September Weather in General Santos, Philippines

Last updated: August 27, 2025

September in General Santos, Philippines brings a tropical embrace, characterized by maximum temperatures reaching 32°C (90°F) and an average of 26°C (79°F). The month experiences a significant amount of rainfall, totaling 232 mm (9.1 in), spread over 25 days, resulting in a notably humid atmosphere with levels around 80%. This combination of warmth and moisture creates a vibrant landscape, ideal for both local flora and outdoor activities, though visitors should prepare for intermittent showers throughout the month.

September Temperature in General Santos

In September, General Santos, Philippines, experiences a pleasant climate marked by a minimum temperature of 21°C (71°F) and an average of 26°C (79°F), with daytime highs reaching 32°C (90°F). This month reflects a stable trend observed throughout the year, with temperatures remaining consistent and slightly warmer than previous months like August and July. The comfortable range invites locals and visitors alike to enjoy outdoor activities as the heat remains manageable. As the transition into fall approaches, the lingering warm days contrast with the cooler evenings, creating an inviting atmosphere in this vibrant city.

September Weather in General Santos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in General Santos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In General Santos, 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).
JanFebMarAprMayJunJulAugSepOctNovDec787979808079787878797979
Data source: Temperature data for General Santos 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 General Santos

In September, General Santos experiences a significant amount of rainfall, with 232 mm (9.1 in) of precipitation spread over 25 days. This marks a continuation of the wet season, following the heavy downpours of May and June, which together often set the tone for the months that follow. While September’s totals are slightly less than the preceding months of May (390 mm) and June (345 mm), they remain robust, indicating the region’s reliance on seasonal rains for its lush landscapes. As the transitional month leading into October, September typically sees an increased frequency of showers, helping to maintain the area's vibrant ecosystem and agricultural productivity as the rainfall gradually levels out in the subsequent months.

September Precipitation Trends in General Santos

The chart displays monthly precipitation patterns in General Santos, 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 General Santos, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec204131201228390345277257232306240227
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in General Santos

In General Santos, Philippines, September ushers in a slight dip in humidity, averaging around 80%, a notable decrease from the peak months earlier in the year. The pattern reveals a gradual decline from the higher humidity levels of 87% experienced in both February and March. Following a steady stretch of 77% humidity from June to August, September's figures indicate a transition toward the drier months ahead. Notably, after the peak of early-year humidity, the trend stabilizes, suggesting a balanced climate where residents can expect a more comfortable atmosphere as they head into the fall. Overall, September's humidity paints a picture of seasonal change, setting the stage for the approaching cooler months.

September Average Humidity in General Santos

This chart illustrates the average monthly humidity levels in General Santos, 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 General Santos is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%87%87%83%77%77%77%78%80%77%76%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in General Santos

September in General Santos, Philippines, continues the trend of extreme UV intensity, with the UV Index reaching 15. This not only reinforces the consistent danger presented by the sun, as seen throughout the year, but also signals an important reminder for residents and visitors: the burn time remains a perilously short 10 minutes. As the monsoon period gives way to clear skies, it's crucial to stay vigilant against the sun's harmful rays. The data indicates a slight fluctuation compared to the preceding months, but the overall exposure category hasn't wavered from the extreme classification. To stay informed and protect yourself, check out the detailed information on the General Santos UV Index.

Maximum UV Index Levels in General Santos for September

The chart shows the monthly maximum UV Index (UVI) for General Santos 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 General Santos typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141517161413141415141312
Data source: General Santos 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 General Santos

As September rolls in, General Santos, Philippines, continues to bask in a warm embrace of sunshine, recording an impressive 272 hours of bright daylight. This figure slightly dips from August's peak of 292 hours, yet remains comfortably above the mid-year average. Notably, the sunshine hours show a consistent pattern: January starts the year with 220 hours, gradually climbing to a high of 299 hours in March before settling into a more stable rhythm from April through September. This trend highlights a rewarding transition from the cooler months into a vibrant tropical atmosphere, making it an ideal time for outdoor activities and exploration. As the year progresses, the sun's presence remains steadfast, ensuring that the charm of General Santos is illuminated throughout the seasons.

