Last updated: August 27, 2025
In January, Nai Harn, Thailand offers a delightful tropical climate characterized by an average temperature of 27°C (81°F). Visitors can expect maximum highs of 30°C (86°F) and comforting minimums around 25°C (77°F). While the allure of the beach is undeniably strong, January also sees 117 mm (4.6 in) of rainfall spread over 11 days, contributing to a humidity level of 76% that enhances the lush surroundings. Despite the occasional rain, the warmth and vibrant atmosphere make this month an inviting time for tourists and locals alike to explore and unwind in this stunning destination.
In Nai Harn, Thailand, January boasts consistently pleasant temperatures, with a warm minimum of 25°C (77°F), an average of 27°C (81°F), and a comfortable maximum reaching 30°C (86°F). As the month progresses into February, the temperatures remain steady, showing slight increases, particularly in average highs, which rise to 87°F. Throughout the early months of the year, the climate remains stable, characterized by low humidity and gentle breezes, making it an ideal time for beach activities and exploration. The gradual shift towards spring sees minor fluctuations, with March and April maintaining similar ranges, while humidity begins to rise as summer approaches. Overall, January offers a delightful escape into warm, inviting weather, setting the tone for the following months in this picturesque tropical paradise.
In Nai Harn, Thailand, January marks a transitional period in the region's precipitation patterns, with an average rainfall of 117 mm (4.6 in) over 11 days. This modest amount sets the stage for a dramatic shift in weather as the year progresses, particularly in the April to October months, where rainfall substantially increases. Following January, February sees a sharp decline to only 15 mm (0.6 in). However, once April arrives, precipitation surges to 160 mm (6.3 in) and peaks in October with 294 mm (11.6 in), illustrating the shift from a relatively dry start to a rainy season characterized by frequent downpours. Observing this trend highlights the importance of planning for weather fluctuations that define Nai Harn’s climate throughout the year.
In Nai Harn, Thailand, January welcomes visitors with a comfortable humidity level of 76%, setting the stage for vibrant outdoor adventures. As the months progress into February and March, humidity dips slightly to 73% and 74%, respectively, offering a brief respite before the summer heat. However, by the time April rolls around, the humidity begins to stabilize at around 71%-72%, suggesting a steady climate that is characteristic of this tropical paradise. As the region transitions into the rainy season by June, humidity levels rise sharply to 79%, where they remain consistent through July. The wet season intensifies in August and September, peaking at 84%, before showing little fluctuation into the later months of the year. Overall, while January provides a serene beginning to the year, the increasing humidity trends towards mid-year create a lush, inviting atmosphere that defines Nai Harn's tropical allure.
In Nai Harn, Thailand, January kicks off the year with a UV Index of 12, categorized as extreme, which means diligent sun protection is essential. With a burn time of just 10 minutes, the sun's intensity sets the stage for the months to come, where the UV Index peaks at 15 in March and April. Following this, it slightly dips but remains in the extreme category throughout the summer, with values ranging from 13 to 14 in the subsequent months. Overall, the pattern reveals a consistent challenge for sun safety, underscoring the importance of vigilance against UV radiation year-round. For more detailed insights, check out the Nai Harn UV Index.
UV Risk Categories
January in Nai Harn, Thailand, welcomes visitors with 260 hours of radiant sunshine, marking the beginning of a trend towards brighter days. As the months unfold, the sun steadily shines brighter, peaking in March with an impressive 345 hours, perfect for beachgoers and outdoor enthusiasts. Although April and May see a slight decrease in sunlight, each month remains beautifully illuminated with 320 and 315 hours, respectively. From June to August, the area continues to bask in abundant sunlight, hovering around the 305 to 323 hours range, before gradually tapering off as the year closes with 287 hours in November. This consistent availability of sunshine makes Nai Harn a delightful escape, promising plenty of opportunities for relaxation and adventure throughout the year.
In Nai Harn, Thailand, January offers a 26% chance of sunny weather, making it a pleasant start to the year, although not the sunniest month on the calendar. This moderate likelihood sets the stage for a gradual increase in sunshine as the months progress, with February boasting a significant 47% chance of clear skies. Following that, March maintains a healthy 42%, before a notable drop occurs in April at 21%. As the peak of the rainy season approaches in mid-year, chances of sunny days dwindle, falling to the lowest point in August and September, both at just 12% and 9% respectively. Ultimately, while January provides a respectable opportunity to bask in the sun, travelers eager for brighter days may find February and March to be even more rewarding.
