Last updated: August 27, 2025
In Calamba, Philippines, May brings a blend of warmth and moisture, characterized by a maximum temperature reaching 34°C (94°F) and an average of 28°C (83°F). The evenings cool slightly to a minimum of 25°C (77°F), providing some relief. However, this month is also marked by significant rainfall, with precipitation totaling 142 mm (5.6 in) over 18 days. The humidity level sits at a notable 76%, creating a muggy atmosphere that is typical of tropical climates during this time of year. Residents and visitors alike should prepare for both sun-soaked days and potential showers as they enjoy the vibrant landscapes of Calamba.
In Calamba, Philippines, May marks the peak of warmth as temperatures rise steadily, showcasing a minimum of 25°C (77°F) and climbing to an impressive maximum of 34°C (94°F). This month brings an inviting average temperature of 28°C (83°F), setting the stage for vibrant days filled with sunshine and outdoor activities. Compared to the preceding months, May transitions from the warmer April (which had a maximum of 33°C) to even hotter June, highlighting a steady upward trend in temperatures as summer approaches. With humidity in full effect, the balmy weather of May invites both locals and visitors to enjoy the lush scenery and cultural festivities that flourish during this vibrant time of year.
In May, Calamba experiences a significant uptick in precipitation, with an impressive 142 mm (5.6 in) of rain over 18 days. This marks a noticeable increase compared to the preceding months, illustrating a transition into the peak of the rainy season. While January through April see relatively modest rainfall, May signals a shift as the region braces for heavier downpours in the coming months, particularly June and July when average precipitation soars. The trend is clear: May serves as a precursor to a much more humid and wet climate, underscoring its importance in the annual weather cycle for Calamba.
In Calamba, Philippines, the month of May shows a notable return to the 76% humidity level, mirroring January's moisture levels and indicating that the wet season is just around the corner. As spring transitions into summer, this uptick in humidity suggests a looming shift in weather patterns, preparing residents for the sweltering months ahead. Following May, humidity levels soar, peaking in the middle of the year at 88-89% from July through September, highlighting a clear trend of increasing moisture that envelops the region. This cyclical pattern underscores the tropical climate's characteristic characteristics, where higher humidity levels are a common theme as the year progresses.
In May, the UV Index in Calamba, Philippines, remains a striking 13, categorizing it as extreme with a rapid burn time of just 10 minutes. This figure reflects a slight dip from the peak of 15 observed in March and April, yet it remains significantly high as the region transitions into the wetter months. Notably, the UV Index stays consistently high throughout the early part of the year, with extreme categories dominating January to May. As we approach June, the index rises again to 14, emphasizing the need for continued sun safety measures. To explore more about UV levels and their implications, check out Calamba UV Index.
UV Risk Categories
May brings a delightful contrast to the year in Calamba, Philippines, boasting 323 hours of glorious sunshine. This notable increase not only marks it as the sunniest month so far but also reflects a trend of rising solar hours as the dry season peaks. Following a strong performance in April with 312 hours, May shines even brighter, illustrating a consistent ascent from the early months of the year. The sunshine hours steadily climb from 232 in January to the vibrant spring peak, before tapering slightly in June to 300 hours. This pattern showcases not only the beauty of May’s warmth but also the transition into a season filled with outdoor adventures. As the sun fuels both nature and spirits, Calamba’s May undoubtedly stands out as a time of basking in brilliance.
In Calamba, Philippines, May presents a solid 45% chance of sunny weather, maintaining levels that are consistent with April. This stability in sunny days indicates a transitional period after the earlier months, which experience a gradual increase in sunshine, peaking noticeably during March. However, as the region shifts toward the rainy season in June, the likelihood of sunshine diminishes significantly, plummeting to just 20%. As such, May is an enticing opportunity for sun-seekers, offering a window of pleasant weather before the monsoon rains take over. With nearly half the days basking in sunlight, it’s an ideal time to enjoy outdoor activities while the warmth lingers.
