Last updated: October 31, 2025
In December, Gustavia, Saint Barthélemy welcomes visitors with a delightful tropical climate characterized by maximum temperatures reaching 28°C (82°F) and an average of 26°C (79°F). The sea breezes provide a refreshing counterbalance to the minimum temperature of 24°C (75°F). This enchanting month experiences 48 mm (1.9 in) of rainfall over approximately 17 days, contributing to a lush environment. With an average humidity level of 78%, the atmosphere remains vibrant yet comfortable, making December an inviting time to explore the island's natural beauty and idyllic beaches.
In Gustavia, Saint Barthélemy, December marks a delightful transition into the cooler winter months, with temperatures showcasing a mild and inviting climate. The average temperature hovers around a comfortable 26°C (79°F), while daily lows settle at a pleasant 24°C (75°F) and highs peak at 28°C (82°F). This month maintains a consistency seen throughout the year, with temperatures gradually increasing from January to November before leveling off, creating a perfect atmosphere for beachgoers and outdoor enthusiasts alike. With the festive spirit in full swing, December offers an ideal backdrop for exploring the island's vibrant culture, all while basking in the warmth of the Caribbean sun.
In December, Gustavia experiences a notable shift in its precipitation patterns, receiving an average of 48 mm (1.9 in) of rain over 17 days. This amount is lower than the peak rainy months of September (152 mm) and October (113 mm), yet it remains consistent with November's precipitation, reflecting the tail end of the wet season. As the year draws to a close, December's rainfall serves as a reminder of the region's tropical climate, bringing lush greenery and rejuvenating the landscape before the drier months ahead. Overall, the rainfall trend reveals a gradual decline from late summer's heavy showers to the more moderate precipitation typical of the winter season.
In December, Gustavia, Saint Barthélemy, experiences a transition in humidity levels, settling at 78%. This is a slight dip from the peak of 83% in July but aligns closely with the consistent trend observed in the earlier months, where humidity hovered between 77% and 79%. As the year draws to a close, the humidity remains relatively stable, showcasing a tropical backdrop that complements the island’s warm climate. Visitors can expect a comfortable atmosphere, slightly more humid than the beginning of the year, but still ideal for enjoying the stunning beaches and vibrant local culture.
In December, Gustavia experiences a UV Index of 9, indicating a very high level of sun exposure, which means that careful precautions should be taken to prevent sunburn with a burn time of just 15 minutes. This marks a shift from the extreme levels seen during the peak months from February to October, where the UV Index consistently hovers around 11 to 13. Although December sees a drop to a more manageable level, the risks remain significant, making sun protection essential for both residents and visitors. As the year winds down, and the holiday season approaches, awareness of UV levels, such as those presented in this month's data, ensures everyone can enjoy the beautiful Saint Barthélemy sunshine without compromise. For more detailed information, visit Gustavia UV Index.
UV Risk Categories
As December unfolds in Gustavia, Saint Barthélemy, the island basks in approximately 324 hours of glorious sunshine, capping off a year rich in warm rays. This month experiences a notable dip from the sun-soaked peaks of May and July, which each boast over 360 hours, yet still delivers a delightful luminosity that invites visitors to indulge in its serene beaches and vibrant local culture. Interestingly, December’s sunlight surpasses the less bright November, suggesting a cheerful transition into the new year. Throughout the months, March and April maintain an impressive and consistent glow, offering the highest hours of sunshine, while the steady trend of abundant light fuels the island's charm and allure all year round.
As December rolls into Gustavia, Saint Barthélemy, there's a promising 65% chance of sunny weather, continuing a trend of increasing likelihood as the year progresses. Following a relatively brighter November at 67%, the holiday month offers a delightful respite from the rainy season with a return to sunnier days. This upward trajectory from the cooler months of June and July, which dip to just 25% and 50% respectively, showcases December as an appealing destination for sun-seekers looking to bask in the tropical charm of the Caribbean. Overall, while December does see a slight decrease from the peak sunny months of February and March, visitors can still expect a lovely blend of warmth and sunshine as the year comes to a close.
In Gustavia, Saint Barthélemy, the patterns of daylight duration reveal a rhythmic ebb and flow throughout the year. From January to April, the days gradually lengthen, peaking at 13 hours of daylight during the vibrant summer months of June and July. As summer transitions to fall, daylight begins to wane, settling back to 12 hours in August and September and then tapering off to 11 hours by December. This steady cycle not only highlights the island's tropical charm but also reflects the consistent warmth that beckons visitors year-round, with December presenting a balanced light that still captures the essence of sunny Caribbean days.
As December unfolds in Gustavia, Saint Barthélemy, the winds become more invigorating, averaging 8.0 m/s (18 mph), which marks an increase compared to the preceding months. Just as the festive spirit begins to take hold, the breezy conditions create a delightful atmosphere—ideal for sailing, beach outings, and outdoor gatherings. Interestingly, this month also follows a general trend of rising wind speeds from the calmer start of the year in January, peaking in July at 8.4 m/s (19 mph) before a slight decline in the autumn months. With December’s welcoming winds, there’s an inviting charm that complements the island's enchanting holiday vibe, making it the perfect time for both relaxation and adventure among the beautiful coastal landscapes.
Weather in Gustavia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Gustavia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather tends to be slightly warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F). This month also experiences more rain, with a total precipitation of 48 mm (1.9 in) spread over 17 days, and humidity sits at 78%. Conversely, January is a touch cooler, with temperatures averaging between 23°C (74°F) and 27°C (81°F). The precipitation decreases to 35 mm (1.4 in) over 13 days, and humidity slightly drops to 77%. For more detailed insights into January weather, you can visit Gustavia weather in January.
