Last updated: August 27, 2025
September in Bulacan, Philippines is characterized by a warm and humid climate, with average temperatures hovering around 27°C (81°F). Daytime highs can reach up to 35°C (96°F), while night temperatures provide some relief, dropping to a minimum of 23°C (73°F). This month sees substantial rainfall, with a total precipitation of 163 mm (6.4 in) over approximately 22 days, creating a lush environment yet necessitating precautions for occasional downpours. The 85% humidity adds to the tropical feel, making it essential for residents and visitors to stay hydrated and prepared for changing weather conditions.
In September, Bulacan, Philippines, experiences a warm embrace of late summer vibes, with temperatures reflecting a consistent trend throughout the month. The minimum temperature hovers around 23°C (73°F), while the average remains steady at 27°C (81°F), ensuring a comfortable climate for outdoor activities. As the heat peaks, the maximum temperature can reach up to 35°C (96°F), aligning with the upward trend seen since April. This month marks a transition as the region prepares for the upcoming rainy season, but still offers plenty of sunny days, making it an ideal time for both locals and tourists to enjoy Bulacan’s vibrant landscapes.
September in Bulacan, Philippines, typically signals a transition into heavier rainfall as the wet season progresses. With an average precipitation of 163 mm (6.4 in) over 22 days, this month showcases consistent moisture, contributing to the lush greenery characteristic of the region. This amount is just slightly below August's 171 mm (6.7 in), indicating a sustained pattern of rainy days as the monsoon influence continues. As the month closes, the average rainfall shifts upwards again in October, suggesting that September serves as a crucial bridge in the region's rain cycle, effectively nourishing the land and preparing it for the increased precipitation that follows. This rhythmic pattern not only supports local agriculture but also illustrates the dynamic weather system that defines Bulacan’s climate throughout the year.
In September, humidity levels in Bulacan, Philippines stabilize at around 85%, marking a slight dip from the higher figures earlier in the year. Starting with an average of 90% in January and peaking at 92% in February, the region experiences gradually decreasing humidity as the year progresses. The trend continues through the summer months, where humidity levels hover around the low 80s before bouncing back slightly in September. As the rainy season approaches, this modest uptick hints at the impending moisture that heralds the change in weather patterns, while also providing a comfortable respite from the preceding heat. Overall, September's humidity reflects the region's tropical climate, showcasing a blend of warmth tempered by the lingering monsoonal influences.
In September, Bulacan, Philippines experiences a UV Index of 15, maintaining its classification as extreme. This consistency continues from the previous month, illustrating a trend of heightened UV exposure during the year's latter half. Notably, the burn time remains a brief 10 minutes, underscoring the importance of sun protection. This recurring pattern throughout the year, where extreme levels dominate from January to September, suggests that residents and visitors alike should stay vigilant against harmful UV rays. For more insights, check out the detailed Bulacan UV Index.
UV Risk Categories
As the year progresses, September in Bulacan, Philippines continues to bask in the warmth of sunshine, boasting 278 hours of bright daylight. This marks a notable consistency as the month sits comfortably between the lively summer peaks of April and May, each exceeding 300 hours. With a slight dip from the vibrant summer months, September's sunshine hours still reflect a resilient summer vibe, echoing the steady warmth felt throughout the preceding months. Following the trend seen from June to August, where sunshine is abundant, September maintains this charm, hinting at the beautiful transition into the cooler months ahead. Overall, the sunshine trend in Bulacan suggests a climate that embraces both vibrant summers and a gradual shift towards milder weather.
When considering the likelihood of sunny weather in September in Bulacan, Philippines, it’s noteworthy that the chance of clear skies stands at 14%, which mirrors the lower probabilities seen earlier in the year. As spring transitions into summer, the chances of sunshine peak around March at 27%, but they decline sharply in May before slowly recovering through the middle of the year. By September, the weather remains intertwined with the rainy season, resulting in a significantly reduced opportunity for sunshine compared to the earlier months. Thus, while a sunny day in September can still be enjoyed, it's best to prepare for the potential of overcast skies and rain.
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 arrives in Bulacan, Philippines, the winds maintain a gentle touch, averaging 1.4 m/s (3 mph). This slight breeze is part of a broader trend observed throughout the year, where wind speeds tend to fluctuate modestly. Interestingly, the months leading up to September showcase a consistent pattern, with summer's peak in wind speed during the earlier months, particularly in January through July, where speeds reach up to 1.8 m/s (4 mph). However, as the year transitions towards the end, winds tend to lose their vigor, matching September's calmness in October and November. This tranquil wind scenario sets a serene backdrop for the changing seasons, as the region braces for the cooler months ahead.
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 is characterized by higher maximum temperatures, reaching up to 35°C (96°F), with an average temperature of 27°C (81°F). The month experiences significant rainfall, totaling 163 mm (6.4 in) over 22 days, accompanied by high humidity at 85%. In contrast, January sees slightly cooler conditions, with maximum temperatures peaking at 32°C (90°F) and an average of 26°C (79°F). The precipitation levels are similar, at 161 mm (6.3 in) across 18 days, but humidity rises to 90%. For more detailed information, check out Bulacan weather in January.
When comparing the weather in September and February, September typically experiences warmer temperatures, with an average of 27°C (81°F) and highs reaching up to 35°C (96°F). In contrast, February offers a slightly cooler climate, with average temperatures of 26°C (79°F) and maximums of 34°C (94°F). While September sees significantly higher precipitation at 163 mm (6.4 in) over 22 days, February's rainfall is more moderate at 89 mm (3.5 in) across 14 days. Additionally, February tends to have higher humidity levels at 92%, compared to September's 85%. For a more detailed look, you can visit Bulacan weather in February.
