Last updated: August 27, 2025
In September, Rayong, Thailand, experiences a tropical climate characterized by high humidity and considerable rainfall. With maximum temperatures reaching 34°C (93°F) and an average of 28°C (82°F), the warmth is palpable but often accompanied by refreshing downpours. This month sees an impressive 322 mm (12.7 in) of precipitation over 26 days, making it one of the wetter months of the year. The humidity levels hover around 87%, enhancing the sultry atmosphere while invigorating the lush landscape that surrounds this coastal province. Prepare for a vibrant blend of sun and rain as nature thrives under the tropical tropes of September in Rayong.
In September, Rayong, Thailand, maintains a consistently warm climate, with temperatures ranging from a minimum of 24°C (75°F) to a comfortable average of 28°C (82°F), peaking at a maximum of 34°C (93°F). Comparing this to the preceding months, September's nights are slightly cooler, providing relief from the heat, while the average temperature remains stable, mirroring the tropical nature of the region. The high temperatures are characteristic of the late rainy season, hinting at a transition as the month approaches October. Overall, September offers a warm, humid environment typical for Rayong, ideal for experiencing the lush surroundings and vibrant culture.
September marks a peak in rainfall for Rayong, Thailand, with a striking 322 mm (12.7 in) of precipitation, making it the wettest month of the year. This surge corresponds with an increase in rainy days, totaling 26 days, hinting at the region’s transition into the heart of the rainy season. Following a progressive climb in moisture throughout the preceding months, September's downpours are not merely a continuation but a notable culmination, leading to vibrant landscapes and a refreshing atmosphere. As the month comes to a close, the intensity of rainfall begins to taper into October, which itself remains substantial with 293 mm (11.5 in). The pattern observed highlights Rayong’s climatic rhythm, where the lush, verdant surroundings thrive on the abundant water before the approach of drier months.
In September, Rayong, Thailand experiences a notable humidity level of 87%, maintaining a close tie with the peak humidity of the preceding month, August, which recorded 88%. This month continues the trend of escalating humidity that starts in late spring, peaking during the summer months. As the year progresses from the lower averages of 59% in January to the striking 86% in July, September remains solidly ensconced in the high humidity spectrum, though it does begin a gradual decline heading into October with a drop to 83%. Overall, the consistent humidity patterns underscore Rayong's tropical climate, characterized by a lingering moisture that shapes the experience of this vibrant coastal city.
In September, Rayong, Thailand, experiences a consistently high UV Index of 14, falling under the extreme exposure category, with a burn time of just 10 minutes. This vigorous UV intensity is part of a broader trend seen throughout the months leading up to this point; starting from January's UV index of 10, the numbers have surged significantly. From February to August, the UV index has remained persistently high, primarily at 14, indicating that sun safety measures are crucial during this time. As you soak up the sun in Rayong, staying vigilant against skin damage is essential. For more insights on sun exposure and safety metrics, check out the detailed Rayong UV Index.
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As September arrives in Rayong, Thailand, residents and visitors can expect 246 hours of sunshine, a noticeable dip from the summer months but still vibrant enough to enjoy the outdoors. This trend marks the beginning of a gradual decrease in sunlight, following a peak of 334 hours in March and a steady high through the hotter months of April and May. Interestingly, September's sunshine hours are a reminder of the transitional nature of the region, as the days begin to shorten, leading into the more temperate months ahead. With the sun still shining bright, it’s the perfect time to savor the stunning coastal views and the warm atmosphere before the cooler months roll in.
In September, the likelihood of sunny weather in Rayong, Thailand significantly diminishes, with a mere 7% chance of sunshine. This marks the tail end of the rainy season, where the cloud cover and rain heavily overshadow clear skies. Notably, the trend shows a sharp decline in sunny days from the previous months, like April (17%) and May (28%), making September one of the least favorable months for sun-seekers. As the rainy season continues, visitors are encouraged to expect more cloudy days than sunny, reflecting a pattern that emphasizes September as a time for introspection and indoor activities rather than beach outings.
