Last updated: August 31, 2025
July in Castries, Saint Lucia brings a warm tropical experience, with maximum temperatures soaring to 31°C (89°F) and an average of 27°C (81°F), ideal for beachgoers and explorers alike. However, visitors should be prepared for a humid atmosphere, as humidity levels hover around a notable 84%. Rainfall is characteristic of this month, with 105 mm (4.1 in) of precipitation distributed over an average of 24 days, ensuring the lush landscapes remain vibrant. Whether basking in the sun or enjoying refreshing rainfall, July presents a unique blend of warmth and tropical intrigue.
In July, Castries, Saint Lucia, baskes in warm tropical weather, with temperatures averaging around 27°C (81°F). The month starts with a minimum of 24°C (76°F), gradually rising to a peak of 31°C (89°F), mirroring the consistent warmth that the region is known for. This trend of gradually increasing temperatures continues from the earlier months, signaling the height of summer and inviting beachgoers to enjoy the sun-soaked shores. With the mercury hovering around these delightful averages, July provides an ideal atmosphere for visitors seeking both relaxation and adventure in this Caribbean paradise, making it a favored time for travelers and locals alike.
July marks a significant shift in precipitation patterns for Castries, Saint Lucia, with rainfall skyrocketing to 105 mm (4.1 in) over 24 days. This represents the wettest month of the year, nearly doubling June's total, which already had a robust 65 mm (2.6 in). As the island moves deeper into the rainy season, July sets the stage for the even wetter months ahead. Notably, August and September continue this trend, with average rainfall reaching 113 mm (4.5 in) and 121 mm (4.8 in), respectively. The increase in precipitation days not only highlights the intensity of the season but also underscores the tropical climate's characteristic variability, painting a vivid picture of lush landscapes nourished by the ample summer rains.
In July, Castries, Saint Lucia experiences a noticeable increase in humidity, reaching 84%. This peak is emblematic of the humid climate prevalent throughout the year, with levels gradually rising from a low of 79% in April. Following June’s humidity at 83%, July marks the height of the rainy season, contributing to a slightly warmer and stickier atmosphere. As the months progress, humidity begins to stabilize, dipping to 81% in August before resuming the consistent levels witnessed earlier in the year. This trend reflects the tropical environment of the region, where lush landscapes thrive amidst the warm, humid conditions.
In July, Castries, Saint Lucia, experiences a UV Index of 13, categorizing the exposure as extreme with a burn time of just 10 minutes. This trend of heightened UV levels is consistent from February to June, where the UV Index remains firmly in the extreme range, peaking at 14 from March to May. As summer continues, this intense UV exposure persists into August and September, drawing attention to the need for effective sun protection. With January and November showing slightly lower levels of very high UV Indexes, it's clear that July sits firmly within a season where vigilance against skin damage is crucial. For more details on the UV Index throughout the year, check out Castries UV Index.
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In July, Castries, Saint Lucia enjoys a delightful 348 hours of sunshine, continuing the trend of glorious weather established in the previous months. Following May's peak of 355 hours, the sunshine hours gradually taper off in June but still remain robust. This vibrant summer month outshines many others, retaining a healthy dose of sunlight that beckons beach lovers and outdoor enthusiasts alike. As summer transitions toward August with a slightly lower total of 346 hours, July stands out as a golden opportunity for sun-soaked adventures, reminding visitors of the island's enchanting allure where warmth and vitality abound.
In Castries, Saint Lucia, the likelihood of sunny weather in July stands at a moderate 46%, placing it on par with August. This figure is a slight improvement compared to the preceding months, notably June, when the chance of sunshine dips to 29%. Observing the broader trend, it’s evident that while the summer months experience fluctuations, they generally maintain a reasonable likelihood of sun, particularly when compared to the earlier part of the year. As the region transitions from the wet season, July offers a promising balance of warmth and sunshine, making it an appealing time for visitors hoping to enjoy the idyllic island.
In Castries, Saint Lucia, July basks in a delightful 12 hours of daylight, continuing a trend that begins in March and lasts through September. This period of extended sunlight reflects the region's tropical climate, where longer days coincide with the vibrant energy of summer. Notably, the daylight duration maintains its consistency at 12 hours from June through August, providing ample time for exploration of the stunning island landscapes and local attractions. As the year progresses towards October, daylight begins to taper off, gradually returning to shorter days, but for now, July’s generous hours of sunshine invite visitors and locals alike to revel in the beauty and warmth of the Caribbean.
In July, the winds in Castries, Saint Lucia, maintain a steady average speed of 6.3 m/s (14 mph), mirroring the gentle breezes typical of earlier months like January and March. After a slight uptick in wind speed during February and May, the flow begins to decrease, with August bringing a notable drop to 5.1 m/s (11 mph). Overall, July's wind conditions provide a pleasant balance, remaining consistent with the early summer months while hinting at the impending lull of late summer. This trend reflects a rhythm of tropical breezes, perfect for an island getaway, where the persistent winds offer both comfort and a hint of adventure.
Weather in Castries varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Castries, focusing on differences in temperature, rainfall, humidity, and UV levels.
In July, temperatures are generally warmer with a minimum of 24°C (76°F) and an average of 27°C (81°F), reaching up to a maximum of 31°C (89°F). This month also experiences significantly more rainfall, with 105 mm (4.1 in) over 24 days, contributing to a high humidity level of 84%. In contrast, January offers slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 26°C (78°F), peaking at 30°C (86°F). Precipitation is notably less in January, totaling 36 mm (1.4 in) across 15 days, and with humidity at 81%, it still feels reasonably comfortable. For more detailed insights on weather conditions, check Castries weather in January.