Monthly Sunshine Duration in General Santos: September Highlighted

The September sunshine duration represents the total number of hours General Santos 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.
JanFebMarAprMayJunJulAugSepOctNovDec220h274h299h297h287h277h279h292h272h277h271h279h
Data source: General Santos September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in General Santos During September

In General Santos, Philippines, the likelihood of sunny weather in September appears less favorable, matching the low of 12% chance of sunshine. This trend reflects the overall dip in sunny days as the year transitions from the dry conditions of the earlier months to the wetter season. Interestingly, this marks a significant decrease compared to the preceding months, such as August, which enjoys a healthier 22% chance of sunshine. As the year progresses, the months of October through December gradually see a slight uptick in sunny days, with 14% to 15% chances, suggesting that while September might be cloudier, a glimmer of sun is still just around the corner.

Percentage of Sunny Days in September in General Santos

The chart illustrates the percentage of sunny days in General Santos 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 General Santos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec12%23%24%22%13%22%21%22%12%14%15%15%
Data source: General Santos September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in General Santos in September

In General Santos, Philippines, September marks the continuation of a consistent pattern in daylight duration, where residents enjoy approximately 12 hours of daylight. This steady illumination reflects a broader trend observed from March through to September, showcasing an extended period of balanced light that enhances daily activities and outdoor adventures. As the year progresses towards October, daylight begins to taper off, returning to the shorter durations typical in the closing months. This rhythm of light not only highlights the tropical climate of General Santos but also fosters a vibrant lifestyle, with the warmth of the sun inviting both locals and visitors to explore the region’s natural beauty throughout the summer months.

Average Daylight Hours in General Santos for September

The chart illustrates the variation in daylight duration in General Santos throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 48m11h 55m12h 4m12h 14m12h 22m12h 26m12h 24m12h 17m12h 7m11h 58m11h 50m11h 46m
Data source: General Santos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in General Santos

In September, General Santos experiences a gentle breath of wind, with an average speed of 1.4 m/s (approximately 3 mph). This reflects a slight decrease from the preceding months but aligns with the overall calmness typical for this region during the transition into the latter part of the year. From January through August, wind speeds varied only modestly, peaking in July at 1.7 m/s (4 mph) before tapering off in September. The consistent range of wind throughout the year underscores the region's tranquil climate, making it a delightful destination for those seeking a serene environment. As the winds softly intertwine with the vibrant landscapes, visitors can truly appreciate the charming ambiance that characterizes General Santos in this time of year.

Average September Wind Speed in General Santos

The chart displays monthly wind speed patterns in General Santos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.41.61.61.51.31.71.31.4 m/s1.51.31.4
Data source: General Santos September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in General Santos Compares to Other Months

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

In comparing the weather of September and January, we find that both months offer warm temperatures, with minimums around 20-21°C (69-71°F) and maximums peaking at 32°C (90°F). However, September tends to be slightly wetter, receiving an average of 232 mm (9.1 in) of precipitation over 25 days, whereas January has lesser rainfall at 204 mm (8.0 in) across 19 days. Humidity levels are quite similar, with September at 80% and January at 82%, contributing to the tropical feel of both months. For a closer look at January's climate, check out General Santos weather in January.

In September, the weather typically features warm temperatures, with a minimum of 21°C (71°F), an average of 26°C (79°F), and a maximum of 32°C (90°F). The month is characterized by significant rainfall, recording 232 mm (9.1 in) over 25 days, alongside a humidity level of 80%. In contrast, February offers slightly cooler conditions, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 33°C (92°F), while maintaining the same average of 26°C (79°F). However, February experiences less precipitation, totaling 131 mm (5.2 in) over 16 days and a higher humidity level of 87%. For a more detailed look at the February weather, check out General Santos weather in February.

In September, the weather features warm temperatures with a minimum of 21°C (71°F) and a maximum of 32°C (90°F), averaging around 26°C (79°F). The month is characterized by significant rainfall, accumulating 232 mm (9.1 in) over 25 days, accompanied by high humidity levels at 80%. In contrast, March experiences a slightly lower minimum temperature of 20°C (68°F) and a higher maximum of 34°C (94°F), with similar average temperatures of 26°C (79°F). Precipitation in March is somewhat less at 201 mm (7.9 in) over 20 days, but humidity is higher at 87%. For more details, you can check General Santos weather in March.

September and April exhibit similar warm temperatures, with September averaging around 26°C (79°F) and April slightly warmer at 27°C (80°F). Both months feature a minimum temperature of 21°C (70°F), though April reaches a higher maximum of 34°C (93°F) compared to September's 32°C (90°F). Precipitation levels are comparable as well, with September experiencing 232 mm (9.1 in) over 25 days and April receiving slightly less at 228 mm (9.0 in) over 21 days. Additionally, humidity levels are slightly higher in April at 83%, compared to September's 80%. For more detailed insights, visit General Santos weather in April.

