Last updated: August 27, 2025
May in Bulacan, Philippines is characterized by warm temperatures that reach a maximum of 36°C (96°F), while the average hovers around 30°C (86°F) and dips to a minimum of 25°C (77°F). This month marks the onset of the rainy season, bringing substantial precipitation with an average of 149 mm (5.9 in) over 19 days. Humidity remains notably high at 76%, creating a tropical climate that is both vibrant and lush. Residents and visitors alike can expect a mix of sunny days intertwined with refreshing rain, making May a unique and dynamic time in Bulacan.
In May, Bulacan, Philippines, reaches the peak of its warm season, with temperatures exhibiting a notable rise. The month kicks off with a minimum of 25°C (77°F) and basks in a comfortably warm average of 30°C (86°F), climbing to a sweltering maximum of 36°C (96°F). This trend showcases a gradual increase from the preceding months, highlighting the transition into the hottest part of the year. With each passing week, residents and visitors alike can expect a blend of sunny days and occasionally balmy evenings, perfect for enjoying the vibrant local culture and outdoor activities. As the city embraces the warmth, it becomes a lively hub of summer experiences.
In May, Bulacan experiences a significant uptick in precipitation, with a whopping 149 mm (5.9 in) of rain falling over 19 days, marking a clear transition into the wet season. This surge in rainfall sets the stage for the heavy monsoon months ahead, as evidenced by June's staggering 313 mm (12.3 in). Compared to the preceding months—January through April, which saw much lower totals ranging from 18 mm to 69 mm and fewer rainy days—May's rainfall not only underscores a shift in weather patterns but also serves as a reminder of the region's tropical climate. As the rain continues to intensify, residents and nature alike prepare for the lush greenery and vibrant ecosystems that follow these downpours.
In May, Bulacan, Philippines experiences a notable uptick in humidity, reaching 76%, which is consistent with the levels seen in January but higher than previous months. As the region transitions from the hotter months of March and April, this resurgence of humidity signals the impending wet season. The trend is clear: humidity steadily rises as the year progresses, peaking dramatically in the summer months, with June seeing a significant increase to 87%. This gradual ascent from the drier conditions of early spring to the lush and damp atmosphere of the rainy season creates a palpable shift in the climate, significantly impacting the local environment and lifestyle.
In May, Bulacan, Philippines, continues to experience intense sunlight with a UV Index of 13, categorized as extreme. This consistent high level of UV exposure, persisting since January, underscores the importance of sun protection, as even brief periods of exposure—about 10 minutes—can lead to skin damage. Following the peak in March and April with a UV reading of 15, the index slightly decreased but remains a significant concern for outdoor activities. As we transition into the summer months, vigilance against harmful rays is crucial. For more detailed insights, explore the Bulacan UV Index.
UV Risk Categories
May brings a delightful peak of sunshine to Bulacan, Philippines, with 317 hours of radiant daylight, marking it as one of the sunniest months of the year. This burst of brightness follows a consistent upward trend from the beginning of the year, where January started with 232 hours and gradually rose through the spring months. April's 310 hours seamlessly transitions into May's sunny splendor. Interestingly, after May, the sunshine starts to taper off, declining to 292 hours in June and continuing downwards through the summer months. This pattern reflects the region’s tropical climate, offering a vibrant experience of warm and sunny days just before the onset of the rainy season.
In Bulacan, Philippines, May heralds a significant shift towards sunnier skies, boasting a 53% chance of sunshine. This uptick follows March's 51% and April's slight dip to 46%, indicating that as the dry season reaches its peak, residents and visitors alike can anticipate more bright days. As the country transitions into the rainy season, this sunny window becomes even more precious, especially when compared to the markedly lower probabilities of sun in the following months, with June plummeting to just 19%. Overall, May stands out as a delightful opportunity to enjoy the outdoors before the clouds roll in!
