Last updated: August 31, 2025
March in San Juan, Puerto Rico offers a delightful tropical experience characterized by a maximum temperature of 30°C (86°F) and an average temperature of 25°C (77°F), creating ideal conditions for outdoor activities. With a minimum temperature of 21°C (71°F), the evenings remain pleasantly warm. However, travelers should prepare for the possibility of 14 rainy days, leading to a total precipitation amount of 67 mm (2.6 in). The air is infused with a humidity level of 74%, enhancing the island's lush landscapes and vibrant atmosphere. Enjoy the blend of sunshine and showers that defines this lively month in paradise!
In March, San Juan, Puerto Rico, begins to transition into warmer weather, with minimum temperatures rising to 21°C (71°F), and maximums reaching 30°C (86°F). The average temperature holds steady at a comfortable 25°C (77°F), mirroring the consistent warmth of the earlier months. As spring approaches, visitors can anticipate delightful conditions ideal for exploring the vibrant city and its beautiful beaches. Notably, the gradual increase in maximum temperatures signals a shift towards the warmer months ahead, making March an excellent time for travelers seeking a perfect blend of sunshine and gentle breezes.
March in San Juan, Puerto Rico, sees a notable increase in rainfall, accumulating 67 mm (2.6 in) over 14 days. This uptick marks a shift from the drier months of January and February, where precipitation averaged just over 40 mm. As the month unfolds, the transition towards the wetter season becomes evident, setting the stage for April and May, which continue the trend with higher rainfall amounts. The trend suggests that the region is moving into a period where showers become more frequent and intense, ultimately leading into the peak of the rainy season during the summer months.
As March arrives in San Juan, Puerto Rico, residents and visitors alike experience a slight decrease in humidity, with levels averaging around 74%. This subtle dip continues a trend seen from the previous months, where humidity has gradually eased from 76% in January and 75% in February. While March is typically a transition period, it foreshadows the rising humidity levels that follow, particularly as the summer months draw near, bringing with them the more humid conditions of June and July, where humidity peaks at 80%. Overall, March offers a brief respite from the more intense humidity that characterizes other months, making it an ideal time to enjoy San Juan's vibrant outdoor culture.
In March, San Juan, Puerto Rico, experiences an extreme UV Index of 13, indicating that sun exposure can lead to skin burn in as little as 10 minutes. This marks a significant rise from January's UV Index of 9 and February's 11, showcasing a trend of intensifying sun intensity as spring approaches. The months of March through June consistently hold an extreme UV Index level, prompting residents and visitors to prioritize sun safety. As the sun's rays become relentless, it's crucial to stay informed and take precautions. For more details on the UV Index throughout the year, visit San Juan UV Index.
UV Risk Categories
March in San Juan, Puerto Rico, brings a delightful burst of sunshine, boasting an impressive 346 hours of sunlight. This month marks a significant increase from the preceding January and February, which saw 257 and 303 hours, respectively, creating a vibrant atmosphere as Spring unfolds. As the days grow longer, March mirrors the sunshine of April, which also enjoys 346 hours of radiant light. Leading into May, the brightness escalates further to 356 hours, showcasing the island's trend of escalating sunlight as the year progresses. This consistent increase not only enhances the allure of San Juan as a tropical paradise but also invites visitors to revel in outdoor adventures under the glorious Caribbean sun.
In March, San Juan, Puerto Rico enjoys a healthy chance of sunny weather, with approximately 64% of days basking in sunlight. This figure represents a slight dip from February's 70% but is comfortably above the upcoming April's 49%. Notably, March stands out in a transitional phase as the peak of winter sunshine begins to wane, before the wetter summer months set in, where June drops significantly to just 24% sunny days. The consistent warmth throughout the year and the trending decrease in sunshine leading into summer make March a perfect time for visitors seeking a balance of beach days and pleasant activities without the intense heat of the peak summer months.
