Last updated: August 27, 2025
Experience the enchanting charm of Nai Harn, Thailand in December, where the tropical climate offers a pleasant escape. With maximum temperatures reaching 30°C (87°F) and an average of 27°C (81°F), visitors can enjoy warm days ideal for exploration. Although the month sees about 174 mm (6.9 in) of rain over approximately 14 days, the high humidity levels at 84% contribute to the lush, vibrant landscapes that make this coastal paradise so alluring. Whether indulging in relaxation or adventure, December in Nai Harn promises a delightful tropical experience amidst sporadic showers.
In Nai Harn, Thailand, December ushers in a delightful coastal climate that sets the stage for the peak tourist season. With minimum temperatures hovering around 25°C (77°F) and averages of 27°C (81°F), the weather remains comfortably warm for both relaxation and exploration. Skirting close to a maximum of 30°C (87°F), the days are ideal for sun-soaked adventures on the beach or vibrant local markets. As the year closes, December's mild temperatures mirror the patterns seen throughout the preceding months, creating a pleasant consistency that invites visitors to bask in the tropical charm of this enchanting destination. With such inviting weather, it’s no wonder Nai Harn has become a favorite haven for those seeking a winter getaway in sunny Thailand.
In Nai Harn, Thailand, December typically ushers in a transition as the rainy season gradually recedes. With an average precipitation of 174 mm (6.9 in), December experiences fewer rainy days—about 14 in total—compared to the peak months preceding it. This marked reduction in rainfall reflects a broader trend as the region shifts away from the heaviest downpours observed in October and November, both of which surpass 279 mm. The decrease provides a welcome reprieve and hints at the drier months ahead, making December a time for locals and visitors alike to enjoy more sunshine while still appreciating the lush landscape nurtured by the earlier rains.
As December rolls into Nai Harn, Thailand, the humidity peaks at a notable 84%, aligning with the high levels experienced in the preceding months. This trend indicates a distinct pattern of rising humidity that begins in June and persists through the end of the year, with the most humid months spanning from September to December. While the humidity dips slightly during the hot season, it quickly rebounds, underscoring the tropical climate's hallmark of consistently high moisture. Visitors in December can expect a lush, humid atmosphere as the region prepares for the cooler season, creating a vibrant and dynamic environment that enhances the natural beauty of this coastal paradise.
In December, Nai Harn, Thailand, experiences a UV Index of 11, maintaining its classification in the extreme exposure category, with a burn time of just 10 minutes. This trend highlights a slightly decreasing index compared to the peak months of March and April, which recorded an impressive 15. Despite this slight dip, the UV levels remain notably high throughout the month, reflecting the region's overall pattern of extreme sun exposure year-round. With winter travelers and sun-seekers flocking to this picturesque destination, it remains essential for visitors to take precautions against sunburn. For more details on UV levels throughout the year, check out the Nai Harn UV Index.
UV Risk Categories
In Nai Harn, Thailand, December brings a delightful 311 hours of sunshine, continuing a pattern of abundant light as the year draws to a close. This month is a part of a vibrant seasonal tapestry, where sunshine peaks notably in March with 345 hours, setting a high bar for brightness. As we transition from April to June, the sunny hours remain consistently generous, hovering around the 300-hour mark. Notably, January and November mark the lower end of the year's sunshine spectrum, with 260 and 287 hours, respectively. However, December’s glow signals a return to arcane warmth and light, making it an inviting time for beachgoers and sun-seekers alike. The overall trend showcases Nai Harn's status as a winter sun refuge, inviting visitors to bask in its tropical allure even as the rest of the world braces for winter.
In Nai Harn, Thailand, December offers a promising 38% chance of sunny weather, making it a delightful time for sun-seekers compared to the preceding months. As the year draws to a close, this uptick from November's dismal 3% marks a refreshing change, hinting at more favorable conditions for outdoor activities. While January's sun chances climb to 26%, December stands out as a prime opportunity to soak up the sun before the year ends, contrasting sharply with the rainy peaks of the summer months, where the likelihood of clear skies drops to a mere 12% in August. With December positioned as a festive gateway to brighter days ahead, visitors can hope for a pleasantly sunny escape in this beautiful tropical paradise.
