Last updated: August 27, 2025
Discover the enchanting climate of Koh Tao, Thailand in December, where temperatures typically range from a pleasant 24°C (75°F) at night to a daytime maximum of 29°C (85°F). Embrace the tropical ambiance with an average temperature of around 27°C (81°F), perfect for outdoor adventures. However, be prepared for occasional downpours, as the island experiences about 191 mm (7.5 in) of rainfall over 14 days, contributing to the lush scenery. With an average humidity of 83%, visitors will feel the warmth but can also enjoy refreshing breezes. December serves as a vibrant time to explore Koh Tao's stunning beaches and rich marine life.
In December, Koh Tao, Thailand, embraces a tropical allure with its temperatures offering a delightful range. The month starts with a mild minimum of 24°C (75°F), creating a comfortable atmosphere for beach lovers and adventurers alike. As the average temperature hovers around 27°C (81°F), daytime highs reach up to 29°C (85°F), providing perfect conditions for water sports, sunbathing, and exploring the island's stunning marine life. This trend of warm and stable temperatures continues from previous months, making December an inviting time to soak in the beauty of Koh Tao. The blend of humidity and warmth ensures that visitors can enjoy the island's vibrant scenery and lush landscapes while basking in the sunshine.
In December, Koh Tao experiences a notable shift in precipitation patterns as the region transitions towards the dry season. With an average rainfall of 191 mm (7.5 in) over approximately 14 days, the island sees a decrease from the heavy downpours of November, which recorded 281 mm. The month marks a decline in rainfall frequency compared to the wetter months preceding it, with fewer rainy days and a more moderate atmosphere. This reduction in precipitation not only enhances the island’s charm but also creates a more inviting environment for visitors seeking to enjoy its stunning beaches and vibrant marine life before the peak season unfolds.
As December settles in Koh Tao, Thailand, the humidity remains notably high at 83%, reflecting a continuation of the island's tropical climate. Following a trend that began in the warmer months, humidity levels peaked from June through August, reaching an impressive 88% in August. However, as the year closes, a gradual decline is evident from the extreme highs, with December offering a somewhat more comfortable atmosphere than its summer counterparts. Despite this decrease, the humidity remains on the higher side, characteristic of this vibrant island paradise, making it essential for visitors to embrace the warm, steamy surroundings while enjoying the breathtaking natural beauty Koh Tao has to offer.
In Koh Tao, Thailand, December marks a continued trend of extreme UV exposure, maintaining a UV Index of 11 with a consistent burn time of just 10 minutes. This level of intensity, similar to the preceding months, emphasizes the essential need for sun protection, regardless of the season. Following a peak in March and April at 15, the UV Index demonstrates a slight decrease as the year ends, yet it remains critical for visitors and locals alike to stay vigilant against harmful rays. As you soak in the stunning beauty of this tropical paradise, remember to check the daily UV index for safety tips. For more detailed insights, visit Koh Tao UV Index.
UV Risk Categories
December in Koh Tao, Thailand, shines brightly with 306 hours of glorious sunshine, marking a slight dip from the sun-kissed heights of March, which boasts the most hours at 345. As the year draws to a close, the weather remains inviting, making December an ideal time for beach lovers to bask in the golden rays. The month transitions smoothly from the slightly lower sunshine in September and October, averaging around 279 to 286 hours, with a cozy return to the sun-drenched days typical of the island's festive season. This trend reflects a consistent pattern of generosity in sunlight, especially during the early months of the year, ensuring that Koh Tao is a paradise for those seeking warmth and beauty as they wrap up their year. Overall, December encapsulates the charm of Koh Tao's tropical climate, attracting visitors eager to embrace its serene beaches and vibrant underwater world.
In December, Koh Tao enjoys a 42% chance of sunny weather, providing a refreshing reprieve from the preceding rainy months of October and November, both of which see only a 10% likelihood of sunshine. This notable increase hints at a trend towards more favorable weather as the year winds down, although it's still lower than the sun-soaked months of February and March, which boast chances of 60% and 53%, respectively. As visitors flock to this idyllic island during the festive season, December marks a transition where the days brighten, hinting at a delightful escape into tropical paradise before the new year unfolds.
