Last updated: August 21, 2025
In Saint John's, Antigua and Barbuda, the weather in July offers a warm and humid experience, with average temperatures hovering around 27°C (81°F). Visitors can expect maximum daytime highs of 29°C (84°F), ideal for beach activities, while nights bring a comfortable minimum of 25°C (78°F). This month sees a significant amount of rainfall, with an average precipitation of 81 mm (3.2 in) spread across approximately 19 days, highlighting the tropical nature of the region. With humidity levels at a notable 84%, July in Saint John's is beautifully warm, perfect for those seeking a vibrant Caribbean escape.
In July, Saint John's, Antigua and Barbuda, experiences a delightful summer warmth, with temperatures reflecting a gradual rise as the month progresses. The minimum temperature reaches a comfy 25°C (78°F), while the average temperature climbs to a pleasant 27°C (81°F), peaking at a balmy 29°C (84°F) during the daytime. This trend of increasing warmth is consistent with the seasonal transition towards the hotter months, as the island approaches its peak summer season. With the steady highs and mild nights, July offers a perfect blend of sunshine and tropical charm, inviting visitors to bask in the vibrant Caribbean atmosphere.
In July, Saint John's, Antigua and Barbuda experiences a notable spike in precipitation, with a remarkable 81 mm (3.2 in) of rainfall recorded over 19 days. This increase marks a significant rise from the previous months, especially when compared to June's 52 mm, demonstrating the onset of the wetter season. As summer progresses, July often sets the stage for the even rainier months ahead, particularly August and September, which see averages of 97 mm and 144 mm respectively. This trend highlights a clear shift towards heightened humidity and rainfall, characteristic of the tropical climate, providing vital moisture but also presenting challenges such as potential flooding.
In July, Saint John's, Antigua and Barbuda experiences a notable peak in humidity, reaching 84%, a trend that aligns with the rising humidity observed from early spring through mid-summer. This summer month contributes to the overall pattern of increasing moisture in the air, which begins with 76% in March and gradually escalates, culminating in the highest levels before slightly tapering off in August to 83%. The continuous rise from 81% in June sets a steamy stage for July, emphasizing the tropical climate's impact on daily life and activities during this vibrant season.
In July, Saint John's, Antigua and Barbuda, experiences one of its highest UV Index levels at a striking 14, classifying it in the extreme exposure category. This trend of high UV intensity peaks during the summer months, with the UV Index consistently remaining at 13 or above from March through July, indicating that sun safety is more crucial than ever. During this time, the burn time is notably short, at just 10 minutes, emphasizing the need for protective measures against harmful solar rays. As you enjoy the beautiful summer days, remember to stay informed about the UV levels. For more detailed insights, check out the Saint John's UV Index.
UV Risk Categories
In July, Saint John's, Antigua and Barbuda, basks in an impressive 361 hours of sunshine, marking it as one of the brightest months of the year. Following a delightful trend from previous months, July continues the upward trajectory established in the late spring, showcasing a noticeable increase compared to June's 339 hours. This consistent pattern of abundant sunlight throughout the summer not only enhances the island's charm but also invites visitors to indulge in its stunning beaches and vibrant culture. As temperatures rise, the sunshine beckons outdoor adventures, promising a lively and unforgettable experience in this tropical paradise.
In July, the likelihood of sunny weather in Saint John's, Antigua and Barbuda stands at 50%, offering a pleasant midpoint in the year. As summer unfolds, the chance of bright skies is notably stable compared to the lower probabilities observed in June at 26%. This moderate sunshine expectation reflects a slight increase, reminding visitors that while July can bring warmth, it also dances around the fleeting showers typical of the Caribbean. Observing trends throughout the year, February boasts the highest sun-chance at 71%, while months like April and June dip significantly. Nonetheless, July maintains a balance, providing an inviting atmosphere for vacationers eager to soak in the sun amidst idyllic island vibes.
