Last updated: August 31, 2025
May in Bayamon, Puerto Rico offers a delightful tropical climate marked by maximum temperatures reaching 32°C (90°F) and an average temperature of 27°C (80°F). The month is characterized by warm nights, with minimum temperatures hovering around 23°C (73°F). While residents and visitors enjoy the sunshine, the weather also brings 58 mm (2.3 in) of precipitation over approximately 14 days, contributing to a relative humidity level of 75%. This combination of warmth and moisture creates a lush and vibrant atmosphere, perfect for exploring the natural beauty and cultural richness of Bayamon.
In May, Bayamón, Puerto Rico, experiences a delightful warmth as temperatures rise to create a truly inviting atmosphere. With a minimum of 23°C (73°F) and a cozy average of 27°C (80°F), the month transitions into summer effortlessly. The maximum temperature reaches a comfortable 32°C (90°F), setting the stage for sunny days filled with outdoor activities. This trend of increasing temperatures reflects the gradual warming from previous months, making May an ideal time to explore the vibrant culture and scenic landscapes of this beautiful Caribbean locale. As the heat intensifies, locals and visitors alike revel in the perfect weather for beach outings and evening festivities under the stars.
In May, Bayamon, Puerto Rico experiences a moderate level of precipitation, with an average of 58 mm (2.3 inches) over 14 days. This rainfall marks a slight increase from April's amounts and sets the stage for the wetter months ahead, particularly June and July, which typically see a peak in precipitation. As the island transitions into summer, May's weather reflects a growing trend of moisture, hinting at the tropical patterns that define the region’s climate. The consistent rainfall during this month supports the rich biodiversity of Bayamon, nurturing both flora and fauna in the lush landscape. Signature to this time of year, the showers often arrive in brief but invigorating bursts, adding to the vibrant tropical ambiance.
In May, Bayamon, Puerto Rico, experiences a humidity level of 75%, mirroring the slightly lower humidity seen in April. This trend highlights a subtle stability in the region's moisture levels as spring transitions toward summer. With humidity levels gradually increasing, from 76% in January down to 75% in May, it sets the stage for the warmer, more humid months of June and July, where humidity peaks at 77% and 80% respectively. Overall, May serves as a transitional month, marked by comfortable humidity that invites both locals and visitors to enjoy the vibrant natural beauty of the island before the summer heat truly sets in.
As the year progresses in Bayamon, Puerto Rico, the UV Index consistently rises, reaching a peak of 14 in May, categorized as extreme with an alarming burn time of just 10 minutes. This upward trend from January's very high index of 9 highlights the increasing need for sun protection during this time. With the UV levels remaining in the extreme category through the summer months, it's crucial for residents and visitors alike to be vigilant about sun safety. May serves as a vivid reminder that the sun's intensity is no joke, urging everyone to enjoy the outdoors while taking necessary precautions. For more details on day-to-day variations, check out the Bayamon UV Index.
UV Risk Categories
May brings an inviting average of 356 sunshine hours to Bayamón, Puerto Rico, marking it as one of the brightest months of the year. As spring transitions into summer, the trend showcases an impressive increase in sunlight, with May eclipsing the hours recorded in previous months like April, which boasted 346 hours. This upward trajectory begins in January with 257 hours and steadily climbs, highlighting the region’s sunny disposition as it welcomes warmer weather. Following May’s peak, sunshine hours slightly dip in June, but still maintain a commendable average, ensuring that Bayamón basks in abundant warmth and light. The overall pattern reflects a vibrant climatic cycle, inviting both locals and visitors to enjoy outdoor activities under the beautiful Caribbean sun.
In Bayamon, Puerto Rico, the likelihood of enjoying sunny weather in May stands at a comfortable 56%. This month offers a notable balance following the more variable conditions of April, which drops to 50%, and remains relatively optimistic compared to the sunnier spells of earlier months like February and March, where chances soar to 71% and 64% respectively. As we transition into the summer months, however, the sunshine diminishes significantly, particularly in June where the likelihood plummets to just 25%. Thus, May serves as a delightful bridge between the bright early months and the wetter season soon to follow, perfect for outdoor activities.
