Last updated: August 31, 2025
July in San Juan, Puerto Rico is characterized by its warm tropical climate, with maximum temperatures reaching up to 32°C (90°F) and an average of 28°C (82°F). Visitors can expect comfortable evenings as temperatures dip to a minimum of 24°C (76°F). However, the month also brings about significant precipitation, with a total of 87 mm (3.4 in) spread across approximately 18 rainy days. The humidity levels linger around 80%, adding to the sultry atmosphere. While sun-soaked days are common, it’s advisable to prepare for the sporadic showers that play a vital role in maintaining the lush landscapes of this beautiful island.
In July, San Juan, Puerto Rico, offers a delightful tropical experience with temperatures that typically range from a comfortable 24°C (76°F) at night to a warm 32°C (90°F) during the day. The average temperature hovers around a pleasant 28°C (82°F), making it an ideal time for beach outings and outdoor adventures. As summer reaches its peak, the consistent warmth mirrors the trends of preceding months, with July maintaining the same maximum temperatures as both June and August. This continuity not only highlights the island's inviting climate but also invites visitors to enjoy the vibrant culture and stunning landscapes under the sun.
In July, San Juan, Puerto Rico, experiences a noticeable increase in precipitation, with an average of 87 mm (3.4 in) of rain over 18 days. This rainy month marks a significant uptick compared to the previous June, where 68 mm (2.7 in) fell in just 15 days. As the summer continues, rainfall further intensifies, setting the stage for August to deliver even more with 99 mm (3.9 in) expected. The increase in both precipitation amount and frequency indicates a shift towards a wetter climate as the island navigates through its tropical season, making July a crucial month for understanding San Juan's climatic patterns.
In July, San Juan, Puerto Rico experiences a notable peak in humidity, rising to 80%—matching the levels seen in August. This summer surge is part of a larger trend that shows consistently high humidity throughout the warmer months, with June already reaching 77%. From April onward, the relative humidity remains above 75%, indicating that the tropical climate creates a steadily breezy yet humid atmosphere. Interestingly, after this mid-summer high, humidity begins to taper off slightly in September and October, providing a brief respite before the cycle begins anew. The yearly pattern illustrates how San Juan's tropical essence is firmly rooted in its warm and humid summer season, perfectly balancing the vibrant island life.
In July, San Juan, Puerto Rico experiences a notably high UV Index of 12, classifying the exposure category as extreme, with a burn time of just 10 minutes. This follows a trend seen in the preceding months, which have consistently hovered in the extreme range, peaking at 14 in May. The transition into summer months from January's very high index of 9 showcases a clear upward trajectory, emphasizing the need for sun protection. While August and September maintain similar UV levels, the intensity does begin to decrease in October. As you plan your outdoor activities, be sure to check the San Juan UV Index for safety tips and to enjoy the beautiful sun safely!
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In July, San Juan, Puerto Rico, basks in a delightful 353 hours of sunshine, making it a peak summer paradise. This month features an impressive array of bright days, just shy of the vibrant May. From the start of the year, we witness a gradual increase in sunlight, with February kicking off the trend at 303 hours, and March and April maintaining that upward momentum. The sunlight remains abundant as summer rolls in, with June recording a solid 343 hours. Following July, the sunshine slips slightly in August but stays consistent, averaging around 349 hours. Overall, summer in San Juan is an unmissable season of golden rays, inviting visitors to soak up its warmth before the sun begins to wane in the autumn months.
In July, the likelihood of enjoying sunny weather in San Juan, Puerto Rico, is approximately 43%, reflecting a notable dip compared to the sunnier months earlier in the year. While the sun shines brightly in the winter and early spring, with chances peaking at 70% in February, the summer months show a trend of diminishing sunshine, notably dropping to 24% in June. This pattern suggests that while July still holds promise for sun-seekers, they may want to prepare for a mix of sun and occasional rain as the tropical climate shifts into the peak of the season. In the grand scheme of the year, July's chances are among the lower percentages, hinting that planning for both sun and shade would be wise for those visiting during this time.
