Last updated: August 27, 2025
In Iloilo, Philippines, September offers a tropical climate with a maximum temperature reaching 33°C (91°F) and an average of 27°C (81°F), making it a warm month for locals and visitors alike. However, the weather is marked by considerable humidity at 85%, creating a muggy atmosphere. Rainfall is a significant feature of this month, with an average precipitation of 320 mm (12.6 in) spread over 28 days, resulting in frequent showers. Those planning to explore Iloilo during September should come prepared for both warmth and the possibility of rain, embodying the vibrant yet unpredictable nature of the wet season.
In September, Iloilo, Philippines enjoys a warm climate with minimum temperatures around 23°C (74°F), creating a comfortable atmosphere for both locals and visitors. The average temperature hovers at 27°C (81°F), indicative of a pleasant tropical vibe. As the month progresses, daytime highs reach up to 33°C (91°F), reflecting the overall trend of rising temperatures leading into the latter part of the year. This slight uptick in warmth, compared to the previous months, positions September as a transitional period, setting the stage for the cooler temperatures of October while sustaining the summer-like feel that many relish. Whether exploring scenic landscapes or enjoying vibrant festivals, September's temperatures invite outdoor adventures in this beautiful region of the Philippines.
In September, Iloilo experiences a significant rainfall, with 320 mm (12.6 in) falling over approximately 28 days. This amount, while slightly lower than the previous month's peak of 335 mm, continues the trend of substantial precipitation characteristic of the wet season. The monthly rainfall underscores the region's transition from the intense downpours of August into the slightly less torrential yet still prominent showers of early fall. With an average of nearly a day of rain for every calendar day, September solidifies its reputation as a key month in Iloilo's climatological cycle, paving the way for the wetter months ahead as October approaches.
As September arrives in Iloilo, Philippines, residents and visitors can expect the humidity to peak at 85%, marking a notable increase compared to the preceding months. This trend reflects a gradual rise in humidity levels throughout the year, beginning at 76% in March and steadily building, with August at 83%. The transition into September ushers in a more humid atmosphere, which is not uncommon as the dry season approaches. Following this peak, a slight decline is observed in October, bringing humidity down to 80%. This pattern not only highlights the region's tropical climate but also sets the stage for a lush landscape in the months to come, as moisture levels remain high across the year.
In September, Iloilo, Philippines experiences a UV Index of 15, marking a slight decrease from the peak highs of April and March but still maintaining an extreme exposure category. This month, sun lovers should be cautious with a quick burn time of just 10 minutes, similar to the preceding months, which all showcased heightened UV levels. Overall, the trend from January to September reveals consistently high UV indices, underscoring the importance of sun protection throughout the year. To stay informed about the UV index and its implications, visit Iloilo UV Index.
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As summer wanes, September in Iloilo, Philippines brings a delightful curtain call of sunshine, with 257 hours basking in radiant daylight. This transition month showcases slightly less sunshine compared to the vibrant highs of May (with a peak of 315 hours) and June’s moderately warm days. The ebb in sunlight mirrors the gradual shift toward the cooler months, yet it still provides ample opportunity for outdoor adventures and explorations. Surprisingly, September is more luminous than the rainy preceding months of July and August, both clocking in at 277 hours. As the sun prepares to share its stage with the coming harvest season, the essence of September warmth continues to beckon locals and travelers alike.
September in Iloilo, Philippines, marks a notable dip in the likelihood of sunny weather, with only a 9% chance of clear skies. This trend follows a summer peak in March, where sunny days are more frequent, decreasing as the rainy season approaches. The consistently low percentages in the latter months, including September, suggest that travelers might encounter overcast skies and occasional showers rather than the bright, sunny days that characterize earlier months like March and April. As the year progresses, it becomes evident that September is one of the cloudier months, making it less ideal for those seeking sun-soaked adventures.
In September, Iloilo, Philippines enjoys a steady 12 hours of daylight, maintaining a trend that begins in March and continues through the summer months. This consistent daylight duration not only fosters a vibrant atmosphere for outdoor activities but also marks a transition towards the shorter days of October. The gradual shift from the longer daylight hours of the preceding months highlights Iloilo's tropical climate, creating an inviting backdrop for both locals and visitors alike. As the year progresses, daylight dwindles to around 11 hours by October, signaling the approach of the cooler, more subdued months ahead.
As September rolls into Iloilo, the winds whisper a gentle lull, with an average speed of just 2.4 m/s (5 mph), marking one of the calmest months of the year. Following the summer's breezier spells, where July and August hover around 4.2 m/s and 2.6 m/s respectively, September signals a shift towards tranquility. This decrease in wind speed contrasts sharply with the lively gusts of December, which can reach up to 5.6 m/s (12 mph). Observing the seasonal trends, it's clear that as the Philippines transitions from the sweltering heat of summer to the cooler, festive months, the winds soften, inviting residents and visitors alike to enjoy the serene beauty of the changing landscape.
Weather in Iloilo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Iloilo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of September and January, we see that both months feature warm temperatures, but September tends to be slightly hotter with average highs reaching 33°C (91°F) compared to January's 32°C (89°F). Additionally, September experiences significantly more rainfall, accumulating 320 mm (12.6 in) over 28 days, while January has only 124 mm (4.9 in) across 16 days. Humidity levels are relatively similar, hovering around 85% in September and 81% in January. For a detailed breakdown of January's weather, you can visit Iloilo weather in January.