In comparing the weather of September and May, both months exhibit warm temperatures, with September experiencing a minimum of 21°C (71°F) and an average of 26°C (79°F), while May has slightly higher temperatures, starting at a minimum of 22°C (71°F) and averaging 27°C (80°F). May tends to be a bit warmer overall, with a maximum temperature reaching 33°C (93°F) compared to September's 32°C (90°F). However, May also brings more precipitation, totaling 390 mm (15.3 in) across 29 days, whereas September has 232 mm (9.1 in) over 25 days. Humidity levels are relatively high in both months, with September at 80% and May slightly lower at 77%. For a more detailed look at May weather, you can check General Santos weather in May.

In comparing the weather of September and June, both months exhibit similar average temperatures, with September averaging 26°C (79°F) and June also maintaining the same average. However, September has a slightly lower minimum temperature of 21°C (71°F) compared to June's 22°C (71°F). When it comes to precipitation, June is notably wetter, receiving a total of 345 mm (13.6 in) over 29 days, while September records 232 mm (9.1 in) across 25 days, indicating a decrease in rainfall. Additionally, humidity levels are comparable, with September at 80% and June slightly lower at 77%. For more detailed information, you can check out General Santos weather in June.

In comparing the weather between September and July, we see that both months feature similar average temperatures, with September showing a minimum of 21°C (71°F) and a maximum of 32°C (90°F), while July has a minimum of 22°C (71°F) and a maximum of 32°C (89°F). However, September is slightly wetter, receiving 232 mm (9.1 in) of precipitation spread over 25 days compared to July's 277 mm (10.9 in) across 26 days. Humidity remains high in both months, with September at 80% and July slightly lower at 77%. For a detailed look at July's weather, you can visit General Santos weather in July.

In comparison to August, September experiences similar temperature ranges, with both months having a minimum of 21°C (70°F), an average of 26°C (78°F), and a maximum of 32°C (90°F). However, September tends to be slightly wetter, recording 232 mm (9.1 in) of precipitation over 25 days, compared to August's 257 mm (10.1 in) over 27 days. Humidity also rises slightly in September to 80%, making it feel a bit more muggy than in August, which has a humidity level of 78%. For more details on the weather in August, you can visit General Santos weather in August.

In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). The month sees significant rainfall, totaling 232 mm (9.1 in) over 25 days, and humidity levels are relatively high at 80%. In contrast, October maintains similar temperature ranges with a minimum of 21°C (71°F) and a maximum of 32°C (91°F), but the average remains steady at 26°C (79°F). However, October experiences increased rainfall, accumulating 306 mm (12.0 in) spread over 28 days, while humidity decreases slightly to 77%. For a more detailed look at the weather patterns, visit General Santos weather in October.

In September, the weather typically features minimum temperatures around 21°C (71°F), an average of 26°C (79°F), and maximums reaching 32°C (90°F), with a high humidity of 80%. This month experiences significant rainfall, totaling 232 mm (9.1 in) across approximately 25 days. In contrast, November exhibits a similar minimum temperature of 21°C (71°F) and an average of 26°C (79°F), but the maximum temperature slightly increases to 33°C (91°F). Additionally, November sees an increase in precipitation to 240 mm (9.5 in), also over about 25 days, though humidity decreases slightly to 76%. For more details, you can check General Santos weather in November.

In both September and December, the weather remains fairly consistent in terms of temperature, with minimums around 21°C (71°F), averages at 26°C (79°F), and maximums reaching 32°C (90°F). However, while September experiences slightly more precipitation at 232 mm (9.1 in) over 25 days, December sees a marginally lower total of 227 mm (8.9 in) with the same number of rainy days. Additionally, December offers a bit less humidity at 78% compared to September's 80%. For more detailed insights, check out General Santos weather in December.

Compare General Santos's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in General Santos

September in General Santos brings a notable shift in weather dynamics, characterized by higher humidity and consistent rainfall. As the region transitions into the wet season, unexpected downpours become commonplace, leading to more overcast days and a rich, green landscape. Temperatures remain warm, yet the combination of elevated precipitation and humidity often creates a more muggy atmosphere compared to earlier months. This blend of warmth and moisture not only enhances the vibrant local flora but also sets the stage for dynamic weather patterns that differ from the drier, sunnier days of preceding months. For more insights into the climate specifics, visit General Santos Climate.