Last updated: August 27, 2025
As September unfolds in Chanthaburi, Thailand, the city experiences a tropical climate characterized by warm temperatures and significant rainfall. Daily highs reach up to 32°C (90°F), while the average temperature hovers around a comfortable 28°C (82°F), with lows rarely dropping below 25°C (77°F). This month witnesses heavy precipitation, with approximately 379 mm (14.9 in) falling over 29 days, resulting in a lush, green landscape. The humidity is notably high at 87%, contributing to the tropical feel of the region. Visitors should prepare for frequent rain showers and embrace the vibrant, dynamic atmosphere that September brings to Chanthaburi.
In September, Chanthaburi, Thailand, experiences a warm and humid climate, typical of the rainy season. With minimum temperatures hovering around 25°C (77°F) and averages steady at 28°C (82°F), the days remain pleasantly warm for outdoor adventures. The maximum temperature can reach up to 32°C (90°F), providing ample opportunities to soak in the tropical sun. While the warmth is consistent, September stands out for its combination of high humidity and frequent showers, which can bring a refreshing relief from the heat. The gradual shift in temperatures from the preceding months indicates a slight cooling trend as the region moves towards October, making this time ideal for those looking to experience Chanthaburi's lush landscapes in a vibrant yet cozy atmosphere.
September marks a peak in precipitation for Chanthaburi, Thailand, with an impressive 379 mm (14.9 in) of rain over 29 days. This month typically witnesses a gradual intensification of rainfall, following the trends established in recent months of the rainy season. After a steady increase from 272 mm (10.7 in) in May to 367 mm (14.4 in) in August, September's rainfall signifies both the zenith of tropical downpours and the culmination of the monsoon’s influence in the region. The consistent pattern of rainfall days throughout the preceding months continues, as cloudbursts contribute to a lush landscape, making it clear that September is a defining month in Chanthaburi’s climatic calendar. As the rain begins to taper off in October, the vibrant greenery nurtured by September's showers creates a stunning backdrop for the transition into the drier months ahead.
In September, Chanthaburi, Thailand experiences a significant dip in humidity compared to the preceding months, with levels at 87%. This slight decrease follows a peak in August at 88%, marking it as one of the most humid months of the year. As we transition into October and November, humidity continues to decline, dropping to 83% and 78%, respectively. This pattern highlights a trend of high humidity during the wet season, particularly from June through August, where levels soar above 85%. As the region approaches the end of the year, humidity levels gradually lessen, reflecting a shift towards a more comfortable climate as the dry season approaches.
In September, Chanthaburi, Thailand, continues to experience extreme UV exposure with a consistent UV Index of 14, mirroring the high levels seen throughout the preceding months. This trend of elevated UV levels, accompanied by a burn time of just 10 minutes, highlights the importance of sun protection during this period. Remarkably, the UV Index has sustained its intensity, remaining at 14 since July, emphasizing the necessity for vigilance against potential skin damage even as the rainy season approaches. As the year winds down towards October, the UV Index slightly decreases to 13, yet the trend of extreme exposure underscores the region's challenging sun conditions. For more detailed insights on UV levels, check out the Chanthaburi UV Index.
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As September unfolds in Chanthaburi, Thailand, the month greets residents and visitors alike with a gentle dip in sunshine hours, totaling 258 hours. Although this marks a slight decline from the vibrant summer months, it still captures the essence of a tropical paradise. Comparatively, September sees more daylight compared to the earlier part of the year, with only January and the late-spring months showing less sunlight. This subtle shift reflects the transition into autumn, allowing for comfortable days rich in golden light, perfect for exploring the lush landscapes and vibrant culture of the region. As the year progresses toward its final quarter, the sun's presence begins to balance with cooling breezes, setting the stage for beautiful outings amidst Chanthaburi's stunning natural scenery.
