Last updated: August 27, 2025
September in Bulacan, Philippines, brings a warm and humid climate, characterized by an average temperature of 28°C (82°F), reaching a maximum of 33°C (92°F) and dipping to a minimum of 24°C (76°F). This month is notably wet, with 427 mm (16.8 in) of rainfall spread across 28 days, resulting in a remarkable humidity level of 89%. The frequent precipitation contributes to the lush greenery of the region, but it also calls for preparedness for daily showers. Overall, September in Bulacan is a time of vibrant nature and tropical warmth.
In September, Bulacan, Philippines, experiences a pleasant transition into the latter part of the year, with temperatures typically ranging from a minimum of 24°C (76°F) to a comfortable maximum of 33°C (92°F). The average temperature hovers around 28°C (82°F), mirroring the warmth seen in the preceding months of July and August. While the temperatures slightly dip from the soaring peaks of May, which can reach up to 36°C (96°F), September maintains a mild atmosphere ideal for outdoor activities. This month not only marks a pivotal point in the shifting seasonal pattern but also paves the way for the cooler months ahead, as the humidity recedes and the overall climate becomes more inviting.
In September, Bulacan experiences a significant downpour, recording 427 mm (16.8 in) of precipitation over 28 days. This marks a slight decrease from the intense rainfall of July and August, yet it remains substantial, contributing to the region's lush landscape as the rainy season continues. The trend of increasing precipitation from the earlier months, such as January's mere 69 mm (2.7 in), underscores a shift towards wetter conditions that peak mid-year. With nearly a full month of rain, September showcases both the challenges and the vitality that abundant water brings to Bulacan, creating a vibrant environment even as it requires adaptations in daily life.
September marks a peak in humidity levels in Bulacan, Philippines, holding steady at 89%, which aligns with the region's trend of rising moisture through the wet season. As summer transitions into the rainy months, there is a noticeable increase from 68% in March to this month’s peak, reflecting the lush, tropical climate. The humidity remains consistently high from June through November, creating a muggy atmosphere typical of this period. This trend underscores the region's distinct wet and dry seasons, with September standing out as a month where the air feels particularly heavy, paving the way for the heavy rains that follow.
As the months progress in Bulacan, Philippines, the UV Index remains a significant concern for sun exposure, consistently classified as extreme throughout the year. In September, the UV Index stands at 14, maintaining the high levels seen during the summer months. This trend highlights a crucial aspect of the region's climate—intense sun exposure persists, with a burn time of only 10 minutes. Interestingly, while the UV Index slightly fluctuates each month—peaking at 15 in March and April—it rarely dips significantly, emphasizing the need for protective measures against harmful UV rays. For those looking to stay informed, additional details can be found at Bulacan UV Index.
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September in Bulacan, Philippines, witnesses a gentle decline in sunshine hours, with 254 hours of radiant daylight. This marks a slight dip from the vibrant summer months of May and June, which boast over 300 hours of sunshine, yet remains consistent with the rainy season transitioning into cooler temperatures. As the year progresses, sunny days in Bulacan typically peak during the hotter months, while September's brightness hint at a shift towards a more temperate autumn. It's a subtle reminder of the changing seasons – where sunshine still lingers, providing the warmth and light that define the charm of the Philippines.
In September in Bulacan, Philippines, the chances of enjoying sunny weather drop significantly to 19%, aligning with the transitional phase into the wet season. After the relatively bright months of May and April—where sunshine thrives at 53% and 46% respectively—August and September herald a notable decline. The rainy months of June and July witness the lowest sun visibility, which continues to linger into September. This trend underscores the variability of weather in Bulacan, where the arrival of autumn brings a refreshing shift, but makes sunny days less likely.
