September Weather in Phitsanulok, Thailand

Last updated: August 27, 2025

In September, Phitsanulok, Thailand experiences a blend of warmth and moisture, with maximum temperatures reaching up to 36°C (97°F) and an average around 29°C (84°F). Evenings offer a respite with minimum temperatures dipping to 24°C (76°F). This month is characteristically wet, as the region registers a notable precipitation amount of 264 mm (10.4 in) over 24 days, accompanied by high humidity levels of 86%. Visitors should prepare for a lush and vibrant landscape, shaped by the frequent rainfall that defines this period.

September Temperature in Phitsanulok

In September, Phitsanulok experiences a subtle shift as temperatures begin to cool slightly from the sweltering summer months. With a minimum temperature of 24°C (76°F) and an average of 29°C (84°F), the weather remains comfortably warm. The maximum temperature caps at 36°C (97°F), indicating a continuation of the heat typical for this time of year, though not as extreme as the height of April and May. This transitional period marks the end of the intense heat, paving the way for the cooler months ahead, while still offering plenty of sunny days for outdoor exploration. Overall, September balances warmth and comfort, making it an inviting time to experience the culture and beauty of Thailand.

September Weather in Phitsanulok: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Phitsanulok, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phitsanulok, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec788086898886848484848277
Data source: Temperature data for Phitsanulok generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Phitsanulok

September marks a significant transition in Phitsanulok’s rainfall patterns, as the monsoon season continues to exert its influence. With 264 mm (10.4 in) of precipitation over 24 days, this month stands out as one of the wetter periods of the year, though it is slightly less than the peaks seen in July and August. The frequency of rain during September keeps the lush landscape vibrant, while also foreshadowing a gradual decline in rainfall as the city transitions into the drier months ahead. This pattern highlights a clear trend of increased rainfall from the start of the year, culminating in a peak during the heart of the rainy season, before tapering off significantly in the following months.

September Precipitation Trends in Phitsanulok

The chart displays monthly precipitation patterns in Phitsanulok, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Phitsanulok, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec172112851522472833322641442417
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Phitsanulok

As September transitions in Phitsanulok, Thailand, the humidity remains notably high at 86%, continuing the trend established in the preceding months. This peak follows an upward trajectory from the relative comfort of 39% in March, steadily rising through the sweltering summer months, where humidity levels escalated from 69% in May to 87% in August. Such elevated humidity levels not only create a sticky atmosphere but also signal the onset of the rainy season, making September a month of thick, damp air as it prepares to shift into the cooler months ahead. The subsequent decline to 74% in October suggests an impending relief, yet the lingering humidity serves as a reminder of the tropical climate that envelops this vibrant region.

September Average Humidity in Phitsanulok

This chart illustrates the average monthly humidity levels in Phitsanulok, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Phitsanulok is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%49%39%40%69%81%83%87%86%74%63%57%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Phitsanulok

As September arrives in Phitsanulok, Thailand, residents and visitors alike should remain vigilant about sun exposure, with an impressive UV Index of 14 marking this month as part of an ongoing trend of extreme UV levels. This high rating indicates a burn time of only 10 minutes, emphasizing the need for proper sun protection. Interestingly, the UV Index has been consistently elevated throughout the summer months, peaking at 14 in both July and August, and maintaining this intensity into September. This trend highlights the region’s challenging sun conditions during this period, underscoring the importance of taking proactive measures against UV radiation. For more detailed information on UV levels throughout the year, check out Phitsanulok UV Index.

Maximum UV Index Levels in Phitsanulok for September

The chart shows the monthly maximum UV Index (UVI) for Phitsanulok in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Phitsanulok typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10111213131314141412108
Data source: Phitsanulok September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Phitsanulok

September in Phitsanulok, Thailand, experiences a delightful 278 hours of sunshine, representing a notable balance in the seasonal shift of light. Following the lush, rainy months of mid-year, where sunshine hours dipped to a low of 256 in August, September shines with a rejuvenating brightness that sets the stage for the coming dry season. This month’s sunshine fabrics a comforting cloak of warmth, as daylight gradually increases again into October’s 293 hours. The overall pattern reveals a summer retreat, transitioning into an autumnal glow, making September a perfect time for outdoor adventures under the Thai sun.

Monthly Sunshine Duration in Phitsanulok: September Highlighted

The September sunshine duration represents the total number of hours Phitsanulok experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec255h295h330h321h326h286h269h256h278h293h307h316h
Data source: Phitsanulok September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Phitsanulok During September

In Phitsanulok, Thailand, the likelihood of sunny weather takes a noticeable dip in September, with only a 12% chance of sunshine. This trend follows a sharp decrease from the more promising months earlier in the year, such as February, which boasts an impressive 89% chance of clear skies. As the rainy season approaches, the sun seems to shy away, becoming increasingly elusive from April through August, before maintaining its low presence well into September. Following this, the chances begin to rebound in October, making the latter part of the year a more favorable period for those seeking sun-drenched days. Overall, if you're planning a trip in September, be prepared for the possibility of overcast skies and rain rather than basking in bright sunlight.