In March, San Juan, Puerto Rico, experiences a delightful increase in daylight, with 12 hours of sunshine gracing the days. This marks a transition as daylight stretches longer following the consistent 11 hours found in January and February. The momentum continues into April and May, where daylight remains steady at 12 hours, creating a vibrant atmosphere just before the summer months. As June approaches, daylight peaks at 13 hours, signaling the arrival of longer, sun-filled days perfect for exploring the island. This rhythm of fluctuating daylight showcases the gradual shift towards the summer solstice, making March a delightful precursor to the abundant sunlight ahead.
March in San Juan, Puerto Rico, brings a delightful breath of fresh air with an average wind speed of 4.5 m/s (10 mph). This slight increase from February's 5.2 m/s (12 mph) ushers in a comfortable transition as the island bids farewell to winter's chill. As spring approaches, the winds tend to calm a bit, dipping to 3.8 m/s (9 mph) in April, creating a soothing backdrop for outdoor adventures. Interestingly, while July marks the windiest month at 5.3 m/s (12 mph), the overall pattern shows a gentle oscillation, with calm breezes in the autumn months of September and October. March stands out as a perfect time to enjoy the invigorating coastal air, harmonizing perfectly with the island's vibrant atmosphere.
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between March and January, both months exhibit similar warm temperatures, with January experiencing a slight variation in maxima at 29°C (85°F) compared to March's 30°C (86°F). Both months maintain a minimum temperature of around 21°C (71°F) and an average temperature of 25°C (77°F). However, March receives considerably more precipitation at 67 mm (2.6 in) over 14 days, while January has a lower total of 38 mm (1.5 in) across 12 days. Humidity levels are comparable, with January at 76% and March slightly lower at 74%. For a more detailed look at January weather, you can refer to this link: San Juan weather in January.
In comparing the weather of March and February, we see some notable similarities and differences. Both months have a minimum temperature of around 21°C (70-71°F) and an average temperature of 25°C (77°F). However, March experiences slightly warmer maximum temperatures, reaching up to 30°C (86°F), whereas February peaks at 29°C (85°F). Precipitation also varies, with March receiving more rain at 67 mm (2.6 in) over 14 days, compared to February's 43 mm (1.7 in) over 12 days. Humidity remains fairly consistent, with March at 74% and February at 75%. For a more detailed look at February’s weather, you can visit San Juan weather in February.
March and April show a noticeable warming trend in terms of temperature. In March, the minimum temperature hovers around 21°C (71°F) with an average of 25°C (77°F) and a peak of 30°C (86°F). In contrast, April experiences slightly higher temperatures, with a minimum of 22°C (71°F), an average of 26°C (78°F), and a maximum reaching 31°C (88°F). Precipitation decreases in April to 56 mm (2.2 in) over 10 days, compared to March’s 67 mm (2.6 in) across 14 days. Humidity levels remain relatively stable, at 74% in March and 75% in April, indicating a slight increase in moisture. For more details, check out San Juan weather in April.
In March, temperatures range from a minimum of 21°C (71°F) to a maximum of 30°C (86°F), with an average of 25°C (77°F). The month experiences about 67 mm (2.6 in) of precipitation over 14 days, and humidity levels are at 74%. In contrast, May sees slightly warmer temperatures, with minimums of 23°C (73°F), averages of 27°C (80°F), and maximums reaching 32°C (90°F). Precipitation in May is marginally lower at 64 mm (2.5 in) with rainfall occurring over 13 days, while humidity remains similar at 75%. For a more detailed look at May’s weather, you can visit San Juan weather in May.
In March, the weather tends to be warm with a minimum temperature of 21°C (71°F) and an average high of 30°C (86°F), while experiencing around 67 mm (2.6 in) of precipitation over 14 days and humidity levels around 74%. By June, temperatures rise slightly, with a minimum of 24°C (75°F) and an average maximum of 32°C (90°F), accompanied by a similar precipitation amount of 68 mm (2.7 in) spread over 15 days. Humidity also increases to 77% in June, making the climate feel a bit more intense. For more detailed insights, you can check San Juan weather in June.
