Last updated: August 21, 2025
March in São Luís, Brazil presents a wonderfully warm and humid climate, perfect for those who enjoy tropical conditions. With maximum temperatures reaching up to 29°C (85°F) and an average of 26°C (80°F), the weather remains consistently pleasant. However, the month is characterized by significant precipitation, totaling 483 mm (19.0 in) over 30 days, resulting in a lush, vibrant landscape. The humidity level hovers around an impressive 90%, contributing to the feeling of being enveloped in a tropical embrace. While the frequent rainfall may pose a challenge for outdoor activities, it also nourishes the region’s rich biodiversity, making March a uniquely captivating experience in São Luís.
In March, São Luís, Brazil continues to bask in warm tropical temperatures that are characteristic of its coastal climate. The month features a min temperature of 24°C (75°F) and an average of 26°C (80°F), peaking at a comfortable 29°C (85°F). This stability reflects a consistent pattern seen since January, with minimal fluctuations across the early months of the year. As the seasons progress, the warmth intensifies, yet March remains pleasantly mild, making it an ideal time to explore the vibrant culture and stunning landscapes that define this coastal gem. Visitors can expect balmy days and mild evenings, perfectly suited for outdoor adventures and enjoying the region's picturesque beaches.
March marks a significant peak in precipitation for São Luís, Brazil, with an impressive 483 mm (19.0 in) of rainfall accumulated over the entire month. This heavy downpour accompanies a notable increase in precipitation days, as March experiences rain on all 30 days, setting it apart from the preceding months. Following January's 217 mm (8.5 in) and February's soaring 427 mm (16.8 in), the city enters the wettest period of the year, highlighting the transition into its rainy season. As the skies open up, the lush landscapes thrive, reflecting the essential role of this abundant rainfall in supporting the region's biodiversity and agriculture, before the downpour gradually tapers off in April with 469 mm (18.5 in) and fewer rainy days. The stark contrast between March's deluge and the drier months ahead emphasizes the dynamic climatic patterns that characterize São Luís throughout the year.
In March, Sao Luis, Brazil, experiences a humidity level of 90%, maintaining the high moisture trend established in the previous months of January and February. This consistent humidity level signifies the region's tropical climate, characterized by warm, humid conditions early in the year. As the month transitions into April, humidity rises slightly to 92%, marking the peak of the wet season. Following this, a gradual decline occurs, with the humidity steadily decreasing throughout the dryer months of June and July, ultimately hitting a low of 64% in July. This trend highlights the contrasting climate that Sao Luis undergoes, shifting from a humid, tropical environment to a more temperate atmosphere as the year progresses.
In March, Sao Luis, Brazil experiences a notable spike in the UV Index, reaching a striking 16, categorized as extreme. This increase marks the highest level observed in the region during the year, with a consistently brisk burn time of just 10 minutes across the months. Following January and February at a steady 14, the trend suggests a gradual intensification of sunlight as the summer progresses. Although April witnesses a slight dip to 15, the prevailing extreme conditions remain through the months that follow. For residents and visitors alike, it's crucial to remain vigilant about sun protection during this period. For more detailed information on the UV Index throughout the year, visit Sao Luis UV Index.
UV Risk Categories
March in São Luís, Brazil, brings a noticeable uptick in sunshine, with the city basking in 259 hours of radiant daylight. This increase not only marks a vibrant transition from the slightly cooler months of January and February, but it also sets the stage for a remarkable surge in sunlight as the year progresses. Following March, the sun's embrace continues to strengthen, peaking in the mid-year with up to 343 hours in July. This trend highlights the region's celebration of light, culminating in the peak summer months where residents and visitors alike can fully enjoy the sun-drenched days characteristic of this delightful coastal city.
In March, the likelihood of sunny weather in São Luís, Brazil dips to a mere 11%, marking one of the cloudier months in the region. This trend is particularly noticeable as the sun makes a gradual return following the peak rainy season, where January and February show slightly higher chances of sun at 18% and 22%, respectively. As the months progress into April and beyond, the chances of sunshine significantly increase, suggesting that early spring is a transitional phase before the sunnier days of late spring and summer take hold. By June, the likelihood of sunny weather jumps to 51%, illustrating a clear pattern of increasing sunlight as the year unfolds in this lively coastal city.
