Last updated: August 27, 2025
In January, Rayong, Thailand experiences warm and inviting weather ideal for travelers and locals alike. With daily maximum temperatures reaching up to 34°C (93°F) and an average of 27°C (81°F), the days are filled with sunshine and warmth. However, evenings bring a refreshing respite, as minimum temperatures can drop to 17°C (63°F). While the month receives a modest precipitation total of 35 mm (1.4 in) across approximately 7 days, humidity levels hover around 59%, adding a touch of tropical humidity to the air. Overall, January offers an appealing climate for outdoor adventures and beach relaxation.
In January, Rayong, Thailand, welcomes visitors with a pleasant climate, featuring minimum temperatures around 17°C (63°F) and a comfortable average of 27°C (81°F). The month peaks at a warm 34°C (93°F), making it an ideal time for outdoor activities and beach excursions. As the year progresses into February, temperatures rise slightly, with a minimum of 19°C (66°F), but the average remains steady at 27°C (81°F). This trend continues into the following months, with March and April showcasing a gradual warmth, especially as April reaches a max of 35°C (95°F). By the time we enter the mid-year months, such as June and July, lows hover around 25°C (77°F), while averages maintain a consistent 28-29°C (83-84°F) range, illustrating a stable tropical climate. As the year shifts towards its end, temperatures begin to cool slightly in November and December, yet still offer a delightful experience with averages around 27°C (82°F). Overall, January sets the stage for a warm, inviting year in Rayong, marked by only a slight fluctuation in temps, perfect for enjoying the region's beauty.
In January, Rayong, Thailand experiences relatively modest precipitation, with just 35 mm (1.4 in) of rain falling over the course of approximately 7 days. This marks a transition from the drier months leading into a gradual increase in rainfall as the year progresses. By February, rainfall slightly decreases to 30 mm (1.2 in), but as March approaches, the wet season begins to take hold, with precipitation skyrocketing to 78 mm (3.1 in) and 15 days of rain. This upward trend continues exponentially into the following months, peaking in September with a significant 322 mm (12.7 in) over 26 days. Comparatively, January sets the stage for the deluge that characterizes the months ahead, emphasizing the shifting patterns of rainfall in this tropical region.
In January, Rayong, Thailand experiences a comfortable humidity level of 59%, setting the stage for the dry season. This moderate humidity is slightly lower than February's 58%, after which the levels begin to rise gradually. By March, humidity increases to 61%, marking the onset of a gradual upward trend that continues into the hotter months. As April approaches, the humidity jumps to 70%, and by May, it significantly escalates to 80%, signaling the transition towards the rainy season. The peak occurs during the summer months, reaching a staggering 88% in August before finally declining to a more manageable 78% in November and 70% again in December. This pattern illustrates the region's shift from a comfortable start of the year to the sultry, humid conditions typical of late summer.
In January, Rayong experiences a UV Index of 10, categorized as very high, which means that even brief sun exposure can lead to skin damage in just 15 minutes. As the month progresses into February and beyond, the UV Index soars to extreme levels, reaching a peak of 14 from March through September, where the burn time dramatically shortens to just 10 minutes. This trend highlights the intensifying sun exposure as the region transitions towards the hotter months, making sun protection increasingly crucial. Although the UV Index dips slightly again in October to 13 and then back to 10 in December, the overall pattern reflects an urgent need for caution when enjoying the outdoors. For those planning their activities in this sun-drenched coastal paradise, it’s essential to stay informed about the Rayong UV Index for a safe sun-soaking experience.
UV Risk Categories
January in Rayong, Thailand, shines brightly with an impressive 251 hours of sunlight, setting the stage for a year characterized by abundant rays. As the months progress, February brings an increase to 297 hours, followed by March when the sunshine peaks at a vibrant 334 hours, painting the landscape in golden hues. Even as April and May showcase substantial sunlight with 312 and 303 hours respectively, the trend gently tapers off into the summer months, with June and July seeing a decrease to 286 and 268 hours. While August offers a slight rebound, the sunlight begins to decline again in the fall. By the end of the year, November and December offer 295 and 312 hours of sunshine, reminding us that Rayong's charm remains radiant throughout the year, with January serving as the perfect kickoff to the tropical sunshine experience.
