Last updated: August 27, 2025
September in That Phanom, Thailand presents a warm and humid atmosphere, with temperatures peaking at a maximum of 35°C (95°F) and averaging around 28°C (82°F). The cooler nights offer some relief, with minimum temperatures dropping to 22°C (72°F). This month is characterized by considerable rainfall, totaling 259 mm (10.2 in) over 24 days, leading to an average humidity level of a steamy 86%. Visitors should be prepared for a vibrant, yet wet, tropical experience, where the lush landscape thrives amidst the frequent showers.
In September, That Phanom, Thailand, maintains a warm tropical climate, with temperatures showcasing a consistent pattern characteristic of the region. The minimum temperature hovers at a comfortable 22°C (72°F), while the average settles around 28°C (82°F), perfect for outdoor activities and exploration. With maximum temperatures reaching up to 35°C (95°F), the heat remains manageable, especially following the slightly cooler months of August. Overall, September offers a pleasant balance, as the warm days invite visitors to enjoy the lush landscapes, yet the balmy evenings allow for comfortable relaxation under the stars.
September in That Phanom, Thailand, continues the region's pronounced wet season, recording an impressive 259 mm (10.2 in) of precipitation over 24 days. This amount marks a noticeable decrease from the intensely rain-soaked months of July and August, which saw peak rainfall of 394 mm (15.5 in) and 351 mm (13.8 in), respectively. Despite this decline, September remains significantly wetter than the early months of the year, which typically experience minimal rainfall. As the monsoon season ebbs towards October, the frequency of rainy days also begins to reduce, suggesting a gradual transition toward drier conditions. The heavy precipitation in September not only underscores the seasonal patterns of the region but also highlights its lush, vibrant landscapes that thrive in the aftermath of the rains.
In September, humidity in That Phanom, Thailand experiences a notable shift, measuring at 86%. This aligns with the region's trend of increasing humidity as the year progresses, following the peak months of July and August, which boast levels of 90% and 92% respectively. The dramatic rise in humidity during the summer months can be attributed to the monsoon season, bringing consistent rainfall and higher moisture levels in the air. As the year turns towards its end, humidity begins a gradual decline, but September still holds onto significant moisture, creating a lush environment that is characteristic of the region’s tropical climate. This interplay of high humidity serves to enhance the vibrant landscapes and rich biodiversity that define That Phanom, making it a captivating destination for both nature lovers and adventurers.
As September rolls in That Phanom, Thailand, the UV Index remains a striking 14, categorizing the sun's intensity as extreme and necessitating vigilant sun protection. Following a pattern observed throughout the year, September's UV levels mirror those of the preceding months, which consistently demonstrate high exposure risks, with burn times peaking at just 10 minutes. This trend underscores the importance of safeguarding your skin, as the area experiences near-unrelenting sun from January to July and a slight decrease in October. Whether you’re exploring the beautiful landscapes or enjoying outdoor activities, be sure to take precautions and stay informed about the That Phanom UV Index to enjoy a safe, sun-filled experience.
UV Risk Categories
In September, That Phanom experiences a vibrant transition as it enjoys 274 hours of sunshine, continuing its trend of abundant daylight through the year. Although this marks a slight decrease from the sunny spells of earlier months, like the peak of 322 hours in March, it remains a bright period that reflects the region's consistent warmth and relatively dry climate. Following the rainy season, September serves as a bridge, ushering in softer light while still offering ample opportunities for outdoor adventures. As the days grow shorter, this month captures a perfect blend of golden sunsets and cooling breezes, inviting visitors to savor the lingering summer vibes before the weather cools further in October.
In That Phanom, Thailand, the likelihood of sunny weather in September is relatively low, sitting at just 18%. This trend marks a significant decline following the bright and sunny months of January and February, which boast chances of sunshine at 80% and 84%, respectively. As the year progresses toward September, the chances of sunny days diminish sharply, particularly during the rainy months of June, July, and August, where the sun shines only about 15% of the time. By October, conditions begin to improve slightly with a 26% chance of sun, indicating that September is one of the cloudier months of the year in this region. With the evident drop in sunshine, visitors planning a trip during this time should brace themselves for a higher likelihood of wet weather.
