Last updated: August 21, 2025
In Saint John's, Antigua and Barbuda, December welcomes visitors with a pleasant tropical climate characterized by daily maximum temperatures reaching up to 28°C (82°F) and an average of 26°C (79°F). Evenings are comfortably warm, with minimum temperatures around 24°C (75°F). While this month sees a moderate precipitation total of 52 mm (2.1 in) spread over 18 days, the humidity level hovers around 78%, creating a lush, vibrant atmosphere. December is an ideal time to explore the island’s natural beauty while enjoying the warmth of the Caribbean.
In December, Saint John's, Antigua and Barbuda experiences delightful tropical warmth, with temperatures gradually declining from the sizzling peak of summer months. The minimum temperature hovers around a comfortable 24°C (75°F), while the average settles at a pleasant 26°C (79°F), and highs reach a balmy 28°C (82°F). This month marks the onset of cooler breezes, yet the warmth remains inviting, perfect for sun-seekers and holiday festivities. Overall, December offers a harmonious blend of warmth and moderate humidity, creating an ideal climate for beach outings and exploration of this Caribbean paradise.
In Saint John's, Antigua and Barbuda, December marks a transitional month with precipitation levels reaching approximately 52 mm (2.1 in), spread across 18 days of rainfall. Compared to the preceding months, which often see heavier downpours—particularly in September with a notable 144 mm—December represents a gradual shift towards drier weather as the year comes to a close. While the rainfall is lighter than during the peak of the wet season, it still contributes to the region’s lush landscapes. This month’s precipitation is on par with the rainfall in June and reflects a consistent pattern where early winter brings moderate moisture. Overall, December’s weather offers a delightful balance, allowing for both the vibrant greenery of the countryside and the charm of the holiday season to shine through.
In December, Saint John's, Antigua and Barbuda, experiences a humidity level of 78%, marking a slight decrease from the higher levels of the summer months. The trend shows an overall increase in humidity from January's 77%, reaching a peak of 84% in July, before gradually tapering off. As the year winds down, the humidity levels remain relatively stable, averaging around the upper 70s to low 80s. This December's figure, while still on the humid side, reflects a comforting cooling transition as the island moves into the drier months of January and February.
In December, the UV Index in Saint John's, Antigua and Barbuda returns to a very high category, measuring 9 with a suggested burn time of 15 minutes. This trend aligns with January's UV conditions, indicating a slight reprieve from the more extreme levels experienced during the peak months from February to October, where indices soared between 11 and 14 and burn times shrank to just 10 minutes. With November also recording a UV Index of 9, December marks a transitional period as we approach the cooler months, reminding residents and visitors alike to remain vigilant about sun protection. For more insights on UV exposure in this stunning Caribbean destination, check out Saint John's UV Index.
UV Risk Categories
In December, Saint John's, Antigua and Barbuda enjoys an impressive 325 hours of sunshine, contributing to its reputation as a sun-soaked paradise. As the year winds down, the island showcases a consistent trend of abundant sunlight, with December's hours notably higher than those in the preceding months of November (308 hours) and October (318 hours). This surge in sunshine not only highlights the region's appeal during the festive season but also serves as a warm invitation for travelers seeking to escape winter's chill. Following the sunnier months ahead in the form of vibrant January (262 hours) to December, Antigua's skies remain a brilliant testament to its tropical charm, making it an enticing destination for holiday revelers.
When considering the likelihood of sunny weather in December in Saint John's, Antigua and Barbuda, the outlook appears quite promising with a 67% chance of sunshine. This figure reflects a noteworthy trend as December sits favorably between the wetter months of June and July, which show significant drops in sunshine probability at 26% and 50%, respectively. Furthermore, December's statistics are slightly below the peak month of February, which boasts a 71% chance, yet it remains higher than April and May. Overall, December offers a delightful transition into the New Year, favorably aligning with travelers seeking warm, sunny escapes before the peak tourist season in the early months of the year.
