Last updated: August 27, 2025
In August, Chiang Mai, Thailand experiences a tropical climate characterized by its warm temperatures and significant rainfall. With maximum highs reaching 36°C (97°F) and an average temperature of 27°C (81°F), the days can feel quite hot, while the minimum temperature hovers around 23°C (73°F) during the nights. This month sees an impressive precipitation total of 268 mm (10.5 in), spread across 26 rainy days, making it one of the wettest times of the year. The humidity levels soar to 91%, creating a thick, tropical atmosphere that residents and visitors alike must navigate.
In August, Chiang Mai experiences a warm and humid climate as the rainy season continues its grip on the region. With minimum temperatures hovering around 23°C (73°F) and averages settling at a comfortable 27°C (81°F), it’s a month of tropical warmth, though slightly cooler than the scorching heat of the preceding months. The maximum temperatures reach 36°C (97°F), providing ample opportunity for outdoor adventures, albeit alongside those occasional downpours. As the month progresses, the weather melds a sense of vibrant greenery with the cozy ambiance, encouraging visitors to explore lush landscapes while staying hydrated. This blend of warmth and occasional rain not only marks August as a transitional period but also enhances the charm of Chiang Mai’s natural beauty.
August is a significant month for precipitation in Chiang Mai, Thailand, where rainfall reaches its peak with a staggering 268 mm (10.5 in) accumulated over 26 days. This climactic surge follows a gradual increase from the earlier months, particularly from June and July, when the city experiences steady showers that set the stage for August's deluge. The combination of the intense rainfall and nearly every day marked by precipitation highlights the peak of the rainy season, illustrating how August plays a pivotal role in replenishing the region’s natural resources. As the rains taper off into September, which sees a notable decline to 198 mm (7.8 in), the pattern emphasizes a distinct transition, marking August as the month when Chiang Mai truly feels the embrace of its tropical monsoon climate.
In August, Chiang Mai experiences its most intense humidity, reaching a staggering 91%. This significant rise is part of a seasonal trend that sees humidity levels climbing steadily from the drier months of January through April, where readings dip to around 36-51%. As the region transitions into the monsoon season, May's 63% marks a noticeable shift, culminating in the peak levels of July and August. Following this peak, humidity begins to ease in September, settling at 83%, before gradually declining again towards the end of the year. Thus, August not only represents a high point in moisture but also serves as a reminder of the dramatic transformation of Chiang Mai’s weather as it moves into the lush monsoon period.
In August, Chiang Mai experiences a UV Index of 14, placing it firmly in the extreme exposure category, with a burn time as short as 10 minutes. This trend of heightened UV levels during the summer months reflects a continuous pattern from May through September, where the UV Index consistently peaks at 14. Travelers and residents alike should remain vigilant, as prolonged exposure in these conditions can lead to serious sunburns in under a quarter of an hour. As the rainy season unfolds in September, the UV Index remains high, emphasizing the need for adequate sun protection throughout the summer. For more detailed insights, visit the Chiang Mai UV Index.
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In August, Chiang Mai basks in a warm embrace of sunshine, with an average of 233 hours of bright daylight. This marks a noticeable dip from the peak hours of March and April, which basked in over 300 hours. As the rainy season approaches, the skies begin to cloud, reducing sunshine slightly compared to the summer months. Despite this decrease, August's sunlight still combines harmoniously with the lush greenery, creating a vibrant atmosphere filled with life. This seasonal shift sets the stage for a refreshing transition into the autumn months, where sunshine returns to slightly elevated levels, making Chiang Mai an enchanting destination year-round.
In August, the likelihood of sunny weather in Chiang Mai, Thailand takes a notable dip, with a mere 11% chance of sunshine. This decline follows a consistent trend of decreasing sunlight from the warmer months of April through July, where the chances lingered above 30%, but plummet as the rainy season intensifies. Comparatively, this month is among the cloudiest, making sunshine a rare treat. As locals and travelers alike seek out clear skies, August stands in stark contrast to the 82% sun-filled days of February and 83% in March, highlighting the regional shift towards a wetter, cooler time of year.
