Last updated: April 17, 2025
The climate of Nan, Thailand, is characterized by a distinct Köppen-Geiger classification that includes tropical savanna (Aw) and humid subtropical (Cwa) climates. This region experiences a broad temperature range, with a minimum of 3°C (39°F) recorded in December, reflecting its cool season, while average temperatures hover around a balmy 25°C (78°F). The hottest months, notably April, can see temperatures soaring up to 41°C (107°F), highlighting the region's seasonal extremes. These climatic conditions contribute significantly to Nan's unique ecosystem and influence local agricultural practices.
Nan, Thailand, exhibits a pronounced seasonal temperature pattern throughout the year, transitioning from cooler to hotter months. Starting in January, the region experiences its coldest temperatures, with minimums around 7°C (45°F) and average highs peaking at 36°C (97°F) by the month's end. As February and March unfold, temperatures gradually rise, culminating in April, which marks the height of the warm season with maximums reaching up to 41°C (107°F). The warmth continues into May, although with marginally cooler evenings. From June to August, temperatures stabilize, presenting average highs around 36–38°C (96–100°F), accompanied by the onset of the rainy season that often brings humidity. The transition into the cooler months returns in September through December, where temperatures drop significantly, particularly in December, with a minimum of 3°C (39°F). This fluctuation in temperatures illustrates a clear shift from a hot dry season to a brief, milder wet period.
In December, Song Khwae experiences minimum temperatures of 5°C (41°F) and maximums of 39°C (103°F) in April, while nearby Nan has slightly warmer minimums at 8°C (46°F) in December and peaks of 41°C (107°F) in April. Pua, on the other hand, records the lowest December minimum at 4°C (40°F) and a maximum of 37°C (98°F) in April. For more details, you can check the monthly temperatures in Song Khwae here, in Nan here, and in Pua here.
The precipitation patterns in Nan, Thailand, showcase a striking seasonal variation, with the majority of rainfall concentrated during the monsoon months from May to August. January and February are notably dry, receiving only 28 mm (1.1 in) and 13 mm (0.5 in), respectively, which reflects a more arid start to the year. As the region transitions into April, rainfall begins to increase significantly, culminating in the wettest months of June and July, where monthly totals reach 239 mm (9.4 in) and 323 mm (12.7 in). August is particularly noteworthy, with the highest recorded precipitation of 384 mm (15.1 in), indicating a peak in monsoonal activity.
Following the peak monsoon season, rainfall begins to decline in September through November, with 239 mm (9.4 in) in September and sharply dropping to 25 mm (1.0 in) by November, illustrating a gradual transition back to drier conditions. December experiences minimal rainfall, accumulating just 18 mm (0.7 in). The number of rainy days also reflects this pattern, peaking at an average of 28 days in August and tapering off significantly to just 1 day in February. This precipitation cycle is critical not only for the local ecosystem but also for agricultural productivity in the region.
In Nan, Thailand, humidity levels reveal a distinct seasonal pattern that significantly impacts its climate. Starting from January, the humidity is a comfortable 57%, gradually declining to a low of 39% in April, marking the dry season's peak. As the monsoon approaches in May, humidity begins to rise sharply, skyrocketing to 90% by July, with August peaking at an astonishing 92%. This sweltering atmosphere persists through September before slowly tapering off, dropping to 72% in October. As the year wraps up, humidity levels stabilize around 60% in December, making for a more pleasant end to the year. This cyclical rhythm highlights how rainfall and dry spells shape the region's unique weather experience.
In Nan, Thailand, the sunshine duration exhibits a clear seasonal trend, highlighting a pronounced increase from the winter months into the spring. Starting with 246 hours of sunshine in January, the region witnesses a steady rise in daylight, peaking in March with an impressive 329 hours. This upward trajectory continues into April and May, when the average sunshine remains robust, around 317 to 318 hours. These months provide some of the best opportunities for outdoor activities and agricultural growth due to the abundance of sunlight.
However, as the rainy season approaches in June, there is a noticeable decline in sunshine hours, dipping to 268 hours. July and August see the lowest levels of sunlight, with 256 and 225 hours, respectively, reflecting the impact of monsoonal clouds and precipitation. The trend begins to shift again in September, as sunshine duration gradually recovers, culminating in another peak during the final months of the year, where November and December enjoy an average of 302 and 312 hours. This cyclical pattern in sunshine not only influences local weather and ecology but also significantly impacts agricultural planning and tourism activities throughout the year.
The UV Index in Nan, Thailand, presents a significant seasonal fluctuation, indicating the intensity of ultraviolet radiation throughout the year. Beginning in January, the index starts at 9, categorized as very high, and suggests a burn time of approximately 15 minutes for unprotected skin. As the months progress into February and March, the index escalates to 11 and then peaks at 13, both classified as extreme, emphasizing the increased risk of skin damage without proper sun protection. The trend of extreme UV exposure continues into April and May, coinciding with the hottest months, where the UV Index reaches its maximum of 14.
