Last updated: August 27, 2025
In Ko Si Chang, Thailand during May, the weather offers a warm tropical experience, with maximum temperatures reaching up to 34°C (93°F) and an average of 29°C (85°F). Visitors can expect balmy evenings, as nighttime lows drop to a comfortable 23°C (74°F). However, May also brings significant precipitation, totaling approximately 160 mm (6.3 in) over the course of the month, with rain on around 19 days. The humidity remains high at 80%, creating a lush and vibrant atmosphere, perfect for embracing the island’s natural beauty amid sporadic showers.
In May, Ko Si Chang, Thailand experiences a delightful taste of warmth, with temperatures making a steady ascent as summer approaches. The month begins with a minimum temperature of 23°C (74°F), rising to an average of 29°C (85°F), reaching a peak of 34°C (93°F). This trend reflects a continuation of April's warmer climate, where highs were also at 34°C (93°F), hinting at the onset of the hotter months ahead. Visitors can expect plenty of sunshine alongside occasional breezes, making it an inviting time for beach adventures and exploring the island's stunning scenery. As the month unfolds, the comfortable averages and high maximums promise a vibrant outdoor atmosphere, perfect for soaking up the tropical charm of this beautiful destination.
May is a remarkable month in Ko Si Chang, Thailand, as it marks the peak of the island's rainy season. With an impressive 160 mm (6.3 in) of rainfall over 19 days, May stands out as the wettest month of the year. This surge in precipitation follows April's substantial 100 mm (3.9 in), highlighting a significant increase and setting the stage for even wetter months ahead. The sky often graces the island with gentle drizzles and sporadic downpours, fostering lush greenery and vibrant landscapes. As the rain transforms the island, these moist conditions make May not only a pivotal period for replenishing natural resources but also a unique time for experiencing Ko Si Chang's tranquil beauty amidst the rain.
In May, Ko Si Chang, Thailand, experiences a significant rise in humidity, reaching 80%, marking a noticeable shift from the previous months. This increase is part of a broader trend observed as the year progresses; April already sees a spike at 70%, but by May, the atmosphere becomes unmistakably more humid. The humidity continues to climb into the summer months, peaking in August at an impressive 88%. This escalation not only creates a lush, vibrant environment but also signals the onset of the tropical season, where warm temperatures combined with high humidity can lead to some steamy days. Travelers and residents alike can expect a muggy ambiance as the island transitions deeper into the wet season.
In May, Ko Si Chang experiences a consistently extreme UV Index of 14, maintaining the high levels seen in April and early summer months. With a burn time of just 10 minutes, sun exposure can lead to serious skin damage, underscoring the need for protective measures if you're planning outdoor activities. This trend of elevated UV radiation continues into June and July, making it crucial to be vigilant about sun safety. As the year progresses, January's UV Index starts at a lower 10 but quickly rises through the months, illustrating the increasing intensity of Thailand's sun. Visitors in May should definitely check the forecast and protect themselves adequately. For more detailed insights on UV levels, visit Ko Si Chang UV Index.
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May brings a delightful continuation of sunshine to Ko Si Chang, Thailand, with 322 hours of radiant daylight. This month stands out as a consistent beacon of brightness, nestled comfortably between the vibrant hours of March and April, both exceeding 320 hours. Following a slightly brighter February, which recorded 298 hours, May maintains the region's reputation for abundant sunshine, setting the stage for ideal outdoor adventures. As summer approaches, the sunlight begins to wane slightly in June, dipping to 305 hours; however, May’s warmth persists, offering visitors the perfect opportunity to enjoy the island's stunning landscapes and outdoor activities under nearly perfect conditions.
In Ko Si Chang, Thailand, the likelihood of sunny weather in May dramatically declines to 33%, following a vibrant February where the chance of sunshine peaks at 75%. As the dry season transitions into the wet months, April witnesses a significant drop to just 18%, hinting at the impending rainy season. This trend continues into June and July, where sunny days become increasingly scarce, plummeting to 18% and 12% respectively. Thus, if you're planning a trip in May, be prepared for the possibility of clouds overshadowing the sun, as this island paradise prepares for the warmer, wetter days ahead.