In August, Chiang Mai enjoys a delightful 12 hours of daylight, marking a transition from the lush, sunlit days of the earlier summer months. As the region eases into the rainy season, the daylight duration subtly shifts back from the peak of 13 hours seen from May to July. This trend reflects a gradual decrease in sunlight, setting the stage for a picturesque blend of vibrant greens and dramatic skies. As the month progresses, both locals and visitors can revel in the warm afternoons and cooler evenings, hallmark features of this enchanting time of year in northern Thailand.
In August, the gentle breezes of Chiang Mai continue the pattern established over the summer months, with an average wind speed of 1.2 m/s (3 mph). This slight decrease in wind compared to June, which peaked at 1.4 m/s (3 mph), creates a tranquil atmosphere, perfect for those looking to enjoy the beauty of the city’s lush surroundings. Interestingly, the wind speeds have remained relatively consistent throughout the season, hovering around this calm pace. As the year progresses into September and October, a gradual decline to 1.0 m/s and 0.9 m/s respectively hints at the calming embrace of autumn, inviting visitors to savor the serene ambiance of Chiang Mai's natural landscapes.
Weather in Chiang Mai varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Chiang Mai, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between August and January, the differences are striking. August typically sees much warmer temperatures, with a minimum of 23°C (73°F) and an average of 27°C (81°F), peaking at a scorching 36°C (97°F). This month is also characterized by high humidity at 91% and significant rainfall, averaging 268 mm (10.5 in) over about 26 days. In contrast, January offers a much cooler climate, with minimum temperatures dropping to 10°C (51°F) and an average of 22°C (72°F), reaching a maximum of 34°C (93°F). The humidity in January is considerably lower at 51%, and it experiences minimal precipitation, with only 10 mm (0.4 in) over just 2 days. For more detailed information, you can visit Chiang Mai weather in January.
August and February offer strikingly different weather conditions. In August, temperatures range from a minimum of 23°C (73°F) to a maximum of 36°C (97°F), with an average of 27°C (81°F). This month also experiences heavy precipitation, totaling 268 mm (10.5 in) across 26 days, accompanied by high humidity levels of 91%. In contrast, February presents a more pleasant climate, with temperatures starting at a cooler minimum of 11°C (53°F) and peaking at 36°C (97°F), averaging at 24°C (75°F). Notably, February sees very little rain, with just 2 mm (0.1 in) and no rainy days, leading to a significantly lower humidity of 46%. For more detailed insights into February weather, visit Chiang Mai weather in February.
In comparing the weather patterns of August and March, significant contrasts emerge. August experiences a warm and humid climate with average temperatures around 27°C (81°F) and high humidity levels reaching 91%. This month is also marked by substantial rainfall, totaling 268 mm (10.5 in) over approximately 26 days. In contrast, March boasts slightly cooler minimum temperatures of 16°C (60°F) and comfortable averages of 28°C (82°F), with a maximum that can peak at 40°C (104°F). The month is notably dry, with only 1 mm (0.1 in) of precipitation and no rainy days recorded. Such weather conditions make March a drier and more comfortable month compared to the humid and wet August. For more detailed information, you can visit Chiang Mai weather in March.
When comparing the weather in August and April, it is clear that each month presents a distinct climate profile. August typically features a minimum temperature of 23°C (73°F) and an average of 27°C (81°F), with maximums reaching up to 36°C (97°F). This month is marked by high humidity at 91% and significant rainfall, averaging 268 mm (10.5 in) over 26 days. In contrast, April showcases warmer temperatures, with a minimum of 18°C (65°F) and an impressive average of 29°C (85°F), peaking at a scorching 42°C (107°F). Precipitation during this month is considerably lower, at 42 mm (1.7 in) over just 6 days, and humidity sits at a much more comfortable 36%. For more details, you can check Chiang Mai weather in April.
In comparison to May, August experiences slightly cooler temperatures with a minimum of 23°C (73°F) and an average of 27°C (81°F), peaking at 36°C (97°F). May, on the other hand, boasts a higher average temperature of 30°C (86°F) and a maximum sweltering at 41°C (106°F). Precipitation plays a significant role in August, with a substantial 268 mm (10.5 in) falling over 26 days, contrasted by May's relatively dry climate with only 82 mm (3.2 in) over 9 days. Additionally, the humidity in August remains high at 91%, whereas May has a much lower humidity level of 63%. For more details, you can check this link: Chiang Mai weather in May.
