March Weather in Santos, Brazil

Last updated: August 21, 2025

March in Santos, Brazil, is characterized by warm temperatures and high humidity. The maximum reaches a sweltering 32°C (90°F), while the average temperature hovers around a comfortable 25°C (77°F), and it rarely dips below 21°C (69°F). However, this tropical paradise experiences significant rainfall with approximately 229 mm (9.0 in) of precipitation spread over 20 days, making it crucial for visitors to prepare for wet weather. With humidity levels at a sticky 86%, March offers a vibrant atmosphere perfect for exploring the lush surroundings, though one should be ready for sudden showers.

March Temperature in Santos

In March, Santos, Brazil, welcomes the arrival of autumn with pleasant temperatures, showcasing a minimum of 21°C (69°F) and a comfortable average of 25°C (77°F). This month sees a slight dip from February’s warmth and a maximum of 32°C (90°F), remaining consistent with the preceding months. As the region transitions into cooler weather, these mild conditions create an ideal atmosphere for outdoor activities and beach outings, making it a delightful time to experience the coastal city. The gentle shift in temperature hints at the approaching cooler months while still allowing for plenty of sunshine and warmth, keeping the local charm alive.

March Weather in Santos: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Santos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santos, March typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec787777747170676769717275
Data source: Temperature data for Santos 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.

March Precipitation in Santos

March in Santos, Brazil, continues the trend of high precipitation characteristic of the earlier months, receiving 229 mm (9.0 in) of rainfall over 20 days. This substantial amount, slightly less than February’s peak of 249 mm (9.8 in), still marks March as one of the wetter months in the region. Following a pattern established in January and February, this month’s rainfall contributes to the overall lushness of the coastal landscape. As the season progresses, the trend reveals a gradual decline in both precipitation amounts and rainy days, leading into the drier months of April and May, which promise a shift in weather patterns.

March Precipitation Trends in Santos

The chart displays monthly precipitation patterns in Santos, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Santos, March typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec18424922913913011781134102183147153
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Santos

In March, Santos, Brazil experiences a humidity level of 86%, continuing the trend of gradually decreasing humidity that begins in January with a high of 89%. As the year progresses, humidity levels steadily drop, reaching a low of 76% in October before slightly rising again towards the end of the year. This consistent decline through the first half of the year, particularly evident in March as it dips from the previous months, creates a more comfortable climate that can be increasingly appreciated as the dry season approaches. The cyclical rise in humidity during November and December signals the return of refreshing maritime influences, making the climate in Santos a dynamic experience throughout the year.

March Average Humidity in Santos

This chart illustrates the average monthly humidity levels in Santos, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Santos is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%84%84%82%80%78%78%76%85%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Santos

In March, Santos, Brazil, experiences a robust UV Index of 12, categorized as extreme, similar to the preceding months of January and February. With a consistent burn time of just 10 minutes, it's crucial for residents and visitors to remain vigilant against the sun's intense rays. As the summer transitions towards autumn, the UV levels slightly dip but still pose significant risks, reinforcing the need for proactive sun protection. The trends indicate a gradual decrease from January's peak of 15 to March's 12, yet caution remains key. For a comprehensive understanding of UV exposure in this vibrant coastal city, visit Santos UV Index.

Maximum UV Index Levels in Santos for March

The chart shows the monthly maximum UV Index (UVI) for Santos in March, 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. In March, the maximum UV index in Santos typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141211866911131415
Data source: Santos March 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.

March Sunshine in Santos

March in Santos, Brazil, shines brightly with 298 hours of sunshine, making it one of the sunniest months of the year. Following the already impressive totals of 256 hours in January and 265 hours in February, March marks a noticeable increase, ushering in the beginning of autumn with vibrant days. This trend of plentiful sunshine continues into April, which still enjoys 291 hours. As the year unfolds, this sunny disposition tends to dip slightly with May and June, demonstrating the subtle shifts of the seasons. Overall, March stands out as a remarkable highlight, embodying the warmth and energy of Santos as it transitions into the latter half of the year.

Monthly Sunshine Duration in Santos: March Highlighted

The March sunshine duration represents the total number of hours Santos experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec256h265h298h291h274h243h275h250h274h261h295h317h
Data source: Santos March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Santos During March

As March rolls into Santos, Brazil, the likelihood of enjoying sunny weather stands at a solid 42%, making it a prime month for those seeking a bit of sun. This figure closely mirrors February's 43%, suggesting that the transition from the summer months is still favorably warm and bright. Interestingly, April sees a slight uptick to 49%, indicating that while March remains pleasant, the following month might shine even brighter. Overall, the early months of the year exhibit a trend of increasing sunny days, with July peaking at an impressive 61%. Thus, if you're planning a visit in March, expect a good chance of sun while preparing for the delightful, gradually warming days ahead.

