Last updated: August 31, 2025
In April, Castries, Saint Lucia experiences a delightful tropical climate characterized by maximum temperatures reaching up to 31°C (87°F) and a comfortable average of 26°C (80°F). With minimum temperatures rarely dipping below 23°C (73°F), the conditions are perfect for outdoor activities. While the month sees about 35 mm (1.4 in) of rainfall spread over 14 days, this typically manifests as brief, refreshing showers, contributing to the island’s lush greenery. Coupled with a humidity level of approximately 79%, April in Castries offers an inviting atmosphere for visitors looking to bask in the warmth of the Caribbean.
April in Castries, Saint Lucia marks a delightful transition into warmer temperatures, with minimums reaching 23°C (73°F) and daily averages climbing to 26°C (80°F). As spring unfolds, the maximum temperature can hit a balmy 31°C (87°F), often inviting sun-seekers to enjoy the stunning beaches and vibrant local culture. Notably, April also brings a slight increase in warmth compared to earlier months, echoing the trend of rising temperatures as the year progresses. This charming climate makes April an ideal time for travelers to explore the lush landscapes and indulge in the island's myriad outdoor activities.
In April, Castries, Saint Lucia experiences a balanced interplay of precipitation, with a total of 35 mm (1.4 in) of rain spread over 14 days. This amount is indicative of a steady transition into the wetter months that lie ahead, as March recorded a slightly higher total of 38 mm (1.5 in). The rainfall pattern suggests a shift towards increased moisture, paving the way for May's anticipated uptick to 39 mm (1.6 in). Interestingly, while the precipitation levels remain consistent, the frequency of rainy days this month, only two fewer than the previous month, hints at the region's characteristic tropical climate, where brief showers are common during this time of year. As April closes, the lush landscape is rejuvenated, hinting at the verdant beauty that will flourish as the rainy season approaches in the subsequent months.
In April, Castries, Saint Lucia experiences a slight dip in humidity, with levels settling at 79%. This month marks a transition as the dry season gradually yields to the balmy embrace of the wet season. Following a consistent 80% humidity in both February and March, April's lower humidity offers a brief respite before the levels rise again; May returns to 80% and the humid months of June and July see figures climb to 83% and 84%, respectively. Overall, while April's climate is more comfortable compared to the months that follow, the trend leans toward increased humidity as the year progresses, making it a delightful yet humid destination for travelers.
In April, Castries, Saint Lucia, continues to experience an extreme UV Index of 14, with a burn time of just 10 minutes. This marks a consistent trend for this time of year, mirroring March and May, where the UV index remains alarmingly high. As the months transition from the cooler beginnings of the year to the peak of summer, locals and visitors alike should stay vigilant against the sun’s harmful rays, as February and March also exhibited extreme ratings. With the UV Index consistently hovering at extreme levels, it's essential to take protective measures to ensure safe outdoor activities. To learn more about UV exposures, you can refer to the comprehensive guide at Castries UV Index.
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April in Castries, Saint Lucia, is a delightful transition between the bustling early months of the year and the warmer tones of late spring. With 336 hours of radiant sunshine, it stands as a testament to the area's splendid weather, just shy of March's peak. This ongoing trend showcases a remarkable consistency in delightful daylight, beginning with 268 hours in January and gradually climbing to 355 hours by May. The sun begins to wrap the island in warmth, aligning perfectly with the region's vibrant festivities. Even as the days become slightly shorter in June, with 325 hours recorded, the overall trend reveals a robust sun-filled promise that keeps visitors captivated throughout the spring.
As April rolls into Castries, Saint Lucia, the likelihood of sunny weather dips to 36%, marking a noticeable decrease from February's 66%. This trend suggests the onset of a shift as the dry season gives way to slightly more unpredictable conditions. Following a peak in sunshine during the early months of the year, April's sun chances drop, although the weather remains typically mild and pleasant. As the year progresses into May, the probability inches up to 45%, hinting that while April may usher in some cloudier days, the overall warmth and charm of the Caribbean continue to entice visitors.