In Chanthaburi, Thailand, September marks a notable dip in sunny weather, with only a 6% chance of clear skies. This decline is part of a broader trend observed throughout the rainy season, where the likelihood of sunshine diminishes significantly from the previous months. While January and February boast over 50% chances of sun, the onset of the rainy season from April to August experiences a stark reduction, with August plummeting to just 8%. As September rolls in, the sun's presence becomes even more elusive, making it one of the cloudiest months of the year. This pattern highlights the tropical climate's cyclical nature, where the warm, sunny days of early year gradually give way to the heavy rains typical of late summer.
In Chanthaburi, Thailand, the rhythm of daylight unfolds in a captivating pattern throughout the year. September stands out as part of a consistent stretch of months that offer 12 hours of daylight, a delightful balance that fosters vibrant outdoor activities and exploration. Following the gradual increase from 11 hours in the initial months, daylight reaches its peak in the summer months before subtly tapering off again in October. This enduring 12-hour duration, maintained from March through September, showcases the region's tropical climate, where longer days invite locals and travelers alike to bask in the beauty of nature. As the year transitions, the predictable ebb and flow of sunlight creates a comforting backdrop for daily life in this enchanting corner of Thailand.
As September arrives in Chanthaburi, Thailand, the average wind speed gently settles at 2.6 m/s (6 mph), marking a slight decrease from the breezier months of July and August. This shift reflects a broader trend observed throughout the year, where wind speeds typically fluctuate, peaking during the rainy season in June and July. As the vibrant energy of summer wanes, September's winds offer a more tranquil atmosphere, inviting locals and visitors alike to enjoy the serene landscapes. In the context of the year, September stands as a transitional month, bridging the spirited summer breezes and the more moderate winds of autumn, setting the stage for the refreshing gusts that will come in the following months.
Weather in Chanthaburi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Chanthaburi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. September boasts a significantly warmer climate with average temperatures around 28°C (82°F) and high humidity levels reaching 87%. It's also a notably wetter month, experiencing 379 mm (14.9 in) of rainfall over 29 days. In stark contrast, January offers a more moderate climate, with temperatures averaging 27°C (81°F) and significantly lower humidity at 59%. This month sees much less precipitation, with only 39 mm (1.5 in) falling over just 8 days. For more on the specific conditions in January, visit Chanthaburi weather in January.
When comparing the weather in September to that of February, notable differences emerge. September tends to be much wetter, with an average precipitation of 379 mm over 29 days, contributing to a high humidity level of 87%. In contrast, February experiences significantly less rainfall, only 30 mm over 9 days, resulting in a much drier atmosphere with humidity dropping to 58%. In terms of temperature, both months share similar averages, with September having a minimum of 25°C (77°F) and February slightly cooler at 20°C (68°F), while February can occasionally reach a maximum of 33°C (91°F). For more specific details, you can visit Chanthaburi weather in February.
September and March in Chanthaburi present notable differences in weather patterns. While both months feature averages around 28°C (82°F), September tends to be more humid, with an average humidity of 87% and significant rainfall totaling 379 mm (14.9 in) over 29 days. In contrast, March boasts a slightly lower humidity level of 61% and far less rainfall, with only 83 mm (3.3 in) across 18 days. The temperatures in March can peak slightly higher, reaching a maximum of 33°C (91°F), compared to September's maximum of 32°C (90°F). For more detailed weather insights, you can check Chanthaburi weather in March.
When comparing the weather in September and April, we find notable differences in temperature, precipitation, and humidity. September typically sees warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at 32°C (90°F). In contrast, April boasts slightly cooler lows with a minimum of 20°C (69°F), while the average temperature is higher at 29°C (84°F), reaching maximums of 34°C (94°F). Precipitation is significantly more prevalent in September, with 379 mm (14.9 in) of rain over 29 days, compared to April's 121 mm (4.8 in) over 21 days. Moreover, the humidity in September is higher at 87%, while April enjoys a more comfortable level at 70%. For more details on April weather, you can refer to the following link: Chanthaburi weather in April.