Percentage of Sunny Days in March in Santos

The chart illustrates the percentage of sunny days in Santos throughout the year, with March 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 Santos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%43%42%49%47%40%61%50%37%21%42%42%
Data source: Santos March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Santos in March

In Santos, Brazil, the month of March experiences a daylight duration of 12 hours, reflecting a seamless transition from the longer days of summer into the cooler months. As the year unfolds, daylight gradually decreases, starting from 13 hours in January and tapering to 11 hours in April. This trend continues through the mid-year, where daylight reaches its minimum at 10 hours from May to July. However, the rhythm of nature soon rejuvenates as daylight begins to extend once more in August, regaining 11 hours before returning to 12 hours in October. This cyclical pattern not only enriches the landscape of Santos but also highlights the region's beautiful seasonal changes, offering residents and visitors alike a vibrant experience throughout the year.

Average Daylight Hours in Santos for March

The chart illustrates the variation in daylight duration in Santos throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 24m12h 52m12h 11m11h 29m10h 56m10h 39m10h 48m11h 18m11h 57m12h 39m13h 15m13h 34m
Data source: Santos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Santos

As March settles over Santos, Brazil, the coastal breezes begin to whisper a gentle lullaby, with average wind speeds measuring at 2.6 m/s (6 mph). This slight decrease from February’s 2.7 m/s sets the stage for the transition into the spring months. Following March, the winds embrace a more invigorating rhythm, picking up in April to 3.6 m/s (8 mph), hinting at the energizing gales to come. It’s fascinating to see how the wind patterns evolve, gaining momentum with summer's approach, peaking in October at an invigorating 4.7 m/s (11 mph). Overall, March serves as a serene bridge, inviting residents and visitors alike to savor the calm before nature ramps up its breezy performances in the months ahead.

Average March Wind Speed in Santos

The chart displays monthly wind speed patterns in Santos, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.82.72.6 m/s3.63.33.23.23.93.84.73.73.4
Data source: Santos March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Santos Compares to Other Months

Weather in Santos varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Santos, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparison to January, March experiences a slightly lower average temperature, with March averaging 25°C (77°F) versus January's 26°C (79°F). Both months share similar minimum and maximum temperatures, maintaining a consistent range between 21°C (69°F) and 32°C (90°F). However, March sees significantly higher precipitation levels, with 229 mm (9.0 in) over 20 days, compared to January's 184 mm (7.2 in) across 18 days. Humidity is also slightly lower in March at 86%, while January remains a bit more humid at 89%. For more detailed information, check out Santos weather in January.

March and February exhibit similar warm temperatures, with both months recording a minimum of 21°C (69°F) and an average around 25°C (77°F). However, March has slightly lower maximum temperatures, peaking at 32°C (90°F), compared to February's high of 33°C (91°F). In terms of precipitation, March experiences a decrease to 229 mm (9.0 in) over 20 days, while February sees higher rainfall at 249 mm (9.8 in) over 19 days. Humidity levels are also quite comparable, with March at 86% and February slightly higher at 87%. For more detailed insights, visit Santos weather in February.

In comparing the weather between March and April, March tends to be warmer and wetter. March has minimum temperatures reaching 21°C (69°F) and averaging around 25°C (77°F), with maximums hitting 32°C (90°F). It also sees a significant amount of precipitation at 229 mm (9.0 in) over 20 days, resulting in high humidity levels at 86%. In contrast, April features slightly cooler temperatures, with minimums around 19°C (66°F) and an average of 23°C (74°F), while maximums are slightly lower at 31°C (89°F). Precipitation drops to 139 mm (5.5 in) over 15 days, and humidity decreases marginally to 84%. For more detailed insights, you can check this link: Santos weather in April.

March and May offer contrasting weather experiences, with March typically warmer and wetter. In March, temperatures range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average of 25°C (77°F). This month sees significant rainfall, totaling 229 mm (9.0 in) over 20 days, accompanied by high humidity at 86%. In contrast, May presents a cooler climate, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 29°C (84°F) and an average of 22°C (71°F). It experiences less precipitation, amounting to 130 mm (5.1 in) over just 13 days, and slightly lower humidity at 84%. For more details, visit Santos weather in May.