In Nai Harn, Thailand, the daylight duration showcases a subtle yet fascinating rhythm throughout the year. From January to February, residents and visitors bask in 11 hours of sunlight daily, setting a gentle tone for the start of the year. As spring approaches, March to May ushers in a transition to 12 hours of daylight, inviting longer, sun-kissed days perfect for beach activities and exploration. This extended daylight continues uninterrupted through the summer months from June to September, creating a season filled with vibrant energy and outdoor adventures. However, as October rolls in, daylight begins to wane again, returning to 11 hours in November and continuing this pattern into December. This consistent fluctuation in daylight not only highlights Nai Harn’s tropical climate but also enhances its allure as a year-round destination.
As the calendar turns to December, Nai Harn, Thailand, welcomes a revitalizing shift in its breezy atmosphere. With an average wind speed of 5.4 m/s (12 mph), the month stands out as a delightful transition from the lighter winds experienced in preceding months. This increase in gustiness is reminiscent of the tropical charm that thrives in the region, contrasting sharply with the calm of earlier months, such as April and May, where winds dwindled to around 4.0 m/s. December’s breezes invigorate the coastline, offering a refreshing backdrop for beachgoers and water enthusiasts alike, while also signaling the approach of the peak tourist season. The consistent yet gentle winds not only enhance the scenic beauty but also create an inviting atmosphere for those seeking both adventure and relaxation.
Weather in Nai Harn varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Nai Harn, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures remain steady with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 30°C (87°F). However, the month experiences significant rainfall, totaling 174 mm (6.9 in) over 14 days, accompanied by high humidity levels at 84%. In contrast, January sees slightly lower rainfall at 117 mm (4.6 in), spread over 11 days, while maintaining the same temperature ranges and experiencing a drop in humidity to 76%. This suggests that while both months share similar temperatures, January offers a drier and less humid climate. For more details, you can check Nai Harn weather in January.
December and February present quite different weather conditions, despite having similar temperature averages. In December, temperatures range from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), accompanied by heavy precipitation totaling 174 mm (6.9 in) over 14 days, which contributes to a high humidity level of 84%. In contrast, February maintains the same temperature range but experiences a significant reduction in rainfall, with only 15 mm (0.6 in) falling over just 4 days, and humidity drops to 73%. This makes February a drier and more comfortable month compared to the wetter and more humid conditions of December. For a detailed overview of February weather, check this link: Nai Harn weather in February.
December and March present a similar temperature range, with both months featuring minimal temperatures around 25-26°C (77-78°F), averages of 27-28°C (81-83°F), and maximums peaking at 30°C (87°F). However, December is noticeably wetter, receiving 174 mm (6.9 in) of precipitation over 14 days, compared to March's significantly drier conditions with only 41 mm (1.6 in) over 9 days. Additionally, the humidity is higher in December at 84%, while March sees a more comfortable 74%. For those considering travel during March, you can find detailed information about the weather Nai Harn weather in March.
In December, temperatures range from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), with an average around 27°C (81°F). The month experiences significant rainfall, totaling 174 mm (6.9 in) over 14 days, which contributes to a high humidity level of 84%. In contrast, April maintains similar temperature levels, with a minimum of 25°C (78°F) and an average of 28°C (83°F), but experiences slightly less rainfall at 160 mm (6.3 in) over 22 days. This results in a noticeably lower humidity of 71%. For more detailed information, you can check Nai Harn weather in April.
In December, temperatures typically range from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), with an average of 27°C (81°F). The month sees considerable rainfall, with 174 mm (6.9 in) spread over approximately 14 days, contributing to a high humidity level of 84%.