In Koh Tao, Thailand, December marks the return to 11 hours of daylight, echoing the trend observed in both January and February. As the year progresses from March to August, daylight duration peaks at a consistent 12 hours, providing ample time for exploration and relaxation under the tropical sun. This stable pattern shifts once again in the latter months, with October and November also offering 11 hours of daylight, signaling a gentle transition into the shorter days of the dry season. Visitors can relish in the beauty of Koh Tao's vibrant scenery, enjoying the balance of sunshine and serenity throughout this enchanting time of year.
As the year draws to a close, December in Koh Tao unveils a refreshing change in the breeze, with an average wind speed of 6.1 m/s (14 mph), the highest of the year. This increase from the preceding months signals a shift from the milder autumn winds, which hovered around 5.5 m/s in November and 5.2 m/s in October. The island's lush landscapes and crystal-clear waters are energized by this spirited gust, providing ideal conditions for those seeking adventure on the seas. With the transition from the slower summer months, such as April's gentle 3.7 m/s and May's 4.2 m/s, to the brisk December winds, travelers can enjoy invigorating activities like sailing and snorkeling amidst stunning tropical scenery. Koh Tao's December winds embody the dynamic essence of island life, offering both tranquility and exhilaration to visitors as they embrace the vibrant atmosphere of the holiday season.
Weather in Koh Tao varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Koh Tao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather tends to be warm and humid, with minimum temperatures around 24°C (75°F) and average highs reaching 29°C (85°F). This month also experiences significant rainfall, averaging 191 mm (7.5 in) over approximately 14 days, resulting in a high humidity level of 83%. In contrast, January sees slightly cooler temperatures, with an average high of 28°C (84°F) and a similar minimum of 24°C (76°F). The precipitation decreases to 148 mm (5.8 in) over about 10 days, contributing to a lower humidity level of 72%. For more details, check out Koh Tao weather in January.
December and February present similar temperatures, with both months averaging around 27°C (81°F) and peaking at 29°C (85°F). However, December is notably wetter, receiving 191 mm (7.5 in) of precipitation over 14 days, compared to just 37 mm (1.5 in) over 7 days in February. Additionally, the humidity in December is higher at 83%, while February's humidity drops to a more comfortable 68%. This makes February a drier and less humid month, ideal for outdoor activities. For a detailed look at the February weather in Koh Tao, check out Koh Tao weather in February.
In December, the weather tends to be warmer and wetter, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F) and an average of 27°C (81°F). The month sees a significant amount of rainfall, totaling 191 mm (7.5 in) over 14 days, coupled with high humidity levels at 83%. In contrast, March offers a slightly warmer climate, with temperatures varying from 25°C (78°F) to 30°C (86°F) and an average of 28°C (82°F). Notably, March experiences much less precipitation, at only 33 mm (1.3 in) across just 6 days, and lower humidity at 68%. For more detailed insights, you can visit Koh Tao weather in March.
In December, Koh Tao experiences warm temperatures with a minimum of 24°C (75°F) and an average of 27°C (81°F), peaking at 29°C (85°F). The month is characterized by high humidity at 83% and substantial rainfall, totaling 191 mm (7.5 in) over 14 days. In contrast, April offers slightly higher temperatures, with minimums of 25°C (78°F) and an average of 28°C (83°F), reaching a maximum of 31°C (88°F). Though it has lower total precipitation at 133 mm (5.3 in) spread over 16 days, the humidity drops to 69%. This makes April a bit drier and more comfortable, especially for outdoor activities. For more details, check Koh Tao weather in April.
In comparison to December, May experiences slightly warmer temperatures, with minimums of 26°C (79°F) compared to December’s 24°C (75°F). The average temperature rises to 29°C (84°F) in May, peaking at 31°C (89°F), while December’s averages are 27°C (81°F) with a maximum of 29°C (85°F). Despite being warmer, May has lower overall precipitation at 153 mm (6.0 in) and slightly fewer rainy days (22) compared to December’s 191 mm (7.5 in) and 14 rainy days. Additionally, humidity levels are a bit lower in May at 77%, compared to 83% in December. For a more detailed look at May's weather, you can visit Koh Tao weather in May.
