Last updated: August 27, 2025
In September, Calamba, Philippines experiences a warm and humid climate, with maximum temperatures reaching 32°C (89°F) and an average of 27°C (82°F). The minimum temperature hovers around 24°C (75°F), creating a comfortable yet tropical atmosphere. This month is marked by significant precipitation, totaling 165 mm (6.5 in), over 22 rainy days, contributing to a high humidity level of 84%. Visitors should be prepared for frequent showers amidst the warmth, making it essential to embrace the lush beauty that this wet season brings.
In September, Calamba, Philippines, experiences warm and inviting weather, with temperatures reflecting a transition into the latter weeks of the wet season. The minimum temperature hovers around a comfortable 24°C (75°F), while the average climbs to a pleasant 27°C (82°F). Daytime highs reach about 32°C (89°F), mirroring the peak heat of the preceding months, yet the consistent warmth indicates a balanced climate rather than the sweltering heat of summer. As the month progresses, these moderate temperatures create a perfect backdrop for enjoying the lush landscapes and vibrant cultural scenes that Calamba is renowned for, making September a delightful time for both locals and visitors alike.
September in Calamba, Philippines, marks a transitional period in the precipitation cycle, receiving an average of 165 mm (6.5 in) of rain over 22 days. This volume positions September as a moderate month compared to the deluges that precede it in June and July, which boast higher precipitation levels of 238 mm (9.4 in) and 212 mm (8.3 in) respectively. Interestingly, the latter part of the year often experiences heavier downpours, as evidenced by the sharp increase to 222 mm (8.7 in) in October and a peak of 264 mm (10.4 in) in December. As such, September serves as a brief respite before the rainy season intensifies again, offering a mix of sunny spells and refreshing showers that are characteristic of the Filipino climate during this time.
In September, Calamba, Philippines, experiences a slight increase in humidity, reaching 84%. This marks a subtle recovery from the lower humidity levels of July and August, which hovered around 80% and 81%, respectively. The month serves as a transition as the monsoon season begins to wane, yet it still retains the characteristic wetness of earlier months, with January through March showcasing even higher humidity levels at 90%. As the year progresses towards October, humidity dips again, settling at 81%, indicating a gradual shift towards drier conditions as the Philippines approaches the cooler months.
In September, Calamba, Philippines, continues to experience an extreme UV Index of 14, maintaining the trend seen throughout the year where values hover between 11 and 16. This month’s UV levels indicate that sun exposure can lead to skin burns in just 10 minutes, a consistent warning echoed across all months from January to August. While slightly lower than July and August's peak of 15, the UV intensity remains high, urging residents and visitors alike to take precautions when enjoying the outdoors. Whether you’re basking in the sun or engaging in outdoor activities, it's crucial to stay protected. For more detailed insights, check out Calamba UV Index.
UV Risk Categories
As September unfolds in Calamba, Philippines, the city basks in an average of 283 hours of sunshine, a delightful continuation of the predominantly sunny months preceding it. Following the peak brightness of May, which recorded an impressive 318 hours, the amount of sunshine slightly tapers off yet remains vibrant. The warmth lingers from the summer months, with September offering a comforting glow that invites both locals and visitors to indulge in the lush landscapes and outdoor adventures. Notably, the sunshine hours in September are closely aligned with August's 292 hours, showcasing a gradual yet charming descent into the cooler months ahead. This blend of light and warmth encapsulates the essence of a tropical paradise, marking September as a splendid transitional period.
In Calamba, Philippines, the likelihood of sunny weather throughout the year shows distinct patterns, especially as September approaches. With a mere 11% chance of sun, September ranks among the months with the least sunshine, paralleling January and October. This trend reveals a significant dip in sunny days as the rainy season sets in, following a peak in sunny weather earlier in the year during March. While the preceding months—particularly March and April—offer better opportunities to bask in the sun, September's overcast skies hint at the onset of wetter weather, making it less ideal for sunshine seekers. As the year winds down, sunshine lovers may want to look to the months with higher sun probabilities to enjoy the best of Calamba's tropical climate.