In Bulacan, Philippines, daylight duration experiences a rhythmic pattern throughout the year. The year begins with 11 hours of daylight in both January and February, gradually building to 12 hours as spring approaches in March. This consistent 12-hour stretch continues through the warmer months of April to August, offering ample sunlight for outdoor activities and gatherings. As the year progresses towards the latter half, daylight begins to wane again, tapering back to 11 hours by October, and remaining at this duration through the close of the year in December. This smooth transition from longer to shorter days highlights the tropical climate's minor variations, providing a predictable yet inviting environment for residents and visitors alike.
In Bulacan, Philippines, the May winds reveal a gentle embrace, with an average speed of 2.3 m/s (5 mph), a slight uptick from the preceding months. This subtle breeze transitions from the calmer April, hinting at the approaching rainy season. While May's wind speed remains modest, it marks the beginning of a gradual increase, as the region prepares for the stronger gusts that July and December will bring, each boasting speeds of 3.2 m/s (7 mph). Observing the overall trend, it's fascinating to note that the wind speeds fluctuate subtly throughout the year, with January and December being the most blustery months, highlighting a dynamic climate that harmonizes tranquility and vigor.
Weather in Bulacan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bulacan, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, it is evident that May is considerably warmer and wetter. May boasts average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 36°C (96°F), while January has cooler temperatures with a minimum of 22°C (71°F) and a maximum of 32°C (89°F). Additionally, May experiences much higher precipitation, totaling 149 mm (5.9 in) over 19 days, compared to January's 69 mm (2.7 in) over just 4 days. However, both months maintain a consistent humidity level of 76%. For more details, you can check Bulacan weather in January.
May is typically much warmer and wetter than February. While May sees average temperatures peaking at around 30°C (86°F) with maximums reaching up to 36°C (96°F), February's temperatures are milder, averaging 27°C (80°F) with a maximum of 32°C (91°F). May also experiences significantly higher precipitation, with 149 mm (5.9 in) over 19 days, in stark contrast to February's 20 mm (0.8 in) across just 3 days. Additionally, the humidity in May is notably higher at 76%, compared to February’s 71%. For more details, you can check out Bulacan weather in February.
When comparing the weather in May and March, it's clear that May tends to be warmer and wetter. May has a minimum temperature of 25°C (77°F) and averages around 30°C (86°F), peaking at a maximum of 36°C (96°F). In stark contrast, March starts with a lower minimum of 23°C (73°F) and an average of 28°C (83°F), reaching a maximum of 34°C (94°F). Additionally, May experiences significantly higher precipitation, with 149 mm (5.9 in) recorded over 19 days, while March only sees 18 mm (0.7 in) on about 5 days. The humidity level also rises in May to 76%, compared to 68% in March. For more details, you can check out Bulacan weather in March.
In comparing the weather patterns of April and May, we can observe several notable differences. May experiences higher temperatures, with a minimum of 25°C (77°F) and an average of 30°C (86°F), compared to April's minimum of 24°C (76°F) and average of 29°C (85°F). Additionally, May sees more extreme heat, with maximum temperatures reaching up to 36°C (96°F) versus April's maximum of 35°C (95°F).
One significant contrast is the precipitation; May records a substantial increase in rainfall, totaling 149 mm (5.9 in) over 19 days, while April only receives 23 mm (0.9 in) over 7 days. The humidity levels also rise in May, averaging 76% compared to April's 69%. For more detailed insights into April's weather, you can check Bulacan weather in April.
May and June weather exhibit some notable differences despite being consecutive months. In May, temperatures range from a minimum of 25°C (77°F) to a maximum of 36°C (96°F), with an average temperature of 30°C (86°F). Precipitation during May totals 149 mm (5.9 in) over 19 days, and humidity levels sit at 76%. In contrast, June sees slightly lower temperatures, with a minimum of 24°C (76°F) and a maximum of 35°C (96°F), averaging at 29°C (84°F). However, June is considerably wetter, with 313 mm (12.3 in) of rainfall across 26 days, and humidity rises to 87%. For a detailed overview of June's weather, visit Bulacan weather in June.