In contrast, May experiences slightly higher temperatures, with minimums around 26°C (78°F) and averages of 28°C (83°F), while the maximum stays similar at 30°C (86°F). However, May is notably wetter, receiving 225 mm (8.9 in) of rainfall over 26 days, and the humidity is lower at 72%. For a more detailed look at the specific weather in Nai Harn during May, you can visit Nai Harn weather in May.
In December, temperatures in Nai Harn are comfortably warm, with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at 30°C (87°F). However, it is also quite rainy, with 174 mm (6.9 in) of precipitation over 14 days and humidity levels at 84%. In contrast, June experiences slightly higher temperatures, with a minimum of 25°C (78°F) and an average of 28°C (83°F), while also maintaining a maximum of 30°C (87°F). Rainfall is more pronounced in June, with 202 mm (8.0 in) spread across 23 days, and humidity levels are a bit lower at 79%. For more detailed weather information, you can visit Nai Harn weather in June.
When comparing the weather in December and July, both months exhibit warm temperatures, but December tends to be slightly cooler overall. December's temperatures range from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), with an average of 27°C (81°F). In contrast, July features slightly higher temperatures, with a minimum of 26°C (79°F) and a maximum of 29°C (85°F), averaging around 28°C (83°F). Both months experience considerable precipitation, with December receiving 174 mm (6.9 in) over 14 days and July seeing 169 mm (6.7 in) across 17 days. Humidity levels are also noteworthy, with December maintaining a higher humidity of 84% compared to July's 79%. For more detailed information on July weather, you can visit Nai Harn weather in July.
December and August both exhibit warm temperatures, with minimal differences in their averages. December has a slightly lower average temperature of 27°C (81°F) compared to August's 28°C (82°F). Both months see a minimum of 25°C (77°F) and a maximum of around 30°C (86-87°F). Precipitation levels are similar, with December recording 174 mm (6.9 in) over 14 days, while August also sees 174 mm (6.8 in) spread over more rainy days, totaling 20. Humidity remains high in both months, with December at 84% and August at 82%. For more detailed information, you can visit Nai Harn weather in August.
In December, the weather is slightly cooler than in September, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (87°F), compared to September's temperatures that range from 25°C (78°F) to 29°C (85°F). While both months experience high humidity at 84%, December sees significantly less rainfall, with precipitation totaling 174 mm (6.9 in) over 14 days, whereas September has a much wetter climate with 251 mm (9.9 in) over 24 days. For a detailed look at September's weather, you can visit Nai Harn weather in September.
When comparing the weather in December and October, both months exhibit similar average temperatures, hovering around 27°C (81°F). However, December is slightly warmer on average, with a maximum temperature of 30°C (87°F) compared to October's 29°C (85°F). In contrast, October tends to be much wetter, receiving 294 mm (11.6 in) of precipitation over 26 days, while December experiences only 174 mm (6.9 in) across 14 days. Humidity levels are quite comparable, with October at 83% and December at 84%. For a more detailed look at October's weather patterns, you can visit Nai Harn weather in October.
In comparing the weather of December and November, both months share similar temperature ranges, with minimums around 25°C (77°F) and maximums reaching up to 30°C (87°F). However, December experiences significantly less rainfall, totaling 174 mm (6.9 in) over just 14 days, while November has a much higher precipitation of 279 mm (11.0 in) spread across 25 days. Despite the differences in rainfall, humidity levels remain consistent at 84% for both months. For a closer look at November's weather patterns, you can check out Nai Harn weather in November.
As December arrives in Nai Harn, the weather offers a delightful shift, boasting slightly cooler temperatures and a pleasant humidity level that invites outdoor adventures. While the month sees a higher amount of rainfall compared to the preceding dry months, the showers add to the lush scenery rather than detract from the experience. With comfortable daily highs averaging around 27°C and a refreshing atmosphere, December provides a perfect backdrop for beach outings and exploration. This time of year not only brings a respite from the heat but also attracts visitors eager to enjoy the charming landscape. For a comprehensive look at what to expect throughout the year, check out the Nai Harn Climate.