In Saint John's, Antigua and Barbuda, the daylight duration experiences a subtle ebb and flow throughout the year, reflecting the island's tropical climate. December sees approximately 11 hours of daylight, a continuation of the shorter days that began in October. This consistent 11-hour daylight pattern lingers through January and February, creating a cozy, sun-kissed atmosphere perfect for festive gatherings and beach outings. As spring approaches in March, the daylight begins to extend, reaching up to 12 hours by mid-year, peaking at 13 hours during the summer months of June and July. After this peak, daylight gradually tapers off again, returning to the familiar 11-hour rhythm by the end of the year. This cyclical pattern not only signifies the passage of time but also enhances the island's vibrant rhythms of life, inviting residents and visitors alike to savor each sunlit day.
As December arrives in Saint John's, Antigua and Barbuda, the island experiences a refreshing breeze with an average wind speed of 7.9 m/s (18 mph). This marks a notable increase from the gentle winds of November and echoes the slightly elevated gusts of earlier months like June and July. Throughout the year, wind patterns fluctuate: February often showcases the highest speeds at 9.2 m/s (21 mph), while September tends to be the calmest with only 5.2 m/s (12 mph). As the year transitions into its final month, December's winds invite locals and visitors alike to embrace outdoor activities against the backdrop of the stunning Caribbean landscape, making it a vibrant time to enjoy the natural beauty of the island.
Weather in Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January display similar warm weather patterns, but January tends to be slightly cooler and drier. In December, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), accompanied by an average of 26°C (79°F) and substantial precipitation of 52 mm (2.1 in) over 18 rainy days. In contrast, January sees a minor drop in temperatures, with a minimum of 23°C (73°F) and a maximum of 27°C (80°F), averaging 25°C (78°F) and experiencing less rainfall, totaling 34 mm (1.4 in) over 12 days. Humidity remains fairly consistent, at 78% in December and 77% in January. For more details, you can check Saint John's weather in January.
December and February exhibit similar warm climates, yet with some notable differences in weather patterns. In December, temperatures range from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), with an average temperature of 26°C (79°F). This month also experiences higher precipitation levels at 52 mm (2.1 in) over 18 days, contributing to a humidity level of 78%. In contrast, February sees slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 26°C (80°F), leading to a lower average temperature of 25°C (77°F). Precipitation decreases to 36 mm (1.4 in) over 14 days, resulting in a marginally lower humidity of 76%. For more information, you can check Saint John's weather in February.
In December, the weather tends to be slightly warmer, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F) and an average of 26°C (79°F). This month also experiences a higher amount of precipitation, totaling 52 mm (2.1 in) over approximately 18 days, and humidity is around 78%. In contrast, March sees slightly cooler temperatures with a minimum of 23°C (73°F) and a maximum of 26°C (80°F), resulting in an average of 25°C (77°F). Precipitation in March is less prevalent, amounting to 31 mm (1.2 in) over 11 days, with a marginally lower humidity of 76%. For a more detailed look, you can check Saint John's weather in March.
In December, the weather in Saint John is characterized by slightly warmer temperatures, with a minimum of 24°C (75°F) and an average of 26°C (79°F), while April experiences a marginally cooler minimum of 23°C (74°F) and an average of 25°C (78°F). Both months see relatively high humidity levels of around 78%, contributing to a tropical feel. However, December tends to be wetter, with 52 mm (2.1 in) of precipitation over 18 days, compared to April's 38 mm (1.5 in) across 14 days. For more insights on April weather specifics, visit Saint John's weather in April.
In both December and May, temperatures remain relatively stable, with minimums around 24°C (75°F), average temperatures at 26°C (79°F), and maximums reaching 28°C (82°F). However, December experiences slightly higher precipitation, with 52 mm (2.1 in) spread over 18 days, compared to May's 49 mm (1.9 in) over 15 days. Humidity also remains comparable, with December at 78% and May just a notch higher at 79%. For a detailed comparison of weather in May, you can check Saint John's weather in May.