In San Juan, Puerto Rico, July brings a delightful 13 hours of daylight, mirroring the slightly longer hours seen in June. This peak summer month heralds an abundance of sunshine, perfect for enjoying the vibrant outdoor culture and stunning beaches. As the year progresses from January to April, daylight begins to gradually increase, reaching its zenith in June and July. Following this, daylight duration gradually tapers off, with August experiencing a slight decline back to 12 hours. This trend highlights the seasonal rhythm in San Juan, where bright, sunlit days invite adventure and relaxation during the warmest months of the year.
In July, San Juan, Puerto Rico, experiences a noticeable uptick in wind speed, averaging 5.3 m/s (12 mph), making it one of the breeziest months of the year. This increase marks a transition from the relatively milder winds of spring and early summer, with June only averaging 4.9 m/s (11 mph). Following the peak in July, there’s a gentle decline in wind speeds in the subsequent months, with August dipping to 4.6 m/s (10 mph). Interestingly, as the year progresses, the wind speeds generally trend downward, reaching their lowest in September at 3.2 m/s (7 mph). Thus, July stands out as a vibrant month where the wind brings a refreshing breeze, perfectly complementing the warm tropical climate.
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In July, temperatures are notably warmer, with average highs reaching 32°C (90°F) and a significant humidity level of 80%, contributing to a generally more sultry atmosphere. The month also sees substantial rainfall, accumulating 87 mm (3.4 in) over approximately 18 days. In contrast, January presents a milder climate, with average temperatures peaking at 29°C (85°F) and a lower humidity of 76%. January experiences less precipitation, totaling 38 mm (1.5 in) over around 12 days. For more details, check out San Juan weather in January.
In comparing the weather of July and February, it's evident that July is warmer and more humid. July boasts a minimum temperature of 24°C (76°F) and averages around 28°C (82°F), reaching a maximum of 32°C (90°F). In contrast, February's temperatures are slightly cooler, with a minimum of 21°C (70°F), an average of 25°C (77°F), and a maximum of 29°C (85°F). Precipitation levels also differ significantly; July receives 87 mm (3.4 inches) of rain over 18 days, while February has a milder 43 mm (1.7 inches) across 12 days. Additionally, July maintains a higher humidity level at 80%, compared to February's 75%. For more detailed information, you can check San Juan weather in February.
When comparing the weather between July and March, it's evident that July tends to be warmer and more humid. July has a minimum temperature of 24°C (76°F) and averages around 28°C (82°F), peaking at 32°C (90°F), while March is slightly cooler with a minimum of 21°C (71°F) and an average of 25°C (77°F), reaching a maximum of 30°C (86°F). In terms of precipitation, July experiences 87 mm (3.4 in) over approximately 18 days, compared to March's 67 mm (2.6 in) spread across 14 days. Additionally, humidity levels are higher in July at 80% compared to 74% in March. For more insights on the climate, check out San Juan weather in March.
In comparing the weather between July and April, July tends to be warmer and more humid. The average temperature in July is 28°C (82°F), slightly higher than April's average of 26°C (78°F), while the maximum temperatures are comparable, reaching 32°C (90°F) in July and 31°C (88°F) in April. Additionally, July experiences more precipitation, with 87 mm (3.4 inches) over 18 days, compared to April's 56 mm (2.2 inches) over just 10 days. Humidity levels are also higher in July at 80%, compared to 75% in April, contributing to the overall perception of July as a more tropical month. For more detailed insights on April weather, you can visit San Juan weather in April.