In Rayong, Thailand, January boasts a 54% chance of sunny weather, making it one of the more favorable months for sunshine compared to the rest of the year. As we transition into February, that likelihood increases to 66%, indicating a promising continuation of clear skies. However, as the months progress toward the sweltering heat of April, the probability of sunny days drops significantly to just 17%. This trend highlights that while January is a relatively bright month, it’s essential to enjoy the sunshine while it lasts, as the rainy season looms just around the corner, bringing increasingly overcast conditions in the following months. With December also showing a respectable 55% chance of sun, it’s clear that both the start and end of the year offer the most sun-soaked opportunities in Rayong.
In January, Rayong, Thailand enjoys a pleasant 11 hours of daylight, a pattern that remains consistent through February. As spring approaches in March, daylight begins to stretch to 12 hours, a trend that continues uninterrupted through the summer months of April to September. This consistent daylight offers ample time for outdoor activities and exploration. As the year nears its end, daylight shrinks back to 11 hours in October, settling into a more subdued rhythm that persists through November and December. This seasonal cycle highlights Rayong's shift from longer summer days to the tranquil, shorter daylight hours of the cooler months.
In January, Rayong, Thailand, enjoys a gentle average wind speed of 2.8 m/s (6 mph), creating a pleasant atmosphere to kick off the year. This relatively calm wind lays the foundation for a slight decrease in the following months, with February and March experiencing even lighter breezes at 2.3 m/s (5 mph) and 2.4 m/s (5 mph), respectively. As the warm season approaches, the winds begin to pick up again, reaching a notable 3.2 m/s (7 mph) during the summer months of June and July. Interestingly, the trend swings back towards a calmer feel in August with 2.9 m/s (6 mph), before gradually picking up once more in the cooler months of November and December. This pattern of variable winds not only enhances Rayong's tropical charm but also captures the region's dynamic climate throughout the year.
Weather in Rayong varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Rayong, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, we can see some subtle differences. January experiences a minimum temperature of 17°C (63°F), whereas February starts slightly warmer at 19°C (66°F). Both months maintain an average temperature of 27°C (81°F) and reach a maximum of 34°C (93°F). Precipitation levels are similar, with January receiving 35 mm (1.4 in) and February slightly less at 30 mm (1.2 in), both spanning around 7 rainy days. Humidity remains fairly consistent, with January at 59% and February at 58%. For more detailed insights about February weather, you can visit Rayong weather in February.
In January, the weather is characterized by a warm climate with minimum temperatures around 17°C (63°F) and an average of 27°C (81°F), reaching a maximum of 34°C (93°F). With 35 mm of precipitation over approximately 7 days, January experiences moderate rainfall and average humidity of 59%.
Contrastingly, March sees a slight increase in temperature, with minimums of 23°C (73°F) and averages sitting at 28°C (83°F), while still peaking at 34°C (93°F). However, it is notably wetter, receiving 78 mm of rain over 15 days and a marginally higher humidity level of 61%. For a more detailed view of what to expect during this month, check Rayong weather in March.
In January, the weather is characterized by a minimum temperature of 17°C (63°F) and an average temperature of 27°C (81°F), reaching a maximum of 34°C (93°F). The month experiences relatively low precipitation, totaling 35 mm (1.4 in) over about 7 days, with a humidity level of 59%. In contrast, April sees warmer temperatures overall, with minimums of 19°C (66°F) and an average of 29°C (84°F), peaking at 35°C (95°F). However, it is also much wetter, with rainfall accumulating to 158 mm (6.2 in) across approximately 20 days, and humidity rising to 70%. For a more detailed look at April’s weather patterns, you can check Rayong weather in April.
January and May showcase distinct differences in weather patterns. In January, temperatures range from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), with an average of 27°C (81°F). The month experiences moderate precipitation, totaling 35 mm (1.4 in) over about 7 days, and humidity levels are at a comfortable 59%. In contrast, May is significantly warmer, with minimum temperatures rising to 22°C (71°F) and maximums reaching 35°C (95°F), averaging at 29°C (84°F). However, May is much wetter, with a substantial 239 mm (9.4 in) of rainfall occurring over 24 days, accompanied by higher humidity at 80%. For more detailed insights, you can check out Rayong weather in May.
