represents a significant transition from the high humidity levels observed in the earlier months, where figures hovered around 90% in January through April. As the dry season sets in, August marks a refreshing change compared to the preceding months, notably continuing a downward trend that began in July. This reduction in humidity not only provides a respite from the intense tropical climate but also sets the stage for September's even lower levels, indicating a shift towards drier conditions that characterize the latter part of the year. As the year progresses, the fluctuating humidity levels reflect São Luís's dynamic weather patterns, showcasing the region's unique climatic allure.
In August, Sao Luis, Brazil, experiences a UV Index of 13, falling within the extreme exposure category with a burn time of just 10 minutes. This reading highlights the region's consistently high UV levels throughout the year, with only slight fluctuations observed. From January to July, the index averages between 11 and 16, demonstrating a pronounced intensity of solar radiation. As the year progresses into the transitional months, that intensity stabilizes around 13, suggesting that residents and visitors should remain vigilant against sun exposure. Whether you're soaking up the sun or exploring the vibrant culture, understanding the UV Index is essential for enjoying the tropical climate safely. For more information, check the detailed Sao Luis UV Index.
UV Risk Categories
Sao Luis basks in incredible sunshine during the month of August, boasting an impressive 349 hours of sunlight, continuing a trend of increasing daylight that peaks in mid-year. Following the steady climb from 343 hours in July, August marks a slight escalation in brightness, further enriching the vibrant atmosphere of this Brazilian gem. As the year progresses, the sun’s presence remains generous, with October just edging ahead at 350 hours. In contrast, the earlier months of the year, such as January with 237 hours and February with 238 hours, reveal a remarkable increase in luminosity as the seasons transition. This gradual ascent in sunshine hours contributes not only to the natural beauty of Sao Luis but also to its lively culture and outdoor activities, making August a perfect time to soak in the sun's warmth.
In Sao Luis, Brazil, the month of August marks a notable shift in sunny prospects, boasting a 66% chance of sunshine. This increase is part of a broader trend observed throughout the year, where the likelihood of clear skies steadily climbs from a modest 18% in January to a peak in August. Following July's already impressive 54%, August emerges as a standout month for sun-seekers. As summer transitions into spring, the consistent rise in sunny weather continues through September, underscoring a vibrant pattern of warmth that characterizes winter's end in this coastal haven. Whether you’re planning outdoor adventures or simply soaking up the sun, August offers a golden opportunity for enjoying Sao Luis’s radiant beauty.
In Sao Luis, Brazil, the rhythm of daylight showcases a captivating consistency throughout the year. From January to April, the city enjoys a steady 12 hours of sunlight daily, setting a sun-soaked tone. As the calendar flips to May, daylight decreases slightly to 11 hours, continuing through the cooler months of June and July. However, August brings a delightful shift with daylight stretching back to 12 hours, mirroring the brightness of the earlier months. This pattern remains constant until December, where the city once again basks in an invigorating 12 hours of daylight, creating an enchanting backdrop for both residents and visitors alike. The cyclical nature of Sao Luis' daylight hours not only highlights the region's tropical allure but also reinforces the predictable charm of its climate year-round.
In August, São Luís, Brazil, experiences a noticeable shift in the wind, with an average speed of 4.8 m/s (11 mph), marking a return to a breezier climate after the calmer months of mid-year. This uptick in wind intensity contrasts sharply with the lower speeds seen in May and April, where gusts dropped to as low as 3.3 m/s (7 mph). The month heralds the onset of increased breeziness, as September follows with even stronger winds averaging 6.0 m/s (13 mph). This progression illustrates a warming trend towards the windy months, creating a vibrant atmosphere perfect for outdoor activities, making August an enticing time for residents and visitors alike to enjoy São Luís’ coastal charm.
Weather in Sao Luis varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sao Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
In August, the weather in Sao Luis features pleasantly warm temperatures, ranging from a minimum of 24°C (76°F) to a maximum of 31°C (88°F), with an average of 27°C (82°F). The month sees relatively low precipitation, totaling 37 mm (1.5 in) over about 11 days, and humidity levels are moderate at around 55%. In contrast, January experiences a similar minimum temperature of 24°C (75°F), but it is generally cooler at a maximum of 29°C (85°F) and an average of 27°C (80°F). However, January is significantly wetter, with 217 mm (8.5 in) of rain spread across approximately 25 days, contributing to high humidity levels of 89%. For more detailed information, check out Sao Luis weather in January.
August and February in this region showcase notable differences in weather patterns. August typically experiences warmer temperatures, with an average of 27°C (82°F) and a maximum of 31°C (88°F), accompanied by relatively low precipitation of 37 mm (1.5 in) over about 11 days. In contrast, February remains cooler, with an average temperature of 26°C (80°F) and a maximum of 29°C (85°F), but sees a dramatic increase in rainfall, totaling 427 mm (16.8 in) spread across 27 days. Additionally, February's humidity peaks at 90%, compared to August's more moderate 55%. For more detailed information, you can check Sao Luis weather in February.