In comparing the weather of December and June, both months showcase similar temperature ranges, with December experiencing a minimum of 24°C (75°F) and an average of 26°C (79°F), while June has slightly higher averages, starting at 24°C (76°F) and averaging 27°C (80°F). Both months receive comparable levels of precipitation, with 52 mm (2.1 in) in December and 52 mm (2.0 in) in June, though December has slightly more days of rain, totaling 18 compared to June’s 14 days. Additionally, humidity levels are marginally different, with December at 78% and June at 81%. For more specific details on June weather, you can visit Saint John's weather in June.
In December, temperatures in Saint John's 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 52 mm (2.1 in) of precipitation spread over about 18 days, with humidity levels sitting at 78%. In contrast, July sees slightly warmer weather, with temperatures starting at a minimum of 25°C (78°F) and peaking at 29°C (84°F), averaging 27°C (81°F). Rainfall in July is higher, totaling 81 mm (3.2 in) over 19 days, and the humidity rises to 84%. For a more detailed look, you can check Saint John's weather in July.
December and August in Saint John present a warm tropical climate, though with notable differences in weather conditions. In December, the minimum temperature averages around 24°C (75°F) and peaks at 28°C (82°F), accompanied by a lower precipitation level of 52 mm (2.1 in) over 18 days. Conversely, August sees slightly higher temperatures, with a minimum of 25°C (78°F) and a maximum of 29°C (84°F), along with increased rainfall measuring 97 mm (3.8 in), also over 18 days. The humidity remains relatively high in both months, at 78% in December and 83% in August, adding to the tropical feel. For more detailed information, you can refer to Saint John's weather in August.
In comparing the weather of December and September, we find noteworthy differences in temperatures and precipitation. December tends to be slightly cooler, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), while September usually sees a warmer range with minimums of 25°C (77°F) and maximums reaching 29°C (85°F). Additionally, September experiences significantly higher precipitation, averaging 144 mm (5.7 in) over 21 days compared to December's 52 mm (2.1 in) over 18 days. Humidity levels remain fairly consistent, with September at 80% and December at 78%. For more detailed information, you can check Saint John's weather in September.
In comparing the weather of December and October, both months exhibit warm temperatures, but December is slightly cooler with average highs of 28°C (82°F) compared to October's 29°C (85°F). The minimum temperatures are also a touch lower in December, averaging 24°C (75°F), while October starts at 25°C (77°F). Precipitation levels differ notably; December sees a total of 52 mm (2.1 in) over 18 days, while October experiences significantly more rain, with 109 mm (4.3 in) across the same number of days. Humidity levels remain comparable, with December at 78% and October slightly higher at 79%. For more detailed information, check out Saint John's weather in October.
In comparing the weather of December and November, we find that both months maintain similar temperature ranges, with December showing a slight decrease in average temperature—26°C (79°F) compared to November's 27°C (80°F). While maximum temperatures remain consistent at around 28°C (82°F), December experiences a reduction in precipitation, receiving only 52 mm (2.1 in) over 18 days, compared to November's higher total of 94 mm (3.7 in) over 17 days. Humidity levels are also slightly lower in December at 78%, making it a bit more comfortable than the 80% humidity recorded in November. For those looking for specifics about the weather in November, you can check out Saint John's weather in November.
December in Saint John brings a delightful transition into the heart of the tropical dry season. With a pleasant average temperature around 26°C (79°F), it marks a slight cooling compared to the peak warmth of previous months. While the air remains moderately humid at 78%, the noticeable increase in precipitation days hints at the lingering rain from the wet season. Nevertheless, December is a lively time, as tourists flock to experience the festive atmosphere amid the island's natural beauty. For more insights on what to expect throughout the year, check out Saint John's Climate.