During the summer months, from June to August, the UV Index remains consistently high, peaking at 15 in July. This sustained intensity not only highlights the need for effective sun protection but also serves as a reminder for residents and visitors to take precautions when engaging in outdoor activities. The intensity of UV radiation starts to taper off as the year progresses, with November experiencing a reduced index of 10 and December dropping to 8, both still within the very high exposure category. Consequently, these variations underline the importance of monitoring UV levels closely, particularly in the extreme months, to mitigate health risks associated with prolonged sun exposure.
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In Nan, Thailand, daylight duration varies throughout the year, following a predictable seasonal pattern. In the early months of January and February, the region enjoys 11 hours of daylight, providing a consistent level of sunlight during the cool season. As March arrives, daylight begins to extend slightly, reaching 12 hours, a trend that continues into April. By May, daylight peaks at 13 hours, coinciding with the warmer season and enhancing outdoor activities and agricultural practices in the region.
As the summer progresses through June and July, the daylight remains stable at 13 hours, offering ample sunlight for both daily life and the burgeoning foliage. However, as the year transitions into the fall months, daylight duration starts to diminish, returning to 12 hours in August and September before dropping back to 11 hours in October and November. Finally, December marks the lowest point with just 10 hours of daylight. This cyclical fluctuation in daylight duration not only influences the local climate but also plays a crucial role in lifestyle and ecological rhythms throughout the year.
Ban Luang, Thailand experiences a tropical climate with distinct seasonal variations. January sees cooler temperatures ranging from 11°C to 35°C, while April and May bring the hottest days, peaking at 41°C. The rainy season arrives in June, with substantial rainfall peaking in August, averaging 327 mm. Despite the rainfall, sunshine hours remain high throughout the year, with March boasting the most at 331 hours. For more detailed information on the climate, visit Ban Luang climate.
Bo Kluea, Thailand, experiences a tropical climate with distinct wet and dry seasons. Temperatures range from a cool 3°C (39°F) in December to a hot 36°C (97°F) in April, while the average year-round temperature hovers around 24°C (75°F). Rainfall is significant, particularly from June to August, with July receiving the highest monthly precipitation at 440 mm (17.3 in). Sunshine varies throughout the year, peaking in March at 326 hours but drops during the rainy months. For more detailed information, visit Bo Kluea climate.
Chaloem Phra Kiat, Thailand experiences a tropical climate characterized by hot temperatures and significant rainfall, particularly from June to August. The months of March through May are the hottest, with maximum temperatures reaching up to 38°C (100°F). Rainfall peaks in July with an average of 295 mm (11.6 in) and diminishes significantly in the drier months of January and February. Sunlight is abundant, particularly in February, with up to 290 hours of sunshine. For more detailed information, visit Chaloem Phra Kiat climate.
Chiang Klang, Thailand experiences a tropical climate with a significant temperature range throughout the year. January sees cooler temperatures, with lows of 9°C (49°F) and an average of 21°C (70°F), while April to July brings the highest heat, peaking at 39°C (103°F) in April. The rainy season spans from May to August, with July recording the highest precipitation at 410 mm (16.2 in). Despite heavy rainfall, the region enjoys ample sunshine, particularly in March and April, each boasting over 300 hours of sunlight. For more detailed climate information, visit Chiang Klang climate.
Mae Charim, Thailand, experiences a tropical climate characterized by warm temperatures and significant rainfall, particularly during the monsoon months. January marks the coolest month with temperatures ranging from 10°C (50°F) to 34°C (94°F), while April and May see the highest averages, peaking at 40°C (104°F). Rainfall is notably heavy from June to August, with July receiving up to 304 mm (12.0 in) of precipitation. The sunshine hours vary throughout the year, with March enjoying the most at 329 hours. For more detailed climate information, visit Mae Charim climate.
Na Muen, Thailand experiences a tropical climate with temperatures ranging from a cool 8°C (47°F) in December to a scorching 40°C (105°F) in April. The region sees the highest rainfall during the monsoon months of June to August, with August receiving up to 315 mm (12.4 in) of precipitation. Despite the heavy rains, sunny days are prevalent, particularly from February to April, where sunshine hours peak at around 328 hours in March. For more detailed information, visit Na Muen climate.
Na Noi, Thailand experiences a tropical climate with distinct temperature variations throughout the year. January sees cooler temperatures, with a minimum of 10°C (51°F) and an average of 23°C (73°F), while April reaches highs of 40°C (105°F). Rainfall is most significant from May to August, peaking at 315 mm (12.4 in) in August, which coincides with lower sunshine hours. In contrast, February and March enjoy the most sunshine, with 294 and 328 hours, respectively. For more detailed information, visit Na Noi climate.