In comparing the weather of May and July, it is clear that both months experience warm temperatures, but with distinct differences in precipitation and humidity levels. May typically sees a minimum temperature of 25°C (77°F) and an average of 30°C (86°F), while July's temperatures are slightly lower, ranging from a minimum of 24°C (76°F) to an average of 28°C (82°F). However, July is significantly wetter, receiving 504 mm (19.8 in) of rainfall over 30 days, compared to May's 149 mm (5.9 in) across 19 days. Additionally, July boasts higher humidity levels at 88%, compared to May's 76%. This dramatic increase in rainfall and humidity makes July markedly more oppressive despite its slightly cooler temperatures. For more detailed information, you can check Bulacan weather in July.
In comparing the weather in May and August, it’s evident that August tends to be cooler and more humid. May experiences higher average temperatures, with a minimum of 25°C and a maximum of 36°C, while August ranges from a minimum of 24°C to a maximum of 35°C. However, August is significantly wetter, receiving 464 mm of precipitation over 29 days compared to May's 149 mm over 19 days. The humidity also peaks in August at 89%, compared to May’s 76%, creating a more oppressive environment. For more details on the specific weather conditions, check out Bulacan weather in August.
In comparing the weather of May and September, we see noticeable differences in temperature and precipitation patterns. May boasts higher temperatures, with a minimum of 25°C and an average of 30°C, while September’s average is cooler at 28°C. However, September experiences significantly more rainfall, accumulating 427 mm over 28 days compared to May's 149 mm over 19 days. Additionally, September's humidity is higher at 89%, compared to May's 76%. For more detailed insights, you can refer to Bulacan weather in September.
In comparing the weather of May and October, we see that May is generally hotter, with average temperatures reaching around 30°C (86°F), while October has a milder average of 28°C (83°F). However, October experiences significantly higher rainfall, with 286 mm (11.3 in) spread over 22 days, compared to May's 149 mm (5.9 in) over 19 days. Additionally, October has a higher humidity level at 86%, compared to May's 76%, making it feel more humid and sultry. For a detailed look at October's climate, you can visit Bulacan weather in October.
May and November showcase distinct weather patterns, reflecting their positions in the tropical season. May generally experiences higher temperatures than November, with averages around 30°C (86°F) and maximums peaking at 36°C (96°F). In contrast, November presents slightly cooler temperatures, averaging at 28°C (83°F) with a maximum of 33°C (91°F). Precipitation is prevalent in both months, with May receiving 149 mm (5.9 in) across 19 days, while November sees 132 mm (5.2 in) over 13 days. Notably, November has a higher humidity level at 89%, compared to May's 76%, which can create a more muggy feeling. For more details on November weather, check out Bulacan weather in November.
In May, the weather is considerably warmer, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 36°C (96°F) and an average of 30°C (86°F). The month experiences high humidity at 76% and sees significant rainfall, with 149 mm (5.9 in) of precipitation over 19 days. In contrast, December brings slightly cooler temperatures, with a minimum of 23°C (74°F) and a maximum of 32°C (90°F), averaging 27°C (81°F). The humidity increases to 86%, while precipitation is slightly lower at 134 mm (5.3 in) over just 9 days. For a more detailed look at the weather patterns in December, you can check out Bulacan weather in December.
May in Bulacan ushers in a distinct transition as temperatures soar compared to the cooler months, often peaking at an invigorating 36°C. With an average temperature around 30°C and a minimum of 25°C, the warmth becomes palpable, making this month feel significantly sultrier. Accompanied by high humidity levels of 76% and approximately 149 mm of rainfall over 19 days, May also marks the beginning of the rainy season, a contrast to the drier conditions in preceding months. This captivating juxtaposition of heat and moisture creates a lively atmosphere, inviting both residents and visitors to embrace the vibrant energy of Bulacan. For a deeper dive into seasonal variations, check out Bulacan Climate.