In comparing the weather of August and March, August showcases a warmer climate with average temperatures ranging from 24°C (76°F) to 31°C (88°F) and relatively low precipitation at 37 mm (1.5 in) over 11 days, resulting in a humidity level of 55%. In contrast, March experiences slightly cooler temperatures, with averages between 24°C (75°F) and 29°C (85°F), but it significantly increases in rainfall, receiving 483 mm (19.0 in) across 30 days and resulting in a much higher humidity of 90%. For more detailed information, visit Sao Luis weather in March.
In comparing the weather of August and April, both months exhibit warm temperatures, with average highs around 27°C (82°F) and minimal differences in temperature extremes. However, while August sees a relatively dry climate with only 37 mm of precipitation over 11 days and a moderate humidity level of 55%, April experiences a significantly wetter season, receiving 469 mm of rainfall over 29 days and high humidity of 92%. For a detailed overview of April's weather conditions, you can check out Sao Luis weather in April.
The weather in August and May exhibits some notable differences despite having similar average temperatures. In August, the minimum temperature is slightly higher at 24°C (76°F) compared to May's 24°C (75°F), while the maximum temperature in August reaches 31°C (88°F), just above May's 30°C (87°F). However, May experiences significantly more precipitation, with 298 mm (11.7 in) over 27 days, contrasted with August's 37 mm (1.5 in) over just 11 days. Additionally, humidity levels are much higher in May at 89%, compared to August's 55%. For more detailed insights on May weather, check out Sao Luis weather in May.
In comparing the weather of June and August, both months feature similar temperature ranges, with minimums around 24°C (75-76°F) and maximums reaching 31°C (87-88°F). However, June is characterized by significantly higher precipitation, with 161 mm (6.4 in) falling over 26 days, compared to August's much lighter total of 37 mm (1.5 in) across 11 days. Additionally, humidity levels are notably higher in June at 79%, while August offers a more comfortable average of 55%. For more detailed information, you can check out Sao Luis weather in June.
When comparing the weather in August to July, both months show similar temperature patterns, with minimum temperatures around 24°C (75-76°F), average temperatures of 27°C (81-82°F), and maximum temperatures peaking at 31°C (88-89°F). However, August experiences significantly less rainfall, with only 37 mm (1.5 in) of precipitation over 11 days, compared to July's 107 mm (4.2 in) over 22 days. Additionally, humidity levels drop in August to 55%, down from 64% in July, making August generally more comfortable. For a detailed look at July's weather, you can visit Sao Luis weather in July.
August and September in Sao Luis exhibit some similarities in temperature, with both months maintaining an average of 27°C (82°F) and a maximum of 31°C (88°F). However, August tends to be slightly more humid at 55%, whereas September experiences a slight decrease in humidity to 51%. Precipitation levels also differ significantly, with August receiving 37 mm (1.5 in) of rain over 11 days, compared to September's lighter rainfall of 21 mm (0.8 in) over just 5 days. For more detailed information on the weather in September, you can visit Sao Luis weather in September.
In comparing the weather between August and October, both months exhibit warm averages, with August having a minimum temperature of 24°C (76°F) and a maximum of 31°C (88°F), while October shows only a slight increase in the minimum to 25°C (78°F) and a maximum that is marginally lower at 30°C (87°F). Precipitation levels also differ, with August experiencing 37 mm (1.5 in) across 11 days of rain compared to October's 29 mm (1.1 in) over 8 days. Additionally, humidity remains relatively stable, slightly lower in October at 53% compared to 55% in August. For more specific weather insights, you can refer to Sao Luis weather in October.
In August, Sao Luis experiences warm temperatures with a minimum of 24°C (76°F) and an average of 27°C (82°F), peaking at a maximum of 31°C (88°F). The month is characterized by relatively low precipitation at 37 mm (1.5 in) over 11 days, with humidity levels around 55%. In contrast, November sees slightly warmer temperatures, with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum of 30°C (86°F). However, November also brings increased precipitation at 73 mm (2.9 in) across 12 days, along with higher humidity levels at 60%. For more details, you can explore Sao Luis weather in November.
In August, the weather in Sao Luis features warm temperatures with a minimum of 24°C (76°F), an average of 27°C (82°F), and a maximum of 31°C (88°F). The month registers relatively low precipitation at 37 mm (1.5 in) over 11 days, accompanied by a moderate humidity level of 55%. In contrast, December maintains similar temperature averages, with a minimum of 24°C (75°F), an average of 27°C (82°F), and a slightly lower maximum of 30°C (87°F). However, the month experiences significantly higher rainfall, totaling 117 mm (4.6 in) over 23 days, and elevated humidity at 78%. For more details, you can visit Sao Luis weather in December.
In August, Sao Luis experiences a delightful shift in weather, characterized by warm temperatures that set the stage for outdoor adventures. With daily averages hovering around a comfortable 27°C (82°F), this month tends to be slightly less humid compared to the peak summer months, providing a refreshing respite. However, occasional rainfall is still present, with about 11 days experiencing precipitation, adding a touch of tropical vibrance to the landscape. While the temperature remains warm, it offers a pleasant balance, making August an ideal time for visitors to explore the city's rich culture and stunning coastline. For more detailed insights into the region's weather patterns, check out Sao Luis Climate.