Last updated: August 21, 2025
June in Saint John's, Antigua and Barbuda brings a warm tropical ambiance, with temperatures averaging around 27°C (80°F) and peaking at a maximum of 28°C (83°F). Visitors can expect a cozy atmosphere, perfect for outdoor activities, while nighttime temperatures dip to a comfortable 24°C (76°F). However, June also sees a fair share of rainfall, with 52 mm (2.0 in) spread across 14 days, resulting in a humidity level of 81%. This combination of warmth and moisture fosters lush greenery and vibrant landscapes, making it a picturesque time to explore this Caribbean gem.
In June, Saint John's, Antigua and Barbuda experiences pleasant temperatures that signal the onset of summer. With a minimum of 24°C (76°F) and an average that rises to 27°C (80°F), the month is characterized by warm and inviting weather. The maximum temperature reaches a comfortable 28°C (83°F), allowing visitors to fully embrace the vibrant outdoor lifestyle. As the year progresses, it becomes clear that June's temperatures start to trend upwards compared to the preceding months, laying the groundwork for the hotter days of July and August. This gradual transition not only enhances the island's charm but also creates a perfect setting for beach activities and exploration of the stunning landscapes.
In June, Saint John's, Antigua and Barbuda experiences a notable increase in precipitation, with 52 mm (2.0 in) of rain falling over 14 days. This marks a steady rise from May’s 49 mm (1.9 in), hinting at the onset of the wetter summer months. As the Caribbean heat intensifies, June's rainfall sets the stage for an even more significant deluge in July and August, where totals jump to 81 mm (3.2 in) and 97 mm (3.8 in), respectively. The consistent increase not only highlights a shift towards a more tropical climate but also serves as a reminder for residents and travelers alike to prepare for the lively summer showers that characterize this beautiful island.
As June arrives in Saint John's, Antigua and Barbuda, humidity levels typically reach 81%, marking a noticeable increase from the preceding months. This steady rise reflects a broader trend throughout the year, where humidity peaks during the summer months, with July and August reaching even higher levels of 84% and 83%, respectively. Following the peak of June, humidity begins to gradually taper off in the fall months, showcasing a seasonal fluctuation. Overall, while January to May sees humidity levels hovering in the high seventies to low eighties, June distinctly ushers in the more humid part of the year, immersing visitors and locals alike in the tropical embrace of the Caribbean climate.
In June, Saint John's, Antigua and Barbuda experiences a notably high UV Index of 13, placing it in the extreme exposure category. This level of UV radiation is consistent with the preceding months from March through May, and highlights a trend where summer months maintain elevated UV levels, with only July surpassing it at 14. As visitors bask in the Caribbean sunshine, precautions are essential, with a burn time of just 10 minutes. The enduring extreme ratings throughout late spring and early summer emphasize the need for effective sun protection. For more details on the UV Index throughout the year, check out Saint John's UV Index.
UV Risk Categories
As June rolls into Saint John's, Antigua and Barbuda, the island basks in 339 hours of golden sunshine, a delightful continuation of the vibrant weather that characterizes this tropical haven. Following a progressively sunny May, which recorded 357 hours of sunlight, June maintains a splendid momentum, though slightly toned down. The warmer months from January through July show a remarkable upward trend, peaking with 361 hours in July, promising not only warmer days but also ample opportunities for outdoor adventures. This seamless blend of sunshine fosters an inviting atmosphere, making June an ideal time to explore the natural beauty and cultural richness of this Caribbean gem. As the year unfolds, the sunshine hours gradually shift, but June stands out as a bright midpoint in the annual calendar, offering visitors a taste of paradise.
June in Saint John's, Antigua and Barbuda, marks a noticeable shift in weather patterns, with a significant drop in the likelihood of sunny days to just 26%. This decline is stark compared to the vibrant sun-soaked months of January through May, where the chances ranged from 49% to 71%. As the island transitions from the dry season, June tends to bring increased cloud cover and occasional rain, making it one of the less sunny months. This trend continues into July and August, where the probabilities of sunshine start to climb again, hinting at a return to more favorable weather as summer progresses.