In Bayamon, Puerto Rico, the daylight duration experiences a gradual shift throughout the year. As the year begins, January and February offer a consistent 11 hours of sunlight, ideal for those who enjoy the cooler mornings and evenings. March marks the onset of longer days with an increase to 12 hours, a trend that continues into April and May, allowing for more outdoor activities as spring unfolds. The days peak in June and July, boasting a generous 13 hours of daylight, perfect for sun-seekers. However, as summer transitions to fall, daylight duration gradually tapers back to 12 hours in August and September, before settling back to 11 hours from October to December. This natural ebb and flow of daylight fosters a vibrant cycle of seasonal activities in Bayamon.
In May, Bayamon, Puerto Rico experiences a pleasant breeze with an average wind speed of 4.4 m/s (10 mph), contributing to the region's warm island atmosphere. As spring transitions into summer, the winds have a mild yet refreshing quality, marking May as a time of gentle gusts following the lower speeds of April. This shift hints at the gradual increases seen later in the season, with June and July boasting even stronger winds of 4.9 m/s (11 mph) and 5.3 m/s (12 mph), respectively. Overall, May perfectly encapsulates a balance of tranquility and the anticipation of the more vigorous breezes to come in the following months, making it an ideal time to savor the outdoors.
Weather in Bayamon varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bayamon, focusing on differences in temperature, rainfall, humidity, and UV levels.
May tends to be hotter than January, with average temperatures reaching 27°C (80°F) compared to January's 25°C (77°F). The maximum temperatures in May can soar up to 32°C (90°F), making it feel quite warm, while January peaks at a more moderate 30°C (86°F). Additionally, May experiences slightly more rainfall, with 58 mm (2.3 in) over about 14 days, whereas January sees 39 mm (1.5 in) over 12 days. Despite the warmer conditions, humidity remains consistently high in both months, at 75% in May and 76% in January. For a more detailed look at January's weather, check out Bayamon weather in January.
In comparing the weather between May and February, it is evident that May tends to be warmer overall. In May, temperatures range from a minimum of 23°C (73°F) to a maximum of 32°C (90°F), with an average of 27°C (80°F). In contrast, February experiences slightly cooler temperatures, with minimums of 21°C (70°F), an average of 25°C (77°F), and maximums reaching 30°C (85°F). While both months see considerable humidity at 75%, May receives more precipitation, totaling 58 mm (2.3 in) over 14 days, compared to February’s 43 mm (1.7 in) over 13 days. For more details on the February climate, you can check Bayamon weather in February.
In comparing the weather of March and May, we observe that May generally presents a warmer climate, with average temperatures rising to 27°C (80°F) compared to March's 25°C (77°F). The maximum temperatures in both months are similar, but May tends to be slightly hotter, reaching up to 32°C (90°F) versus March's high of 31°C (87°F). When it comes to precipitation, March has a slightly higher average of 72 mm (2.8 in) compared to May's 58 mm (2.3 in), although both months experience rainfall on approximately 14 days. Humidity levels remain relatively consistent, with May at 75% and March at 74%. For a detailed look at March weather, visit Bayamon weather in March.
In comparing the weather between April and May, both months exhibit warm temperatures, with May being slightly warmer overall. April has a minimum temperature of 22°C (71°F) and averages around 26°C (78°F), while May sees a minimum temperature of 23°C (73°F) and an average of 27°C (80°F). The maximum temperatures are also comparable, with April reaching 31°C (88°F) and May peaking at 32°C (90°F). Precipitation levels are similar as well, with April recording 55 mm (2.2 in) over 10 days and May slightly higher at 58 mm (2.3 in) across 14 rainy days. Both months maintain a constant humidity level of 75%, making for a consistently humid climate. For more details, you can check Bayamon weather in April.
