Last updated: August 27, 2025
June in Ko Samui, Thailand is characterized by a tropical climate, with temperatures ranging from a comfortable minimum of 26°C (79°F) to a maximum of 32°C (89°F), averaging around 28°C (84°F). This month also brings high humidity levels at 86%, making the air feel warm and inviting. Visitors should prepare for occasional rain, as 18 days of precipitation contribute to a total of 96 mm (3.8 in). Despite the showers, the lush landscapes and vibrant island atmosphere make June a captivating time to explore this stunning destination.
In June, Ko Samui embraces the heat of summer with temperatures that bring a warm tropical embrace. The island sees a minimum of 26°C (79°F) at night, while daytime highs often soar to 32°C (89°F), coupled with a steady average of 28°C (84°F) throughout the month. This lays the foundation for balmy beach days and vibrant outdoor activities. As June marks the transition from the hotter months of April and May, it's apparent that the warmth is consistent, paving the way for a delightful vacation vibe, though occasional rain showers may refresh the landscape. With temperatures remaining mild in the evenings, visitors can enjoy the island's renowned nightlife, all while keeping cool in the enchanting tropical atmosphere.
In June, Ko Samui experiences a notable shift in its precipitation patterns, welcoming 96 mm (3.8 in) of rain spread across 18 days, marking a peak in the wet season. While this is a moderate amount compared to the torrential downpours of the following months, it signifies a consistent wet weather rhythm. The island's tropical climate sees a gradual increase from the drier months of February and March, culminating in a lively blend of lush greenery and revitalized landscapes. As June transitions into the peak monsoon months of October and November, the precipitation trends hint at the dynamic interplay between humidity and sunshine, creating a vibrant yet tranquil tropical ambiance perfect for travelers seeking both adventure and relaxation.
As the tropical climate of Ko Samui, Thailand, progresses into June, humidity levels surge to 86%, marking a significant increase from the preceding months. While January and February exhibit more comfortable humidity levels around 68-72%, the onset of the rainy season in May brings a notable jump to 77%. June's soaring humidity is part of a trend that continues into the summer months, with July and August maintaining similar levels, peaking at 88%. This pattern suggests that visitors should prepare for a hot and humid environment, especially as the island embraces its lush monsoon season, creating an inviting yet steamy atmosphere for travelers.
In June, the UV Index in Ko Samui, Thailand, reaches 13, placing it firmly within the extreme exposure category. This persistent intensity mirrors the preceding months, where UV levels have consistently been high, peaking at 15 in March and April. With a remarkably short burn time of just 10 minutes across these months, sun safety is paramount for both locals and visitors. As the rainy season approaches later in the year, the UV Index does show signs of slight fluctuation, yet the extreme risk remains a constant theme from January through October. For those planning outdoor activities during this peak month, it's crucial to stay informed and protected. For more insights, consider checking the detailed sun exposure data at Ko Samui UV Index.
UV Risk Categories
June in Ko Samui, Thailand, shines brightly with an impressive 308 hours of sunshine, maintaining a consistent level of bright days similar to the previous month. When analyzing the year, it's clear that March leads the way, boasting a remarkable 346 hours, setting the stage for sun-seekers. The months of April and May also enjoy generous sunlight, making them ideal for travelers looking to bask in the glow. As summer months approach, June's sunlight is part of a steady trend that continues into July and August, with slight variations in hours. This captivating pattern of ** abundant sunshine** makes Ko Samui an irresistible destination for those yearning for warmth and vibrant beach experiences.
In Ko Samui, Thailand, June marks the onset of the rainy season, and the likelihood of sunny weather takes a noticeable dip, with only a 22% chance of sun. This trend of diminishing sunshine begins in May, continuing to decline through the summer months, peaking at a mere 18% in July before hitting a low of 9% in August. The sun makes a modest comeback in September, but it remains shrouded by clouds for much of the season. Unlike the vibrant sunshine seen in February and March, June's weather often leans towards overcast skies and monsoon showers, inviting travelers to embrace the island's lush greenery and tranquil ambiance rather than basking in the sun.