September and February exhibit distinct weather patterns in terms of temperature, precipitation, and humidity. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (91°F), with an average of 27°C (81°F). This month sees significant rainfall, with a total of 320 mm (12.6 in) spread over 28 days, contributing to a high humidity of 85%. In contrast, February offers slightly cooler conditions, with temperatures varying from a minimum of 21°C (70°F) to a maximum of 32°C (89°F) and an average of 26°C (80°F). February experiences much less rain, receiving only 84 mm (3.3 in) over 12 days, and the humidity is lower at 78%. For a detailed look at the weather in February, visit Iloilo weather in February.
September and March exhibit distinct weather patterns despite their similar average temperatures. In September, the heat intensifies with minimum temperatures around 23°C and maximums reaching 33°C, accompanied by high humidity levels of 85% and significant rainfall totaling 320 mm over 28 days. In contrast, March features slightly cooler mornings with a minimum temperature of 22°C and peaks at 34°C, but it sees much less precipitation, with only 65 mm over 10 days and lower humidity at 76%. Overall, while both months can be warm, September tends to be wetter and more humid compared to the drier and more stable conditions often found in March. For more details, check out Iloilo weather in March.
September and April exhibit distinct weather patterns, with September being characterized by higher humidity and considerable rainfall. September's temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (91°F), accompanied by an average of 27°C (81°F). This month sees significant precipitation, with about 320 mm (12.6 in) spread over 28 days. In contrast, April offers warmer temperatures, reaching up to 36°C (97°F) and maintaining an average of 28°C (83°F), although it experiences much less rain at only 50 mm (2.0 in) over 11 days and lower humidity at 77%. For more detailed information, you can visit Iloilo weather in April.
September and May present contrasting weather patterns. September typically sees temperatures ranging from a minimum of 23°C (74°F) to a maximum of 33°C (91°F), with an average of 27°C (81°F). This month experiences significant rainfall, with 320 mm (12.6 in) of precipitation over 28 days, contributing to high humidity levels at 85%. In comparison, May features slightly warmer temperatures, with a minimum of 24°C (76°F) and a maximum of 36°C (96°F), averaging 29°C (84°F). However, May is drier, with only 130 mm (5.1 in) of rainfall over 24 days and lower humidity at 78%. For more details on the weather in May, you can visit Iloilo weather in May.
In September, the weather tends to be slightly cooler than in June, with average temperatures hovering around 27°C (81°F) compared to June's 28°C (83°F). However, September experiences more significant rainfall, with 320 mm (12.6 in) of precipitation spread over 28 days, while June receives 246 mm (9.7 in) during the same period. Humidity levels are also higher in September at 85%, compared to 80% in June, contributing to a muggy atmosphere. For a detailed look at June weather conditions, you can visit Iloilo weather in June.
In comparing the weather of September and July, both months show similar average temperatures around 27°C (81°F), with peak highs reaching 33°C (91°F). However, September experiences a slightly lower minimum temperature of 23°C (74°F) compared to July's 24°C (75°F). Precipitation levels are also comparable, with September receiving 320 mm (12.6 in) over 28 days, while July sees a marginally higher 323 mm (12.7 in) across 30 days. Additionally, September's humidity is higher at 85%, compared to July's 81%. For more detailed insights, you can check Iloilo weather in July.
In comparing the weather of September to that of August, we observe a slight decrease in the minimum temperature, with September averaging a minimum of 23°C (74°F) compared to August's 24°C (75°F). Both months maintain the same average and maximum temperatures of 27°C (81°F) and 33°C (91°F), respectively. However, September experiences slightly less rainfall, totaling 320 mm (12.6 in) over 28 days, while August sees 335 mm (13.2 in) over 30 days. Humidity levels also marginally increase in September to 85%, compared to 83% in August. For more detailed information on August weather patterns, you can refer to Iloilo weather in August.
September and October share similar temperature ranges, with both months experiencing a minimum of 23°C (74°F) and an average of 27°C (81°F). However, October sees a slight dip in maximum temperatures, reaching up to 32°C (90°F) compared to September’s 33°C (91°F). Precipitation levels also decrease in October, with 266 mm (10.5 in) falling over 27 days, while September receives 320 mm (12.6 in) over 28 days. Additionally, humidity lowers from 85% in September to 80% in October, making October slightly more comfortable. For more detailed information, you can check Iloilo weather in October.
In comparing the weather between September and November, both months exhibit a similar temperature range with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 32-33°C (90-91°F). However, September is notably wetter, experiencing 320 mm (12.6 in) of precipitation over 28 days, compared to November's 151 mm (6.0 in) over 22 days. Additionally, humidity levels are slightly higher in September at 85%, while November sees a marginally lower humidity of 83%. For more detailed information on November's climate, you can check out Iloilo weather in November.
In comparing the weather between September and December, both months show similar temperature patterns, with minimums around 23°C (73°F) to 24°C (74°F) and averages around 27°C (80°F to 81°F). However, December sees a slight decrease in maximum temperatures, averaging 32°C (90°F) compared to September's 33°C (91°F). Notably, September experiences much higher precipitation levels at 320 mm (12.6 in) over 28 days, while December has a significantly lower precipitation total of 171 mm (6.8 in) spread over 22 days. Humidity remains high in both months, with December slightly edging out at 86% compared to September's 85%. For more detailed insights on December weather, you can refer to Iloilo weather in December.
In September, Iloilo experiences a distinct weather pattern characterized by high humidity and frequent rainfall, setting it apart from other months. The continuous downpours contribute to an overall moisture-laden atmosphere, making the average temperature feel warmer despite maximums that can peak at 33°C. This month also sees a notable increase in precipitation days, often leading to a lush, vibrant landscape by the end of it. While the heat may be familiar, the typical tropical downpours and elevated humidity levels mark September as a unique transition into the later wet season. For a deeper look into how Iloilo's weather evolves throughout the year, visit Iloilo Climate.