Last updated: August 27, 2025
September in La Union, Philippines, is characterized by warm temperatures and significant rainfall. With a maximum temperature reaching 29°C (85°F) and an average of 27°C (81°F), the month offers a tropical climate that many find enticing. However, those planning to visit should be prepared for the minimum temperature of 25°C (78°F). Rainfall is a defining feature, with a notable precipitation amount of 129 mm (5.1 in) spread over 18 days, contributing to the region's lush green landscapes. The humidity remains high at 85%, creating a muggy atmosphere that underscores the vibrant yet challenging weather of this coastal area during September.
As September arrives in La Union, Philippines, temperatures remain comfortably warm, with a minimum of 25°C (78°F) and an average of 27°C (81°F), peaking at around 29°C (85°F). This month aligns closely with the patterns seen in preceding months, showcasing a stable climate that is typical for the region. While the temperatures are slightly elevated compared to the earlier months of the year, they create an inviting atmosphere perfect for beach outings and outdoor adventures. The gradual transition toward the end of the year brings only subtle changes, maintaining La Union's charm in the warm tropical embrace that locals and travelers alike have come to love.
September in La Union, Philippines, sees a notable shift in precipitation patterns as the region transitions from the peak wet season. With 129 mm (5.1 inches) of rain over 18 days, September marks a gradual decline from the heavier downpours of previous months. This dip in precipitation hints at a slight easing of the rainy season, yet the frequency of wet days remains relatively high, ensuring the lush landscape continues to thrive. As the region prepares for the approaching dry season, the weather in September balances the remnants of summer showers with the promise of clearer skies ahead.
In September, La Union experiences a notable shift in humidity, sitting comfortably at 85%. This marks a dip from the peak levels observed earlier in the year, particularly in February with a staggering 92% humidity. As the summer months progress, humidity begins to decline from its earlier heights; May and June both average around 83%. The transition into September reflects a gradual easing of moisture in the air, moving from the sticky peak of the rainy season towards more moderate conditions. This trend highlights La Union's tropical climate, where humidity remains a constant companion but begins to level off as the year progresses into the latter months.
In September, La Union, Philippines, continues to experience an extreme UV Index, registering at 15. This marks a slight dip from the peak observed in earlier months, maintaining the trend of high solar intensity that characterizes the region throughout most of the year. Notably, despite the changing weather with the transition into the latter part of the year, the burn time remains a brief 10 minutes, emphasizing the persistent need for sun protection. As September unfolds, visitors and locals alike are encouraged to stay vigilant against the sun's rays. For more details on UV exposure throughout the year, check out the comprehensive guide at La Union UV Index.
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In September, La Union, Philippines, continues to bask in generous sunshine, recording 275 hours of radiant daylight. This month maintains the area's trend of ample sunlight throughout the year, with hours gradually decreasing from the vibrant peaks of March and April. As summer rounds down, September still offers a delightful experience for sun-seekers, with only a slight dip compared to the lively August, which saw 293 hours. This seasonal transition beautifully sets the stage for a mild autumn, inviting visitors to soak in the warm glow of the Philippine sun while enjoying the scenic beaches and lush landscapes.
In September, La Union experiences a 16% chance of sunny weather, which marks a notable dip compared to the preceding months. While this figure reflects a seasonal trend of fluctuating sunshine hours, it is interesting to note that September stands out with a lower likelihood of sunny days compared to the summer months of June, July, and August, all hovering around the 27% mark. As we transition into the latter part of the year, this decrease is part of a larger pattern that sees the sunniest conditions taper off after the peak summer months. Consequently, while September may not offer the same amount of sunshine, it beautifully ushers in the onset of the rainy season, enriching the lush landscapes for which La Union is renowned.
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.
As September unfolds in La Union, the average wind speed remains steady at 2.4 m/s (5 mph), mirroring August's gentle breezes. This consistency hints at a tranquil transition into the latter part of the year, maintaining a comfortable atmosphere ideal for relaxation. Notably, the month follows a peak in July, where winds reached 3.3 m/s (7 mph), and a slight decline is evident from the summer months. October shows a minor uptick, aligning back to 2.6 m/s (6 mph), indicating a gradual shift as the region approaches the everyday breezes of the end of the year. Overall, September’s wind patterns reflect a serene pause in La Union's coastal charm, offering a calm backdrop for locals and visitors alike.
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.
