Last updated: August 27, 2025
September in Santa Rosa, Philippines features a warm tropical climate characterized by a maximum temperature reaching 33°C (92°F) and an average of 27°C (81°F). With a minimum temperature of 23°C (74°F), the weather invites warmth and humidity, which averages a notable 89%. This month also brings substantial rainfall, totaling around 400 mm (15.8 in), with precipitation spread across 28 days. The lush ambiance and vibrant atmosphere mark September as a month of flourishing greenery and rich experiences in this bustling city.
In September, Santa Rosa, Philippines experiences a warm and inviting climate, with temperatures ranging from a comfortable 23°C (74°F) at night to a lively 33°C (92°F) during the day. The average temperature settles at around 27°C (81°F), making it one of the more consistent months of the year. Unlike the intensively hot months of April and May, where maximum temperatures soar to 34°C (94°F) and 36°C (97°F) respectively, September provides a slight reprieve yet retains the warmth characteristic of the region. This month marks a gentle transition as the rainy season approaches, often bringing refreshing breezes and occasional showers that add to the changing atmosphere. Overall, September is a delightful time to experience Santa Rosa's tropical charm.
September in Santa Rosa, Philippines, experiences significant rainfall, marking an essential transition in the wet season with an impressive 400 mm (15.8 in) of precipitation. This month showcases nearly 28 days of rain, closely following the intense July and August showers, which are some of the wettest in the calendar year. While there's a slight decrease from the torrential downpours seen in July (561 mm), September remains a formidable contender, underscoring the region's vulnerability to moisture-laden weather patterns. The consistent rainfall not only replenishes the lush landscapes but also sets the stage for the gradual tapering off of the monsoon, leading to a drier October. The cyclical nature of these precipitation trends highlights the dynamic climate Santa Rosa endures as it transitions through its vibrant wet season.
In September, humidity in Santa Rosa, Philippines reaches a robust 89%, continuing a trend of elevated moisture levels that begins in the warmer months. Following a gradual rise from 68% in March, the humidity spikes significantly during the summer, peaking between July and August. This pattern suggests a lush and tropical environment, with September maintaining that high humidity alongside October and November. As the year progresses, humidity slightly decreases but remains consistent at elevated levels, hinting at Santa Rosa's rich, verdant landscape throughout the rainy season.
In September, Santa Rosa, Philippines, experiences one of its peak UV Index levels at 14, reflecting an extreme exposure category, with a swift burn time of just 10 minutes. This trend of high UV exposure is consistent throughout the year, with similar levels recorded in March, April, August, and now September. As the year progresses, there's a notable pattern of persistently extreme UV levels, making it essential for residents and visitors alike to take precautions against sunburn. The UV Index remains a critical factor to consider, especially as we transition towards the end of the year, when it dips only slightly. To stay informed and safe, check the detailed report on the Santa Rosa UV Index.
UV Risk Categories
September in Santa Rosa boasts a delightful average of 254 sunshine hours, perfectly capturing the tail end of the vibrant summer season. While this marks a slight dip compared to the sun-drenched months of May and June, the brightness still lingers, providing ample opportunities for outdoor adventures and leisurely strolls. As the year progresses, a noticeable trend emerges: the sun's presence peaks in the late spring and early summer, gradually tapering as the onset of the rainy season approaches. Nonetheless, September remains a total treat for sun seekers, blending warm days with the allure of softer autumn light.
In Santa Rosa, Philippines, the likelihood of sunny weather sees a gradual decline as the year progresses, with September showcasing a modest 16% chance of sun. Following the peak sunny months of March through May, which boast probabilities of 47% to 45%, the sunshine gradually diminishes as the region transitions into its rainier season. Notably, July and August hit the lowest points with only 9% and 11% chances of sunshine, respectively. As the year winds down into October and November, the likelihood begins to rise again, but September remains a transitional month where sunshine takes a backseat to impending rainfall.