Nan, Thailand experiences a tropical climate with distinct wet and dry seasons. January marks the coolest month, with temperatures ranging from 11°C to 36°C and about 25 mm of rainfall, while April and May see higher averages of 29°C and 30°C, along with significant rainfall, peaking in July with 265 mm. The region enjoys substantial sunshine, particularly in March, which receives 329 hours of sunlight. Overall, the climate is characterized by high humidity and warm temperatures throughout the year, making it essential for visitors to plan accordingly. More details can be found at Nan climate.
Phu Phiang, Thailand, experiences a tropical climate characterized by distinct warm temperatures and varied precipitation throughout the year. The hottest months are April and March, with maximum temperatures reaching up to 41°C (107°F). Rainfall peaks during the monsoon season from June to August, accumulating over 265 mm (10.4 in) in July, while January remains relatively dry. Despite its humidity, the region enjoys substantial sunshine, particularly in February and March, boasting over 290 hours of sunshine monthly. For more detailed information, visit Phu Phiang climate.
The climate in Pua, Thailand, features a tropical pattern with significant temperature variation throughout the year. January sees cooler temperatures, ranging from 8°C to 31°C (47°F to 87°F), while April and May experience the highest heat, with maximums reaching 37°C (98°F). The monsoon season peaks in July and August, with rainfall amounts exceeding 400 mm (15.7 inches) per month. Despite heavy rains during these months, sunshine remains abundant, especially in March with 329 hours. For a more detailed overview, visit Pua climate.
The climate in Santi Suk, Thailand, is characterized by a tropical pattern with distinct temperature variations throughout the year. January starts cool with temperatures ranging from 10°C to 33°C, transitioning to warmer months like April, which sees highs of 39°C. The rainy season peaks from July to September, with rainfall reaching up to 433 mm in August. Despite the precipitation, sunshine remains abundant, particularly from February to April, where hours often exceed 300. For more detailed information, visit Santi Suk climate.
In Song Khwae, Thailand, the climate is characterized by hot temperatures and significant seasonal rainfall. January starts off cooler with temperatures ranging from 9°C to 33°C, while March and April see highs reaching up to 39°C. The rainy season peaks during July and August, with monthly precipitation exceeding 400 mm, contributing to lush surroundings. Despite the heavy rain, the region enjoys ample sunshine, with February and March offering the most hours. For more detailed information, visit Song Khwae climate.
The climate in Tha Wang Pha, Thailand, features a marked variation in temperature throughout the year, with January temperatures ranging from 10°C (50°F) to a maximum of 35°C (95°F) and reaching peak averages of 27°C (81°F) during the warmer months. Rainfall is significantly higher from May to August, with July experiencing the highest precipitation at 414 mm (16.3 in). Sunshine hours are abundant, peaking in March at 329 hours, although this decreases during the rainy season. Overall, the region experiences a tropical climate with distinct wet and dry seasons, making it ideal for diverse agricultural practices. For more details, visit Tha Wang Pha climate.
Thung Chang, Thailand features a tropical climate characterized by hot temperatures and a distinct rainy season. From January to March, temperatures range from a minimum of 8°C (47°F) to a maximum of 38°C (100°F), with ample sunshine, particularly in March with 329 hours. The wet season peaks in July and August, receiving up to 348 mm (13.7 in) of rain, while the winter months experience cooler temperatures and lower precipitation. Overall, Thung Chang's climate offers warmth year-round, appealing to those who enjoy sunny conditions. For more detailed information, visit Thung Chang climate.
Wiang Sa, Thailand experiences a tropical climate characterized by warm temperatures and seasonal rainfall. The hottest months are March and April, with maximum temperatures reaching up to 41°C (106°F), while the coolest month, December, sees lows of 7°C (45°F). Rainfall is heaviest from June to August, with July averaging 251 mm (9.9 in) of precipitation. Despite this, the region enjoys a good amount of sunshine, particularly in February and March, with over 300 hours of sunlight. For more detailed information, visit Wiang Sa climate.
In conclusion, the climatic features of Nan, Thailand—including temperature variability, precipitation patterns, UV Index levels, and daylight duration—collectively shape the region's unique environment and lifestyle. The marked seasonal changes, from the scorching heat of the summer months to the cooler, shorter days of winter, highlight the need for adaptability among residents. The intense UV radiation during peak months underscores the importance of sun safety, while the annual rainfall supports a rich ecosystem and agricultural practices. Understanding these climatic factors not only enhances appreciation for the region's natural beauty but also guides effective planning for activities and health precautions throughout the year.