In Ko Si Chang, Thailand, the arrival of May marks a continuation of the island's balmy 12-hour daylight pattern, which begins to take shape in March and remains steadfast through the summer months. As the year progresses, daylight duration sees minimal fluctuation, providing a consistency that travelers and locals alike can count on. While January and February offer a slightly shorter 11 hours, the increase to 12 hours in March leads into a charming spring and summer filled with ample sunlight. This enduring daylight duration creates an inviting atmosphere to enjoy the island's beauty, as the sun remains a welcoming presence until October, when it once again shifts to shorter days. With this rhythmic pattern, Ko Si Chang provides a captivating blend of light and warmth, perfect for those seeking to bask in its tropical allure.
In May, Ko Si Chang experiences a gentle shift in its breezy landscape, with an average wind speed of 3.9 m/s (9 mph). This moderate wind offers a pleasant respite as temperatures rise approaching summer. Notably, May's winds are slightly calmer than those in March and June, which see peaks of 4.6 m/s (10 mph) and 4.8 m/s (11 mph), respectively. Overall, as the year progresses, a trend emerges: wind speeds tend to climb toward the mid-year months, creating an ideal setting for outdoor activities, especially as locals and tourists alike enjoy the soft, invigorating winds while basking in the island's serene beauty.
Weather in Ko Si Chang varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Ko Si Chang, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present quite contrasting weather conditions. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (93°F), with an average of 29°C (85°F). This month is characterized by higher humidity at 80% and significant rainfall, totaling 160 mm (6.3 in) over about 19 days, making it a rather wet month. In contrast, January offers milder temperatures, with a minimum of 18°C (64°F) and a maximum of 31°C (89°F), resulting in a more comfortable average of 27°C (81°F). Additionally, January features much lower precipitation of only 24 mm (0.9 in) across just 3 days and a humidity level of 59%. For more specific insights, you can check the detailed weather information here: Ko Si Chang weather in January.
When comparing the weather in May and February, May tends to be significantly warmer and more humid. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (93°F), with an average of 29°C (85°F). This month also sees substantial rainfall, totaling 160 mm (6.3 inches) over 19 days, resulting in a high humidity level of around 80%. In contrast, February features milder conditions with minimum temperatures of 21°C (70°F) and maximum temperatures reaching 32°C (89°F), averaging 27°C (82°F). Additionally, February experiences much less precipitation, only 19 mm (0.7 inches) over just 4 days, along with a lower humidity level of 58%. For more detailed insights on February weather, visit Ko Si Chang weather in February.
When comparing the weather between March and May, we see some notable differences. March tends to have slightly cooler temperatures, with averages around 29°C (84°F) and maximums reaching 32°C (90°F), while May heats up more, with average temperatures at 29°C (85°F) and maximums hitting 34°C (93°F). Additionally, May is significantly wetter, receiving about 160 mm (6.3 in) of precipitation over 19 days, compared to March's much drier climate with only 38 mm (1.5 in) over 7 days. The humidity is also much higher in May at 80%, in contrast to March’s 61%. For more detailed information, you can check Ko Si Chang weather in March.
In comparing the weather between May and April, both months showcase similar average temperatures, with a minimum of 23°C (74°F) in May and 22°C (71°F) in April, and both reaching a maximum of 34°C (93°F). However, May experiences significantly higher precipitation, totaling 160 mm (6.3 in) over 19 days, compared to April's 100 mm (3.9 in) over just 14 days. Additionally, humidity levels are elevated in May at 80%, while April maintains a slightly lower humidity of 70%. For more detailed information, visit Ko Si Chang weather in April.
In comparing the weather between May and June, both months exhibit warm temperatures, with May showcasing a slightly wider range. May averages a minimum temperature of 23°C (74°F) and a maximum of 34°C (93°F), while June has higher minimums at 26°C (80°F) and slightly lower maximums at 32°C (90°F). In terms of precipitation, May is notably wetter with 160 mm (6.3 in) across 19 days, compared to June's 99 mm (3.9 in) over 21 days, indicating that while June has a few more rainy days, the overall rainfall is significantly less. The humidity also sees a slight increase in June, rising to 85% from May’s 80%. For those interested in detailed weather patterns, Ko Si Chang weather in June offers more insights.
