Last updated: August 31, 2025
In Charlestown, Saint Kitts and Nevis, the month of May brings a delightful tropical climate, characterized by a pleasant average temperature of 26°C (79°F). Daily highs reach a maximum of 28°C (82°F), while nights cool off to a minimum of 24°C (75°F), making it an ideal time for outdoor activities. With 79% humidity, the air may feel wonderfully warm, yet refreshing due to the gentle breezes. However, visitors should be prepared for occasional showers, as the island experiences about 50 mm (2.0 in) of rainfall over 14 days. Overall, May offers a vibrant and lush environment perfect for soaking in the natural beauty of this Caribbean gem.
In May, Charlestown, Saint Kitts and Nevis, starts to warm up, showcasing a delightful range of temperatures that embody the gradual transition into summer. With minimum temperatures hovering around 24°C (75°F) and peaking at an inviting 28°C (82°F), the average temperature climbs to a comfortable 26°C (79°F). This month marks a subtle increase from April, reflecting a consistent trend of gradually rising warmth as the year progresses. As the days grow longer and sun-kissed moments abound, May serves as a perfect prelude to the hotter summer months ahead, inviting both locals and travelers to bask in the tropical climate.
In Charlestown, Saint Kitts and Nevis, the month of May marks a notable shift in precipitation patterns, as the island receives 50 mm (2.0 in) of rain over 14 days. This increase from April's 38 mm (1.5 in) highlights the onset of the wetter season, paving the way for the surrounding lush landscapes. While the rainfall in May is relatively moderate compared to the heavy downpours of the later summer months, it serves as a precursor to June's almost equal levels of precipitation. As the island transitions into the heart of its rainy season, the frequency and intensity of rainfall will only escalate, with July and August showing significant jumps in both precipitation amounts and wet days, signifying the lush and vibrant environment that characterizes this tropical paradise.
As May arrives in Charlestown, Saint Kitts and Nevis, the humidity subtly rises to an average of 79%, marking the onset of a warmer, more tropical climate. This increase from 78% in April signifies a gradual climb that continues into the sweltering summer months, peaking at 83% in July. The trend showcases a steady escalation in humidity, hinting at the Caribbean's famous sultry atmosphere that envelops the island. As the year progresses, the humidity fluctuates slightly but maintains a generally high level, creating a lush, vibrant environment characteristic of the region. Visitors to Charlestown during this time can expect the air to feel more humid, an essential aspect of the island's unique charm and allure.
In May, Charlestown, Saint Kitts and Nevis experiences a consistently high UV Index of 13, placing it in the extreme exposure category with a rapid burn time of just 10 minutes. This level of UV intensity mirrors the preceding months of March and April, indicating a trend of heightened sun exposure as the region transitions from spring into early summer. As outdoor activities become more appealing, residents and visitors alike should be vigilant in their sun protection, ensuring the use of sunscreen and protective clothing to combat the potentially harmful effects of the sun. For a detailed overview of UV trends throughout the year, visit Charlestown UV Index.
UV Risk Categories
As May unfolds in Charlestown, Saint Kitts and Nevis, residents and visitors alike revel in the abundant sunshine, basking in an impressive 359 hours of daylight. This month stands out not just for its warmth but also as part of a delightful trend: the sunlight increases steadily from January's 262 hours to a peak in July with 362 hours. April's similar brightness with 347 hours hints at the approaching summer, making the transition to May feel particularly vibrant. Following this sunny peak, the days gradually shorten as summer gives way to autumn, yet even in the cooler months, sunshine remains a cherished feature, ensuring that the island's charm glows brightly all year round.
In Charlestown, Saint Kitts and Nevis, the likelihood of sunny weather in May stands at a moderate 53%, presenting a glimpse of sunshine amid the transitioning seasons. This month follows the notably drier April—where the chance of sun drops to 45%—and precedes June, which sees the probability of sun plummet to 24%, indicating a sharp dip in clear skies. May’s sunshine likelihood represents a recovery from the cooler months, particularly when compared to earlier high points in February (71%) and November (68%). Overall, while the weather in May remains fairly sunny, it signals the impending arrival of the rainy season, so those planning to visit should embrace the sun while it lasts!
In Charlestown, Saint Kitts and Nevis, daylight duration gradually increases as the year progresses, showcasing a delightful shift from 11 hours in January and February to a peak of 13 hours in June and July. As spring unfolds, March and April see a transition to 12 hours of daylight, which continues into May, allowing residents and visitors to bask in the beauty of longer days. Following the summer months, daylight begins to wane, tapering back to 12 hours in August and September before settling into 11 hours again by November through January. This rhythmic pattern of daylight not only enriches the island’s vibrant lifestyle but also highlights the enchanting allure of its seasonal changes.
In May, Charlestown, Saint Kitts and Nevis experiences a pleasant average wind speed of 7.4 m/s (17 mph), maintaining a gentle breeze that adds to the island's tropical charm. This moderate wind is a slight uptick from April's 6.6 m/s (15 mph), hinting at the approach of summer when winds typically strengthen. As the year progresses into June with an increase to 8.2 m/s (18 mph), May serves as a delightful transition, inviting both tourists and locals to enjoy the balmy conditions before the winds pick up. Notably, the May winds are part of a broader trend where spring months often feature varied yet manageable gusts, making this time ideal for outdoor activities and sailing adventures.
Weather in Charlestown varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Charlestown, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, May exhibits slightly warmer temperatures, with averages of 26°C (79°F) compared to January's 25°C (78°F). The maximum temperature in May reaches up to 28°C (82°F), providing a bit more warmth than the 27°C (81°F) seen in January. When it comes to precipitation, May experiences more rainfall, averaging 50 mm (2.0 in) over 14 days, whereas January sees 35 mm (1.4 in) over 13 days. Humidity levels are also notably similar, with May at 79% and January at 77%. For more detailed insights, you can check Charlestown weather in January.