When comparing the weather in August and June, both months feature similar minimum temperatures, averaging around 23°C (73°F). However, June generally experiences higher maximum temperatures, reaching up to 40°C (104°F), compared to August's maximum of 36°C (97°F). Precipitation is significantly greater in August, with 268 mm (10.5 in) falling over 26 days, while June sees only 145 mm (5.7 in) over 17 days. The humidity also tends to be higher in August at 91%, compared to June's 81%. For more specific details, you can check out Chiang Mai weather in June.
When comparing the weather in August and July, it is evident that both months experience warm temperatures, with a minimum of 23°C (73°F) and an average around 27°C (81°F) in August, slightly cooler than July’s average of 28°C (83°F). However, July boasts higher maximum temperatures, reaching up to 40°C (104°F), compared to August’s peak of 36°C (97°F). In terms of precipitation, August is wetter, with 268 mm (10.5 in) falling over 26 days, while July experiences 218 mm (8.6 in) across 22 days. The humidity in August is higher at 91%, compared to July's 83%, making August feel more oppressive overall. For a detailed look at July weather, you can visit Chiang Mai weather in July.
In August, the weather is characterized by slightly warmer temperatures, with minimums around 23°C (73°F) and maximums reaching up to 36°C (97°F). This month also sees higher precipitation, totaling 268 mm (10.5 in) over 26 days, contributing to a high humidity level of 91%. In contrast, September experiences a marginally cooler climate with minimum temperatures of 22°C (71°F) and a maximum of 35°C (95°F). Precipitation decreases significantly to 198 mm (7.8 in) over 21 days, leading to lower humidity at 83%. For more detailed information, you can check Chiang Mai weather in September.
August and October present contrasting weather conditions. In August, temperatures range from a minimum of 23°C (73°F) to a sweltering maximum of 36°C (97°F), with an average of 27°C (81°F). The month is also marked by significant precipitation, totaling 268 mm (10.5 in) over 26 days, contributing to a high humidity level of 91%. In contrast, October features slightly cooler temperatures, with a minimum of 20°C (69°F) and a maximum of 34°C (94°F), averaging 26°C (80°F). Precipitation decreases to 156 mm (6.1 in) across 18 days, and humidity drops to a more comfortable 67%. For more details on the weather in October, you can visit Chiang Mai weather in October.
August weather in Chiang Mai is characterized by high temperatures, with averages around 27°C (81°F) and maximums reaching up to 36°C (97°F). The month is also notably humid, with humidity levels at a staggering 91%, and it sees significant rainfall of 268 mm (10.5 in) spread over 26 days. In contrast, November brings a much more pleasant climate, where the average temperature drops to 25°C (77°F) with maximums around 34°C (93°F). Rainfall is minimal at just 24 mm (0.9 in) over 5 days, and the humidity decreases to a comfortable 60%. For more details, you can check Chiang Mai weather in November.
August and December present a stark contrast in weather patterns. August boasts a warm climate with average temperatures around 27°C (81°F), peaking at a sweltering 36°C (97°F), along with high humidity at 91% and significant rainfall of 268 mm over 26 days. In sharp comparison, December experiences much cooler temperatures, with an average of 21°C (71°F) and a maximum of 33°C (91°F). The precipitation drops dramatically to just 13 mm, typically falling on only 1 day, and the humidity lowers to a comfortable 56%. For more detailed information about December weather, you can check Chiang Mai weather in December.
August in Chiang Mai presents a distinct contrast to other months with its high humidity and frequent rainfall, creating a lush and vibrant atmosphere. While temperatures soar to a maximum of 36°C, the average remains relatively comfortable, providing a unique blend of heat coupled with the refreshing coolness brought by the nearly daily showers. This month not only sees increased precipitation but also showcases the region's stunning natural beauty, making it an ideal time for nature enthusiasts and adventure seekers. To better understand the patterns and nuances of this unique climate, visit Chiang Mai Climate.