Last updated: August 21, 2025
May in Saint John's, Antigua and Barbuda brings warm, inviting temperatures, with daily highs averaging around 28°C (82°F) and lows dipping to a comfortable 24°C (75°F). The overall temperature hovers around 26°C (79°F), creating a pleasant atmosphere for outdoor activities. However, humidity levels can be high at 79%, contributing to a tropical feel. This month also sees approximately 49 mm (1.9 in) of rainfall spread over 15 days, making it a time of occasional showers amidst the sunshine. Whether you're exploring the vibrant culture or relaxing on the stunning beaches, May offers a unique blend of warmth and refreshing rain.
In May, Saint John's, Antigua and Barbuda begins to warm noticeably, with temperatures reflecting the steady rise into the summer months. The minimum temperature sits comfortably at 24°C (75°F), while the average is a pleasant 26°C (79°F), peaking at a maximum of 28°C (82°F). This slight increase from April suggests a trend towards warmer days, inviting visitors to enjoy the vibrant outdoor lifestyle that the Caribbean is known for. As the month progresses, you'll likely find yourself basking in the sun, with balmy evenings perfect for leisurely strolls or cultural explorations under the stars.
May in Saint John's, Antigua and Barbuda, marks a noticeable shift in the weather as precipitation levels rise. With an average rainfall of 49 mm (1.9 in) occurring over 15 days, May sets the stage for the wetter months ahead. This increase follows the steady rainfall of April, which recorded 38 mm (1.5 in), suggesting a pattern of escalating precipitation as the region transitions into the peak of its rainy season. June continues this trend with slightly higher rainfall at 52 mm (2.0 in), hinting at the incoming tropical conditions. Overall, May serves as a bridge to the more robust deluges of summer, paving the way for lush landscapes in this beautiful island destination.
May in Saint John's, Antigua and Barbuda, marks a notable transition in humidity levels, with an average of 79%. This month typically sees a slight increase from April's 78%, indicating the onset of a more humid season that will peak in the summer months ahead. The gradual rise from 77% in January to the 81% recorded in June reflects the island's characteristic tropical climate. As temperatures climb, residents and visitors alike can expect the humidity to enhance the warmth, creating a lush atmosphere that aligns perfectly with the vibrant Caribbean lifestyle. This trend continues into the summer, culminating in the highest levels in July at 84%, making May a pivotal month in the rhythm of Saint John's weather patterns.
In May, Saint John's experiences a UV Index of 13, marking it as an extreme exposure month with a burn time of just 10 minutes. This trend of high UV levels continues from April, indicating a consistent intensity in sun exposure as the island moves deeper into the spring. As temperatures rise and sun rays strengthen, residents and visitors alike should remain vigilant about sun protection throughout the month. Notably, this extreme UV pattern persists into June and July, emphasizing the importance of safeguarding your skin during these sun-drenched days. For a comprehensive overview of UV levels throughout the year, check out Saint John's UV Index.
UV Risk Categories
May brings an impressive 357 hours of sunshine to Saint John's, Antigua and Barbuda, marking it as one of the sunniest months of the year. This sunny spell follows a steady ascent from April's 343 hours, reflecting the island's beautiful transition into late spring. With continued brightness in June and July, where sunshine peaks at 361 hours, it's clear that the warmth of May lays the foundation for an inviting summer. The progressive increase from the beginning of the year—starting at 262 hours in January—highlights a delightful trend, making May the perfect time to soak up the sun and enjoy the vibrant life that Antigua has to offer.
In Saint John's, Antigua and Barbuda, May presents a 49% chance of sunny weather, marking a notable drop from the sunnier months of January through March, which boast sun probabilities ranging from 58% to 71%. As the island transitions from the more radiant April, which has a 43% chance of sunshine, May's weather can often feel a bit unpredictable. This mid-year point is less favorable than both the preceding and succeeding months, as June further diminishes the chance to 26%. Despite May's somewhat cloudy disposition, the overall trends suggest that sunny days are still a possibility, nestled between the emerging summer rains, making it a noteworthy time for travelers seeking a blend of sun and fun.
In Saint John's, Antigua and Barbuda, the rhythm of daylight unfolds beautifully throughout the year. The year begins with 11 hours of daylight in January and February, setting a consistent tone. As spring ushers in March and April, daylight gently increases to 12 hours, creating an inviting atmosphere. May maintains this 12-hour daylight, suggesting a pleasant blend of warmth and vibrancy as the island transitions towards summer. Come June and July, daylight peaks at 13 hours, offering idyllic conditions for sun-soaked adventures. As summer wanes in August and September, daylight returns to 12 hours, allowing residents and visitors to enjoy the lingering warmth. Finally, as the year draws to a close, daylight returns to 11 hours in October, continuing into the last months of the year. This graceful ebb and flow of daylight create a captivating and balanced climate, perfect for both relaxation and exploration.
In Saint John's, Antigua and Barbuda, May brings a gentle breeze with an average wind speed of 7.4 m/s (16 mph), creating a pleasant atmosphere perfect for outdoor activities. This month sees a slight uptick from April's softer winds, which averaged 6.5 m/s (15 mph). As we transition into the summer months, a gradual increase is evident, with June reaching 8.1 m/s (18 mph). Overall, the wind patterns reflect a dynamic coastal climate, where May offers a harmonious blend of refreshing air without the higher gusts typical of peak summer. This makes it an ideal time for sailing, beach outings, and enjoying the island's stunning vistas.
