Last updated: August 21, 2025
In May, Santos, Brazil, experiences a delightful blend of warm temperatures and refreshing rainfall. With daily highs reaching up to 29°C (84°F) and an average temperature of 22°C (71°F), the climate remains comfortable for outdoor activities. However, nature’s touch is felt as the city witnesses 130 mm (5.1 in) of precipitation over 13 days, creating a vibrant and lush environment. The humidity level, lingering around 84%, adds to the tropical charm, making May an intriguing month for both residents and visitors to explore the rich landscapes Santos has to offer.
In May, Santos, Brazil, experiences a noticeable transition as temperatures continue their descent from the warmer months. The minimum temperature drops to a comfortable 15°C (59°F), while the average hovers around 22°C (71°F), creating a pleasant atmosphere for locals and visitors alike. Daily highs reach up to 29°C (84°F), making it a delightful time to explore the coastal beauty. This month marks a shift towards cooler weather, signaling the approach of winter, yet the climate remains inviting enough for outdoor activities and beach outings, aligning beautifully with the vibrant energy of the city.
In May, Santos experiences a notable dip in precipitation, with 130 mm (5.1 in) typically falling over 13 days. This decrease marks a contrast to the wetter months preceding it, particularly February and March, which recorded over 200 mm of rain. The trend reflects a gradual transition towards the drier winter months ahead, as rainfall continues to diminish into June, where it drops further to 117 mm over just 12 days. This seasonal shift is characteristic of Santos' climate, highlighting May as a month of easing showers, paving the way for sunnier days during the colder half of the year.
In May, Santos, Brazil experiences a consistent level of humidity at 84%, maintaining the trend established in the previous month. This marks a slight decrease from the early months of the year, where humidity hovered near 89% in January and gradually declined through April. As the city transitions into the cooler, drier months of late autumn and winter, humidity continues its downward trajectory towards June, where it drops further to 82%. This gradual decline not only characterizes the shift in seasons but also offers residents a brief respite from the stifling humidity that often envelops Santos earlier in the year. The month of May often balances between the lingering warmth of summer and the approaching chill of winter, making it a refreshing time for both locals and visitors.
As May rolls into Santos, Brazil, residents and visitors experience a noticeable shift in the UV Index, which measures at 8, placing it in the "very high" exposure category. This marks a decline from the extreme levels seen in the previous months, though the sun remains powerful enough that unprotected skin can still burn in as little as 15 minutes. The trend from January through April shows consistently extreme UV ratings, with indices peaking at 15 in January and February, indicating the importance of sun protection during these hotter months. As the year progresses into June, the UV Index further decreases, falling to 6 and entering the "high" category, allowing a more extended safe exposure time of 25 minutes. For those navigating the sun-soaked beaches or outdoor activities, keeping track of the changing UV Index is essential to enjoy a safe experience in Santos. For more details, visit the Santos UV Index.
UV Risk Categories
May brings a delightful average of 274 sunshine hours to Santos, Brazil, contributing to a vibrant atmosphere as the city transitions from the lush rains of April. This month stands out with more sunlight than June and August, hinting at a perfect balance between warmth and occasional brief showers. As part of a broader trend, the sunlit days peak dramatically in December, while the yearly cycle reveals January and February basking in nearly 256 to 265 hours. The steady increase towards the mid-year and the warm embrace of late spring make May a wonderful time to experience Santos, inviting both locals and tourists to soak up its sunny charm.
As May approaches in Santos, Brazil, the likelihood of sunny weather remains quite inviting, with a 47% chance of sunshine. This puts May in a favorable position compared to the preceding months, particularly April, which enjoys a slightly higher 49% chance of clear skies. While May's sunny probability is lower than the peak of 61% seen in July, it still stands out positively against the rainy months like January and October, which grapple with only 16% and 21% sunny days, respectively. As the region transitions towards the drier winter months, May offers a delightful balance of warmth and light, making it an appealing time for outdoor activities before the cooler days set in.