In Saint John's, Antigua and Barbuda, July offers a delightful 13 hours of daylight, maintaining the trend established in June. This peak of daylight signals the arrival of the summer, when the days are longest, providing ample time for outdoor adventures and beach outings. Following July, daylight gradually tapers off in August, settling back to 12 hours. In contrast, the year starts with a consistent 11 hours of daylight in both January and February, which increases modestly as spring arrives. By late spring and early summer, the increase to 13 hours underlines the region's idyllic climate, making it an attractive time for visitors seeking sun-soaked days. The regular rhythm of daylight throughout the year reveals a beautiful balance between sun-filled activity and restful nights.
In July, Saint John's, Antigua and Barbuda experiences an invigorating rise in average wind speed, reaching 8.3 m/s (19 mph). This subtle uptick marks a continuation of the breezy summer conditions from June, where winds were already brisk at 8.1 m/s (18 mph). As the summer progresses, the winds remain relatively strong, offering refreshing relief from the tropical heat while encouraging outdoor activities and watersports. As the months transition into August, a slight decline to 7.0 m/s (16 mph) is observed, heralding the onset of the quieter late summer periods. Overall, July stands out as a pivotal month where winds are at their most lively, inviting both locals and visitors to bask in the coastal allure of this beautiful Caribbean destination.
Weather in Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between July and January, July is typically warmer and more humid. The average temperature in July ranges from a minimum of 25°C (78°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F) and a notably high humidity of 84%. In contrast, January exhibits slightly cooler temperatures, with a minimum of 23°C (73°F) and a maximum of 27°C (80°F), averaging 25°C (78°F). Additionally, January experiences less precipitation, totaling 34 mm (1.4 in) over 12 days, compared to July's 81 mm (3.2 in) over 19 days. For more detailed information, you can visit Saint John's weather in January.
In July, the weather in Saint John's is noticeably warmer, with temperatures ranging from a minimum of 25°C (78°F) to a maximum of 29°C (84°F) and an average of 27°C (81°F). The month experiences higher humidity levels at 84% and receives a significant amount of rainfall, totaling 81 mm (3.2 in) over 19 days. In contrast, February offers slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 26°C (80°F), alongside a lower average of 25°C (77°F). Precipitation is also reduced in February, with 36 mm (1.4 in) spread over 14 days and humidity at a more comfortable 76%. For more detailed information, you can check Saint John's weather in February.
When comparing the weather in July and March, July is generally warmer and more humid. The average temperature in July hovers around 27°C (81°F), with a minimum of 25°C (78°F) and a maximum of 29°C (84°F), whereas March offers slightly cooler conditions, with average temperatures reaching 25°C (77°F) and a maximum of 26°C (80°F). Additionally, July experiences significantly more rainfall, with 81 mm (3.2 in) spread over 19 days, compared to March's 31 mm (1.2 in) over just 11 days. The humidity in July is also higher at 84%, compared to March's 76%. For a more detailed look at the weather in March, visit Saint John's weather in March.
When comparing the weather in July and April, it's evident that July is warmer and more humid. In July, temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (84°F), with an average of 27°C (81°F), while April's temperatures are slightly cooler, with a minimum of 23°C (74°F) and a maximum of 27°C (82°F), averaging 25°C (78°F). Additionally, July experiences significantly more precipitation, with 81 mm (3.2 in) over 19 days compared to April's 38 mm (1.5 in) across 14 days. The humidity in July is also higher at 84%, compared to April's 78%. For more details, you can check Saint John's weather in April.
When comparing the weather in July and May, one can observe that July tends to be slightly warmer, with average temperatures reaching 27°C (81°F) compared to May's average of 26°C (79°F). While both months experience similar minimums, July's maximum temperature stands at 29°C (84°F), just a degree higher than May's 28°C (82°F). Notably, July also sees significantly more rainfall, with 81 mm (3.2 in) over 19 days, whereas May records only 49 mm (1.9 in) over 15 days. Humidity levels are higher in July at 84%, compared to 79% in May, contributing to a more humid atmosphere. For a closer look at May’s weather specifics, you can check out Saint John's weather in May.