In comparing the weather of May and June, we notice that both months have similar temperature ranges, with an average of around 27°C (80°F) to 27°C (81°F), and maximum temperatures peaking at 32°C (90°F). However, June sees a slight increase in minimum temperature, rising from 23°C (73°F) in May to 24°C (75°F). Additionally, precipitation levels increase slightly from 58 mm (2.3 in) over 14 days in May to 62 mm (2.4 in) across 15 days in June, while humidity also rises from 75% to 77%. For more specific details regarding June weather in Bayamon, you can check Bayamon weather in June.
In comparing the weather of May and July, we see that both months enjoy warm temperatures, with average highs reaching around 32°C (90°F). However, July tends to be slightly warmer with an average temperature of 28°C (82°F), compared to May's average of 27°C (80°F). Additionally, July experiences more precipitation at 76 mm (3.0 in) over 17 days, compared to May's 58 mm (2.3 in) over 14 days. The humidity is also higher in July, at 80%, compared to 75% in May. For more details on July's weather patterns, you can check Bayamon weather in July.
In comparing the weather of May and August, we see some notable differences. May has a slightly lower temperature range, with a minimum of 23°C (73°F) and an average of 27°C (80°F), while August's minimum temperature starts at 25°C (77°F) and averages 28°C (82°F). Both months experience maximum temperatures of 32°C (90°F), indicating similar peak heat. However, August tends to be wetter, receiving 86 mm (3.4 in) of precipitation over 18 days compared to May's 58 mm (2.3 in) over 14 days. Furthermore, humidity levels are also higher in August at 80%, compared to 75% in May. For a closer look at the specifics, you can visit Bayamon weather in August.
May and September in Bayamon showcase similar temperature ranges, with both months experiencing maximums reaching up to 32°C (90°F). However, May typically feels slightly warmer with an average of 27°C (80°F) compared to September's average of 28°C (82°F). In contrast, September experiences significantly higher precipitation, totaling 172 mm (6.8 in) over 23 days, while May sees just 58 mm (2.3 in) across 14 days. Additionally, September boasts slightly higher humidity levels at 79%, compared to May's 75%. For further details on the specifics of September weather, you can visit Bayamon weather in September.
In comparing May and October weather, both months feature similar temperature ranges, with average highs around 27°C (81°F) and max temperatures peaking at 32°C (89°F) to 32°C (90°F). However, October experiences significantly higher precipitation, with 136 mm (5.3 in) over 22 days, compared to May's 58 mm (2.3 in) over just 14 days. This increased rainfall contributes to higher humidity levels in October, reaching 78%, slightly above May's 75%. For more detailed information, you can check Bayamon weather in October.
In comparing the weather between May and November, both months exhibit warm temperatures, with May having a slightly higher average maximum of 32°C (90°F) compared to November's 30°C (87°F). The minimum temperatures are consistent, with both months starting at around 23°C (73-74°F). However, November experiences more precipitation, totaling 93 mm (3.7 in) over 17 days, compared to May's 58 mm (2.3 in) over 14 days. Additionally, November has marginally higher humidity at 78%, versus May's 75%. For a more detailed look at the weather during this time, you can check Bayamon weather in November.
In May, temperatures typically range from a minimum of 23°C (73°F) to a maximum of 32°C (90°F), with an average temperature of around 27°C (80°F). The month experiences relatively high humidity at 75% and receives about 58 mm (2.3 in) of precipitation over 14 days. In contrast, December's weather is slightly cooler, with temperatures ranging from a minimum of 22°C (73°F) to a maximum of 31°C (87°F) and an average temperature of 26°C (78°F). While December sees a bit less precipitation at 50 mm (2.0 in) over 16 days, the humidity remains similarly high at 76%. For more detailed information on December's weather, you can visit Bayamon weather in December.
As May unfolds in Bayamon, visitors can expect a delightful transition to warmer weather, with temperatures averaging a comfortable 27°C. This month sets the stage for increased humidity levels, often hovering around 75%, making it feel distinctly tropical. While precipitation becomes more frequent with a notable increase in rainy days, the lush surroundings thrive under these conditions, adding to Bayamon's vibrant appeal. Overall, May offers a unique blend of warmth and moisture, paving the way for the sultry months ahead. For more insights, check out Bayamon Climate.