In comparing the weather between May and July, both months experience similar temperature ranges, with July showcasing slightly higher averages, particularly in minimum temperatures. July records a minimum of 24°C (76°F) and averages 28°C (82°F), while May has a minimum of 23°C (73°F) and an average of 27°C (80°F). Furthermore, July tends to be wetter, with 87 mm (3.4 in) of precipitation over 18 days compared to May's 64 mm (2.5 in) over 13 days. Humidity levels also rise slightly in July, reaching 80%, in contrast to May's 75%. For those interested in more detailed information, check out San Juan weather in May.
In comparing the weather between June and July, both months share similar high temperatures, with maximums reaching 32°C (90°F) and minimums around 24°C (75-76°F). However, July sees a slight increase in average temperature, rising to 28°C (82°F) compared to June's 27°C (81°F). Additionally, July experiences more rainfall, with 87 mm (3.4 in) over 18 days, while June has less precipitation at 68 mm (2.7 in) across 15 days. Humidity also rises in July to 80%, slightly higher than June's 77%. For more detailed information, you can check San Juan weather in June.
Both July and August feature similar temperature patterns, with minimums at 24°C (76°F), averages around 28°C (82°F), and maximums reaching 32°C (90°F). However, August experiences slightly higher precipitation, totaling 99 mm (3.9 in) over 18 days compared to July's 87 mm (3.4 in). Despite this increase in rainfall, humidity levels remain steady at 80% for both months. For more detailed information, you can check out San Juan weather in August.
In both July and September, the temperature remains consistent, with a minimum of 24°C (76°F), an average of 28°C (82°F), and a maximum of 32°C (90°F). However, September experiences significantly higher precipitation, totaling 173 mm (6.8 in) over 23 days, compared to July's 87 mm (3.4 in) spread across 18 days. Humidity levels are similar, with July at 80% and September slightly lower at 79%. These factors combine to create a more humid and wetter atmosphere in September. For detailed insights on September weather, visit San Juan weather in September.
In comparing the weather between July and October, both months experience similar temperature ranges, with July averaging 28°C (82°F) and October slightly cooler at 27°C (81°F). However, October tends to be wetter, with 145 mm (5.7 in) of precipitation over 22 days, compared to July's 87 mm (3.4 in) over 18 days. Humidity levels are fairly consistent, hovering around 80% in July and dropping slightly to 78% in October. To learn more about what to expect during this fall month, you can check out San Juan weather in October.
In comparing the weather between July and November, it’s evident that both months offer warm temperatures with only slight differences. July presents a minimum temperature of 24°C (76°F) and an average of 28°C (82°F), reaching a maximum of 32°C (90°F). The month experiences considerable humidity at 80%, alongside 87 mm (3.4 in) of precipitation over 18 days. In contrast, November features slightly cooler temperatures, with a minimum of 23°C (74°F) and an average of 26°C (80°F), while the maximum reaches 31°C (87°F). November sees more rainfall, totaling 106 mm (4.2 in) over 16 days, and a marginally lower humidity of 78%. For more detailed insights on November weather, check out San Juan weather in November.
In comparing the weather between July and December, July tends to be slightly warmer, with average temperatures around 28°C (82°F) and maximum highs reaching 32°C (90°F). The month also experiences higher humidity at 80% and more precipitation, totaling 87 mm (3.4 in) over 18 days. In contrast, December enjoys a milder climate with an average temperature of 26°C (78°F), maximums of 31°C (87°F), and lower humidity at 76%. Precipitation in December is also reduced, totaling 51 mm (2.0 in) over 16 days. For more detailed insights, you can visit San Juan weather in December.
As July unfolds in San Juan, visitors can expect warmer temperatures compared to other months, with an inviting average of 28°C that creates a tropical atmosphere perfect for beach outings. While sunshine reigns, humidity levels hover around 80%, adding a sultry touch to the day, and resulting in sporadic rain, as indicated by about 18 days of precipitation. This blend of warmth and moisture makes July a unique experience for those exploring the vibrant culture and stunning landscapes of Puerto Rico. For a deeper understanding of how these conditions integrate into the broader weather profile, check out San Juan Climate.