In comparing March and July weather, March offers slightly milder temperatures, with a minimum of 21°C (71°F), an average of 25°C (77°F), and a maximum of 30°C (86°F). The month experiences a moderate level of precipitation, totaling 67 mm (2.6 in) across 14 days, and boasts a humidity level of 74%. Conversely, July sees warmer temperatures, with a minimum of 24°C (76°F), an average of 28°C (82°F), and a maximum of 32°C (90°F). Precipitation in July is higher at 87 mm (3.4 in) over 18 days, with humidity rising to 80%. For more details on July weather patterns, you can visit San Juan weather in July.
March and August present distinct weather patterns, reflecting the transition into and out of summer. In March, temperatures range from a minimum of 21°C (71°F) to a maximum of 30°C (86°F), with an average of 25°C (77°F); however, it experiences about 67 mm (2.6 in) of precipitation over 14 days, accompanied by a moderate humidity of 74%. In contrast, August boasts warmer temperatures, hitting a minimum of 24°C (76°F) and peaking at 32°C (90°F), with an average of 28°C (82°F). This month also sees increased rainfall, totaling 99 mm (3.9 in) over 18 days, and higher humidity levels at 80%. For more detailed insights, check out San Juan weather in August.
March and September both feature warm temperatures, but September tends to be hotter and wetter. In March, temperatures range from a minimum of 21°C (71°F) to a maximum of 30°C (86°F), with an average of 25°C (77°F) and 67 mm (2.6 in) of precipitation spread over 14 days. In contrast, September sees slightly higher temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (90°F), averaging 28°C (82°F). The rainfall during September is significantly higher, totaling 173 mm (6.8 in) over 23 days, along with increased humidity of 79%. For more details, check out San Juan weather in September.
In comparing the weather between March and October, we see some notable differences. March typically experiences milder temperatures with a minimum of 21°C (71°F) and an average of 25°C (77°F), while October is slightly warmer, with a minimum of 24°C (75°F) and an average of 27°C (81°F). Precipitation in March is lower at 67 mm (2.6 in) over 14 days, compared to October's higher total of 145 mm (5.7 in) spread across 22 days, indicating a wetter month. Additionally, October has a marginally higher humidity level at 78% versus March's 74%. For more detailed information, you can visit San Juan weather in October.
March tends to be warm with temperatures ranging from a minimum of 21°C (71°F) to a maximum of 30°C (86°F), and an average of 25°C (77°F). The month experiences about 67 mm (2.6 in) of precipitation over 14 days, coupled with a humidity level of 74%.
In contrast, November features slightly higher temperatures with a minimum of 23°C (74°F) and a maximum of 31°C (87°F), averaging 26°C (80°F). This month is notably wetter, receiving 106 mm (4.2 in) of rainfall over 16 days, along with higher humidity at 78%. For more details on the climate, check out San Juan weather in November.
Overall, while both months are warm, November is slightly hotter and more humid, with increased precipitation compared to March.
When comparing the weather in March and December, both months experience warm temperatures, but with slight variations. March sees a minimum temperature of 21°C (71°F) and an average of 25°C (77°F), while December has a slightly warmer minimum of 23°C (73°F) and an average of 26°C (78°F). The maximum temperatures are comparable, with March reaching 30°C (86°F) and December peaking at 31°C (87°F). In terms of precipitation, March receives more rain at 67 mm (2.6 in) over 14 days compared to December's 51 mm (2.0 in) over 16 days. Humidity levels are also similar, with March at 74% and December slightly higher at 76%. For more details, you can check San Juan weather in December.
March in San Juan marks a transition as temperatures begin to rise, creating a pleasant blend of warmth and humidity that distinguishes it from the cooler winter months. With average highs reaching 30°C and a comfortable minimum around 21°C, it's a month that invites both locals and tourists to enjoy the vibrant outdoor scene. However, it also brings a notable increase in precipitation, with about 14 days of rain contributing to an overall humidity level of 74%. This combination of warmth and moisture sets March apart, as visitors can experience both sun and refreshing showers. For more detailed insights on the weather trends throughout the year, check out San Juan Climate.