In Saint John's, Antigua and Barbuda, the progression of daylight hours beautifully reflects the transition from the cooler months into summer. Beginning with a consistent 11 hours of daylight in January and February, the days gradually lengthen as spring approaches, reaching 12 hours in March through May. By June, a notable shift occurs, ushering in 13 hours of bright sunshine—perfect for enjoying the island's stunning beaches and vibrant culture. This extended daylight continues into July before tapering back to 12 hours in August, creating a seasonal rhythm that emphasizes the island's tropical charm. As the year winds down, daylight returns to 11 hours from September to December, bringing a gentle conclusion to the year’s vibrant cycle.
In June, Saint John's, Antigua and Barbuda, experiences a noticeable uptick in wind speed, with averages reaching 8.1 m/s (18 mph). This increase reflects a gradual intensification from the calmer breezes of late spring, suggesting a shift towards more dynamic weather patterns as the summer season approaches. Compared to the preceding months, where winds hovered around 6.5 to 7.5 m/s, June's gentle yet invigorating gusts pave the way for a more refreshing atmosphere, ideal for outdoor activities and beachside relaxation. Interestingly, as the summer unfolds, July sees a slight rise in average wind speeds to 8.3 m/s (19 mph), hinting at a trend of increasing breezes that continue into the heart of the season. This seasonal transition not only enhances the island's vibrant charm but also contributes to the enchanting allure of Antigua's coastal experiences.
Weather in Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January in Saint John show some notable differences in weather conditions. June typically experiences slightly higher temperatures, with average highs around 28°C (83°F) compared to January’s maximum of 27°C (80°F). Additionally, June has higher humidity at 81%, contributing to a more tropical feel, while January's humidity is a bit lower at 77%. Precipitation also varies, with June receiving 52 mm (2.0 in) over approximately 14 days, while January sees less rain at 34 mm (1.4 in) over about 12 days. For more detailed information, you can check out Saint John's weather in January.
In comparing the weather in June and February, June typically sees slightly warmer temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), while February has a minimum of 22°C (72°F) and an average of 25°C (77°F). Max temperatures in June reach up to 28°C (83°F), compared to February's peak of 26°C (80°F). Additionally, June experiences more precipitation, totaling 52 mm (2.0 in) over 14 days, compared to February's 36 mm (1.4 in) under similar conditions. Humidity levels are also higher in June at 81%, while February maintains a slightly lower humidity of 76%. For a more detailed look at February’s weather, visit Saint John's weather in February.
In comparing the weather of June and March, June typically experiences slightly warmer temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), compared to March's minimum of 23°C (73°F) and average of 25°C (77°F). Both months have high humidity levels, but June is a bit more humid at 81%, while March sits at 76%. Precipitation is more prevalent in June, with 52 mm (2.0 in) occurring over 14 days, compared to March’s 31 mm (1.2 in) over 11 days. For more specifics on March's climate, visit Saint John's weather in March.
In comparing the weather of June and April, June exhibits slightly warmer temperatures, with a minimum of 24°C (76°F) and an average of 27°C (80°F), while April features a minimum of 23°C (74°F) and an average of 25°C (78°F). Both months experience similar maximum temperatures, but June sees increased precipitation, totaling 52 mm (2.0 in) compared to April's 38 mm (1.5 in), despite both months having rainfall on 14 days. Furthermore, humidity is marginally higher in June at 81% compared to 78% in April. For a more detailed look at April’s weather, you can visit Saint John's weather in April.
In comparing the weather of June and May, we observe that both months have similar temperature ranges, with June having a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 28°C (83°F), while May closely mirrors these figures with a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (82°F). Precipitation is slightly higher in June at 52 mm (2.0 in) over 14 days compared to May's 49 mm (1.9 in) over 15 days. Additionally, humidity is marginally higher in June at 81%, compared to 79% in May. For a detailed look at the weather patterns of May, you can visit Saint John's weather in May.