In September, Rayong, Thailand enjoys a consistent 12 hours of daylight, mirroring the trend established throughout the preceding months of June to August. This period of extended sunlight showcases the region's tropical climate, where days remain relatively stable as the year transitions towards the cooler months. As October approaches, daylight begins to wane slightly, returning to 11 hours, hinting at the seasonal shift. Overall, this pattern highlights Rayong's unique ability to maintain ample daylight during the heart of the rainy season, allowing residents and visitors alike to bask in the warm glow of the sun.
As September unfolds in Rayong, Thailand, the gentle whispers of wind remind us that summer is beginning to wane. With an average wind speed of 2.3 m/s (5 mph), this month's breeze is one of the more tranquil periods of the year. Following the slightly stronger gusts of June and July, where speeds reached up to 3.2 m/s (7 mph), September marks a shift towards calm, mirroring the tranquil atmosphere that accompanies the onset of the rainy season. This trend continues into October, where the wind picks up modestly to 2.5 m/s (6 mph), highlighting the gradual transition back to milder conditions. Overall, September stands out as a serene interlude, perfect for enjoying the scenic beauty of Rayong’s coastal charm.
Weather in Rayong varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rayong, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 34°C (93°F), with an average of 28°C (82°F), all while experiencing high humidity at 87%. This month also sees substantial rainfall, averaging 322 mm (12.7 in) across 26 days, making it one of the wettest months of the year. In contrast, January offers a milder climate with temperatures that range from a minimum of 17°C (63°F) to an average of 27°C (81°F), peaking at 34°C (93°F). Rainfall is minimal, totaling just 35 mm (1.4 in) over 7 days, and humidity drops significantly to 59%. For a detailed look at the January weather, you can refer to Rayong weather in January.
In September, the weather is typically warm and humid, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 34°C (93°F) and an average of 28°C (82°F). This month experiences significant precipitation, with 322 mm (12.7 in) falling over 26 days, leading to a high humidity level of 87%. In contrast, February offers a more pleasant climate, with temperatures varying from a minimum of 19°C (66°F) to a maximum of 34°C (93°F) and an average temperature of 27°C (81°F). Rainfall is minimal in February, totaling just 30 mm (1.2 in) over 7 days, and the humidity drops to a comfortable 58%. For more detailed information on February weather, you can visit Rayong weather in February.
September and March in Rayong offer distinct weather patterns. Both months share a similar average temperature of around 28°C (82°F), with high temperatures reaching up to 34°C (93°F). However, September is significantly wetter, with precipitation measuring 322 mm (12.7 in) over 26 days, resulting in a high humidity level of 87%. In contrast, March experiences much less rainfall, totaling only 78 mm (3.1 in) over 15 days, and has a lower humidity of 61%. This makes March a drier and generally more comfortable month compared to the often damp and humid conditions of September. For more details, check out Rayong weather in March.
In comparing the weather of September and April, significant differences are evident. September tends to be wetter, with an average temperature of 28°C (82°F) and high humidity at 87%, experiencing approximately 322 mm (12.7 in) of precipitation spread over 26 days. In contrast, April boasts a slightly higher average temperature of 29°C (84°F) and maximum highs reaching 35°C (95°F), but with much less rainfall at 158 mm (6.2 in) over 20 days and lower humidity at 70%. For more on April's climate specifics, check Rayong weather in April.
In September, the weather is characterized by slightly higher humidity at 87%, with average temperatures hovering around 28°C (82°F). The month experiences significant rainfall, with 322 mm (12.7 in) of precipitation spread over 26 days. In contrast, May offers a slightly warmer average temperature of 29°C (84°F) and a higher maximum temperature of 35°C (95°F), but with less rain at 239 mm (9.4 in) over 24 days and a lower humidity level of 80%. For more details, you can check Rayong weather in May.
In September, the weather is characterized by slightly warmer temperatures, with a minimum of 24°C (75°F), an average of 28°C (82°F), and a maximum reaching 34°C (93°F). This month also experiences notably higher precipitation levels, totaling 322 mm (12.7 in) over 26 days, leading to a higher humidity of 87%. In contrast, June presents marginally cooler temperatures, with minimums of 25°C (77°F) and averages of 29°C (84°F), while the maximums still peak at 34°C (93°F). Precipitation in June is lower at 211 mm (8.3 in) spread over 24 days, contributing to slightly lower humidity levels at 85%. For a detailed overview of the weather conditions in June, you can visit Rayong weather in June.