In Calamba, Philippines, the daylight duration experiences a captivating rhythm throughout the year. Beginning with 11 hours in January and February, the days gradually stretch as spring approaches, with 12 hours being the standard from March through August. May, nestled comfortably among these months, enjoys the same generous 12-hour daylight as its neighboring months, inviting outdoor activities and vibrant experiences. As the year progresses into fall, daylight begins to wane again, dropping back to 11 hours in October and returning to its earlier state for the remainder of the year. This pattern reflects a gentle ebb and flow, offering a sense of continuity and connection to the changing seasons.
May in Calamba, Philippines, experiences a subtle shift in wind dynamics, with an average speed of 2.9 m/s (6 mph). This marks a slight increase from April’s calmer 2.8 m/s (6 mph), indicating the onset of milder breezes as the month unfolds. Notably, winds dip to their lowest in June, highlighting a seasonal trend where the weather becomes more still as the region approaches the rainy months. Following May, wind speeds tend to rise again in July, reaching 3.2 m/s (7 mph), suggesting that the months ahead may bring variations in weather conditions. This progression hints at a delicate balance of mild winds as Calamba transitions from the dry heat of summer to the wetter months, reflecting the broader climatic rhythm of the region.
Weather in Calamba varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Calamba, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present contrasting weather patterns. In May, temperatures reach a minimum of 25°C (77°F) and can peak at an average of 28°C (83°F) to a maximum of 34°C (94°F), reflecting the heat of late spring. Additionally, May experiences higher rainfall, with 142 mm (5.6 in) over 18 rainy days, while maintaining a consistent humidity level of 76%. In contrast, January tends to be slightly cooler, with temperatures ranging from a minimum of 22°C (72°F) to a maximum of 30°C (87°F) and less precipitation at 88 mm (3.4 in) over just 9 rainy days. The humidity remains the same at 76%, providing a more comfortable atmosphere compared to the balmy conditions of May. For a detailed look at January's weather, you can check Calamba weather in January.
In comparing the weather of May and February, it’s evident that May is considerably warmer and more humid. With minimum temperatures around 25°C (77°F) and maxing out at 34°C (94°F), May averages a higher temperature of 28°C (83°F) compared to February's cooler average of 25°C (78°F). Additionally, May experiences significantly more rainfall, with 142 mm (5.6 in) falling over 18 days, whereas February sees only 35 mm (1.4 in) across just 5 days. Humidity levels also rise in May, reaching 76%, compared to February's 71%. For a detailed overview of February's weather, you can visit Calamba weather in February.
May experiences hotter temperatures compared to March, with a minimum of 25°C (77°F) and an average of 28°C (83°F), peaking at a high of 34°C (94°F). In contrast, March has slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 26°C (80°F), reaching a maximum of 32°C (90°F). Additionally, May sees significantly higher precipitation, totaling 142 mm (5.6 in) over 18 days, while March only records 24 mm (0.9 in) across 5 days. The humidity is also higher in May, at 76%, compared to March's 68%. For more details, check Calamba weather in March.
In comparing the weather between April and May, it is evident that May experiences warmer temperatures, with a minimum of 25°C (77°F) and an average of 28°C (83°F), compared to April's minimum of 23°C (73°F) and average of 27°C (82°F). Additionally, May sees increased humidity at 76%, slightly higher than April's 69%. Precipitation also plays a significant role; May is much wetter with 142 mm (5.6 in) of rain over 18 days, while April is relatively dry, receiving only 23 mm (0.9 in) over 6 days. For more detailed information on April weather patterns, you can check Calamba weather in April.
In comparing the weather of May and June, we see that both months maintain a similar average temperature of 28°C (83°F). However, May starts off slightly warmer with a minimum temperature of 25°C (77°F) compared to June's 24°C (76°F). Precipitation significantly increases in June, with 253 mm (10.0 in) of rain over 27 days, while May experiences 142 mm (5.6 in) across 18 days. The humidity also rises from 76% in May to 87% in June, making June feel notably more humid and wetter. For more detailed weather information, you can refer to Calamba weather in June.
