Last updated: August 27, 2025
September in Phetchaburi, Thailand brings a tropical ambiance characterized by balmy temperatures and a high humidity level averaging around 87%. Daily highs can climb to a sizzling 35°C (94°F) while nighttime offers a cooler respite with lows around 25°C (77°F). The month sees an average temperature of 28°C (83°F), providing a warm, inviting climate. However, expect frequent rain, with 164 mm (6.5 in) of precipitation recorded over 22 days, adding a refreshing touch to the verdant landscape. Visitors during this month should prepare for both warmth and moisture, embracing the enchanting beauty of Phetchaburi's rainy season.
In September, Phetchaburi experiences a significant shift in temperatures as the rainy season takes hold. Minimum temperatures remain steady at 25°C (77°F), while the average dips slightly to 28°C (83°F), offering a mild reprieve from the heat of the preceding months. The maximum temperature peaks at a warm 35°C (94°F), providing plenty of warmth despite the likelihood of afternoon showers. This month showcases a balance between lingering summer warmth and the refreshing coolness brought by the rains, making it an ideal time for travelers to experience the lush landscapes and vibrant atmosphere of this picturesque Thai province.
In September, Phetchaburi experiences a noteworthy peak in precipitation, with an impressive 164 mm (6.5 in) of rainfall spread across 22 days. This significant increase follows the already substantial rainfalls of the preceding months and sets the stage for an even wetter October, which records 241 mm (9.5 in). September’s rainfall, more than any other month this year, highlights the shift into the rainy season, as the skies open up and refresh the landscape. This trend of rising precipitation not only underscores the impact of monsoonal patterns but also contributes to the lush greenery that characterizes Phetchaburi during this time.
In September, Phetchaburi experiences a notable humidity level of 87%, reflecting the peak of the rainy season. This figure indicates a slight decline from the previous months, where humidity reached an impressive 90% in August. The trend throughout the year showcases a gradual increase in moisture levels, starting from 58% in January and reaching its zenith during the mid-year months of July and August. As the wet season transitions into October, humidity begins to taper off, dropping to 83%. This cyclical pattern emphasizes the tropical climate's characteristic high humidity, making September one of the more humid months, perfectly positioning the region within a lush, green environment.
As September rolls into Phetchaburi, Thailand, the UV Index remains a striking 14, classifying it within the extreme exposure category. This trend of high UV levels has been consistent throughout the summer months, where both July and August also recorded a peak of 14. With a mere 10 minutes of burn time, it's crucial for residents and visitors alike to take precautions against sun exposure during this period. This continuous extreme UV intensity reminds us of the importance of sun safety, a theme that resonates throughout the region from February through October, where such elevated levels are commonplace. For a comprehensive understanding of UV patterns in Phetchaburi, explore the details at Phetchaburi UV Index.
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As the summer wanes, September in Phetchaburi, Thailand, ushers in a gentle transition with 272 hours of sunshine. While this month represents a noticeable dip from the sun-soaked days of March at 338 hours, the radiance still lingers, offering ample daylight for exploration. Following the peak of April and May, which basked in over 320 hours, September subtly reflects the onset of the rainy season, yet remains brighter than the preceding months of July and August. This gradual decline in sunshine hours sets the stage for the lush greenery that follows, marking a dynamic shift in the region's climate and inviting visitors to savor the last golden rays before the retreat of summer.
In September, Phetchaburi, Thailand, experiences a notably low chance of sunny weather, with only a 9% likelihood of clear skies. This pattern emerges as part of a broader downward trend in sunshine probability that begins mid-year, with July and August showing even lower percentages at 12% and 8% respectively. Contrasting sharply with the sunny starts of the year, such as January's 59% and February's impressive 76%, September's weather indicates a transition into the rainy season. As the monsoon influences the region, travelers and locals alike should prepare for predominantly overcast conditions and the likelihood of afternoon showers.
In September, Phetchaburi, Thailand, enjoys a consistent 12 hours of daylight, maintaining a stable trend that began in March and extends through the summer months. As the year progresses, daylight hours peak during the warmer season from March to August, showcasing a delightful balance of light and warmth. Following September, daylight begins to gradually decline, dropping to 11 hours in October, signaling the transition into the cooler months. This rhythm of daylight not only highlights the region's tropical climate but also offers a reliable backdrop for both daily activities and natural beauty throughout the year.
As September unfolds in Phetchaburi, Thailand, the winds begin to gently subside, averaging a modest 2.2 m/s (5 mph). This marks a noticeable shift from the more brisk conditions of previous months, where the wind speed typically hovered between 3.0 m/s and 3.9 m/s. Following the slight drops in July and August, September presents a calming breeze that invites reflection and relaxation, often a welcome change as the region transitions further into the rainy season. The overall trend suggests a gradual tapering of wind strength as the year progresses, making September a perfect time for serene outdoor activities amidst the lush landscapes, complemented by a softer, more soothing wind.
Weather in Phetchaburi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Phetchaburi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. In September, temperatures are notably warmer, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at a sweltering 35°C (94°F). This month also sees significant rainfall, with precipitation measuring 164 mm (6.5 in) over 22 days and a high humidity level of 87%. In contrast, January offers more moderate temperatures, with a minimum of 19°C (66°F) and an average of 27°C (80°F), with highs reaching 31°C (89°F). Rainfall during this month is much lighter at 31 mm (1.2 in) over only 3 days and humidity drops to a more comfortable 58%. For more details on January weather, visit Phetchaburi weather in January.