In Sao Luis, Brazil, the rhythm of daylight remains largely steady throughout the year, with March continuing the trend of 12 hours of daylight that begins in January and endures through April. This consistency creates a vibrant atmosphere, ideal for outdoor activities and exploration. As the calendar shifts into May, a gradual decrease in daylight begins, bringing 11 hours that persists until July. However, the approach of August signals a return to the familiar 12-hour daylight pattern, lasting through the end of the year. This predictable cycle not only marks the passage of time but also invites residents and visitors alike to enjoy the splendid tropical environment of this coastal gem.
As March unfolds in São Luís, Brazil, the winds begin to whisper a calming narrative with an average speed of 3.9 m/s (9 mph), marking a subtle decline from the breezy February. This gentle breeze sets the tone for the month, creating a serene atmosphere that contrasts with the stronger gusts of September and October, which peak at 6.0 m/s (13 mph). Interestingly, the wind speed shows a tendency to rise as the year progresses, especially leading into the vibrant summer months. By August, the winds pick up again to 4.8 m/s (11 mph), signaling a dance of refreshing air and warmth that sets the stage for São Luís' vibrant coastal charm. As the seasons shift, this ebb and flow of wind speeds tell a captivating story of nature's rhythm, inviting both locals and visitors to revel in the changing coastal breezes.
Weather in Sao Luis varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Sao Luis, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison, the weather in March tends to be slightly cooler than in January, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F). While both months experience similar temperature ranges, March receives significantly more rainfall, totaling 483 mm (19.0 in) over 30 days, compared to January's 217 mm (8.5 in) across 25 days. Humidity levels remain comparable, with March at 90% and January at 89%. For more details on January's climate, you can check Sao Luis weather in January.
March and February exhibit similar temperatures, with both months featuring a minimum of 23-24°C (73-75°F), an average of 26°C (80°F), and a maximum of 29°C (85°F). However, March experiences higher rainfall, totaling 483 mm (19.0 in) over 30 days compared to February's 427 mm (16.8 in) over 27 days. Interestingly, both months share a high humidity level of 90%, contributing to the sultry conditions typical of this region. For a detailed overview of February's climate, you can visit Sao Luis weather in February.
In March, the weather features a warm temperature range with a minimum of 24°C (75°F), averaging 26°C (80°F), and peaking at 29°C (85°F). The month is characterized by substantial rainfall, with a total of 483 mm (19.0 in) spread over 30 days and high humidity at 90%. In comparison, April sees a slight increase in average temperature, with the minimum remaining at 24°C (76°F), an average of 27°C (80°F), and a maximum of 30°C (86°F). Precipitation decreases slightly to 469 mm (18.5 in) over 29 days, accompanied by a marginal rise in humidity at 92%. For a deeper look at the weather specifics, you can check the detailed forecast for Sao Luis weather in April.
In March, the weather is characterized by warm temperatures, with a minimum of 24°C (75°F), an average of 26°C (80°F), and a maximum of 29°C (85°F). However, this month is also marked by significant rainfall, accumulating 483 mm (19.0 in) over 30 days, coupled with high humidity levels at 90%. In contrast, May sees slightly warmer temperatures, ranging from a minimum of 24°C (75°F) to a maximum of 30°C (87°F) with an average of 27°C (81°F). May experiences less precipitation, totaling 298 mm (11.7 in) over 27 days, and maintains a similar humidity level of 89%. For more specific details on May weather in Sao Luis, you can visit Sao Luis weather in May.
March and June in Sao Luis exhibit notable differences in weather patterns. March typically sees temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F) with an average of 26°C (80°F). The month is characterized by high humidity at 90% and significant precipitation, totaling 483 mm (19.0 in) over 30 days. In contrast, June experiences slightly warmer average temperatures, with a minimum of 24°C (75°F), an average of 27°C (81°F), and a maximum of 31°C (87°F). Precipitation in June is considerably lower, at 161 mm (6.4 in) spread over 26 days, and humidity drops to 79%. For a more detailed look at June weather, you can visit Sao Luis weather in June.