In comparing the weather between July and February, July is marked by higher temperatures, with a minimum of 24°C and an average of 27°C, reaching up to 31°C. In contrast, February experiences slightly cooler temperatures, ranging from a minimum of 21°C to a maximum of 30°C, with an average of 25°C. Additionally, July sees significantly more precipitation, totaling 105 mm over 24 days, whereas February has only 33 mm over 12 days. The humidity levels are also slightly higher in July at 84%, compared to February's 80%. For more information, you can explore Castries weather in February.
In comparing the weather between July and March, we can observe some notable differences. July experiences slightly higher temperatures, with minimums averaging 24°C (76°F) and maximums reaching up to 31°C (89°F), compared to March’s temperatures of 22°C (72°F) to 30°C (85°F). Additionally, July is marked by a greater amount of precipitation, totaling 105 mm (4.1 in) over 24 days, whereas March sees only 38 mm (1.5 in) across 15 days. Humidity levels are fairly consistent, with July at 84% and March at 80%. For a detailed look at March weather patterns, you can visit Castries weather in March.
In comparing the weather of July and April, we can observe some notable differences. July tends to be slightly warmer, with average temperatures reaching 27°C (81°F) and maximums peaking at 31°C (89°F), while April's averages are 26°C (80°F) with similar max temperatures. However, July's humidity is notably higher at 84% compared to April's 79%, creating a more oppressive feel. Additionally, July experiences significantly more precipitation, totaling 105 mm (4.1 in) over 24 days, while April has a much lighter rainfall of 35 mm (1.4 in) across 14 days. For more detailed insights into April’s climate, you can check out Castries weather in April.
When comparing the weather in July and May, both months exhibit similar average temperatures, with an average of 27°C (81°F) and maximum temperatures of 31°C (89°F) in July and 31°C (88°F) in May. However, July experiences significantly more rainfall, totaling 105 mm (4.1 in) over 24 days, compared to May's 39 mm (1.6 in) over just 13 days. Additionally, humidity is slightly higher in July at 84%, versus 80% in May. For more detailed information about May weather, check out Castries weather in May.
When comparing the weather in June and July, both months exhibit similar temperature patterns, with minimums around 24°C (75-76°F), average temperatures of 27°C (81°F), and maximums reaching 31°C (88-89°F). However, July experiences significantly higher precipitation, totaling 105 mm (4.1 in) over 24 days, compared to June's 65 mm (2.6 in) over 16 days. Additionally, humidity levels remain relatively high in both months, with July at 84% and June at 83%. These differences indicate that while both months are warm and humid, July tends to be wetter than June. For more detailed information, you can visit Castries weather in June.
In comparing the weather between July and August, both months exhibit warm temperatures, with July having a minimum of 24°C (76°F) and an average of 27°C (81°F), while August sees a slightly higher average temperature of 28°C (82°F). Both months experience a maximum temperature of 31°C (89°F), suggesting consistent summer heat. However, August tends to have a little more rainfall, recording 113 mm (4.5 in) over 25 days compared to July’s 105 mm (4.1 in) over 24 days. Humidity remains high in both months, but is slightly lower in August at 81% compared to July's 84%. For more details, check out Castries weather in August.
In comparing the weather between July and September, we see a slight increase in temperature, with September averaging 28°C (83°F) compared to July's 27°C (81°F). Both months experience similar minimum temperatures, but September’s maximum can reach up to 32°C (90°F), slightly warmer than July's 31°C (89°F). While July has a higher humidity level at 84%, September's humidity is still high at 80%. Precipitation also shows a minor increase, with September receiving 121 mm (4.8 in) over 19 days, compared to July's 105 mm (4.1 in) over 24 days. For more details, you can check Castries weather in September.
In comparing the weather between July and October, we see that both months share similar minimum and average temperatures, with July having a maximum temperature of 31°C (89°F) compared to October's slightly warmer maximum of 32°C (89°F). Precipitation levels are slightly higher in October, with 128 mm (5.1 in) over 21 days, compared to July's 105 mm (4.1 in) over 24 days. Interestingly, humidity levels are quite close as well, with July at 84% and October at 82%. For more detailed information, you can check out Castries weather in October.
In comparing the weather between July and November, we observe that both months maintain similar temperature ranges, with a minimum of 24°C (76°F), an average of 27°C (81°F), and a maximum of around 31°C (87°F to 89°F). However, July experiences slightly higher precipitation at 105 mm (4.1 inches) over 24 days, compared to November's 103 mm (4.1 inches) across 21 days. Humidity levels are also quite comparable, at 84% in July and 83% in November, suggesting that both months can feel muggy. For more detailed information about the weather in November, you can visit Castries weather in November.
July and December present distinct weather patterns, showcasing the tropical climate's variations. In July, temperatures range from a minimum of 24°C (76°F) to a maximum of 31°C (89°F), with an average of 27°C (81°F). The month sees considerable precipitation, totaling 105 mm (4.1 in) over 24 days, alongside high humidity levels at 84%. In contrast, December features slightly milder temperatures, with a minimum of 22°C (72°F) and a maximum of 30°C (86°F), yielding an average of 26°C (80°F). Precipitation is less intense, totaling 46 mm (1.8 in) across 16 days, and humidity remains relatively high at 82%. For more detailed information on December weather, you can visit Castries weather in December.
In July, Castries experiences a melting pot of warmth and moisture, setting it apart from other months. While temperatures hover in the comfortable range, the high humidity amplifies the feeling of warmth, making it essential to stay hydrated. This month witnesses considerable rainfall, with frequent showers that contribute to lush surroundings, a striking contrast to the drier spells earlier in the year. July's combination of heat and humidity creates a vibrant atmosphere, ideal for experiencing the island's natural beauty. For those interested in a deeper dive into Castries's weather patterns, visit Castries Climate.