In September, the weather features slightly higher temperatures, with daily averages around 27°C (81°F) and maximums reaching up to 35°C (96°F). However, this month is characterized by significant rainfall, with 163 mm (6.4 in) of precipitation over 22 days and a humidity level of 85%. In contrast, March presents comparable average temperatures at 27°C (80°F) and maximums hitting 35°C (94°F), but it experiences less rainfall, totaling 136 mm (5.3 in) over just 14 days, along with a higher humidity level of 90%. For more details on weather specifics during March, visit Bulacan weather in March.
In comparing the weather of September and April, both months experience similar temperature ranges, with September recording a minimum of 23°C (73°F) and an average of 27°C (81°F), while April has a slightly lower minimum at 22°C (72°F), maintaining the same average. However, September tends to be wetter, with a higher precipitation of 163 mm (6.4 in) over 22 days, compared to April's 113 mm (4.4 in) across 16 days. Humidity levels are also slightly elevated in April at 87%, compared to September's 85%. To explore more about April conditions, visit Bulacan weather in April.
In comparing the weather of September and May, both months exhibit similar temperature patterns, with minimums around 23°C (73°F), averages of 27°C (81°F), and maximums reaching up to 35°C (96°F). However, May tends to be wetter, receiving 209 mm (8.2 in) of rainfall over 27 days, compared to September's 163 mm (6.4 in) across 22 days. The humidity levels are fairly comparable, with September at 85% and May slightly lower at 83%. For more details on the specific weather conditions in May, you can check Bulacan weather in May.
In comparing the weather of September and June, both months exhibit similar minimum and average temperatures, with lows around 23°C (73°F) and averages at 27°C (81°F). However, September experiences higher maximum temperatures of up to 35°C (96°F) compared to June's peak of 33°C (92°F). Additionally, September sees significantly less precipitation, with 163 mm (6.4 in) over 22 days, while June has a higher total of 214 mm (8.4 in) across 28 days. Humidity levels are relatively comparable, at 85% for September and 83% for June. For more details on June weather specifics, you can check Bulacan weather in June.
When comparing the weather in September and July, we see some notable similarities and differences. Both months feature a minimum temperature of around 23°C (73°F), with average temperatures also holding steady at 27°C (81°F). However, July has a slightly lower maximum temperature of 33°C (92°F) compared to September's peak of 35°C (96°F). Additionally, September experiences more precipitation, totaling 163 mm (6.4 in) over 22 days, while July has 206 mm (8.1 in) of rainfall across 24 days. Humidity levels are higher in September at 85%, compared to July's 82%. For a more detailed look at the July climate, you can refer to Bulacan weather in July.
In comparing the weather of September to August, both months exhibit similar temperature ranges, with September holding a slightly warmer maximum temperature of 35°C (96°F) compared to August's 34°C (93°F). The average temperatures remain consistent at 27°C (81°F) for both months. However, September experiences higher precipitation, receiving 163 mm (6.4 in) over 22 days, while August sees a total of 171 mm (6.7 in) over 24 days. Interestingly, September has a slightly higher humidity level at 85%, compared to August's 83%. For more details on August weather specifically, you can visit Bulacan weather in August.
In September, the weather is characterized by warm temperatures, with a minimum of 23°C (73°F), an average of 27°C (81°F), and a maximum reaching 35°C (96°F). The month sees significant rainfall, totaling 163 mm (6.4 in) over 22 days, accompanied by high humidity levels of 85%. In contrast, October maintains a similar temperature range, also starting at a minimum of 23°C (74°F) and averaging 27°C (81°F), but has a slightly cooler maximum of 33°C (93°F). Precipitation increases in October, with 214 mm (8.4 in) spread over 25 days, while humidity decreases slightly to 82%. For a detailed look at the weather in October, you can check Bulacan weather in October.
September and November exhibit similar temperature patterns, with both months averaging around 27°C (81°F) and experiencing minimum temperatures of 23°C (73-74°F). However, September tends to be slightly hotter, reaching a maximum of 35°C (96°F) compared to November's peak of 34°C (93°F). In terms of precipitation, September is wetter, receiving 163 mm (6.4 in) over 22 days, whereas November has 149 mm (5.9 in) over 23 days. Both months maintain high humidity levels, but September is a bit more humid at 85%, compared to November's 83%. For more details on what to expect during November, you can check Bulacan weather in November.
In September, temperatures range from a minimum of 23°C (73°F) to a maximum of 35°C (96°F), with an average of 27°C (81°F). The month sees significant precipitation, with 163 mm (6.4 in) falling over 22 days, contributing to high humidity levels of 85%. In contrast, December experiences similar temperature patterns, maintaining a minimum of 23°C (73°F), an average of 27°C (81°F), and a maximum of 35°C (95°F). However, it has slightly less rainfall, totaling 139 mm (5.5 in) over 20 days, and a marginally higher humidity of 87%. For more details, visit Bulacan weather in December.
As September unfolds in Bulacan, the weather brings a unique shift compared to the rest of the year. With an average temperature hovering around a comfortable 27°C (81°F), it marks a transition towards the cooler months. However, humidity levels soar to about 85%, adding a notable stickiness to the air. Rainfall is also prominent, with 22 days of precipitation contributing to a significant accumulation of 163 mm (6.4 in). This makes September one of the wetter months, creating a distinctively lush landscape. For a deeper understanding of this region's climatic patterns, visit Bulacan Climate.