Last updated: October 31, 2025
July in Gustavia, Saint Barthélemy, is a vibrant blend of warmth and tropical allure. With average temperatures hovering around 27°C (81°F), and maximums reaching up to 29°C (84°F), visitors can expect balmy days perfect for exploration and relaxation. However, occasional rainfall is common, bringing an average of 80 mm (3.2 in) over 17 days, enhancing the lush green scenery of the island. The humidity level remains high at 83%, creating a classic tropical atmosphere. Whether you're lounging by the beach or enjoying the rich local culture, July offers a delightful experience amid the island's enchanting surroundings.
In July, Gustavia, Saint Barthélemy experiences a delightful tropical climate, with temperatures reflecting the peak of summer bliss. With a minimum temperature of 25°C (77°F) and a maximum reaching up to 29°C (84°F), the warmth is consistent, making it perfect for sun-soaked beach days and vibrant evening gatherings. The average temperature hovers around 27°C (81°F), indicative of a reliably pleasant atmosphere. As the month progresses, the heat gently intensifies, aligning with the subsequent months of August and September, which also maintain similar temperature ranges. This trend underscores the island's inviting warmth, perfect for those seeking to escape into a summer oasis.
In July, Gustavia, Saint Barthélemy experiences a noticeable increase in precipitation, receiving an average of 80 mm (3.2 in) over 17 days. This marks a significant uptick from the previous months, where rainfall ranged from 27 mm to 49 mm. The trend suggests that July, along with August's 86 mm, ushers in the heart of the wet season, culminating in the peak rainfall of 152 mm in September. This pattern indicates a shift towards more humid conditions, as the mix of warm summer temperatures and increased precipitation creates a vibrant and lush environment, underscoring the island's tropical allure.
In July, humidity levels in Gustavia, Saint Barthélemy peak at 83%, marking the highest point of the year. This gradual climb from 77% in the winter months to a sweltering 83% is a clear indication of the tropical climate's influence, with a notable increase throughout the summer. Following July, the humidity slightly decreases to 82% in August before tapering off in the fall months, showcasing a seasonal pattern that emphasizes the balmy, lush atmosphere typical of this Caribbean paradise. The upward trend from early spring through summer highlights a humid yet inviting environment, ideal for those seeking sun-soaked adventures.
In Gustavia, Saint Barthélemy, the UV Index reaches a striking peak in the summer months, with July showcasing a consistent UV Index of 13, falling into the extreme exposure category. This trend of elevated UV levels not only marks July but continues from April through September, where sunscreen is a must for anyone daring to venture outdoors—with a burn time of just 10 minutes! As summer transitions into autumn, there's a slight decrease in UV intensity, dropping to 12 in October before returning to the very high index of 9 during the winter months. Whether you're soaking up the sun on a beach or exploring the island's beauty, staying protected is key. For detailed insights, check the Gustavia UV Index.
UV Risk Categories
July shines brightly in Gustavia, Saint Barthélemy, boasting an impressive 364 hours of sunshine, marking it as one of the sunniest months of the year. Following a remarkable trend, the summer months from May to July consistently deliver abundant sunlight, peaking in July, just before the slightly cooler August, which still maintains a healthy 352 hours. This pattern illustrates the allure of Gustavia during mid-year, with visitors enjoying the warmth and radiance that enhance its picturesque charm. As the year progresses, the sunny hours gradually decline, suggesting that planning a trip during July could be the perfect choice for those seeking the best of the island's tropical appeal.
In Gustavia, Saint Barthélemy, the ** likelihood of sunny weather** in July stands at 50%, offering a balanced mix of sunshine and occasional clouds. This marks a noticeable shift from the preceding months, with June dipping to a low 25% chance of sun. As summer unfolds, July's sunshine probability finds itself nestled between the higher rates seen in spring, like March at 72%, and August, which drops back down to 47%. Notably, late summer months typically average lower than early spring, indicating a transition towards a more temperate climate. With a 50% chance of clear skies, July can still provide plenty of beautiful beach days, making it a vibrant time to experience the island's charm.