In Santa Rosa, Philippines, September is part of a notable pattern in daylight duration throughout the year. As the region transitions from the vibrant summer months into the lighter autumn period, September maintains a consistent 12 hours of daylight—a continuation of the trend observed since March. This stability is a hallmark of the local climate, where daylight hours peak at their fullest from March through September, offering lengthy evenings for outdoor pursuits and social gatherings. As October approaches, the daylight gradually diminishes to 11 hours, marking a gentle shift as the year progresses toward its close. This rhythmic ebb and flow of daylight not only shapes the daily life in Santa Rosa but also highlights the beauty of its tropical environment.
As September rolls into Santa Rosa, Philippines, the wind takes on a more tranquil character, with an average speed of just 2.0 m/s (4 mph). This gentle breeze marks a noticeable dip compared to the bustling winds of earlier months, such as January and July, which both boast average speeds of 3.6 m/s (8 mph) and 3.4 m/s (8 mph), respectively. The progressive shift from the cooler, more invigorating winds of winter to the softer currents of early autumn is palpable. With wind speeds decreasing consistently through the mid-year, September signals a time of relative calm, providing a serene backdrop that heralds the approach of the dry season. As we transition into October, the winds begin to pick up again, hinting that the seasonal cycle remains beautifully in motion.
Weather in Santa Rosa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santa Rosa, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. In September, temperatures tend to range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (81°F). This month is characterized by significant rainfall, receiving around 400 mm (15.8 in) over approximately 28 days, contributing to high humidity levels of 89%. In contrast, January offers a slightly cooler climate, with temperatures ranging from a low of 21°C (70°F) to a high of 31°C (88°F) and an average of 25°C (77°F). Precipitation drops significantly to 78 mm (3.1 in) over just 7 days, resulting in lower humidity at 76%. For a more detailed look at the January climate, you can explore Santa Rosa weather in January.
September and February showcase distinct weather patterns that highlight the transition from late summer to early spring. In September, the average temperature hovers around 27°C (81°F) with a maximum of 33°C (92°F), complemented by high humidity levels of 89%. This month experiences significant rainfall, with 400 mm (15.8 in) spread over 28 days, contributing to a lush environment. In contrast, February presents milder temperatures, with an average of 25°C (78°F) and a maximum of 32°C (89°F), but considerably less precipitation, with only 39 mm (1.5 in) falling over just 6 days. The humidity levels also drop to 71%, offering a more comfortable atmosphere compared to September. For a detailed look at the February weather, visit Santa Rosa weather in February.
September and March exhibit distinct weather patterns, despite having similar average temperatures around 27°C (81°F). In September, the minimum temperature is slightly higher at 23°C (74°F), with a maximum reaching up to 33°C (92°F). However, it is marked by significantly higher precipitation, averaging 400 mm (15.8 in) over 28 days, resulting in high humidity levels of 89%. In contrast, March offers a more arid climate with a lower minimum temperature of 20°C (69°F), only 34 mm (1.3 in) of rainfall over just 7 days, and a more comfortable humidity level of 68%. For more detailed insights into March weather, visit Santa Rosa weather in March.
In September, the weather tends to be quite humid and wet, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 33°C (92°F). The month sees significant rainfall, totaling 400 mm (15.8 in) over 28 days, resulting in a high humidity level of 89%. In contrast, April offers warmer temperatures, with a minimum of 22°C (73°F) and a maximum of 34°C (94°F), but much less rain, averaging only 50 mm (2.0 in) across 11 days and a lower humidity of 69%. This makes April a noticeably drier and warmer month compared to the wetter, more humid conditions of September. For more details on April's climate, visit Santa Rosa weather in April.
When comparing the weather in September and May, it’s clear that both months offer warm temperatures, but with some notable differences. September experiences slightly lower average temperatures, ranging from a minimum of 23°C (74°F) to a maximum of 33°C (92°F). In contrast, May tends to be hotter, with temperatures ranging from 24°C (75°F) to a scorching 36°C (97°F). Additionally, September is significantly wetter, with a total precipitation of 400 mm (15.8 in) over 28 days, compared to May's 198 mm (7.8 in) over just 22 days. The humidity is also higher in September at 89%, while May enjoys a drier atmosphere with humidity around 76%. For more details on the conditions in May, you can visit Santa Rosa weather in May.