In April, Castries, Saint Lucia enjoys a delightful 12 hours of daylight, following the gradual increase from 11 hours in the previous months of January and February. This trend reflects the island's transition into the warmer spring season, where daylight hours remain consistent until October. The sunlit days of April set the perfect backdrop for outdoor exploration and relaxation, offering plenty of time to soak in the vibrant natural beauty and cultural experiences that this Caribbean gem has to offer. As the year progresses, daylight remains stable, creating a lovely balance that fosters both adventure and tranquility.
In April, the winds in Castries, Saint Lucia, tend to be gentle, with an average speed of 5.4 m/s (12 mph), marking a slight dip from the breezier months of January and March, both at 6.3 m/s (14 mph). This trend of softer breezes continues into May and June, where the winds re-establish themselves at 6.4 m/s (14 mph), providing a refreshing atmosphere. As we transition into the warmer months, a notable decrease occurs in August, with winds dropping to 5.1 m/s (11 mph), and continuing into a calm September with 3.9 m/s (9 mph), before gradually recovering in the latter months of the year. Overall, April's gentle winds create a tranquil backdrop, setting the stage for the vibrant beauty of Saint Lucia's landscapes.
Weather in Castries varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Castries, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between April and January, both months exhibit similar temperature patterns, with January experiencing slightly cooler conditions. April's temperatures range from a minimum of 23°C (73°F) to a maximum of 31°C (87°F), while January's temperatures vary from 22°C (72°F) to 30°C (86°F). Precipitation levels are nearly identical, with April receiving 35 mm (1.4 in) over 14 days and January slightly higher at 36 mm (1.4 in) across 15 days. Humidity is also comparable, with April at 79% and January a touch higher at 81%. For additional insights, you can explore Castries weather in January.
When comparing the weather in April and February, both months exhibit warm temperatures and high humidity, though April tends to be slightly warmer. April has an average temperature of 26°C (80°F), with a maximum reaching 31°C (87°F), while February's average is slightly lower at 25°C (78°F) and peaks at 30°C (86°F). Precipitation levels are comparable, with April receiving 35 mm over 14 days and February slightly less at 33 mm over 12 days. Both months have a humidity level around 79% to 80%, making them similarly muggy. For more details on February weather specifically, visit Castries weather in February.
April's weather features slightly warmer temperatures compared to March, with a minimum of 23°C (73°F) and a maximum of 31°C (87°F), while March sees a minimum of 22°C (72°F) and a maximum of 30°C (85°F). Both months share the same average temperature of 26°C (79°F). However, April experiences a bit less precipitation, totaling 35 mm (1.4 in) over 14 days, compared to March's 38 mm (1.5 in) across 15 days. Humidity levels remain high in both months, with April at 79% and March at 80%. For more detailed insights on the weather, check out Castries weather in March.
April and May have similar temperature ranges, with both months experiencing minimum temperatures around 23°C (73°F) and maximum temperatures peaking at 31°C (87°F). However, May sees a slightly warmer average temperature of 27°C (81°F) compared to April's 26°C (80°F). Precipitation is slightly higher in May at 39 mm (1.6 in) over 13 days, whereas April has 35 mm (1.4 in) over 14 days. Humidity remains comparably high in both months, with April at 79% and May at 80%. For more information, check out Castries weather in May.
April and June exhibit similar temperature ranges, with June having slightly warmer averages and minimums. In April, temperatures range from a low of 23°C (73°F) to a high of 31°C (87°F), while June sees a minimum of 24°C (75°F) and a maximum still reaching 31°C (88°F). However, June is notably wetter, with 65 mm (2.6 in) of precipitation compared to April's 35 mm (1.4 in), and slightly more days of rain, totaling 16 days in June against 14 in April. Humidity also increases in June, rising to 83% from April's 79%. For more detailed information, you can visit Castries weather in June.