In January, the weather features warm temperatures with a minimum of 17°C (63°F), an average of 27°C (81°F), and a maximum of 34°C (93°F). The month experiences relatively light precipitation, with about 35 mm (1.4 in) over 7 days and a humidity level of 59%. In contrast, June sees warmer minimum temperatures at 25°C (77°F) and maintains a similar maximum of 34°C (93°F). However, it experiences significantly heavier rainfall, totaling 211 mm (8.3 in) spread over 24 days, along with increased humidity reaching 85%. This contrast highlights June as a wetter and more humid month compared to the drier January. For more details, check Rayong weather in June.
In January, the weather in Rayong features a milder climate with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F) and an average of 27°C (81°F). Precipitation is relatively low, totaling 35 mm (1.4 in) over about 7 days, with humidity around 59%. Conversely, July experiences warmer temperatures, starting at a minimum of 25°C (77°F) and reaching the same maximum of 34°C (94°F), while the average temperature slightly increases to 28°C (83°F). July is considerably wetter, with a significant 226 mm (8.9 in) of rain spread over 26 days and higher humidity levels at 86%. For more details on the weather during this month, check out Rayong weather in July.
In comparing the weather between January and August, January features a comfortable temperature range with a minimum of 17°C (63°F) and an average of 27°C (81°F), while August experiences warmer nights with minimum temperatures starting at 24°C (76°F). Although both months have a maximum temperature of 34°C (93°F), August sees significantly higher precipitation at 223 mm (8.8 in) over 26 days compared to January's 35 mm (1.4 in) spread over just 7 days. Additionally, August has a notably higher humidity level at 88%, compared to January's 59%, making the latter month feel more comfortable overall. For more detailed insights, you can check Rayong weather in August.
January and September in Rayong showcase stark differences in weather patterns. January experiences milder temperatures, ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), along with relatively low precipitation of 35 mm (1.4 in) over just 7 days, and a humidity level of 59%. In contrast, September sees a higher minimum temperature of 24°C (75°F) and an average temperature of 28°C (82°F), but it is marked by significantly increased rainfall, totaling 322 mm (12.7 in) over 26 days, and higher humidity at 87%. For more detailed insights on September's climate, you can visit Rayong weather in September.
When comparing the weather in January and October, notable differences emerge. January typically enjoys a warmer climate with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F), accompanied by relatively low precipitation of 35 mm (1.4 in) over just 7 days, and a humidity level of 59%. In contrast, October experiences a warmer minimum temperature of 23°C (73°F) and maintains a similar maximum of 34°C (93°F), but is characterized by a significant increase in rainfall, with 293 mm (11.5 in) spread across 24 days and a higher humidity of 83%. For more detailed insights, you can check out Rayong weather in October.
In January, the weather in Rayong features a warm climate with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 34°C (93°F). The average temperature for the month is around 27°C (81°F), accompanied by relatively low precipitation of 35 mm over 7 days and humidity at 59%. In contrast, November sees slightly higher minimum temperatures at 22°C (72°F) and an average of 27°C (82°F). However, it experiences increased rainfall, totaling 71 mm across 11 days, and higher humidity levels at 78%. For more details on conditions during this month, check out Rayong weather in November.
In comparing the weather of January and December, we find that both months exhibit very similar temperature ranges, with January's average temperature at 27°C (81°F) and December's at 27°C (80°F). The minimum temperatures remain constant at around 17°C (62°F) to 17°C (63°F), while the maximums are nearly identical, reaching 34°C (93°F) in January and 34°C (94°F) in December. However, December experiences slightly higher humidity levels at 70% compared to January's 59%. In terms of precipitation, January records 35 mm (1.4 in) over 7 days, while December sees a marginally higher 36 mm (1.4 in) over just 5 days, indicating a wetter month overall. For a more detailed look at December weather, you can check Rayong weather in December.
As January rolls in, Rayong experiences a delightful transition from the humidity of the previous months, with cooler temperatures and a moderate amount of rainfall. This month is characterized by comfortable averages, making it an ideal time for outdoor adventures. Unlike the heavier rains typically found in the peak monsoon season, January sees significantly less precipitation, allowing for more sunshine and less humidity overall. For those planning a visit, January's pleasant weather offers a perfect backdrop to explore the city and its stunning coastline. For a deeper dive into the local climate patterns, check out Rayong Climate.