In March, the weather in Sao Luis is characterized by high humidity at 90% and substantial rainfall, totaling 483 mm over 30 days, with temperatures averaging around 26°C (80°F) and peaking at 29°C (85°F). In contrast, July experiences a slight increase in average temperature to 27°C (81°F), with maximum temperatures reaching 31°C (89°F), but significantly less precipitation at 107 mm over 22 days, resulting in a much drier atmosphere with humidity dropping to 64%. For more detailed insights into July's weather, you can visit Sao Luis weather in July.
March and August present distinctly different weather patterns. In March, the temperatures are generally warm with a minimum of 24°C (75°F), averaging around 26°C (80°F), and peaking at 29°C (85°F). However, this month is also characterized by significant rainfall, receiving approximately 483 mm (19.0 in) over 30 days, coupled with high humidity at 90%. In contrast, by August, the temperatures increase slightly, with a minimum of 24°C (76°F), an average of 27°C (82°F), and a maximum of 31°C (88°F). Rainfall drastically diminishes to just 37 mm (1.5 in) over 11 days, resulting in a more comfortable humidity level of 55%. This transition largely highlights the shift from a wet to a dry season. For more details, check out Sao Luis weather in August.
March and September present contrasting weather patterns. In March, temperatures range from a minimum of 24°C (75°F) to a maximum of 29°C (85°F), with an average of 26°C (80°F). This month is characterized by high precipitation, totaling 483 mm (19.0 in) over 30 days and high humidity levels at 90%. In contrast, September sees slightly warmer temperatures, with a minimum of 26°C (78°F) and a maximum of 31°C (88°F), averaging around 27°C (82°F). However, rainfall is significantly lower, with only 21 mm (0.8 in) recorded over just 5 days, and humidity drops to a more moderate 51%. This shift reflects a transition from the wet season in March to the drier conditions typical of September. For more details, check out Sao Luis weather in September.
In comparing the weather between March and October, March is characterized by higher levels of precipitation and humidity. With temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F) and an average of 26°C (80°F), March experiences significant rainfall totaling 483 mm (19.0 in) over 30 days, accompanied by high humidity at 90%. In contrast, October sees slightly warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 30°C (87°F), and a more comfortable average of 27°C (82°F). Rainfall dramatically decreases to just 29 mm (1.1 in) over 8 days, resulting in a much lower humidity level of 53%. For more details on October weather, visit Sao Luis weather in October.
March and November exhibit distinct weather patterns. In March, temperatures range from a minimum of 24°C (75°F) to a maximum of 29°C (85°F), accompanied by high humidity at 90% and significant precipitation of 483 mm (19.0 in) over 30 days. Conversely, November features slightly higher temperatures, with a minimum of 25°C (77°F) and a maximum of 30°C (86°F), but significantly less rainfall at 73 mm (2.9 in) over just 12 days and lower humidity at 60%. This stark difference highlights March as a wetter and more humid month compared to the drier conditions of November. For more details, you can check Sao Luis weather in November.
In comparing the weather between March and December, both months register warm temperatures, with March featuring a minimum of 24°C (75°F) and an average of 26°C (80°F), while December shows a slightly higher average of 27°C (82°F). However, March experiences significantly more rainfall, with 483 mm (19.0 in) spread over 30 days, compared to December's much lower 117 mm (4.6 in) over 23 days. Additionally, March has higher humidity levels at 90%, while December's humidity is more comfortable at 78%. For those looking for details on December's climate, you can visit Sao Luis weather in December.
March in São Luís is characterized by its warm and humid conditions, setting it apart from the cooler months that typically precede it. With an average temperature hovering around a comfortable 26°C, it offers a pleasant respite for locals and tourists alike. However, the month is also marked by a significant rainfall, accumulating an impressive 483 mm over 30 days, creating a lush and vibrant atmosphere. This high humidity level, often reaching 90%, can add to the tropical feel, making it a unique experience compared to the drier periods in other months. For those looking to understand the year-round climate, more details can be found at Sao Luis Climate.