In comparing the weather conditions of September and July, both months exhibit warm temperatures, with July having a slightly higher minimum temperature of 25°C (77°F) compared to September's 24°C (75°F). The average daily temperatures remain consistent, with both months averaging around 28°C (82°F). However, July tends to be slightly warmer at its peak, reaching a maximum of 34°C (94°F) compared to September's 34°C (93°F). Precipitation levels are significantly higher in September, with 322 mm (12.7 in) of rain over 26 days, while July sees 226 mm (8.9 in) of rain over the same number of days. Humidity levels are similar, with September at 87% and July at 86%, creating a consistently muggy atmosphere throughout both months. For more detailed insights, you can check Rayong weather in July.
In August, the weather in Rayong is marked by a consistent temperature range, with a minimum of 24°C (76°F), an average of 28°C (83°F), and a maximum of 34°C (93°F). Precipitation during this month totals 223 mm (8.8 in) over 26 days, and humidity hovers around 88%. In contrast, September sees a similar temperature pattern with a minimum of 24°C (75°F), an average of 28°C (82°F), and a maximum of 34°C (93°F). However, the month is significantly wetter, experiencing 322 mm (12.7 in) of rainfall over the same number of days, resulting in a slightly lower humidity level of 87%. For a detailed look at August weather trends, visit Rayong weather in August.
September and October showcase similar temperature patterns, with September experiencing slight variations in daily temperatures, ranging from a minimum of 24°C (75°F) to a maximum of 34°C (93°F) and an average of 28°C (82°F). The humidity remains high at around 87% in September, accompanied by significant precipitation of 322 mm (12.7 in) over 26 days. In contrast, October maintains the same average and maximum temperatures, but with a minor drop in minimum temperature to 23°C (73°F). Rainfall decreases slightly to 293 mm (11.5 in) over 24 days, and humidity also lowers to 83%. This makes October marginally drier and less humid compared to September. For more details on the weather in this month, you can check Rayong weather in October.
In comparing the weather of September and November, September features warmer temperatures with a minimum of 24°C (75°F) and an average of 28°C (82°F), reaching up to a maximum of 34°C (93°F). However, it is also marked by significantly higher precipitation, totaling 322 mm (12.7 in) across 26 days, along with high humidity at 87%. In contrast, November sees slightly cooler temperatures, with a minimum of 22°C (72°F) and similar averages, but with a maximum of 34°C (94°F). Notably, November experiences much lower rainfall at 71 mm (2.8 in) over just 11 days and reduced humidity at 78%. For a more detailed overview, you can check Rayong weather in November.
In comparing the weather between September and December, September is characterized by significantly warmer temperatures, with a minimum of 24°C (75°F) and an average of 28°C (82°F), while December sees a cooler minimum temperature of 17°C (62°F) but maintains a similar average of 27°C (80°F). Notably, September also experiences much higher precipitation, with 322 mm (12.7 in) falling over 26 days, contrasting sharply with December’s mere 36 mm (1.4 in) over just 5 days. Additionally, September's high humidity at 87% makes it feel more uncomfortable, while December's humidity drops to 70%, resulting in a more pleasant atmosphere. For a detailed look at December's weather, check out Rayong weather in December.
In September, Rayong experiences a shift towards increased humidity and substantial rainfall, making it markedly different from the drier months of the year. With an average temperature hovering comfortably around 28°C (82°F), the click of warmth is accompanied by frequent downpours on about 26 days of the month, contributing to a hefty 322 mm of precipitation. This combination creates a lush and vibrant landscape, though it may require visitors to pack their umbrellas. As the month unfolds, the warmth remains inviting, but the explosive greenery and heightened moisture levels truly set September apart from Rayong's typically drier seasons. For more detailed insights into Rayong's climate patterns, explore Rayong Climate.