In comparing the weather between May and February, it's clear that both months offer warm temperatures, but May tends to be slightly warmer. 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). February, on the other hand, has a slightly lower temperature range, with a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 27°C (80°F). Precipitation is also greater in May, with 50 mm (2.0 in) over 14 days, compared to February's 35 mm (1.4 in) over 11 days. The humidity levels are quite similar, at 79% for May and 77% for February. For more details on February's climate, you can visit Charlestown weather in February.
When comparing the weather in May and March, it is clear that May tends to be slightly warmer, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F). In contrast, March has a narrower temperature range, with average temperatures from 22°C (73°F) to 26°C (80°F). Additionally, May experiences higher precipitation, with 50 mm (2.0 in) spread over 14 days, compared to March's 27 mm (1.0 in) over just 9 days. Humidity levels are also slightly higher in May at 79%, while March maintains a comfortable 77%. For more detailed information on March weather, you can visit Charlestown weather in March.
In comparison to April, May experiences slightly warmer temperatures with a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (82°F). April, on the other hand, has a minimum of 23°C (74°F), an average of 25°C (78°F), and a maximum of 27°C (82°F). Precipitation levels increase in May, reaching 50 mm (2.0 in) over 14 days, compared to April's 38 mm (1.5 in) over 13 days. Humidity also rises marginally in May, averaging at 79% compared to April's 78%. For a detailed look at the weather conditions in April, you can check Charlestown weather in April.
In comparing the weather of May and June, we see minimal differences in temperature and precipitation levels. May features a minimum temperature of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (82°F), accompanied by 50 mm (2.0 in) of rainfall over 14 days and a humidity level of 79%. June, on the other hand, sees a slight uptick in average temperature to 27°C (81°F) while maintaining similar minimum and maximum temperatures. Precipitation decreases slightly to 49 mm (1.9 in) over 12 days, with humidity rising to 81%. This subtle shift highlights the rising warmth and humidity as spring transitions into summer. For more detailed insights, visit Charlestown 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 experiences about 50 mm (2.0 in) of precipitation over 14 days, accompanied by a humidity level of 79%. In contrast, July sees slightly warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 29°C (84°F), averaging 27°C (81°F). However, July is also wetter, receiving 76 mm (3.0 in) of rain across 19 days, and has a higher humidity of 83%. For more detailed information, you can check Charlestown weather in July.
In comparison to May, August tends to be slightly warmer, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), compared to May's range of 24°C (75°F) to 28°C (82°F). Additionally, August experiences more precipitation, with a total of 94 mm (3.7 in) over 16 days, compared to May's 50 mm (2.0 in) over 14 days. Humidity also increases slightly in August, averaging 82% versus May's 79%. For a detailed look at August weather specifics, you can explore Charlestown weather in August.
May and September both offer warm weather, but they differ significantly in terms of precipitation and overall climate feel. 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 around 50 mm (2.0 in) of rainfall spread across 14 days, accompanied by a humidity level of 79%. In contrast, September experiences slightly higher temperatures with a minimum of 25°C (77°F) and a maximum of 29°C (85°F), averaging 28°C (82°F). However, it is notably wetter, with 147 mm (5.8 in) of precipitation over 19 days and a humidity level of 80%. For a detailed look at September’s climate, you can visit Charlestown weather in September.
In comparing the weather between May and October, we observe that both months feature warm temperatures, but October tends to be slightly warmer. In May, the minimum temperature averages around 24°C (75°F) and peaks at 28°C (82°F), with an average of 26°C (79°F). Meanwhile, October starts a bit higher with a minimum of 25°C (77°F) and reaches a maximum of 29°C (85°F), resulting in an average temperature of 27°C (81°F).
Additionally, October experiences more precipitation, with 108 mm (4.3 in) falling over 18 days compared to May's 50 mm (2.0 in) across 14 days. Despite the increased rainfall in October, humidity remains consistent at 79% for both months. For a more detailed look at October weather specifically, you can refer to Charlestown weather in October.
In May, temperatures are warm, with a minimum of 24°C (75°F) and an average of 26°C (79°F), reaching a maximum of 28°C (82°F). During this month, the region experiences about 50 mm (2.0 in) of precipitation over 14 days, accompanied by a humidity level of 79%. In contrast, November maintains a similar temperature range with a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 28°C (83°F). However, November sees an increase in precipitation to 93 mm (3.6 in) over 17 days, while humidity remains constant at 79%. For more details, you can check Charlestown weather in November.
In comparing the weather between May and December, we find that both months feature similar temperature ranges, with a minimum of 24°C (75°F), an average of 26°C (79°F), and a maximum of 28°C (82°F). However, December experiences slightly more rainfall, with a total of 49 mm (1.9 in) over 18 days, compared to May's 50 mm (2.0 in) spread over 14 days. Interestingly, humidity levels remain relatively constant, with May at 79% and December at 78%. For more detailed insights, you can check Charlestown weather in December.
As May unfolds in Charlestown, the weather transitions into a unique blend of warmth and humidity, setting it apart from earlier months. With temperatures consistently soaring to a pleasant average of around 26°C, residents and visitors alike enjoy the lively atmosphere that accompanies this time of year. However, the days come with increased chances of rain, as evidenced by the 14 precipitation days, creating a refreshing contrast to the warmer temperatures. Overall, May's mix of warmth and occasional rains offers a vibrant tropical experience, making it an ideal time for exploration and relaxation. For a deeper insight into the region’s weather patterns, check out Charlestown Climate.