In comparing the weather between September and May, both months experience similar temperature ranges, with September averaging 28°C (82°F) and May slightly warmer at 29°C (84°F). However, September is marked by higher humidity at 87%, compared to May's more comfortable 80%. Precipitation is considerably greater in September, totaling 379 mm (14.9 in) over 29 days, whereas May sees a lower rainfall of 272 mm (10.7 in) across 28 days. For more detailed information about the climate in May, you can check Chanthaburi weather in May.
In September, the weather remains quite warm with a minimum temperature of 25°C (77°F), averaging around 28°C (82°F), and peaking at 32°C (90°F). The month is characterized by significant rainfall, with 379 mm (14.9 in) spread over 29 days and high humidity at 87%. In contrast, June features a slightly higher minimum temperature of 26°C (78°F), with similar average and maximum temperatures of 28°C (84°F) and 31°C (89°F) respectively. Rainfall in June totals 362 mm (14.3 in), falling over 28 days, and the humidity is slightly lower at 85%. For more details on weather conditions in June, you can check Chanthaburi weather in June.
In comparing the weather between September and July, both months experience similar temperature ranges, with minimums around 25°C (77°F) and average highs of 28-32°C (82-90°F). However, September tends to be slightly wetter, with 379 mm (14.9 in) of precipitation over 29 days, compared to July's 364 mm (14.3 in) over 30 days. Humidity levels are also comparable, with September at 87% and July at 86%. For more details on July's climate, you can refer to Chanthaburi weather in July.
September and August share similar temperature ranges, with both months experiencing minimum temperatures around 25°C (77°F) and average temperatures close to 28°C (82°F). However, September sees a slightly higher maximum temperature of 32°C (90°F) compared to August's 31°C (88°F). In terms of precipitation, September has a total of 379 mm (14.9 in) over 29 days, slightly exceeding August's 367 mm (14.4 in) over the same number of days. Both months exhibit high humidity levels, with September at 87% and August at 88%. For more details on August weather, you can check this link: Chanthaburi weather in August.
September and October in Chanthaburi present a transition in weather patterns. While both months exhibit similar average temperatures around 28°C (82°F), September tends to be slightly warmer at its maximum, reaching 32°C (90°F), compared to October's 33°C (91°F). Precipitation is notably higher in September, with 379 mm (14.9 in) falling over 29 days, whereas October sees a reduction to 282 mm (11.1 in) over 24 days. Humidity levels are also slightly lower in October at 83%, compared to September’s 87%. For more detailed insights, you can check Chanthaburi weather in October.
In September, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average high of 32°C (90°F). However, it also experiences significant rainfall, totaling 379 mm (14.9 in) over 29 days, contributing to a high humidity level of 87%. In contrast, November brings slightly cooler weather, with minimum temperatures around 23°C (74°F) and a maximum of 33°C (91°F). The month is markedly drier, receiving only 53 mm (2.1 in) of precipitation over just 10 days, and the humidity drops to a more comfortable 78%. For a detailed look at the climate during this time, check out Chanthaburi weather in November.
September weather typically features warmer temperatures with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum reaching up to 32°C (90°F). This month also sees significant rainfall, with precipitation levels reaching 379 mm (14.9 in) over 29 days and high humidity at 87%. In contrast, December offers cooler conditions, with a minimum temperature of 18°C (64°F) and an average of 27°C (80°F), while still reaching a maximum of 32°C (91°F). Rainfall drops dramatically to just 35 mm (1.4 in) over only 5 days, alongside a lower humidity level of 70%. For more details on weather patterns, you can check Chanthaburi weather in December.
September in Chanthaburi brings a unique blend of warm temperatures and high humidity, setting it apart from the drier months. With an average temperature around 28°C (82°F), the weather feels balmy despite the frequent rain. This month witnesses heavy precipitation, often resulting in nearly daily rain showers, which contributes to the overall lushness of the region. The vibrant landscape contrasts with the sweltering heat of the preceding months, making September a month of transformation in Chanthaburi's climate. For more detailed insights on what to expect throughout the year, check out Chanthaburi Climate.