April and July in Castries exhibit warm temperatures, with both months featuring maximums around 31°C (87°F). However, April tends to be slightly cooler, with averages of 26°C (80°F) compared to July's average of 27°C (81°F). Precipitation is notably higher in July, with 105 mm (4.1 inches) of rain falling over 24 days, compared to April's 35 mm (1.4 inches) over 14 days. Additionally, humidity levels are higher in July at 84%, versus 79% in April, contributing to a more muggy atmosphere. For a more detailed overview of July's weather, you can check out Castries weather in July.
April and August present subtly different weather profiles. In April, temperatures range from a minimum of 23°C (73°F) to a maximum of 31°C (87°F), with an average of 26°C (80°F) and relatively low precipitation at 35 mm (1.4 in) over 14 days. Humidity stands at 79%. In contrast, August sees slightly warmer conditions with a minimum of 24°C (76°F) and a higher average of 28°C (82°F), reaching the same maximum of 31°C (89°F). However, it also experiences significantly greater rainfall, totaling 113 mm (4.5 in) over 25 days, and slightly higher humidity at 81%. For more detailed information on August weather, you can check Castries weather in August.
April and September share a warm climate, though September tends to be slightly hotter and wetter. In April, temperatures range from a minimum of 23°C (73°F) to a maximum of 31°C (87°F), with average humidity at 79% and precipitation of 35 mm (1.4 in) over 14 days. In contrast, September sees a minimum temperature of 25°C (76°F) and a maximum of 32°C (90°F), accompanied by higher rainfall of 121 mm (4.8 in) spread over 19 days, while humidity remains relatively stable at 80%. For a detailed view of September weather, check out Castries weather in September.
April and October both exhibit warm tropical temperatures, but there are notable differences in their weather patterns. In April, temperatures range from a minimum of 23°C (73°F) to a maximum of 31°C (87°F) with an average of 26°C (80°F). The month sees relatively low precipitation at 35 mm (1.4 in) over about 14 days, maintaining a humidity level of 79%. In contrast, October experiences slightly warmer temperatures, ranging from a minimum of 24°C (76°F) to a maximum of 32°C (89°F) with an average of 27°C (81°F). However, October is much wetter, with precipitation of 128 mm (5.1 in) over approximately 21 days, and a humidity of 82%. For more detailed information on the weather during this month, check out Castries weather in October.
In comparing April and November weather, we find that both months enjoy warm temperatures, with April's average reaching 26°C (80°F) and November slightly warmer at 27°C (81°F). Both months feature similar maximum temperatures of 31°C (87°F), yet April experiences lower humidity at 79% compared to November’s 83%. However, November sees a significant increase in rainfall, with 103 mm (4.1 in) spread over 21 days, a stark contrast to April's 35 mm (1.4 in) over 14 days. For more detailed insights, you can check Castries weather in November.
In comparing the weather of April and December, we see that both months maintain a similar average temperature of around 26°C (80°F), with April having slightly higher maximum temperatures of 31°C (87°F) compared to December's 30°C (86°F). While April typically experiences a lower total precipitation of 35 mm (1.4 in) over 14 days, December tends to be wetter, with 46 mm (1.8 in) falling over 16 days. Additionally, humidity levels are slightly higher in December at 82% compared to April's 79%. For more detailed information on December weather, visit Castries weather in December.
As April unfolds in Castries, the weather begins to shift, embracing the warmth of the pre-summer season. With average temperatures hovering around a comfortable 26°C (80°F), the days are bright and inviting, though humidity levels tend to linger around 79%, adding a noticeable stickiness to the air. Compared to other months, April experiences a moderate amount of rainfall, with about 35 mm distributed over 14 days, allowing for the lush landscapes to thrive while still offering plenty of sunshine. This blend of warmth and occasional showers makes April a unique transitional month in Castries, perfect for enjoying the vibrant natural beauty of the island. For a deeper dive into the seasonal variations, check out Castries Climate.