In Calamba, Philippines, the month of September embraces a steady pattern of 12 hours of daylight, continuing the trend established since March. This consistent daylight duration marks the peak of the year, reflecting a harmonious balance as the region transitions from the sweltering summer months into the cooler days of the approaching dry season. From January to February, daylight lingers at 11 hours, while a gradual increase unfolds from March to August, culminating in this delightful stability of light in September. As the year progresses, the daylight begins to wane once again in October, with a return to shorter hours. This shift beautifully encapsulates the tropical rhythm of Calamba, where the length of the day enriches the vibrant culture and outdoor lifestyles enjoyed by its residents.
As September rolls into Calamba, the breeze remains gentle, with an average wind speed of 1.7 m/s (4 mph), mirroring the previous two months. This consistency suggests a transition into the latter part of the year where winds tend to stabilize around this comfortable pace. Notably, this month maintains a slight uplift from the fluctuating patterns earlier in the year, with the calmest winds observed in January (1.5 m/s) and a peak in December (2.3 m/s). Overall, September's mild winds offer a soothing backdrop to the vibrant activities of the season, making it a delightful time to embrace the outdoors.
Weather in Calamba varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Calamba, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit distinct weather patterns, with September typically being slightly warmer. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), averaging 27°C (82°F) and accompanied by high humidity levels of 84%. This month sees considerable rainfall, with 165 mm (6.5 in) spread across 22 days. In contrast, January features temperatures that are a bit cooler, ranging from a minimum of 23°C (73°F) to a maximum of 30°C (87°F), averaging at 26°C (79°F). However, January experiences more significant precipitation, totaling 241 mm (9.5 in) over 23 days, coupled with even higher humidity at 90%. For additional details on January weather, refer to Calamba weather in January.
September and February display notable differences in weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), with an average of 27°C (82°F). The month experiences considerable rainfall, totaling 165 mm (6.5 in) over approximately 22 days, coupled with high humidity at 84%. In contrast, February sees slightly cooler temperatures, with a minimum of 21°C (71°F) and a maximum of 30°C (87°F), averaging 26°C (79°F). Although February has a higher total precipitation of 209 mm (8.2 in) spread over 20 days, it also features a higher humidity level at 90%. For more specific details, you can explore Calamba weather in February.
In comparing the weather of September and March, September tends to be slightly warmer with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), compared to March, which shows a minimum of 22°C (72°F) and a maximum of 31°C (88°F). Both months experience considerable precipitation, but September has a higher total of 165 mm (6.5 in) over 22 days, while March has 139 mm (5.5 in) over 19 days. Humidity is also notably higher in March at 90%, as opposed to 84% in September. For a more detailed look at weather patterns in March, you can visit Calamba weather in March.
In comparing the weather of September and April, both months feature similar temperature ranges, with September experiencing a minimum of 24°C (75°F) and an average of 27°C (82°F), while April's minimum is slightly lower at 23°C (73°F). Both months reach a maximum of 32°C (89°F). However, September sees more precipitation, with 165 mm (6.5 in) occurring over 22 days compared to April's 148 mm (5.8 in) over 17 days. Additionally, humidity levels are slightly higher in April at 88%, compared to 84% in September. For more detailed insights on the weather in April, you can check Calamba weather in April.
September and May share similar minimum temperatures, with both months starting at a comfortable 24°C (75°F). However, May typically boasts a slightly higher average temperature of 28°C (82°F) compared to September's 27°C (82°F), and reaches a maximum of 33°C (91°F), which is just a notch above September's 32°C (89°F). In terms of precipitation, May experiences more rainfall, totaling 178 mm (7.0 in) over 27 days, while September sees 165 mm (6.5 in) across 22 days. The humidity remains comparable in both months, hovering around 83% in May and 84% in September. For a more detailed look at the weather specifics in May, check Calamba weather in May.