Percentage of Sunny Days in September in Phitsanulok

The chart illustrates the percentage of sunny days in Phitsanulok throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Phitsanulok experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec78%89%69%25%39%16%12%12%12%25%55%82%
Data source: Phitsanulok September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Phitsanulok in September

As September unfolds in Phitsanulok, Thailand, daylight duration settles at a comfortable 12 hours, maintaining the pattern established during the preceding months of April, May, June, July, and August. This month marks a transition, where the abundant light of summer gently yields to the hint of shorter days ahead. Following the longer days of June and July, September's daylight reflects a slight tapering but still provides plenty of time for outdoor activities and exploration. As October approaches, the amount of sunlight will continue to decrease, inviting a cozy shift toward the cooler months ahead—an annual rhythm that resonates with the changing seasons.

Average Daylight Hours in Phitsanulok for September

The chart illustrates the variation in daylight duration in Phitsanulok throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 14m11h 34m12h 2m12h 30m12h 54m13h 6m13h12h 39m12h 12m11h 44m11h 20m11h 7m
Data source: Phitsanulok daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Phitsanulok

As September arrives in Phitsanulok, Thailand, the average wind speed settles at 1.6 m/s (3 mph), offering a gentle breath of air that continues the trend of slightly fluctuating winds throughout the year. Following a peak in March at 2.1 m/s (5 mph), the winds gradually soften in the months leading up to September, reflecting a consistent transition from the drier season into the more humid climate. Interestingly, September's breeze is a touch calmer than the preceding months, hinting at the onset of the rainy season while maintaining the pleasant atmosphere that characterizes this vibrant region. With an overall range of 1.2 to 2.1 m/s, the wind conditions remain relatively mild, making Phitsanulok an inviting destination for those who appreciate tranquil outdoor experiences during the changing seasons.

Average September Wind Speed in Phitsanulok

The chart displays monthly wind speed patterns in Phitsanulok, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.72.11.61.71.91.81.71.6 m/s1.21.21.4
Data source: Phitsanulok September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Phitsanulok Compares to Other Months

Weather in Phitsanulok varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Phitsanulok, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January exhibit strikingly different weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 36°C (97°F), with an average temperature of 29°C (84°F). This month is characterized by high humidity at 86% and significant rainfall, with 264 mm (10.4 inches) of precipitation recorded over 24 days. In contrast, January experiences much cooler temperatures, with a minimum of 13°C (56°F), an average of 26°C (78°F), and a maximum that also reaches 36°C (97°F). Additionally, January is considerably drier, receiving only 17 mm (0.7 inches) of rain over just 2 days and boasting a lower humidity level of 52%. For more detailed information, you can check Phitsanulok weather in January.

When comparing the weather in September and February, notable differences emerge in both temperature and precipitation. September boasts a warmer climate, with average temperatures reaching 29°C (84°F) and highs peaking at 36°C (97°F), alongside high humidity at 86%. This month also experiences significant rainfall, with about 264 mm (10.4 in) over 24 days. In contrast, February offers a more temperate experience, featuring average temperatures around 27°C (81°F) and maximums hitting 38°C (101°F). Rainfall is minimal in February, with only 21 mm (0.8 in) recorded over just 2 days, and humidity drops to a more comfortable 49%. For a detailed look at the February climate, you can check out Phitsanulok weather in February.

September and March present contrasting weather conditions. In September, temperatures range from a minimum of 24°C (76°F) to a blistering maximum of 36°C (97°F), with an average temperature of 29°C (84°F). The month is marked by heavy rainfall, receiving a significant 264 mm (10.4 in) over 24 days, combined with a high humidity level of 86%. In contrast, March boasts warmer temperatures with a minimum of 18°C (65°F) and a maximum that reaches up to 40°C (104°F), while maintaining an average of 30°C (87°F). This month is much drier, with just 11 mm (0.5 in) of precipitation spread over only 3 days and a notably lower humidity at 39%. For more detailed information, check Phitsanulok weather in March.

September and April present contrasting weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). This month is characterized by high humidity at 86% and significant rainfall, totaling 264 mm (10.4 in) over 24 days, making it one of the wettest periods of the year. In stark contrast, April showcases higher average temperatures, peaking at a maximum of 42°C (108°F) and an average of 31°C (89°F), while the minimum stands at 22°C (71°F). Rainfall is considerably less in April, with only 85 mm (3.3 in) spread over just 8 days and a much lower humidity level of 40%. These differences highlight the transition from the wet, humid conditions of September to the hot, drier climate typical of April. For those interested in more details on April's weather, visit Phitsanulok weather in April.

