Last updated: August 27, 2025
In September, La Union, Philippines, experiences a tropical climate characterized by a maximum temperature of 32°C (89°F) and an average of 27°C (82°F), providing warm and inviting conditions. The nights remain mild, with temperatures dropping to a minimum of 24°C (75°F). This month, the region sees considerable precipitation totaling 165 mm (6.5 in) over approximately 22 days, contributing to a notably high humidity level of 84%. Visitors can expect frequent rain showers amidst the warmth, which enhances the lush landscapes and vibrant atmosphere of this beautiful coastal area.
September in La Union, Philippines, showcases a warm and inviting climate, perfectly embodying tropical charm. With minimum temperatures around 24°C (75°F) and an average hovering at 27°C (82°F), visitors can expect comfortable days. The maximum temperatures reach about 32°C (89°F), indicating that summer's warmth lingers even as the month transitions towards the wetter season. Compared to the preceding months, September maintains a stable temperature range, mirroring the conditions of August while also hinting at the cooler nights that will soon follow in October. This consistent warmth makes September an excellent time to explore the region’s beautiful beaches and vibrant culture before the rains settle in.
September in La Union, Philippines, marks a transition in precipitation patterns, receiving 165 mm (6.5 inches) of rainfall over 22 days. This dip in rainfall is notable compared to the heavier downpours experienced in the preceding months of June and July, which reported 238 mm (9.4 in) and 212 mm (8.3 in) respectively. As the region edges toward October, a notable increase in precipitation is anticipated, with an average of 222 mm (8.7 in) expected. This trend illustrates the late wet season's characteristic fluctuations, as September offers a brief respite before re-entering the more rain-soaked months ahead. Despite being one of the drier months of the year, the consistent rain underscores the tropical climate's impact on the region, revealing a delicate balance between sunshine and showers.
In La Union, Philippines, September ushers in a slight dip in humidity, averaging 84%, after the peak months of January to March, when levels remain consistently high at 90%. While the rainy season begins to wane, the air continues to carry a noticeable moisture, reminiscent of the tropical atmosphere. Following the comparatively drier months of May and June, where humidity falls to 83% and 81% respectively, September showcases a subtle increase, indicating the lingering effects of summer. This pattern continues into November, pegging humidity back to 84%, creating a climate that remains warm and inviting, suitable for both relaxation and adventure among its stunning beaches.
In September, La Union continues to experience a notably high UV Index of 14, categorizing the exposure level as extreme. This month follows a consistent pattern seen throughout the year, where the UV index typically fluctuates between 11 and 16, with many months such as March and April peaking at 16. While the burn time remains a swift 10 minutes across all months, including September, it's essential for residents and visitors alike to remain vigilant about sun protection. This trend highlights the importance of regularly monitoring UV exposure as you enjoy the beautiful beaches and vibrant culture of La Union. For more detailed information on UV levels, check out La Union UV Index.
UV Risk Categories
September in La Union, Philippines, bathes in a warm embrace of sunlight, with 283 hours of radiant days that mark a transition from the vibrant summer months to the gentle embrace of the fall. This month maintains a strong average of sunshine, closely trailing August, which boasts the year's peak at 292 hours. Following a pattern of gradually decreasing daylight, September offers a sweet spot of warmth that invites outdoor adventures and beach escapades, before the sun’s grip begins to loosen in the coming months. This delightful balance of sunshine is a testament to La Union's allure, making it an ideal destination for those seeking to bask in the golden glow of early autumn.
In September, La Union, Philippines, experiences a modest likelihood of sunny weather, with only an 11% chance of sunshine. This trend reflects a consistent pattern seen throughout the year, particularly following a peak in sunshine during the early months. The sunshine probabilities taper off as the rainy season approaches, suggesting that while the warmth remains, the skies are more likely to bring clouds than rays. As September unfolds, visitors might anticipate mild conditions but should be prepared for intermittent rain, typical of this transitional period in the region.
In La Union, Philippines, the rhythm of daylight unfolds with a captivating consistency throughout the year. From January to February, residents bask in 11 hours of light, heralding the arrival of longer days as spring approaches. By March, daylight begins to expand to 12 hours, a trend that continues through the summer months of April to August, creating an inviting atmosphere for outdoor activities and exploration. Interestingly, September maintains this delightful 12-hour daylight duration, providing a seamless transition into the changing seasons. As October sets in, the daylight gently tapers back to 11 hours, signaling the onset of cooler months. This predictable pattern not only enhances daily life but also showcases La Union's appealing climate, making it a year-round haven for sun-seekers.
In September, La Union experiences a gentle breeze with an average wind speed of 1.7 m/s (approximately 4 mph), maintaining the same calming vibe that characterized the preceding two months. This consistent wind flow reflects a subtle trend seen throughout the year, where the spring and summer months hover around similar speeds, only to rise slightly in December with 2.3 m/s (5 mph). Despite the minor fluctuations, September’s steady winds create an inviting atmosphere, perfect for beachgoers and surfers alike, while heralding the transition into the more dynamic weather patterns of the upcoming fall months.
Weather in La Union varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in La Union, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), with an average temperature of 27°C (82°F). Although it experiences a considerable amount of rainfall at 165 mm (6.5 in) over 22 days, the humidity is relatively lower at 84%. In contrast, January sees slightly cooler temperatures, with a minimum of 23°C (73°F), an average of 26°C (79°F), and a maximum of 30°C (87°F). However, it has a higher precipitation level of 241 mm (9.5 in) across 23 days and increased humidity at 90%. For more details on the weather in January, check out La Union weather in January.