In September, That Phanom enjoys a delightful 12 hours of daylight, consistent with the preceding months of April, May, June, July, and August. This period marks a gentle transition as the daylight gradually starts to diminish, following the longer days of summer. The trend reveals a clear pattern: daylight duration peaks during the mid-year months, providing ample sunlight before settling into the shorter days of autumn and winter. With a stable 12-hour stretch in September, locals and visitors alike can revel in the warm, sunlit days as nature begins its shift towards cooler seasons.
In September, the winds in That Phanom, Thailand, typically slow down to a gentle 1.7 m/s (4 mph), marking one of the calmest months of the year. This dip contrasts sharply with the robust breezes of January and December, where average speeds reach 3.4 m/s (8 mph) and 3.5 m/s (8 mph), respectively. The transition from the hotter months of April and May, characterized by their lowest wind speeds, prepares the landscape for the upcoming, more invigorating fall months. The overall trend reveals a gentle ebb and flow of wind throughout the year, with September remaining a tranquil period, an idyllic time for those seeking serenity amidst the lush surroundings of Thailand's rural beauty.
Weather in That Phanom varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in That Phanom, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather is characterized by warm temperatures, with a minimum of 22°C (72°F) and an average of 28°C (82°F), peaking at a hot 35°C (95°F). However, it also brings significant rainfall, with 259 mm (10.2 in) of precipitation over 24 days, contributing to a high humidity level of 86%. In contrast, January offers much cooler temperatures, featuring a minimum of 9°C (48°F) and an average of 23°C (74°F), while still reaching up to 35°C (95°F). The month is notably dry, with just 4 mm (0.1 in) of rain over 1 day, and a lower humidity of 59%. For more detailed weather information, you can visit That Phanom weather in January.
September and February present contrasting weather patterns. In September, the temperatures range from a minimum of 22°C (72°F) to a maximum of 35°C (95°F), with an average of 28°C (82°F). This month is characterized by high humidity at 86% and significant rainfall, with around 259 mm (10.2 in) of precipitation spread over 24 days. In stark contrast, February offers a cooler climate with temperatures ranging from 12°C (53°F) to a scorching 37°C (99°F) and an average of 24°C (75°F). Rainfall during this month is minimal, with only 10 mm (0.4 in) over just one day, and the humidity drops to a comfortable 54%. For more details, check out That Phanom weather in February.
In September, the weather is typically warm and humid, with average temperatures around 28°C (82°F) and maximums reaching up to 35°C (95°F). This month also experiences significant rainfall, totaling 259 mm (10.2 in) over 24 days, resulting in a high humidity level of 86%. In contrast, March is generally hotter and drier, with average temperatures of 27°C (81°F) and highs soaring to 38°C (101°F). Rainfall is minimal, with only 36 mm (1.4 in) recorded over just 6 days, leading to a much lower humidity of 45%. For more specifics on March weather, you can check That Phanom weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences warmer temperatures, with average highs around 35°C (95°F) and consistently high humidity levels at 86%. In contrast, April can reach a scorching maximum of 40°C (104°F), though the overall humidity is significantly lower at 40%. Additionally, September sees much more rainfall, with 259 mm (10.2 in) spread over 24 days, while April has only 67 mm (2.6 in) of precipitation across 10 days. For more detailed insights into April's conditions, you can visit That Phanom weather in April.
In comparing the weather between September and May, September tends to be slightly warmer on average, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 35°C (95°F). The month experiences significant rainfall, with 259 mm (10.2 in) over 24 days, contributing to a notably high humidity level of 86%. In contrast, May features a broader temperature range, with a minimum of 17°C (62°F) and maximum reaching a scorching 39°C (103°F), but it sees less precipitation at 168 mm (6.6 in) over 20 days, resulting in a much lower humidity of 65%. For more detailed insights on May's weather, you can visit That Phanom weather in May.