As the year progresses in Santos, Brazil, daylight duration showcases a fascinating rhythm. Starting strong in January, residents bask in 13 hours of sunlight, which gradually diminishes to 10 hours by May and continues through June and July. This period of shorter days contrasts sharply with the resurgence of light as spring approaches, with daylight extending back to 11 hours in August and 12 hours by October. As the year draws to a close, Santos relishes in the return of longer days, reaching 13 hours again in November and December. This cyclical dance of daylight not only influences daily activities but also encapsulates the vibrant essence of life in this coastal city.
In Santos, Brazil, the winds in May are pleasantly moderate, averaging 3.3 m/s (7 mph), making it a perfect month for both sailors and beachgoers alike. As the year progresses, there's a notable trend of increasing wind speeds from the calmer months of January through March, where averages hover around 2.6 to 2.8 m/s (6 mph), to the breezier conditions experienced in the latter half of the year. Interestingly, May's wind pattern follows a slight dip from the more blustery April (3.6 m/s or 8 mph) but is on par with the steady winds seen in June and July. This gradual increase to 4.7 m/s (11 mph) by October hints at the seasonal shifts, offering a refreshing backdrop for outdoor activities as the year unfolds. Overall, May’s wind adds a delightful touch to Santos, inviting both adventure and tranquility.
Weather in Santos varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Santos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, temperatures tend to be milder, with a minimum of 15°C (59°F), an average of 22°C (71°F), and a maximum of 29°C (84°F). The month experiences about 130 mm (5.1 in) of precipitation over 13 days, along with a humidity level of 84%. In contrast, January is typically warmer, with minimum temperatures at 21°C (69°F), an average of 26°C (79°F), and a maximum reaching 32°C (90°F). However, it also sees more rain, with 184 mm (7.2 in) of precipitation spread over 18 days and higher humidity at 89%. For more detailed insights into January weather, check out Santos weather in January.
When comparing the weather in May and February, several notable differences emerge. In May, temperatures range from a minimum of 15°C (59°F) to a maximum of 29°C (84°F), with an average of 22°C (71°F). The month typically experiences 130 mm (5.1 in) of precipitation over 13 days, accompanied by a humidity level of 84%. In contrast, February is noticeably warmer, with minimum temperatures of 21°C (69°F) and maximums reaching up to 33°C (91°F). The average temperature sits at 25°C (78°F), but it sees higher precipitation at 249 mm (9.8 in) over 19 days and slightly increased humidity at 87%. For more detailed insights, you can visit Santos weather in February.
In comparing the weather between March and May, March typically starts off warmer, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 32°C (90°F). In contrast, May experiences cooler averages, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 29°C (84°F). However, March is also marked by higher precipitation, receiving 229 mm (9.0 in) over 20 days, while May has less rainfall at 130 mm (5.1 in) across 13 rainy days. Both months feature high humidity levels, with March at 86% and May at 84%. For more detailed insights into March weather, you can check Santos weather in March.
In comparing the weather between April and May, we see several notable differences. April boasts slightly warmer temperatures overall, with a minimum of 19°C (66°F) and an average of 23°C (74°F), peaking at 31°C (89°F). In contrast, May's temperatures are a bit cooler, with a minimum of 15°C (59°F) and a maximum of 29°C (84°F). Both months experience significant rainfall, with April totaling 139 mm (5.5 in) over 15 days and May accumulating 130 mm (5.1 in) across 13 days. Interestingly, the humidity remains constant at 84% for both months. For a detailed look at the weather conditions in April, you can check Santos weather in April.
May and June exhibit similar weather patterns, though with some notable differences. In May, temperatures range from a minimum of 15°C (59°F) to a maximum of 29°C (84°F), with an average of 22°C (71°F). The month sees higher precipitation at 130 mm (5.1 in) over 13 days, coupled with an 84% humidity level. In contrast, June maintains a slightly cooler average temperature of 21°C (70°F), with highs reaching 30°C (86°F). Precipitation in June is marginally lower at 117 mm (4.6 in) over 12 days, and humidity drops slightly to 82%. For a detailed look at weather conditions in June, you can visit Santos weather in June.