In September, the weather is warm with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 32°C (89°F), and an average temperature of 27°C (82°F). It typically experiences considerable rainfall, with 165 mm (6.5 in) spread over about 22 days and an humidity level of 84%. In contrast, February brings slightly cooler temperatures, with a minimum of 21°C (71°F), an average of 26°C (79°F), and a maximum of 30°C (87°F). This month sees even more rainfall, totaling 209 mm (8.2 in) over roughly 20 days, along with a higher humidity level of 90%. For more detailed information on weather in February, check out La Union weather in February.
When comparing the weather in September and March, we can observe that September tends to be slightly warmer, with average temperatures reaching 27°C (82°F) compared to March's 26°C (80°F). Both months experience high humidity, but March is a bit more humid at 90% versus September's 84%. Additionally, September sees more precipitation, totaling 165 mm (6.5 in) over 22 days, while March has 139 mm (5.5 in) across 19 days. For more detailed insights, you can check La Union weather in March.
In comparing the weather of September and April, we see some notable similarities and differences. Both months maintain a warm average temperature of around 27°C (81°F), with maximum highs reaching up to 32°C (89°F). However, September tends to be slightly wetter, experiencing 165 mm (6.5 in) of precipitation over 22 days, compared to April's 148 mm (5.8 in) over 17 days. Additionally, humidity levels are a bit higher in April at 88% versus 84% in September, suggesting that April may feel slightly more humid despite the similar temperatures. For those looking for more detailed insights, check out La Union weather in April.
In comparing the weather between September and May, both months feature similar warm temperatures, with September having a minimum of 24°C (75°F), averaging 27°C (82°F), and peaking at 32°C (89°F). In contrast, May offers slightly higher averages with minimum temperatures also at 24°C (75°F) but an average of 28°C (82°F) and a maximum of 33°C (91°F). Precipitation levels in September reach 165 mm (6.5 in) across 22 rainy days, while May sees a bit more rain with 178 mm (7.0 in) over 27 days. Humidity levels are comparable, at 84% in September and 83% in May, making both months feel quite humid. For more detailed weather information, check out La Union weather in May.
In comparing the weather of September and June, both months experience similar average temperatures, hovering around 27°C (82°F). However, September tends to be slightly warmer with minimum temperatures of 24°C (75°F) compared to June's 25°C (76°F). Despite these similar temperature ranges, June is characterized by significantly higher precipitation, with 238 mm (9.4 in) falling over 26 days, while September records 165 mm (6.5 in) over 22 days. The humidity levels are also notable; September has a slightly higher humidity at 84%, compared to June's 81%. For a more detailed look at June weather patterns, you can check out La Union weather in June.
In comparing the weather between July and September, both months exhibit warm temperatures, with minimums around 24°C (75-76°F), average highs of 27°C (82°F), and maximums peaking at 32°C (89-90°F). However, September tends to be slightly less humid, averaging 84% compared to July's 80%. Notably, precipitation is higher in July, totaling 212 mm (8.3 in) over 23 days, while September sees 165 mm (6.5 in) across 22 days. For more details on July's weather, you can visit La Union weather in July.
In comparing the weather of September and August, we see slight variations in temperature and precipitation. September features a minimum temperature of 24°C (75°F), averaging 27°C (82°F), and peaking at a maximum of 32°C (89°F), maintaining a similar warm feel. In contrast, August has a slightly higher average temperature of 28°C (82°F) with the same minimum and maximum temperatures. Precipitation in September rises to 165 mm (6.5 in), slightly surpassing August's 152 mm (6.0 in), with both months experiencing rainfall on 22 days. Additionally, September's humidity is slightly higher at 84% compared to 81% in August. For more detailed insights, you can visit La Union weather in August.
In comparing the weather of September and October, both months exhibit similar temperature ranges, with minimums around 24°C (75°F), average temperatures of 27°C (82°F), and maximums reaching up to 32°C (89°F). However, October experiences a notable increase in precipitation, totaling 222 mm (8.7 in) over 27 days, compared to September's 165 mm (6.5 in) over just 22 days. Additionally, October's humidity slightly decreases to 81%, while September maintains a higher humidity level of 84%. For more detailed information, you can check La Union weather in October.
In comparison, the weather in September tends to be slightly warmer with average temperatures around 27°C (82°F) and maximums reaching 32°C (89°F). During this month, a significant amount of rainfall occurs, totaling 165 mm (6.5 in) across 22 days, contributing to high humidity levels of 84%.
In contrast, November sees a marginally cooler minimum temperature of 21°C (71°F) while maintaining the same average of 27°C (81°F) and a maximum of 31°C (88°F). The rainfall increases to 189 mm (7.4 in) spread over 25 days, with humidity levels remaining constant at 84%. For more detailed weather information, you can check La Union weather in November.
In comparing the weather of September and December, we notice that both months have similar average temperatures, hovering around 27°C (80°F). However, September tends to be slightly warmer with maximum temperatures reaching 32°C (89°F) compared to December's peak at 31°C (88°F). One significant difference lies in precipitation; December experiences considerably more rainfall, with 264 mm (10.4 in) over 28 days, compared to September's 165 mm (6.5 in) over 22 days. Additionally, humidity levels rise slightly in December to 88%, up from 84% in September. For more detailed information, check out La Union weather in December.
As September ushers in a shift in La Union's weather, it presents a blend of warmth and moisture that stands out from the drier months. With average temperatures hovering around a comfortable 27°C (82°F) and a notable increase in humidity at 84%, the atmosphere feels distinctly tropical. Rainfall becomes more frequent, with 165 mm of precipitation spread over nearly three weeks, creating a lush environment that contrasts sharply with the preceding months. This combination of warmth and persistent showers makes September a unique time to experience the vibrant beauty of La Union, inviting both locals and visitors to embrace its lush landscapes. For a more comprehensive understanding of the region's climate, check out La Union Climate.