When comparing the weather between September and June, we see some notable differences. In September, the temperatures range from a minimum of 22°C (72°F) to a maximum of 35°C (95°F), with an average of 28°C (82°F). This month experiences considerable rainfall, totaling 259 mm (10.2 in) over 24 days, and high humidity levels at 86%. In contrast, June has a slightly warmer temperature range, with minimums of 24°C (75°F) and maximums reaching up to 37°C (98°F), averaging 29°C (84°F). The precipitation is lower in June, accumulating to 191 mm (7.5 in) over 23 days, and the humidity is somewhat less at 82%. For more detailed information, you can visit That Phanom weather in June.
In comparing the weather of September and July, both months exhibit warm temperatures, with September showing a slightly cooler minimum temperature of 22°C (72°F) compared to July's minimum of 24°C (75°F). The average temperatures remain relatively similar at 28°C (82°F) for September and 28°C (83°F) for July. However, July tends to be slightly hotter overall, reaching a maximum of 36°C (97°F) versus September's maximum of 35°C (95°F). Rainfall is significant in both months, with July experiencing higher precipitation at 394 mm (15.5 in) over 26 days, compared to September's 259 mm (10.2 in) over 24 days. Additionally, humidity levels are slightly higher in July at 90%, compared to 86% in September. For more detailed information about the weather patterns in July, you can explore That Phanom weather in July.
In comparing the weather of September and August, we notice that both months share similar temperature ranges, with minimums of 22°C (72°F), averages of 28°C (82°F), and maximums reaching 35°C (95°F). However, September is characterized by lower precipitation levels, with 259 mm (10.2 in) over 24 days, compared to August's heavier rainfall of 351 mm (13.8 in) across 28 days. Additionally, September experiences slightly lower humidity at 86%, while August's humidity averages around 92%. For more detailed insights on August's conditions, you can check That Phanom weather in August.
In September, the weather tends to be warmer and more humid with average temperatures reaching up to 28°C (82°F) and maximum highs peaking at 35°C (95°F). This month also experiences significant rainfall, totaling 259 mm (10.2 in) over 24 days, creating a humid environment with humidity levels averaging 86%. In contrast, October brings slightly cooler temperatures with a minimum of 18°C (64°F) and an average of 27°C (80°F), while still reaching maximum highs of 35°C (96°F). Rainfall in October is notably lighter, with only 156 mm (6.1 in) occurring over 13 days, resulting in a somewhat reduced humidity of 80%. For a detailed look at the weather in October, you can visit That Phanom weather in October.
In September, the weather is significantly warmer and more humid, with average temperatures around 28°C (82°F) and high humidity at 86%. The month also sees considerable rainfall, with precipitation reaching 259 mm (10.2 in) over 24 days, making it one of the wetter months. In contrast, November offers a more comfortable climate, with average temperatures dropping to 25°C (78°F) and humidity decreasing to 72%. Additionally, November experiences minimal rainfall, totaling just 22 mm (0.9 in) over only 3 days, making it a much drier month. For more detailed weather information, you can check That Phanom weather in November.
In September, the weather is notably warmer and more humid, with average temperatures around 28°C (82°F) and maximums reaching up to 35°C (95°F). This month also experiences significant rainfall, averaging 259 mm (10.2 in) over 24 days, leading to a high humidity level of 86%. In contrast, December sees a marked drop in humidity and precipitation, with average temperatures cooling to 23°C (73°F) and minimal rainfall of just 6 mm (0.2 in) over only 1 day. The cooler temperatures in December, coupled with lower humidity (66%), create a more comfortable climate for outdoor activities. For more details about December’s climate in that region, you can visit That Phanom weather in December.
As September rolls in, That Phanom experiences a significant shift in weather patterns, distinguishing it from other months. The warm temperatures persist, peaking at 35°C, but are accompanied by high humidity levels around 86%, creating a notably sticky atmosphere. Rainfall becomes a prominent feature, with a substantial 259 mm of precipitation spread across 24 days, making it one of the wettest months of the year. This combination of heat and moisture leads to lush landscapes, but it also calls for travelers to prepare for the frequent downpours. For a deeper dive into the unique weather characteristics of September, visit That Phanom Climate.