In Gustavia, Saint Barthélemy, July marks a continuation of the typically bright summer days, boasting 13 hours of daylight. This trend of extended sunlight begins in June and extends into August, reflecting the peak of the tropical climate where longer days enhance outdoor activities and vibrant sunsets. As the year progresses, daylight gradually tapers back to 12 hours in August, and continues its decline, reminding us of the rhythmic cycle of seasons. From January to March, daylight hovers around 11 to 12 hours, illustrating a steady increase as winter gives way to spring, before reaching its zenith in the heart of summer. The consistent daylight duration throughout the year not only shapes daily life in this island paradise but also paints a captivating picture of nature’s rhythms.
In Gustavia, Saint Barthélemy, July offers a delightful blend of warmth and breezy charm, with an average wind speed of 8.4 m/s (19 mph). This marks a slight increase from the previous month, June, which recorded 8.1 m/s (18 mph), suggesting a transition into the more dynamic summer months. Interestingly, the wind speeds reach their peak during this time, typically tapering off towards the end of summer, as seen in August’s 7.1 m/s (16 mph). Overall, the July winds create an invigorating atmosphere, enticing visitors to embrace outdoor activities while enjoying the stunning coastal views that the island is celebrated for.
Weather in Gustavia varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Gustavia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of July and January, July showcases warmer temperatures, with a minimum of 25°C (77°F) and an average of 27°C (81°F), while January experiences slightly cooler conditions, with a minimum of 23°C (74°F) and an average of 25°C (78°F). July also brings higher humidity at 83% and more precipitation, totaling 80 mm (3.2 in) over 17 days, compared to January's milder humidity of 77% and significantly less rainfall of 35 mm (1.4 in) across 13 days. For more specific insights into January's weather, you can check Gustavia weather in January.
In comparing the weather between July and February, July tends to be warmer and more humid. With temperatures averaging 27°C (81°F) and peaks reaching 29°C (84°F), it offers a steamy tropical experience, while February’s milder average of 25°C (77°F) and maximum temperatures of 26°C (80°F) provide a more comfortable atmosphere. Additionally, July experiences significantly more precipitation, with 80 mm (3.2 in) over 17 days, compared to only 35 mm (1.4 in) over 11 days in February. The humidity is also higher in July at 83%, compared to February’s 77%. For more detailed insights, check Gustavia weather in February.
The weather in July tends to be warmer and more humid compared to March. In July, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F) and a high humidity level of 83%. Additionally, July experiences more precipitation, totaling 80 mm (3.2 in) over 17 days. In contrast, March offers slightly cooler temperatures, with a range from 22°C (73°F) to 26°C (79°F) and an average of 25°C (77°F). The humidity is lower at 77%, and precipitation is significantly less, with only 27 mm (1.1 in) over 10 days. For a detailed look at the weather conditions in March, you can check Gustavia weather in March.
In comparing the weather of July and April, July tends to be warmer and more humid. The average temperature in July is around 27°C (81°F), with minimums of 25°C (77°F) and maximums reaching 29°C (84°F). In contrast, April has slightly cooler temperatures, with an average of 25°C (78°F), a minimum of 23°C (74°F), and a maximum of 27°C (81°F). Additionally, July experiences significantly more precipitation, with 80 mm (3.2 in) over 17 days, while April sees only 34 mm (1.3 in) across 11 days. Humidity levels also rise during July to 83%, compared to 78% in April. For further details on April weather, you can check Gustavia weather in April.
In comparing the weather between July and May, July tends to be slightly warmer with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), while May features a slightly cooler range with temperatures from 23°C (74°F) to 28°C (82°F). July experiences more precipitation, with 80 mm (3.2 in) over 17 days, compared to May's 47 mm (1.8 in) across 12 days. Additionally, humidity is higher in July at 83%, compared to May's 79%. For a detailed overview of conditions during May, refer to Gustavia weather in May.