May and July display contrasting weather patterns, with May generally experiencing warmer temperatures. In May, the minimum temperature is around 15°C (59°F), with an average of 22°C (71°F) and a maximum of 29°C (84°F). This month also sees significant rainfall, with approximately 130 mm (5.1 in) over 13 days, resulting in high humidity levels at 84%. In contrast, July presents cooler temperatures, with a minimum of 11°C (53°F), an average of 20°C (67°F), and a maximum extending to 30°C (86°F). Precipitation drops to 81 mm (3.2 in) over only 8 days, and humidity slightly decreases to 80%. For more detailed information about weather conditions, check Santos weather in July.
In comparing the weather between May and August, May tends to be warmer overall, with average temperatures reaching 22°C (71°F) compared to August's 19°C (67°F). While both months experience similar maximum temperatures, with August peaking at 30°C (87°F), May's minimum temperature is slightly higher at 15°C (59°F) versus August’s 14°C (57°F). Additionally, May has a higher average humidity of 84%, which can make it feel more muggy than August's more comfortable 78%. Both months receive comparable rainfall, with May recording 130 mm (5.1 in) and August slightly more at 133 mm (5.3 in), both spread over approximately 13 days. For more details on August weather, you can refer to Santos weather in August.
May and September exhibit distinct weather characteristics. In May, temperatures range from a minimum of 15°C (59°F) to a maximum of 29°C (84°F), with an average temperature of 22°C (71°F). This month also sees a higher precipitation level at 130 mm (5.1 in) spread over 13 days, combined with a humidity level of 84%. In contrast, September enjoys slightly warmer maximum temperatures, reaching up to 33°C (92°F), while the average drops to 21°C (70°F) and the minimum remains at 15°C (60°F). Precipitation decreases to 102 mm (4.0 in) over the same number of rainy days, and humidity is lower at 78%. For more detailed insights into September's weather, visit Santos weather in September.
In comparing the weather of May and October, both months offer warm temperatures with averages around 22°C (72°F). However, October experiences slightly higher minimum and maximum temperatures, ranging from 17°C (62°F) to 34°C (93°F), while May's temperatures range from 15°C (59°F) to 29°C (84°F). October also sees increased precipitation, with 183 mm (7.2 in) over 19 days, compared to May's 130 mm (5.1 in) over just 13 days, contributing to a more humid climate, albeit with a lower relative humidity at 76%. For more detailed insights on October's weather, you can check Santos weather in October.
May and November exhibit relatively similar average temperatures, hovering around 22°C (72°F). However, May tends to be slightly cooler, with a minimum of 15°C (59°F) compared to November's minimum of 17°C (63°F). November experiences higher maximum temperatures, reaching up to 31°C (87°F), making it feel warmer overall. Precipitation is notably higher in November, with 147 mm (5.8 in) over 18 days, compared to May's 130 mm (5.1 in) across 13 days, resulting in November being the wetter month. Humidity levels in both months are quite comparable, with May at 84% and November at 85%. For more detailed insights, check out Santos weather in November.
In comparing the weather between May and December, we notice that both months are relatively warm, but December tends to be slightly warmer overall. May features average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 29°C (84°F), while December sees a minimum of 19°C (66°F) and can reach up to 30°C (87°F). Precipitation levels are also noteworthy; May experiences 130 mm (5.1 in) over 13 days, whereas December has a slightly higher precipitation level of 153 mm (6.0 in) across 19 days, contributing to a higher humidity level of 87%. Those interested in learning more can visit Santos weather in December.
In May, Santos experiences a delightful transition as it welcomes milder temperatures and increased humidity, setting it apart from the hotter months of summer. With maximum highs around 29°C and average temperatures settling at a comfortable 22°C, the weather is perfect for outdoor activities, even as it also brings about a rise in rainfall. The city sees about 13 days of rain throughout the month, contributing to a total precipitation of 130 mm, a stark contrast to the drier periods. This blend of warmth and occasional showers creates an inviting atmosphere, making May a wonderful time to explore the vibrant coastline. For more details on the weather patterns throughout the year, visit Santos Climate.