September and February showcase distinct weather patterns. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 35°C (94°F), with an average of 28°C (83°F). This month is characterized by significant rainfall, with 164 mm (6.5 in) spread over 22 days, contributing to high humidity levels of 87%. In contrast, February presents milder conditions, featuring temperatures that range from a minimum of 23°C (73°F) to a maximum of 32°C (90°F) and an average of 27°C (82°F). Precipitation is significantly lower in February, with only 13 mm (0.5 in) over 2 days, and the humidity drops to a comfortable 59%. For more details on February weather, you can refer to Phetchaburi weather in February.
In September, the weather tends to be hotter and more humid, with average temperatures ranging from 25°C (77°F) to a high of 35°C (94°F), coupled with significant rainfall of 164 mm (6.5 in) spread over 22 days and a humidity level of 87%. In contrast, March offers slightly cooler temperatures, with a minimum of 24°C (75°F) and a maximum of 33°C (91°F), alongside considerably less precipitation, totaling just 36 mm (1.4 in) over 3 days, and lower humidity at 62%. This stark difference in weather patterns makes September feel more oppressive, while March offers a more comfortable climate. For more specific details, you can refer to Phetchaburi weather in March.
In comparing the weather of September and April, September experiences warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (83°F), while April has slightly cooler minimum temperatures at 22°C (73°F) and a higher average of 30°C (85°F). Both months see a maximum temperature reaching up to 35°C (95°F), yet September is characterized by significantly higher precipitation levels at 164 mm (6.5 in) over 22 days compared to April’s 82 mm (3.2 in) over just 10 days. Additionally, September's humidity is noticeably higher at 87%, while April maintains a more comfortable 69% humidity. For more information on April weather in Phetchaburi, you can check out Phetchaburi weather in April.
In September, the weather tends to be slightly more humid with an average temperature of 28°C (83°F) and frequent rainfall, accumulating 164 mm (6.5 in) over 22 days. In contrast, May is typically warmer and drier, showcasing an average temperature of 30°C (86°F) with lower precipitation levels of 106 mm (4.2 in) across 17 days. The humidity in September reaches 87%, while in May it is more moderate at 79%, making May a bit more comfortable overall. For more specifics on May conditions, you can refer to this link: Phetchaburi weather in May.
September and June weather in Phetchaburi exhibit some notable similarities and differences. Both months experience high temperatures, with September averaging around 28°C (83°F) and June slightly warmer at 29°C (85°F). However, September is characterized by significantly higher precipitation, recording 164 mm (6.5 in) over 22 days compared to June’s 71 mm (2.8 in) over just 15 days. Humidity levels remain consistent in both months at 87%, contributing to a tropical feel. For a more detailed look at June weather patterns, you can refer to Phetchaburi weather in June.
In comparing the weather between September and July, September experiences slightly warmer temperatures, with average highs of 35°C (94°F) compared to July's 34°C (93°F). However, July has a marginally lower minimum temperature of 26°C (79°F) versus September's 25°C (77°F). Precipitation is significantly higher in September, totaling 164 mm (6.5 in) over 22 days, while July receives only 89 mm (3.5 in) across 19 days. Notably, humidity levels remain high throughout both months, with July reaching 89% and September at 87%. For more specific details, you can check the Phetchaburi weather in July.
In August, the weather features a slightly higher average temperature of 29°C (84°F) compared to September's 28°C (83°F). However, September sees a rise in precipitation, with 164 mm (6.5 in) falling over 22 days, contrasted to August's 105 mm (4.1 in) across 21 days. Humidity levels are also marginally lower in September at 87%, compared to August's 90%. For a detailed overview of the weather conditions in August, you can check Phetchaburi weather in August.
In comparing the weather of September and October, both months share similar average temperatures, with September slightly warmer, having a maximum of 35°C (94°F) compared to October's 33°C (91°F). However, October experiences greater precipitation, recording 241 mm (9.5 in) over 23 days, while September received 164 mm (6.5 in) across 22 days. Humidity levels are also slightly lower in October at 83%, compared to September's 87%. For a detailed overview of weather patterns, you can check Phetchaburi weather in October.
In September, the weather is noticeably warmer, with temperatures reaching a maximum of 35°C (94°F) and an average of 28°C (83°F). The month also experiences higher precipitation levels, with 164 mm (6.5 in) of rain over 22 days, contributing to a humid environment at 87% humidity. In contrast, November brings slightly cooler temperatures, peaking at 32°C (90°F) with an average of 28°C (82°F) and a minimum of 23°C (73°F). Additionally, rainfall decreases significantly to 94 mm (3.7 in) over just 12 days, resulting in lower humidity of 77%. For more detailed information, check out Phetchaburi weather in November.
September and December exhibit marked differences in weather patterns. September boasts higher temperatures with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at 35°C (94°F). This month is also characterized by significant rainfall, averaging 164 mm (6.5 in) over 22 days, accompanied by high humidity levels at 87%. In contrast, December offers milder temperatures with a minimum of 19°C (66°F), an average of 27°C (80°F), and a maximum of 32°C (89°F). The precipitation drops dramatically to just 25 mm (1.0 in) over only 3 days, resulting in a much lower humidity of 66%. For more details, check out Phetchaburi weather in December.
As September unfolds in Phetchaburi, the weather takes on a distinctive character, marked by elevated humidity levels and frequent precipitation. Residents and visitors can expect warm temperatures alongside a notable increase in rainfall, with over two-thirds of the month experiencing wet days. This combination creates a lush, vibrant atmosphere that sets September apart from the more arid months preceding it. If you're curious about how these conditions compare year-round, you can explore more about Phetchaburi's climate here.