In Nai Harn, Thailand, January welcomes an abundance of sunshine with approximately 11 hours of daylight. As the year progresses into the warmth of February, the daylight remains consistent at 11 hours, before gradually increasing to 12 hours in the months from March through August. This generous stretch of daylight means extended opportunities for outdoor adventures and soaking up the sun. As the calendar shifts toward autumn, the daylight once again dips to 11 hours in October, holding steady through November and December. This cyclical pattern not only highlights the region's tropical climate but also offers a perfect backdrop for both relaxation and exploration throughout the year.
In Nai Harn, Thailand, January ushers in the year with an invigorating average wind speed of 6.3 m/s (14 mph), making it one of the breeziest months of the year. As the season transitions into February, the winds begin to soften slightly, dropping to 5.5 m/s (12 mph) and continuing this gradual decline through the warmer months. By March and April, the winds have calmed to around 4.1 m/s (9 mph) and 4.0 m/s (9 mph), reaching their nadir in May at 3.9 m/s (9 mph). This trend of lighter winds persists until June, when a subtle resurgence begins, climbing steadily through mid-year with July and August averaging around 5.3 m/s (12 mph) and 5.0 m/s (11 mph), respectively. Ultimately, as the year fades into autumn, there's a slight uptick in wind activity again in December, capping off the year with an average of 5.4 m/s (12 mph). This cyclical pattern of wind elements not only enhances Nai Harn's vibrant coastal charm but also creates an inviting playground for water sports enthusiasts throughout the year.
Weather in Nai Harn varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Nai Harn, focusing on differences in temperature, rainfall, humidity, and UV levels.
The weather in January and February displays some similarities and notable differences. January features a minimum temperature of 25°C (77°F), with average temperatures hovering around 27°C (81°F) and reaching a maximum of 30°C (86°F). However, it sees a higher level of precipitation at 117 mm (4.6 in) over 11 days, contributing to a higher humidity level of 76%. In contrast, February maintains the same minimum and average temperatures but experiences slightly warmer maximum temperatures, reaching 30°C (87°F). Significantly, February has much lower precipitation, totaling just 15 mm (0.6 in) over 4 days, resulting in a reduced humidity of 73%. For detailed insights into February's weather conditions, you can check Nai Harn weather in February.
In comparison, January and March exhibit similarities in temperature, with January experiencing a minimum of 25°C (77°F) and an average of 27°C (81°F), while March has slightly warmer conditions with a minimum of 26°C (78°F) and an average of 28°C (83°F). Both months peak at a maximum of 30°C (86°F in January and 87°F in March). However, January is notably wetter, with 117 mm (4.6 in) of precipitation over 11 days, compared to March's 41 mm (1.6 in) over just 9 days. Additionally, humidity remains relatively high in both months, but slightly lower in March at 74% compared to January's 76%. For more details on March weather, you can check Nai Harn weather in March.
In January, the weather features warm temperatures with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at a maximum of 30°C (86°F). However, it experiences significant precipitation, with 117 mm (4.6 in) falling over 11 days and humidity levels averaging 76%.
In contrast, April presents slightly warmer conditions, maintaining a minimum of 25°C (78°F) and an average of 28°C (83°F), while still reaching a maximum of 30°C (87°F). Precipitation is higher during this month, totaling 160 mm (6.3 in) across 22 days, but the overall humidity decreases to 71%. For more detailed information on April weather, you can check Nai Harn weather in April.
In January, the weather in Nai Harn features a warm average temperature of 27°C (81°F), with daily highs reaching up to 30°C (86°F) and a minimum of 25°C (77°F). The month sees a total precipitation of 117 mm (4.6 in) over 11 days, accompanied by a humidity level of 76%. In contrast, May experiences slightly warmer temperatures, with averages around 28°C (83°F) and similar maximums of 30°C (86°F). However, it also brings significantly increased rainfall, totaling 225 mm (8.9 in) over 26 days, although humidity dips to 72%. For more details on the weather in May, you can visit Nai Harn weather in May.