September and May present quite contrasting weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). This month also sees significant precipitation, totaling 264 mm (10.4 in) over 24 days, and high humidity levels at 86%. In contrast, May experiences slightly higher average temperatures, peaking at 42°C (107°F), while maintaining the same minimum temperature of 24°C (76°F). However, it has less precipitation, with 152 mm (6.0 in) over 20 days and lower humidity at 69%. If you're looking for detailed insights into May weather, you can check out Phitsanulok weather in May.

In comparing the weather of September and June, both months exhibit similar minimum temperatures, averaging around 24°C (76°F). However, June tends to be slightly warmer on average, with temperatures peaking at a maximum of 38°C (101°F) compared to September's maximum of 36°C (97°F). Precipitation is also noteworthy; September receives about 264 mm (10.4 in) of rain over 24 days, making it wetter than June, which sees 247 mm (9.7 in) over 25 days. Additionally, September has a higher humidity level at 86%, compared to June's 81%. For more specific insights about June weather, you can refer to Phitsanulok weather in June.

September and July exhibit similar temperature ranges, with September experiencing slightly lower minimum and maximum temperatures (min 24°C / 76°F and max 36°C / 97°F) compared to July's min of 25°C / 77°F and max of 37°C / 100°F. Both months have heavy rainfall, but July accumulates a bit more precipitation at 283 mm (11.2 in) over 26 days, whereas September sees 264 mm (10.4 in) over 24 days. Additionally, September has a higher humidity level at 86%, while July's humidity is slightly lower at 83%. For a more detailed look at July's weather, you can visit Phitsanulok weather in July.

In comparing the weather of September and August, September shows a slight decrease in minimum temperature at 24°C (76°F) compared to August's 25°C (77°F), while the average temperature remains consistent at 29°C (84°F). The maximum temperature in September is 36°C (97°F), just a notch lower than August’s peak of 37°C (98°F). Although both months experience high humidity, September has a marginally lower humidity level at 86% versus August's 87%. Precipitation also decreases in September, with 264 mm (10.4 in) falling over 24 days compared to August’s 332 mm (13.1 in) spread over 27 days. For a more detailed look at August weather, you can visit Phitsanulok weather in August.

September and October present noticeable differences in weather patterns. In September, temperatures maintain a minimum of 24°C (76°F), an average of 29°C (84°F), and peak at 36°C (97°F). However, the month is characterized by high precipitation of 264 mm (10.4 in) over 24 days, contributing to a high humidity level of 86%. In contrast, October sees a slight decrease in minimum temperature at 23°C (74°F) while still averaging 29°C (84°F) and reaching a maximum of 37°C (98°F). Rainfall significantly decreases to 144 mm (5.7 in) across 19 days, resulting in lower humidity levels of 74%. For more details, check out Phitsanulok weather in October.

September and November showcase notable contrasts in weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a scorching maximum of 36°C (97°F), with an average of 29°C (84°F). This month also experiences significant rainfall, totaling 264 mm (10.4 in) over 24 days, contributing to a high humidity level of 86%. In contrast, November offers a milder climate, with a minimum temperature of 18°C (65°F) and an average of 28°C (82°F), while still reaching up to 36°C (97°F). The month is much drier, with only 24 mm (0.9 in) of precipitation over just 4 days and decreased humidity at 63%. These shifts indicate a transition from the wet, humid conditions of September to the cooler, drier atmosphere of November. For more detailed information, visit Phitsanulok weather in November.

September and December present a stark contrast in weather patterns. In September, temperatures range from a minimum of 24°C (76°F) to a maximum of 36°C (97°F), with an average of 29°C (84°F). The month is characterized by high humidity at 86% and significant rainfall, totaling 264 mm (10.4 in) over 24 days. In contrast, December features cooler temperatures, with lows dipping to 11°C (52°F) and a more comfortable average of 25°C (77°F), while still reaching a maximum of 36°C (97°F). Precipitation dramatically decreases to just 17 mm (0.7 in) over the course of only one day, and humidity drops to 57%. For more details on the December weather, you can visit Phitsanulok weather in December.

Compare Phitsanulok's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Phitsanulok

As September unfolds in Phitsanulok, it marks a distinct shift in weather patterns compared to other months. With a high humidity level of 86%, the air feels more oppressive, accompanied by frequent rainfall—averaging 264 mm over 24 days—that transforms the landscape into a lush, green oasis. The temperatures hover around a warm average of 29°C, with peaks reaching up to 36°C, creating a sticky atmosphere that's characteristic of the rainy season. This combination of heat and moisture not only defines the climate but also impacts local life, making September unique in its blend of sweltering warmth and refreshing downpours. For a deeper dive into the weather trends throughout the year, visit Phitsanulok Climate.