In comparing the weather between June and July, both months exhibit similar temperature patterns, with minimums around 25°C (77°F) and average highs of 27°C (81°F). However, July tends to be slightly warmer, reaching a maximum of 29°C (84°F) compared to June's peak of 28°C (84°F). Additionally, July experiences more rainfall, with 80 mm (3.2 in) over 17 days, while June has a lower total of 49 mm (1.9 in) over 14 days. Humidity levels are also marginally higher in July at 83%, compared to June's 81%. For more detailed insights into the weather during June, you can check Gustavia weather in June.
In comparing July and August weather, we notice that both months maintain a warm and humid climate, yet there are subtle differences. July features an average temperature of 27°C (81°F) with maximums reaching 29°C (84°F), while August sees a slight increase to an average of 28°C (82°F), though the maximum temperature remains consistent. Precipitation slightly rises from 80 mm (3.2 in) in July to 86 mm (3.4 in) in August, occurring over 17 days in July and 16 days in August. Humidity remains high in both months, with July at 83% and August slightly lower at 82%. For a more detailed look at August weather, you can explore Gustavia weather in August.
In July, the weather is characterized by warm temperatures with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (84°F). The month experiences a total precipitation of 80 mm (3.2 in) spread over 17 days, accompanied by high humidity at 83%. In contrast, September sees a slight increase in average temperature to 28°C (82°F), while the minimum and maximum temperatures remain consistent. However, September is significantly wetter, with 152 mm (6.0 in) of precipitation over 22 days, and humidity levels dropping slightly to 80%. For more detailed information on weather conditions in September, you can visit Gustavia weather in September.
In July, temperatures remain steady with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at 29°C (84°F). The month experiences consistent rain, with 80 mm (3.2 in) of precipitation over 17 days, coupled with high humidity levels at 83%. In contrast, October maintains similar temperatures, with minimums, averages, and maximums nearly identical to July, but sees an increase in rainfall to 113 mm (4.4 in) over 19 days. Humidity in October is slightly lower at 79%. For a more detailed look at the weather in Gustavia during October, visit Gustavia weather in October.
In comparing the weather of July and November, we notice similar average temperatures, with July showing a minimum of 25°C (77°F) and a maximum of 29°C (84°F), while November's temperatures range from 24°C (76°F) to 28°C (83°F). Both months experience high humidity levels, with July at 83% and November slightly lower at 79%. However, November tends to receive more precipitation, totaling 95 mm (3.8 in) over 17 days compared to July's 80 mm (3.2 in) over the same number of days. For more details on what to expect during the month, check out Gustavia weather in November.
In comparing the weather between July and December, we find that both months experience warm temperatures, though July tends to be slightly warmer overall. In July, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F). In contrast, December has a slightly narrower temperature range, with a minimum of 24°C (75°F) and a maximum of 28°C (82°F), averaging 26°C (79°F).
When it comes to precipitation, July sees significantly more rain, with 80 mm (3.2 in) over 17 days, compared to December's 48 mm (1.9 in), also over 17 days. Humidity levels are also relatively high in both months, but July is more humid at 83%, while December has a slightly lower humidity of 78%. For a detailed look at December weather, you can visit Gustavia weather in December.
In July, Gustavia showcases a tropical charm that sets it apart from other months. With average temperatures hovering around 27°C (81°F), the warmth remains inviting, but it's paired with increased humidity levels of 83%, creating a lush, vibrant atmosphere. Visitors can expect some rain, as this month typically sees 17 days of precipitation, totaling around 80 mm (3.2 in). While the summer showers may surprise, they also bring a refreshing break from the heat, making July a unique time to experience the island's natural beauty and lively culture. For a deeper dive into the nuances of Gustavia's climate throughout the year, visit Gustavia Climate.