In December, the weather tends to be slightly warmer with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F). This month also experiences higher precipitation levels, with 48 mm (1.9 inches) falling over approximately 17 days. Humidity remains relatively high at 78%.
In contrast, February brings cooler temperatures, with averages from 22°C (72°F) to 26°C (80°F). The rainfall decreases to about 35 mm (1.4 inches) over just 11 days, and humidity is marginally lower at 77%. For a more detailed look at the specific weather conditions in February, you can check Gustavia weather in February.
In December, the weather is slightly warmer with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), accompanied by higher humidity at 78%. The month experiences more precipitation, totaling 48 mm (1.9 in) over 17 days. In contrast, March sees a mild drop in temperature, with average values between 22°C (73°F) and 26°C (79°F), and significantly reduced precipitation at 27 mm (1.1 in) over just 10 days. The humidity remains similar at 77%. For more detailed information on March weather, visit Gustavia weather in March.
December and April in Gustavia display mild and relatively humid weather, though April tends to be slightly more temperate. In December, the average temperature ranges from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), accompanied by 48 mm (1.9 in) of precipitation over 17 days. In contrast, April offers a bit of relief with an average temperature from 23°C (74°F) to 27°C (81°F) and less rainfall totaling 34 mm (1.3 in) over just 11 days. Both months maintain a consistent humidity level of 78%, providing a tropical feel year-round. For more details, check out Gustavia weather in April.
In December, the weather remains warm with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), averaging around 26°C (79°F). This month experiences higher precipitation than May, with about 48 mm (1.9 in) spread over 17 days, and humidity levels sitting at 78%. In contrast, May boasts similar average temperatures but slightly lower precipitation at 47 mm (1.8 in) over just 12 days, accompanied by a marginally higher humidity of 79%. For more detailed information about weather patterns, particularly for May, check out Gustavia weather in May.
When comparing the weather in December and June, both months exhibit warm temperatures, with December having a minimum of 24°C (75°F) and an average of 26°C (79°F), while June sees slightly higher figures with a minimum of 25°C (76°F) and an average of 27°C (81°F). Both months experience similar levels of precipitation, with December receiving 48 mm (1.9 in) over 17 days and June slightly higher at 49 mm (1.9 in) over 14 days. Humidity levels are comparable as well, with December at 78% and June at 81%. For a closer look at the weather specifics in June, you can check out Gustavia weather in June.
December and July both experience warm temperatures, with December ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), while July's temperatures are slightly higher, with a minimum of 25°C (77°F) and a maximum of 29°C (84°F). However, July also sees more precipitation, with 80 mm (3.2 in) falling over 17 days compared to December's 48 mm (1.9 in) during the same number of days. Humidity levels are slightly higher in July at 83% compared to December's 78%, adding to the overall muggy feeling. For more detailed insights on July weather, check this link: Gustavia weather in July.
December and August both showcase warm temperatures, but there are some notable differences in their weather patterns. In December, the temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), with an average of 26°C (79°F). The month experiences 48 mm of precipitation over 17 days and has a humidity level of 78%. In contrast, August is slightly warmer, with temperatures ranging from 25°C (77°F) to 29°C (84°F), averaging at 28°C (82°F). This month sees a higher total precipitation of 86 mm over 16 days and a humidity level of 82%. For more detailed insights, you can check Gustavia weather in August.
In comparing the weather of December and September, it's evident that December is slightly cooler and drier. In December, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (82°F) with an average of 26°C (79°F), while September sees higher temperatures, ranging from 25°C (77°F) to 29°C (85°F) and an average of 28°C (82°F). Precipitation also plays a significant role, with December receiving 48 mm (1.9 in) over 17 days compared to September's much wetter conditions of 152 mm (6.0 in) over 22 days. Humidity levels are comparable, hovering around 78% in December and 80% in September. For more detailed information, you can check Gustavia weather in September.
In comparing the weather between December and October, December tends to be slightly cooler with an average temperature of 26°C (79°F), compared to October's average of 27°C (81°F). While both months experience high humidity around 78-79%, October sees significantly more rainfall, with 113 mm (4.4 in) over 19 days, compared to December's 48 mm (1.9 in) on 17 days. Overall, December brings a bit of relief from the higher precipitation typical of October. For more detailed weather information, you can check Gustavia weather in October.
In comparing the weather between November and December, both months exhibit warm temperatures, with December showing slightly lower averages. December sees a minimum temperature of 24°C (75°F) and an average of 26°C (79°F), while November has a slightly higher average of 27°C (80°F). Additionally, precipitation is notably reduced in December, totaling 48 mm (1.9 in) compared to November's 95 mm (3.8 in), even though both months experience 17 days of rainfall. Humidity levels remain high, with December at 78% and November at 79%. For more specific information, you can check Gustavia weather in November.
As December unfolds in Gustavia, the weather takes on a distinct character, marked by warm days and a higher chance of precipitation compared to the preceding months. With temperatures lingering around a comfortable average of 26°C (79°F), this period invites visitors to bask in the island's tropical embrace while also preparing for the occasional rain shower, as December sees increased humidity levels. The vibrant atmosphere is complemented by lush greenery nourished by about 48 mm of rainfall spread over 17 days. For those planning to explore this enchanting locale, understanding the nuances of December's climate can enhance their experience. For more information, visit Gustavia Climate.