In comparing the weather of September and June, we observe that both months feature warm temperatures, with September showing a minimum of 23°C (74°F) and an average of 27°C (81°F), while June has a slightly higher minimum of 24°C (75°F) and an average of 28°C (82°F). The maximum temperatures are also comparable, with September peaking at 33°C (92°F) and June reaching 34°C (94°F). However, September experiences slightly more rainfall, totaling 400 mm (15.8 in) over 28 days, compared to June's 371 mm (14.6 in) across 27 days. Humidity levels are similarly high, with September recording 89% and June at 87%. For a detailed look at June's weather specifics, you can check out Santa Rosa weather in June.
In comparing the weather between September and July, both months showcase similar temperature patterns, with average temperatures consistently around 27°C (81°F). However, September tends to see slightly cooler minimum temperatures averaging at 23°C (74°F) compared to July's minimum of 24°C (75°F). Precipitation differs notably, with July experiencing a higher total of 561 mm (22.1 in) over 30 days, while September sees 400 mm (15.8 in) of rain spread across 28 days. Humidity levels remain high in both months, with September at 89% and July at 88%. For more detailed information, you can check Santa Rosa weather in July.
In comparing the weather patterns of September and August, both months exhibit similar average temperatures, hovering around 27°C (81°F), with maximum temperatures reaching up to 33°C (92°F). However, September experiences slightly lower minimum temperatures of 23°C (74°F), compared to August's minimum of 24°C (75°F). Precipitation levels show a decrease in September, with 400 mm (15.8 in) spread over 28 days, whereas August recorded 440 mm (17.3 in) over 29 days. Interestingly, humidity remains constant at 89% in both months, ensuring a consistently humid atmosphere. For those wanting to learn more about the weather conditions in August, they can refer to Santa Rosa weather in August.
In comparing the weather between September and October, we see some notable differences. September experiences slightly higher maximum temperatures, reaching up to 33°C (92°F), while October's maximum temperature is just a degree lower at 32°C (90°F). Both months share an average temperature of 27°C (81°F), but October begins with a marginally warmer minimum temperature of 24°C (75°F) compared to September's 23°C (74°F). On the precipitation front, September is significantly wetter, recording 400 mm (15.8 in) across 28 days, while October sees a reduced total of 285 mm (11.2 in) over 24 days. The humidity also decreases slightly in October to 86%, down from September's 89%. For more detailed information on the weather specifics, visit Santa Rosa weather in October.
In comparing the weather between September and November, both months display similar temperature ranges, with September showing a slightly higher maximum temperature of 33°C (92°F) compared to November's peak of 32°C (90°F). September is characterized by significantly higher rainfall, totaling 400 mm (15.8 in) over 28 days, while November experiences a more moderate precipitation of 163 mm (6.4 in) across just 14 days. Humidity remains consistent in both months at 89%, creating a tropical atmosphere. For more details on November weather specifically, you can explore Santa Rosa weather in November.
September typically brings warmer temperatures than December, with minimums around 23°C (74°F) and maximums reaching up to 33°C (92°F), compared to December’s minimum of 21°C (70°F) and maximum of 31°C (89°F). Additionally, September experiences significantly higher precipitation, averaging 400 mm (15.8 in) over 28 days, while December sees only 176 mm (6.9 in) across 15 days. Despite the cooler temperatures in December, humidity remains relatively high, at 86%, slightly lower than September’s 89%. For more insights into December weather patterns, check out Santa Rosa weather in December.
As September rolls in, Santa Rosa experiences a notable shift in weather patterns, bringing a blend of warmth and humidity that sets it apart from other months. With an average temperature hovering around a comfortable 27°C, the days can occasionally peak at a sweltering 33°C, making for a vibrant yet humid atmosphere. This month also sees an impressive amount of rainfall, with nearly every day contributing to the total of 400 mm, reaching a dizzying 89% humidity that envelops the city. This contrasts sharply with the drier months, highlighting September's role as a bridge between the dry summer and the wetter seasons ahead. For more details on the weather nuances of this vibrant region, explore Santa Rosa Climate.