In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (93°F), with an average of 29°C (85°F). This month experiences significant rainfall, totaling 160 mm (6.3 in) over 19 days, along with humidity levels around 80%. In contrast, July sees slightly higher minimum temperatures at 26°C (79°F) and a lower maximum of 32°C (90°F), with an average temperature of 29°C (84°F). Although July is wetter with 134 mm (5.3 in) of precipitation spread over 23 days, humidity rises to 86%. For more detailed insights on July weather, check out Ko Si Chang weather in July.
When comparing the weather in May and August, we see some notable differences and similarities. May features a slightly wider temperature range, with minimums around 23°C (74°F) and maximums peaking at 34°C (93°F), while August's temperatures are more stable, with minimums at 26°C (79°F) and maximums reaching 31°C (89°F). Precipitation is fairly high in both months, with May receiving 160 mm (6.3 in) over 19 days compared to August's 138 mm (5.4 in) spread across 22 days. However, August tends to be more humid, with levels reaching 88% compared to 80% in May. For more details on August conditions, you can check out Ko Si Chang weather in August.
May and September present distinct weather patterns, highlighting the transition from late spring to early autumn. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 34°C (93°F), with an average temperature of 29°C (85°F). The month experiences considerable rainfall, with 160 mm (6.3 in) over 19 days, resulting in a humidity level of 80%. In contrast, September sees a slightly warmer temperature range, with a minimum of 25°C (78°F) and a maximum of 32°C (89°F), averaging 28°C (83°F). However, it is also wetter, receiving 250 mm (9.8 in) of rain over 25 days and higher humidity at 87%. For more detailed insights into weather conditions, you can visit Ko Si Chang weather in September.
In comparing the weather between May and October, we see notable similarities and differences. May typically experiences warmer temperatures, with an average of 29°C (85°F) compared to October's 28°C (82°F); however, October's minimum temperature is slightly higher at 24°C (76°F) compared to May's 23°C (74°F). Rainfall is more pronounced in October, with 232 mm (9.1 in) spread over 22 days, compared to May's 160 mm (6.3 in) over 19 days. Additionally, humidity levels are higher in October at 83%, compared to May's 80%. For more detailed insights on the specific weather conditions in October, you can check Ko Si Chang weather in October.
May and November both experience warm temperatures, though May is generally hotter, with average highs reaching 34°C (93°F) compared to November's 33°C (91°F). The humidity remains quite high in both months, with May slightly surpassing November at 80% versus 78%. However, the precipitation levels differ significantly; May sees a much heavier rainfall of 160 mm (6.3 in) over 19 days, while November experiences relatively lighter rainfall of just 56 mm (2.2 in) across 11 days. For more detailed information about weather conditions specifically in November, you can visit Ko Si Chang weather in November.
In May, the weather tends to be much warmer and more humid, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 34°C (93°F) and an average of 29°C (85°F). The month is marked by significant rainfall, with about 160 mm (6.3 in) of precipitation over 19 days, making it one of the wetter months of the year. In contrast, December sees milder conditions, featuring a minimum temperature of 18°C (64°F), an average of 27°C (81°F), and a maximum of 32°C (91°F). Rainfall drops dramatically to only 28 mm (1.1 in) over just 3 days, resulting in lower humidity levels at 70%. For more detailed weather information, you can visit Ko Si Chang weather in December.
In May, Ko Si Chang experiences a distinctly warmer and more humid atmosphere compared to other months. With average temperatures climbing to a sultry 29°C, the island becomes a magnet for those seeking a tropical escape. While the allure of sunny days continues, May also brings increased rainfall, contributing to the 80% humidity that can make the air feel heavy. Travelers should prepare for frequent showers, with nearly 19 days of precipitation expected throughout the month. This combination of warmth and wetness sets May apart as a time when the island’s lush beauty thrives, inviting you to explore its vibrant landscapes. For more detailed insights on the region's weather patterns, visit Ko Si Chang Climate.