In comparing the weather patterns of June and July, it's evident that both months experience warm temperatures, though July tends to be slightly warmer. July boasts a minimum temperature of 25°C (78°F) and an average of 27°C (81°F), while June's temperatures range from a minimum of 24°C (76°F) to an average of 27°C (80°F). July also sees increased precipitation, with 81 mm (3.2 in) over 19 days, compared to June's 52 mm (2.0 in) over 14 days. Additionally, humidity levels are higher in July at 84%, compared to June's 81%. For a more detailed look at June weather, you can refer to this link: Saint John's weather in June.
In comparing the weather between July and August, both months feature similar temperature ranges, with minimums of 25°C (78°F), averages around 27°C (81°F in July and 82°F in August), and maximums reaching 29°C (84°F). However, August experiences slightly higher precipitation, accumulating 97 mm (3.8 in) over 18 days, compared to July's 81 mm (3.2 in) across 19 days. Additionally, humidity remains high in both months, with July at 84% and August slightly lower at 83%. For more details on the weather in August, check out Saint John's weather in August.
July and September share similar temperature ranges, with July averaging around 27°C (81°F) and September slightly warmer at 28°C (82°F). However, September experiences significantly more rainfall, totaling 144 mm (5.7 in) over 21 days compared to July's 81 mm (3.2 in) across 19 days. Additionally, while both months have high humidity, September's level is slightly lower at 80% compared to July's 84%. For more detailed information, you can explore Saint John's weather in September.
In comparing the weather between July and October, both months feature similar temperature ranges, with minimums at around 25°C (78°F), averages of 27°C (81°F), and maximums reaching 29°C (84-85°F). However, October experiences slightly higher precipitation, totaling 109 mm (4.3 in) across 18 days, compared to July's 81 mm (3.2 in) over 19 days. Additionally, October's humidity is marginally lower at 79%, compared to July's higher level of 84%. For more detailed insights, you can check Saint John's weather in October.
In July, temperatures are consistently warm, with lows around 25°C (78°F) and highs reaching up to 29°C (84°F), making the average temperature hover at around 27°C (81°F). The month experiences about 81 mm (3.2 in) of rainfall over approximately 19 days, contributing to a high humidity level of 84%. In contrast, November shows a slight dip in temperature, with a minimum of 24°C (76°F) and a maximum of 28°C (83°F), maintaining an average of 27°C (80°F). Rainfall increases to 94 mm (3.7 in), occurring over 17 days, while humidity decreases slightly to 80%. For a more detailed look at November's weather, you can check out Saint John's weather in November.
In July, the weather is characterized by slightly higher temperatures, with minimums around 25°C (78°F) and afternoon highs reaching up to 29°C (84°F), accompanied by a high humidity of 84%. This month also experiences more rainfall, totaling 81 mm (3.2 in) over 19 days. In contrast, December offers a marginally cooler climate, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F) and lower precipitation levels at 52 mm (2.1 in) across 18 days, alongside a reduced humidity of 78%. For more details, you can check Saint John's weather in December. Overall, while both months enjoy warm temperatures, July is notably wetter and more humid compared to December.
As July unfolds in Saint John, the warmth intensifies, giving residents and visitors alike the chance to bask in the sun with average temperatures hovering pleasantly around 27°C. This month stands out with noticeably higher humidity levels and frequent precipitation, making it one of the wetter periods of the year. Unlike the drier months, July's combination of rain and warmth creates a lush tropical environment, inviting outdoor activities while reminding us to stay prepared for the occasional shower. For those eager to learn more about the unique characteristics of this month in Saint John's weather, explore Saint John's Climate.