In January, the weather is quite warm, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F) and an average of 27°C (81°F). However, it experiences significant rainfall, with about 117 mm (4.6 in) spread over 11 days and humidity averaging 76%. In contrast, June sees slightly higher temperatures, with a minimum of 25°C (78°F), an average of 28°C (83°F), and a maximum of 30°C (87°F). The month is notably wetter, with precipitation reaching 202 mm (8.0 in) across 23 days and humidity increasing to 79%. For more detailed information on the weather, you can check Nai Harn weather in June.
In January, temperatures in Nai Harn typically range from a minimum of 25°C (77°F) to a maximum of 30°C (86°F), with an average temperature of around 27°C (81°F). The month experiences relatively less rainfall, accumulating about 117 mm (4.6 in) over 11 days, with humidity at 76%. In contrast, July sees slightly warmer temperatures, with a minimum of 26°C (79°F) and a maximum of 29°C (85°F), averaging 28°C (83°F). However, it is also wetter in July, with precipitation reaching 169 mm (6.7 in) over 17 days, and humidity rising to 79%. For more details on July weather, check this Nai Harn weather in July.
In January, the weather typically features warm temperatures with a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 30°C (86°F). Precipitation is moderate at 117 mm (4.6 in) over 11 days, accompanied by a humidity level of 76%. In contrast, August sees slightly increased warmth, with averages hitting 28°C (82°F) while maintaining the same maximum of 30°C (86°F). However, this month experiences higher rainfall, totaling 174 mm (6.8 in) over 20 days and a rise in humidity to 82%. For more detailed information, check out the Nai Harn weather in August.
In comparing the weather between January and September, both months experience warm temperatures, with January having a minimum temperature of 25°C (77°F), an average of 27°C (81°F), and a maximum of 30°C (86°F). In contrast, September's temperatures are slightly higher, featuring a minimum of 25°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). However, September is notably wetter, receiving 251 mm (9.9 in) of precipitation over 24 days compared to January’s 117 mm (4.6 in) over just 11 days. Additionally, September's humidity levels climb to 84%, which is higher than January's 76%. For more detailed insights on the weather during this month, you can check Nai Harn weather in September.
In comparing January and October weather, we find that both months maintain similar average temperatures, ranging from a minimum of 25°C (77°F) to an average of 27°C (81°F). However, October experiences a slightly lower maximum temperature of 29°C (85°F) compared to January's peak of 30°C (86°F). A notable difference lies in the precipitation levels, as October sees significantly higher rainfall at 294 mm (11.6 in) across 26 days, compared to January's 117 mm (4.6 in) over 11 days. Additionally, humidity levels rise from 76% in January to 83% in October, indicating a more humid environment in the latter month. For more details on the October weather, you can visit Nai Harn weather in October.
In January, the weather is generally warm and pleasant, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F) and an average of 27°C (81°F). The month experiences moderately low precipitation at 117 mm (4.6 in) over 11 days, with humidity levels around 76%. In contrast, November sees similar temperatures, but with significantly higher rainfall, totaling 279 mm (11.0 in) across 25 days, and increased humidity at 84%. The extended precipitation in November can lead to a more tropical feel, making it a more humid experience compared to January. For more details, you can check out Nai Harn weather in November.
In comparison to December, January features similar temperature ranges, with both months showing minimums of 25°C (77°F), averages of 27°C (81°F), and maximums around 30°C (86°F in January and 87°F in December). However, January experiences slightly less precipitation at 117 mm (4.6 in) over 11 days, compared to December's 174 mm (6.9 in) over 14 days. Additionally, humidity is lower in January at 76%, whereas December maintains a higher humidity level at 84%. For more detailed insights, you can check out Nai Harn weather in December.
In January, Nai Harn experiences a pleasant departure from the heavier rains of previous months, with slightly cooler temperatures and reduced precipitation. The average temperature hovers around a comfortable 27°C (81°F), inviting outdoor adventures amidst the stunning scenery. While humidity remains high, the overall weather is more manageable, making it an ideal time for beachgoers and explorers alike. With about 11 days of rainfall this month, visitors can still expect plenty of sunshine, creating perfect conditions for relaxation and enjoyment. For a deeper look into seasonal trends, explore the detailed insights available at Nai Harn Climate.