In comparing the weather between June and July, July tends to be slightly warmer with average temperatures reaching 27°C (81°F) and maximums of 29°C (84°F), compared to June's maximum of 28°C (83°F). Both months experience high humidity, but July sees a slight increase at 84% compared to June's 81%. Additionally, precipitation is higher in July, with 81 mm (3.2 in) spread over 19 days, whereas June recorded 52 mm (2.0 in) over 14 days. For a more detailed overview, you can check out Saint John's weather in July.
In comparing the weather conditions of June and August, both months exhibit warm temperatures, with June having a minimum of 24°C (76°F) and an average of 27°C (80°F), while August sees a slightly higher minimum of 25°C (78°F) and a similar average of 27°C (82°F). The maximum temperatures also reflect this gradual increase, with June peaking at 28°C (83°F) compared to August's 29°C (84°F). However, August experiences significantly more precipitation, totaling 97 mm (3.8 in) over 18 days, in contrast to June's 52 mm (2.0 in) over 14 days. Humidity levels remain high in both months, with August at 83% just above June's 81%. For more detailed information, you can check Saint John's weather in August.
In comparing the weather between June and September, we observe that June typically has a slightly lower temperature range, with average temperatures around 27°C (80°F) compared to September’s average of 28°C (82°F). Both months experience high humidity levels, with June at 81% and September slightly lower at 80%. However, September tends to be much wetter, receiving 144 mm (5.7 in) of precipitation over 21 days, while June sees only 52 mm (2.0 in) spread across 14 days. For a more detailed look at September's climate, you can visit Saint John's weather in September.
June and October both feature warm temperatures, with average highs around 27°C (81°F) and minimal variation in overall warmth. However, October tends to be slightly warmer, with a maximum temperature of 29°C (85°F) compared to June's peak of 28°C (83°F). Precipitation is notably higher in October, with 109 mm (4.3 in) spread over 18 days, contrasted with June's 52 mm (2.0 in) over 14 days. Despite the increased rainfall in October, the humidity remains fairly consistent, with June at 81% and October at 79%. For more detailed information, check out Saint John's weather in October.
June and November share a similar temperature profile, with both months featuring minimum temperatures of 24°C (76°F), average temperatures of 27°C (80°F), and maximum temperatures of 28°C (83°F). However, November tends to be wetter, receiving 94 mm (3.7 in) of precipitation over 17 days compared to June's 52 mm (2.0 in) over 14 days. Humidity levels are comparable, with November at 80% and June slightly higher at 81%. For more detailed information on November weather, you can check out Saint John's weather in November.
In comparing the weather between June and December, both months exhibit warm temperatures, with minimums around 24°C (75°F-76°F) and maximums reaching 28°C (82°F-83°F). June tends to be slightly warmer on average at 27°C (80°F), while December averages at 26°C (79°F). Precipitation levels are similar, with both months receiving around 52 mm (2.0-2.1 in), but December experiences a higher number of rainy days, totaling 18 compared to June's 14. Humidity remains relatively high in both months, with June at 81% and December slightly lower at 78%. For a more detailed look at December weather, you can visit Saint John's weather in December.
As June arrives in Saint John, the weather showcases a delightful shift, with warm temperatures averaging around 27°C (80°F) that are perfect for outdoor activities and beach outings. However, it's also a month of increased humidity at 81%, creating a tropical feel that can be both invigorating and a bit steamy. With about 14 days of precipitation totaling 52 mm (2.0 in), June often sees sporadic showers that refresh the landscape but also remind residents and visitors alike of the island’s vibrant climate. This combination of warmth and moisture sets June apart from the cooler, drier months, making it an ideal time to experience the lush beauty of Saint John. For more on how weather shapes life in this beautiful region, check out Saint John's Climate.