May and July both showcase warm temperatures, but July experiences slightly cooler averages and higher humidity. In May, temperatures range from a minimum of 25°C (77°F) to a maximum of 34°C (94°F), with an average of 28°C (83°F) and a notable 142 mm (5.6 in) of precipitation over 18 days. Conversely, July sees a minimum of 24°C (76°F) and a maximum of 33°C (91°F), with an average temperature of 27°C (81°F). The rainfall in July is significantly higher at 397 mm (15.6 in), occurring over 30 days, contributing to the greater humidity levels of 88%. For more detailed information, visit Calamba weather in July.
May and August exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 25°C (77°F) to a maximum of 34°C (94°F), with an average of 28°C (83°F). The month experiences around 142 mm (5.6 in) of precipitation over 18 days, with humidity levels at 76%. In contrast, August features slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 33°C (91°F), averaging 27°C (81°F). However, it is considerably wetter, receiving 319 mm (12.5 in) of rainfall over 29 days, and boasting higher humidity at 89%. This makes August a more humid and rainy month compared to May. For more specific information, you can check Calamba weather in August.
In May, the weather tends to be warm with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 34°C (94°F), averaging around 28°C (83°F). While the humidity is quite high at 76%, the month experiences relatively moderate precipitation, totaling 142 mm (5.6 in) over 18 days.
In contrast, September brings slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (90°F), averaging 27°C (81°F). However, it is notably wetter, receiving around 318 mm (12.5 in) of rainfall over 26 days, and the humidity increases to 89%. For more specific details about the weather in this month, you can check Calamba weather in September.
In comparing the weather between May and October, we can see some notable differences. May typically sees slightly higher average temperatures, ranging from a minimum of 25°C (77°F) to a maximum of 34°C (94°F), while October's temperatures are a bit cooler, with a minimum of 24°C (75°F) and a maximum of 32°C (90°F). However, October tends to be wetter, receiving more precipitation at 226 mm (8.9 in) over 22 days compared to May's 142 mm (5.6 in) over 18 days. Additionally, October is generally more humid, with humidity levels reaching 86% compared to May's 76%. For a more detailed look at October's weather patterns, you can visit Calamba weather in October.
In comparing the weather of May and November, May tends to be slightly warmer with average temperatures ranging from 25°C (77°F) to a maximum of 34°C (94°F), while November maintains a milder range of 23°C (74°F) to 32°C (89°F). Both months experience significant precipitation, with May receiving 142 mm (5.6 in) over 18 days and November slightly higher at 158 mm (6.2 in) across 16 days. Additionally, November exhibits higher humidity at 89% compared to May's 76%, contributing to a more humid atmosphere during that time. For more details on November weather, you can refer to Calamba weather in November.
In May, the weather tends to be warmer with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 34°C (94°F) and an average of 28°C (83°F). Rainfall is notable during this month, with a total precipitation of 142 mm (5.6 in) spread over 18 days, accompanied by a humidity level of 76%. In contrast, December experiences slightly cooler temperatures, with a range from 23°C (73°F) to 31°C (88°F) and an average of 26°C (79°F). Although December has fewer rainy days at 15, it sees a higher total precipitation of 184 mm (7.2 in) and increased humidity at 86%. For more detailed information, check out Calamba weather in December.
As the temperatures rise in May, Calamba transforms into a tropical haven, offering a vibrant blend of warmth and humidity. With maximum temperatures reaching 34°C (94°F) and average conditions staying around 28°C (83°F), this month showcases a distinct contrast to the cooler and drier seasons prior. However, frequent rains—totaling about 142 mm (5.6 in) over 18 days—bring much-needed relief from the heat, creating a lush, green landscape. The high humidity, averaging 76%, intensifies the tropical feel, making May a unique time of year in Calamba. For those looking to explore more about the region's weather throughout the year, check out Calamba Climate.