When comparing the weather in September and June, we see some notable similarities and differences. Both months maintain a warm average temperature of around 27°C (82°F) with maximum temperatures peaking at 32°C (89°F). However, September tends to have slightly cooler minimum temperatures at 24°C (75°F) compared to June's 25°C (76°F). In terms of precipitation, June is wetter with a total of 238 mm (9.4 in) over 26 days, compared to September's 165 mm (6.5 in) over 22 days. Interestingly, while September has a higher humidity level at 84%, June is not far behind at 81%. For more information, you can check Calamba weather in June.
In comparing the weather between September and July, both months exhibit similar temperature ranges, with a minimum of 24°C (75°F), an average of 27°C (82°F), and a maximum of 32°C (89°F in September and 90°F in July). However, July tends to have more precipitation, averaging 212 mm (8.3 in) over 23 days, while September sees a decrease to 165 mm (6.5 in) across 22 days. Interestingly, September also experiences slightly higher humidity at 84% compared to July's 80%. This combination of temperature and humidity in September suggests a somewhat more oppressive feel despite the decreased rainfall. For more details on July weather, you can check Calamba weather in July.
In comparing the weather of September and August, we find that both months have similar temperature ranges, with September experiencing a minimum of 24°C (75°F) and a maximum of 32°C (89°F), while August maintains a slightly higher average temperature of 28°C (82°F) and a maximum of 32°C (90°F). Precipitation levels slightly increase in September, totaling 165 mm (6.5 in) compared to August's 152 mm (6.0 in), with both months recording rainfall on 22 days. Humidity is slightly higher in September at 84%, compared to August's 81%. For a more detailed look at August weather conditions, visit Calamba weather in August.
In September, the temperature ranges from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), with an average of 27°C (82°F). However, this month experiences significant rainfall, accumulating 165 mm (6.5 in) over 22 days, paired with high humidity levels at 84%. By October, the temperature remains similar, with a minimum of 24°C (75°F) and a maximum of 32°C (89°F), averaging around 27°C (81°F). Yet, the precipitation increases to 222 mm (8.7 in) over 27 days, implying a wetter month, while humidity slightly decreases to 81%. For more details about weather patterns, you can explore Calamba weather in October.
In September, the weather typically features a minimum temperature of 24°C (75°F) and averages around 27°C (82°F), peaking at a maximum of 32°C (89°F). The month is characterized by significant rainfall, with 165 mm (6.5 in) falling over 22 days at a humidity level of 84%. In contrast, November sees slightly cooler temperatures, with minimums around 21°C (71°F) and similar average temperatures of 27°C (81°F), reaching a maximum of 31°C (88°F). However, November experiences more rainfall, totaling 189 mm (7.4 in) across 25 days, while maintaining the same humidity level of 84%. For more specific insights on November weather, you can visit Calamba weather in November.
In September, the weather in Calamba is characterized by warm temperatures, with a minimum of 24°C (75°F), an average of 27°C (82°F), and a maximum of 32°C (89°F). However, it also experiences significant rainfall, with a total precipitation of 165 mm (6.5 in) across 22 days and humidity levels around 84%.
By December, the conditions remain quite similar in terms of temperature, with a minimum of 23°C (74°F), an average of 27°C (80°F), and a maximum of 31°C (88°F). Nonetheless, December tends to be wetter, featuring a higher total precipitation of 264 mm (10.4 in) over 28 days and slightly increased humidity at 88%. For more details, you can check the Calamba weather in December.
As September unfolds in Calamba, the weather takes on a distinct character compared to other months. With temperatures averaging a comfortable 27°C (82°F), the warm days are accompanied by high humidity levels of 84%, creating a tropical feel that can be quite appealing. However, this month also brings substantial rainfall, with 22 days of precipitation totaling 165 mm (6.5 in), a stark contrast to the drier spells experienced earlier in the year. This rainy season transforms the landscape into a lush green canvas, offering a vibrant backdrop for exploring the city. For a deeper insight into the overall climate trends and average conditions throughout the year, be sure to check out Calamba Climate.