As September rolls into Bulacan, Philippines, residents can enjoy a generous 12 hours of daylight, which is consistent with the pattern observed from March through August. This steady duration reflects the region’s tropical climate, where daylight hours remain relatively stable throughout the year. While January and February see slightly less sunlight at 11 hours, the transition to abundant daylight begins in March. Following September, daylight begins to taper off again in October and returns to 11 hours as the year winds down, highlighting the cyclical nature of the seasons in this vibrant locale.
As September settles in Bulacan, Philippines, the gentle caress of the wind becomes noticeably lighter, averaging a calm 1.7 m/s (4 mph). This marks a significant drop from the breezier months of July and August, which saw average winds of 3.2 m/s (7 mph) and 2.3 m/s (5 mph), respectively. Interestingly, this trend of diminishing wind speeds continues into the later months, as October and November hover around 2.1 m/s (5 mph), before the winds pick up again in December with a return to 3.2 m/s (7 mph). Overall, September serves as a transitional period, heralding a more tranquil atmosphere before the winds strengthen once more, creating an ever-evolving cycle of breezy delight in the region.
Weather in Bulacan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bulacan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather tends to be much warmer and wetter compared to January. With minimum temperatures around 24°C (76°F) and averaging 28°C (82°F), September experiences high humidity at 89% and significant rainfall of 427 mm (16.8 in) spread over 28 days. In contrast, January brings a slightly cooler climate, with temperatures ranging from a minimum of 22°C (71°F) to an average of 26°C (80°F) and highs reaching 32°C (89°F). The precipitation drops dramatically to 69 mm (2.7 in) over just four days, and humidity levels decrease to 76%. For more details, you can refer to Bulacan weather in January.
In comparing the weather between September and February, it's evident that September is significantly wetter and more humid. With average temperatures ranging from a minimum of 24°C (76°F) to a maximum of 33°C (92°F), September experiences substantial rainfall of 427 mm (16.8 in) over 28 days, resulting in humidity levels peaking at 89%. In contrast, February presents a drier climate with only 20 mm (0.8 in) of rain over just 3 days, and slightly cooler temperatures, with a minimum of 21°C (71°F) and a maximum of 32°C (91°F). The lower humidity of 71% in February further distinguishes it from the more oppressive conditions of September. For more detailed insights, check out Bulacan weather in February.
In September, the weather is generally warm and humid, with minimum temperatures around 24°C (76°F) and average highs reaching up to 33°C (92°F). The month is characterized by significant rainfall, receiving approximately 427 mm (16.8 in) over 28 days, resulting in a high humidity level of 89%. In contrast, March is slightly cooler, with minimum temperatures similar at 23°C (73°F), but it can peak at a higher maximum of 34°C (94°F). Rainfall is markedly less in March, with only 18 mm (0.7 in) over just 5 days, and the humidity drops to a comfortable 68%. For a closer look at weather conditions in March, you can visit Bulacan weather in March.
In comparison to September, April features slightly warmer temperatures, with averages hitting around 29°C (85°F) compared to September's 28°C (82°F). April also experiences higher maximum temperatures, reaching up to 35°C (95°F), while September peaks at 33°C (92°F). However, the contrast in precipitation is stark; September is marked by heavy rainfall, accumulating 427 mm (16.8 in) over 28 days, whereas April sees much drier conditions with only 23 mm (0.9 in) over 7 days. Additionally, humidity levels in September are significantly higher at 89%, compared to a more comfortable 69% in April. For more detailed insights into April weather, you can visit Bulacan weather in April.
In comparing the weather patterns of September and May, we observe notable differences. September experiences slightly lower minimum temperatures, averaging 24°C (76°F), and a maximum of 33°C (92°F), with an average temperature of 28°C (82°F). It also sees a significant amount of rainfall, totaling 427 mm (16.8 in) over 28 days, contributing to a high humidity level of 89%. In contrast, May is warmer, starting at a minimum of 25°C (77°F) and reaching up to 36°C (96°F), with an average temperature of 30°C (86°F). Rainfall in May is considerably less, at 149 mm (5.9 in) over 19 days, and the humidity level is lower at 76%. For more information about the weather in May, you can visit Bulacan weather in May.