In March, the weather is generally warmer, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F) and an average of 25°C (77°F). This month also experiences high humidity at 86% and significant precipitation, totaling 229 mm (9.0 in) over approximately 20 days. In contrast, June sees cooler temperatures with a minimum of 15°C (60°F) and a maximum of 30°C (86°F), leading to a lower average temperature of 21°C (70°F). The rainfall in June is also lighter, with only 117 mm (4.6 in) over about 12 days, and the humidity is slightly reduced at 82%. For more details on June weather in Santos, you can refer to Santos weather in June.

When comparing the weather of March and July, distinct differences emerge. March tends to be significantly warmer, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), while July's temperatures are cooler, with an average range of 11°C (53°F) to 30°C (86°F). Additionally, March experiences much higher precipitation, totaling 229 mm (9.0 in) over approximately 20 days, while July sees only 81 mm (3.2 in) spread across about 8 days. The humidity is slightly higher in March at 86%, compared to July’s 80%. For more detailed information, check out Santos weather in July.

March weather tends to be much warmer and more humid compared to August. During March, temperatures range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average of 25°C (77°F). Additionally, March experiences significant rainfall, with 229 mm (9.0 in) of precipitation over about 20 days, leading to high humidity levels at 86%.

In contrast, August offers cooler conditions, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 30°C (87°F), and an average of 19°C (67°F). The month sees considerably less rainfall, with only 133 mm (5.3 in) over approximately 13 days, resulting in lower humidity at 78%. For more detailed information, you can check Santos weather in August.

In March, the weather is warmer, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F) and an average of 25°C (77°F). This month experiences high humidity levels at 86% and significant precipitation of 229 mm (9.0 in) over approximately 20 days. In contrast, September offers a cooler climate, with temperatures ranging from a minimum of 15°C (60°F), an average of 21°C (70°F), and a maximum of 33°C (92°F). Precipitation is noticeably lower at 102 mm (4.0 in) over just 13 days, and humidity also decreases to 78%. For more detailed information, check out Santos weather in September.

March and October present distinct weather patterns, reflecting the transitional phases of the season. In March, temperatures range from a minimum of 21°C (69°F) to a maximum of 32°C (90°F), with an average of 25°C (77°F). This month experiences significant rainfall, accumulating 229 mm (9.0 in) over approximately 20 days, along with high humidity levels of 86%. In contrast, October sees slightly cooler temperatures, with a minimum of 17°C (62°F) and a maximum reaching 34°C (93°F), averaging 22°C (72°F). The precipitation drops to 183 mm (7.2 in), occurring on about 19 days, and humidity levels decrease to 76%. For more detailed information, you can check Santos weather in October.

March and November exhibit relatively warm temperatures, with March generally being slightly hotter. In March, the minimum temperature reaches around 21°C (69°F), with an average of 25°C (77°F) and a maximum of 32°C (90°F). In contrast, November's temperatures are a bit cooler, with a minimum of 17°C (63°F), averaging 22°C (72°F), and a maximum of 31°C (87°F). Additionally, March is marked by higher precipitation, with 229 mm (9.0 in) occurring over 20 days, compared to November’s 147 mm (5.8 in) over 18 days, resulting in an equally humid atmosphere of around 86% in March and 85% in November. For more detailed insights on November weather, check out Santos weather in November.

March and December offer warm temperatures, but March tends to be slightly hotter, with an average temperature of 25°C (77°F) compared to December's 24°C (75°F). The maximum temperatures reach 32°C (90°F) in March, while December peaks at 30°C (87°F). Precipitation is more prevalent in March, with 229 mm (9.0 in) of rain over 20 days, indicating a wetter month compared to December's 153 mm (6.0 in) over 19 days. Humidity levels are quite similar, with March at 86% and December at 87%. For more detailed information, you can check Santos weather in December.

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Conclusion: What to Expect From March Weather in Santos

As March rolls in, Santos experiences a noticeable shift in weather, characterized by warmer temperatures and a significant increase in humidity. With average daily highs reaching a comfortable 25°C and a staggering 86% humidity, this month feels distinctly more tropical compared to the milder conditions of earlier months. However, it also brings with it an uptick in precipitation, with 20 days of rain contributing to a total of 229 mm of rainfall. This blend of heat and moisture sets the stage for vibrant, lush landscapes, making it an intriguing time to explore all that the region has to offer. For a deeper look at the weather patterns throughout the year, visit Santos Climate.