In Ko Samui, Thailand, June marks a continuation of the island's radiant climate, boasting approximately 12 hours of daylight each day. This consistent daylight duration reflects a larger trend where the year is characterized by stable sunlight, with January and February offering slightly shorter days at 11 hours. As the seasons transition into the warmer months, March through May see a gradual increase, culminating in June, July, and August, all featuring an abundant 12 hours of daylight. This equable pattern provides a perfect backdrop for both relaxation and adventure, assuring visitors can enjoy the vibrant beauty of this tropical paradise well into the evening. As the year progresses towards October, daylight begins to wane slightly, returning to 11 hours—yet the enchanting experiences of Ko Samui remain ever-present.
In June, Ko Samui experiences a gentle uptick in wind speed, averaging 4.8 m/s (11 mph), making it a delightful time for those who enjoy a moderate breeze. Following a slightly quieter April and May, the winds begin to pick up again, creating a refreshing atmosphere as the island transitions into the bustling summer months. This subtle increase not only enhances the beach experience but also sets the tone for the incoming July, which sees the winds reach their peak at 5.4 m/s (12 mph). Overall, June serves as a harmonious balance between tranquility and invigorating breezes, inviting both relaxation and adventure on this tropical paradise.
Weather in Ko Samui varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Ko Samui, focusing on differences in temperature, rainfall, humidity, and UV levels.
June and January in Ko Samui present notably different weather conditions. June features higher temperatures, with a minimum of 26°C (79°F) and an average of 28°C (84°F), compared to January, which has slightly cooler temperatures, starting at a minimum of 24°C (76°F). While June showcases warmer weather, it also comes with increased humidity at 86% and more rainy days, totaling 18 days and 96 mm (3.8 in) of precipitation. In contrast, January experiences lower humidity at 72%, with less rainfall overall—144 mm (5.7 in) over 13 days. For a more detailed look into January weather in Ko Samui, you can check this link: Ko Samui weather in January.
June and February present quite distinct weather patterns. In June, temperatures range from a minimum of 26°C (79°F) to a maximum of 32°C (89°F), with an average of 28°C (84°F). This month experiences significantly higher precipitation, totaling 96 mm (3.8 in) over 18 days, along with elevated humidity levels of 86%. In contrast, February offers warmer but milder conditions, with temperatures varying from 25°C (77°F) to 28°C (83°F) and an average of 27°C (81°F). Precipitation is considerably lower at 39 mm (1.5 in) across just 8 days, and humidity is also reduced to 68%. For a closer look at the specifics of February weather, visit Ko Samui weather in February.
June and March both feature warm temperatures in Ko Samui, with June slightly warmer overall. June has minimum temperatures of 26°C (79°F) and a maximum of 32°C (89°F), while March ranges from 25°C (78°F) to a maximum of 30°C (86°F). Although the average temperatures in both months are quite similar at around 28°C (82°F to 84°F), June sees significantly more rainfall, with 96 mm (3.8 in) over 18 days compared to March's 38 mm (1.5 in) over just 7 days. Additionally, June's humidity is higher at 86%, compared to March's 68%, making it feel rather stickier during the early summer month. For a detailed look at weather patterns, check out Ko Samui weather in March.
In comparing the weather of June and April, both months boast similar temperature ranges, with June experiencing slightly higher maximum temperatures, peaking at 32°C (89°F) compared to April's 31°C (88°F). However, April has a notably higher precipitation level, receiving 144 mm (5.7 in) over 15 days, while June sees 96 mm (3.8 in) spread across 18 days, indicating a more consistent rainfall pattern. Additionally, June's humidity is significantly higher at 86%, while April's is more moderate at 69%. For a closer look at April's weather conditions, you can refer to Ko Samui weather in April.
When comparing the weather between May and June, both months exhibit similar temperature ranges, with minimums of 26°C (79°F), averages of 28°C (84°F), and maximums of 32°C (89°F). However, June sees a decrease in precipitation, recording 96 mm (3.8 in) over 18 days, whereas May experiences higher rainfall with 126 mm (5.0 in) spread over 22 days. Additionally, June has a slightly higher humidity level at 86%, compared to May's 77%. For more details on the weather patterns, you can explore Ko Samui weather in May.