In comparing the weather patterns of September and June, both months experience warm temperatures, with September averaging around 28°C (82°F) and June slightly higher at 29°C (84°F). June often reaches a maximum temperature of 35°C (96°F), making it hotter than September's maximum of 33°C (92°F). Precipitation is more abundant in September, accumulating to 427 mm (16.8 in) over 28 days, compared to June's 313 mm (12.3 in) over 26 days. Humidity levels are also quite high in both months, with September at 89% and June at 87%. For a more detailed look at what to expect, check out Bulacan weather in June.
In comparing the weather patterns of September and July, both months showcase similar minimum temperatures of 24°C (76°F) and average temperatures of 28°C (82°F). However, July tends to be a bit hotter with a maximum temperature reaching 34°C (94°F), compared to September’s peak of 33°C (92°F). Precipitation levels are significantly higher in July, with 504 mm (19.8 in) over 30 days, compared to September's 427 mm (16.8 in) over 28 days. The humidity remains relatively consistent between the two months, with September at 89% and July at 88%. For a more detailed look at July's weather, check out Bulacan weather in July.
In comparing the weather patterns of September and August, we see some notable differences. Both months share a similar temperature range, with September experiencing a minimum of 24°C (76°F) and an average of 28°C (82°F), while August reaches a higher maximum of 35°C (95°F). Additionally, September sees a slight decrease in precipitation, with 427 mm (16.8 in) over 28 days, compared to August’s 464 mm (18.3 in) over 29 days. Despite these differences, humidity levels remain constant at a high 89% for both months. For more detailed information, you can check Bulacan weather in August.
September weather is characterized by consistently warm temperatures, with minimums around 24°C (76°F) and average maximums peaking at 33°C (92°F). This month experiences a high level of precipitation, totaling 427 mm (16.8 in) over 28 days, contributing to humidity levels that hover around 89%. In contrast, October maintains similar warm temperatures, with a min of 24°C (75°F) and an average maximum of 34°C (93°F). Rainfall decreases significantly to 286 mm (11.3 in) over 22 days, leading to slightly lower humidity levels at 86%. Overall, October offers warmer highs and drier conditions compared to September. For more detailed insights, check out Bulacan weather in October.
In comparing the weather between September and November, both months experience similar temperature ranges, with September showing a minimum of 24°C (76°F), an average of 28°C (82°F), and a maximum of 33°C (92°F), while November has slightly lower minimum and maximum temperatures, at 23°C (75°F) and 33°C (91°F). However, November is significantly drier, with only 132 mm (5.2 in) of precipitation over 13 days, compared to September's 427 mm (16.8 in) over 28 days. Humidity levels remain constant at 89% in both months, making the overall feel relatively similar. For more details on November weather, check out Bulacan weather in November.
In September, the weather is characterized by a warmer average temperature of around 28°C (82°F), with maximums reaching up to 33°C (92°F) and significant rainfall of 427 mm (16.8 in) over 28 days, coupled with high humidity at 89%. By contrast, December experiences slightly cooler temperatures, averaging 27°C (81°F) and peaking at 32°C (90°F). Additionally, precipitation decreases dramatically to 134 mm (5.3 in) over just 9 days, with humidity remaining high but slightly lower at 86%. Overall, December feels more comfortable and less rainy than September. For more insights, you can check Bulacan weather in December.
As September unfolds in Bulacan, the weather showcases a distinct transition, marked by high humidity and significant rainfall that sets it apart from the drier months of the year. With average temperatures hovering around 28°C, the warmth is palpable, but it is the nearly daily precipitation that transforms the landscape, saturating the region with over 427 mm of rain throughout the month. This continual moisture elevates the humidity to a sweltering 89%, creating a lush, vibrant environment that is both refreshing and challenging. For a deeper understanding of Bulacan's unique climate patterns, visit Bulacan Climate.