Weather in Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, we see that both months offer warm temperatures, but May tends to be slightly warmer. In May, the minimum temperature is around 24°C (75°F), with an average of 26°C (79°F) and a maximum of 28°C (82°F). In contrast, January's temperatures are a bit cooler, with minimums of 23°C (73°F), averages of 25°C (78°F), and maximums of 27°C (80°F). Precipitation levels are higher in May, with 49 mm (1.9 in) spread over 15 days compared to January's 34 mm (1.4 in) over 12 days. Additionally, humidity is relatively high in both months, with May slightly higher at 79%, compared to January's 77%. For more details, you can visit Saint John's weather in January.
In comparing the weather between May and February, we find that May typically experiences slightly higher temperatures, with average highs reaching 28°C (82°F) compared to February's maximum of 26°C (80°F). Additionally, May sees more precipitation, totaling 49 mm (1.9 in) over about 15 days, while February has a lower rainfall of 36 mm (1.4 in) over 14 days. Humidity levels are also a bit higher in May at 79% compared to February's 76%. For more details on February's weather in Saint John, you can refer to this link: Saint John's weather in February.
In comparing the weather between May and March, May tends to be slightly warmer, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F), while March has a narrower range with temperatures between 23°C (73°F) and 26°C (80°F). Additionally, May experiences more precipitation, totaling 49 mm (1.9 in) over 15 days, compared to March's 31 mm (1.2 in) over 11 days. Humidity levels are also slightly higher in May at 79%, compared to 76% in March. For more detailed insights on March weather, you can check Saint John's weather in March.
In comparing the weather between April and May, we find that both months are quite similar in temperature, with May slightly warmer, recording an average of 26°C (79°F) compared to April's 25°C (78°F). However, May experiences a bit more precipitation, totaling 49 mm (1.9 in) over 15 days, while April has 38 mm (1.5 in) across 14 days. Additionally, humidity levels are very close, with May at 79% and April at 78%. Overall, May brings slightly warmer temperatures and more rainfall than April, making the transition into the late spring season noticeable. For more specifics on April's weather, you can check Saint John's weather in April.
In May, the weather features a minimum temperature of 24°C (75°F) and an average of 26°C (79°F), peaking at a maximum of 28°C (82°F). The month experiences around 49 mm (1.9 in) of precipitation over 15 days, with humidity levels at 79%. However, in June, temperatures remain relatively stable with a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 28°C (83°F). Precipitation slightly increases to 52 mm (2.0 in) across 14 days, while humidity rises to 81%. For more details on the weather in June, you can check Saint John's weather in June.
In May, 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 sees about 49 mm (1.9 in) of rainfall over approximately 15 days, accompanied by a humidity level of 79%. In contrast, July experiences slightly warmer temperatures, with a minimum of 25°C (78°F), an average of 27°C (81°F), and a maximum of 29°C (84°F). The precipitation in July increases significantly to 81 mm (3.2 in) over 19 days, and the humidity also rises to 84%. For more details on July's conditions, you can check Saint John's weather in July.
In comparing the weather of May and August, both months show warm temperatures, with May averaging around 26°C (79°F) and August slightly warmer at an average of 27°C (82°F). May features a minimum temperature of 24°C (75°F) and a maximum of 28°C (82°F), while August has a minimum of 25°C (78°F) and a maximum of 29°C (84°F). However, August experiences more rainfall, with a total of 97 mm (3.8 in) over 18 days, compared to May's 49 mm (1.9 in) over 15 days. Humidity levels are also marginally higher in August at 83%, compared to 79% in May. For more details, you can check Saint John's weather in August.
In comparing the weather of May and September, we see that both months experience warm temperatures, with May having a slightly cooler average of 26°C (79°F) compared to September's warmer average of 28°C (82°F). While May has minimal precipitation at 49 mm (1.9 in), September sees a significant increase in rainfall, totaling 144 mm (5.7 in) over more frequent rainy days—21 compared to May's 15 days. Additionally, humidity levels remain high in both months, with May at 79% and September slightly higher at 80%. For more detailed information, you can check Saint John's weather in September.
In comparing the weather between May and October, we see that both months feature similar temperatures, with October slightly warmer, having an average of 27°C (81°F) compared to May’s 26°C (79°F). However, October experiences significantly higher precipitation, totaling 109 mm (4.3 in) over 18 days, while May sees only 49 mm (1.9 in) across 15 days. Humidity remains constant at 79% in both months, suggesting a consistently humid environment. For more detailed insights, you can check Saint John's weather in October.
In May, 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 temperature of 26°C (79°F). The month experiences about 49 mm (1.9 in) of precipitation over approximately 15 days, accompanied by a humidity level of 79%. In contrast, November also sees a minimum of 24°C (76°F) and a maximum of 28°C (83°F), but with a slightly higher average temperature of 27°C (80°F). This month brings more rainfall, averaging 94 mm (3.7 in) over about 17 days, with humidity rising to 80%. For a detailed look at November's weather patterns, you can refer to Saint John's weather in November.
In both May and December, temperatures in Saint John's remain largely consistent, with minimums at 24°C (75°F), averages at 26°C (79°F), and maximums reaching 28°C (82°F). However, December experiences slightly higher precipitation, totaling 52 mm (2.1 in) over 18 days compared to May's 49 mm (1.9 in) across 15 days. Humidity levels are similar in both months, with May at 79% and December slightly lower at 78%. For a detailed look at December's weather specifics, you can visit Saint John's weather in December.
As May unfolds in Saint John, the climate offers a delightful blend of warmth and occasional rain, marking a transition into the summer months. With average temperatures hovering around a cozy 26°C (79°F), it's a perfect time to experience the vibrant local culture and stunning landscapes. Unlike the drier months that precede it, May brings increased humidity and frequent short bursts of rainfall, totaling about 49 mm over about half the month. This combination not only rejuvenates the lush greenery of the region but also adds a refreshing touch to the warm days. For a deeper dive into what makes this tropical paradise tick throughout the year, check out Saint John's Climate.