In comparing the weather between June and July, both months share similar temperature ranges, with June experiencing minimums of 26°C (79°F) and maximums of 32°C (89°F), while July has a slight dip in max temperatures at 31°C (88°F). Average temperatures remain consistent, around 28°C (84°F) in June and 28°C (83°F) in July. Precipitation levels are also somewhat comparable; June sees 96 mm (3.8 in) over 18 days, whereas July experiences less rain, totaling 79 mm (3.1 in) across 17 days. Humidity remains steady at 86% for both months. For more detailed insights, visit Ko Samui weather in July.
In comparing the weather between June and August, both months exhibit high temperatures with minimal variation: June has average temperatures ranging from 26°C (79°F) to 32°C (89°F), while August shows slightly lower maximums, peaking at 31°C (89°F). Humidity levels remain high in both months, with June at 86% and August slightly higher at 88%. Precipitation is notable in both months, with June receiving 96 mm (3.8 in) over 18 days and August experiencing a slightly lower amount of 80 mm (3.1 in) over the same number of days. For more details about the specific weather conditions in August, you can visit Ko Samui weather in August.
In June, the weather tends to be hot and humid, with average temperatures ranging from 26°C (79°F) to a maximum of 32°C (89°F). The month sees about 96 mm (3.8 in) of rainfall over 18 days, resulting in a humidity level of 86%. In contrast, September offers slightly cooler maximum temperatures, peaking at 30°C (86°F), but experiences increased rainfall, with 151 mm (5.9 in) over 21 days. The humidity remains high at 87%. For more detailed information, you can check out the weather specifics here: Ko Samui weather in September.
June and October in Ko Samui exhibit relatively similar temperatures, with June experiencing a slight edge: minimums of 26°C in June compared to 25°C in October, and averages of 28°C in June versus 27°C in October. However, October sees notably higher precipitation, with 241 mm falling over 28 days, compared to June's 96 mm across 18 days. Despite this increase in rainfall, both months maintain high humidity levels of 86%. For a more detailed overview, visit Ko Samui weather in October.
In June, the weather is characterized by warm temperatures, with a minimum of 26°C (79°F) and an average of 28°C (84°F), peaking at a maximum of 32°C (89°F). However, it experiences significant rainfall, totaling 96 mm (3.8 in) over 18 days, accompanied by high humidity at 86%. In contrast, November brings slightly cooler temperatures, with a minimum of 25°C (77°F) and an average of 27°C (81°F), reaching a maximum of 29°C (85°F). Nevertheless, November sees a substantial increase in precipitation, with 336 mm (13.2 in) spread across 24 days and a marginally higher humidity level of 87%. For a detailed overview of weather conditions in November, you can refer to Ko Samui weather in November.
When comparing the weather in June and December, it becomes clear that both months are characterized by warm temperatures, but June tends to be slightly hotter. In June, the temperatures range from a minimum of 26°C (79°F) to a maximum of 32°C (89°F), with an average of 28°C (84°F). Additionally, June experiences higher humidity at 86% and 96 mm (3.8 in) of precipitation over 18 days. In contrast, December sees slightly cooler temperatures with a minimum of 24°C (76°F) and a maximum of 29°C (84°F), averaging around 27°C (80°F). However, December is notably wetter, receiving 207 mm (8.1 in) of rainfall over 17 days, while maintaining a lower humidity of 83%. For more information on December weather, you can visit Ko Samui weather in December.
In June, Ko Samui welcomes visitors with warm temperatures, averaging around 28°C (84°F), creating a pleasant tropical atmosphere. While daytime highs can soar to 32°C (89°F), the month is also characterized by increased humidity and a higher frequency of rain, with approximately 18 days seeing some precipitation. This sets June apart from the drier months that precede it, making it a transitional period in the island's climate. Despite the showers, the lush landscape flourishes, offering a vibrant backdrop for exploring the island's beauty. For a deeper understanding of what to expect throughout the year, check out the comprehensive insights provided on Ko Samui Climate.