In December, the weather typically features warm temperatures, with a minimum of 24°C (75°F) and an average high of 29°C (85°F). This month experiences significant rainfall, totaling 191 mm (7.5 in) over approximately 14 days, along with high humidity levels at 83%. In contrast, June offers slightly warmer conditions, with a minimum of 26°C (79°F) and an average maximum of 31°C (89°F). Although June has less total precipitation at 137 mm (5.4 in), it has more rainy days, averaging around 19. The humidity is also marginally higher in June at 86%. For more detailed information about the weather during this month, visit Koh Tao weather in June.
In December, the weather tends to be slightly cooler, with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F). This month experiences considerable precipitation, totaling 191 mm (7.5 in) over roughly 14 days, and the humidity is relatively high at 83%. Conversely, July sees slightly warmer temperatures, with averages between 26°C (79°F) and 31°C (88°F). Although July has less total rainfall at 113 mm (4.4 in), it is spread across 19 days, leading to a higher humidity level of 86%. For more detailed information on July's weather, you can visit Koh Tao weather in July.
In December, the weather in Koh Tao features slightly cooler temperatures, with daily averages around 27°C (81°F) and maximums peaking at 29°C (85°F). Despite being cooler, December sees more precipitation, totaling 191 mm (7.5 in) over approximately 14 days, contributing to a relatively high humidity level of 83%. Conversely, August experiences warmer conditions, with minimum temperatures of 26°C (79°F) and highs reaching up to 31°C (88°F). While it has lower rainfall at 133 mm (5.2 in), August is marked by frequent rain, occurring over 21 days, along with a higher humidity of 88%. For more detailed information, you can check Koh Tao weather in August.
In comparing the weather conditions of December and September, December tends to have slightly lower temperatures, with averages ranging from a minimum of 24°C (75°F) to a maximum of 29°C (85°F), while September maintains a higher range with a minimum of 26°C (78°F) and a maximum of 30°C (86°F). Although both months experience similar levels of precipitation, December sees an average of 191 mm (7.5 in) over 14 rainy days, while September has a comparable 192 mm (7.6 in) distributed across 22 days. Additionally, humidity levels are slightly lower in December at 83%, compared to September's 87%. For more details on September weather, you can check out Koh Tao weather in September.
In comparing the weather between December and October, we observe some notable differences. December experiences slightly cooler temperatures, with a minimum of 24°C (75°F) and a maximum of 29°C (85°F), while October sees a higher minimum of 25°C (77°F) and a maximum of 30°C (86°F). However, October is wetter than December, receiving 242 mm (9.5 in) of precipitation over 27 days compared to December's 191 mm (7.5 in) over just 14 days. Additionally, humidity levels are marginally higher in October at 86% versus December's 83%. For a more detailed look at October weather, you can refer to Koh Tao weather in October.
In comparing the weather between December and November, we notice that both months have similar temperature ranges, with December showing a slight decrease in the minimum temperature (24°C vs. 25°C in November) but maintaining an average and maximum temperature of 27°C and 29°C, respectively. However, December experiences significantly less rainfall, with only 191 mm compared to November's 281 mm, and fewer rainy days (14 days in December versus 22 in November). Additionally, humidity levels are slightly lower in December at 83%, compared to 87% in November. For more detailed insights on November's weather, check out Koh Tao weather in November.
As December settles in on Koh Tao, the weather feels pleasantly warm, with temperatures typically hovering around a comfortable 27°C (81°F). While the humidity remains high at 83%, the island's scenic beauty is enhanced by a mix of cooler breezes. However, December also brings increased rainfall, making it one of the wetter months with about 14 days of precipitation. Despite the rain, the vibrant underwater activity and lush landscapes make this month uniquely captivating compared to the drier, hotter months preceding it. For a deeper dive into how December fits into the larger context of Koh Tao's climate, check out Koh Tao Climate.