September and January showcase similar warm temperatures, with both months having average highs around 27-29°C (81-85°F). However, January experiences more rainfall, with 251 mm (9.9 in) over 22 days compared to September's 129 mm (5.1 in) over 18 days. Additionally, humidity levels are slightly higher in January at 90%, compared to 85% in September. For a more detailed view of January's weather in La Union, you can visit La Union weather in January.
September and February present fairly similar tropical weather conditions, though there are some notable differences. In September, the temperatures range from a minimum of 25°C (78°F) to a maximum of 29°C (85°F), with an average temperature of 27°C (81°F). This month also sees considerable precipitation, accumulating to 129 mm (5.1 in) over approximately 18 rainy days and an average humidity of 85%.
In contrast, February offers slightly cooler temperatures, with a minimum of 24°C (76°F) and a maximum of 28°C (83°F), averaging 26°C (80°F). It is a wetter month, with 141 mm (5.5 in) of rain spread over 19 days and a higher humidity level of 92%. For a detailed look at February's weather specifics, visit La Union weather in February.
In September, the weather is characterized by warm temperatures, with an average of 27°C (81°F) and a maximum of 29°C (85°F), alongside relatively high humidity levels at 85%. However, this month also experiences significant rainfall, totaling 129 mm (5.1 in) over approximately 18 days. In contrast, March sees slightly cooler temperatures, with average daily highs around 28°C (84°F) and minimums at 24°C (76°F). Despite the warmer average, March records more precipitation at 192 mm (7.6 in) across 23 rainy days, with humidity rising to 90%. For more specific details about March weather, you can visit La Union weather in March.
September and April share similar temperature ranges, with both months averaging around 27°C (81°F) and experiencing minimums and maximums of 25°C (77°F) and 29°C (85°F), respectively. However, September sees slightly higher precipitation levels at 129 mm (5.1 in) over 18 days, compared to April's 112 mm (4.4 in) spread across 21 days. Additionally, humidity levels are marginally higher in April at 87%, compared to September's 85%. For more detailed information, you can check La Union weather in April.
Both September and May exhibit similar temperature ranges, with minimum temperatures around 25°C (78°F) and maximum temperatures reaching up to 29°C (85°F). However, May tends to be wetter, experiencing 223 mm (8.8 in) of precipitation over 26 days, compared to September's 129 mm (5.1 in) over 18 days. Interestingly, the humidity levels are slightly higher in September at 85%, while May maintains a humidity of 83%. For a detailed comparison of weather conditions in May, check out La Union weather in May.
In both September and June, the weather presents a warm and humid atmosphere with similar temperature averages. Both months see minimum temperatures around 25°C (77-78°F), average temperatures at 27°C (81°F), and maximums reaching 29°C (85°F). However, September experiences slightly less rainfall with 129 mm (5.1 in) over 18 days compared to June’s 194 mm (7.6 in) over 26 days. The humidity levels are also quite close, with September at 85% and June at 83%, making both months feel similarly muggy and tropical. For more detailed insights on the weather specifics, you can visit La Union weather in June.
When comparing the weather in September and July, we see that both months exhibit similar temperature ranges, with minimums around 25°C (77-78°F), averages at 27°C (81°F), and maximums reaching 29°C (85°F). However, July experiences more precipitation, with 170 mm (6.7 in) of rainfall over 21 days, compared to September's 129 mm (5.1 in) over 18 days. Additionally, humidity levels are slightly higher in September at 85%, while July's humidity sits at 82%. For more detailed insights on July weather in La Union, you can visit La Union weather in July.
In comparing the weather between September and August, both months maintain similar temperature ranges, with min temperatures at 25°C (77-78°F) and an average of 27°C (81°F), while max temperatures peak at 29°C (84-85°F). However, September shows slightly reduced precipitation, accumulating 129 mm (5.1 in) over 18 rainy days, compared to August's 144 mm (5.7 in) across 21 days. Additionally, September has a marginally higher humidity level at 85%, compared to August’s 83%. For more details on August weather, you can check La Union weather in August.
September and October exhibit similar temperature patterns, with both months having a minimum temperature around 25°C (77°F) and an average temperature of approximately 27°C (81°F-82°F). However, October sees a slight increase in maximum temperatures, reaching up to 30°C (86°F), compared to September's 29°C (85°F). Precipitation also tends to rise in October, with a total of 149 mm (5.9 in) expected over 20 days, compared to 129 mm (5.1 in) over 18 days in September. Humidity levels remain relatively high in both months, but October is slightly lower at 82% compared to September's 85%. For more detailed weather information, check out La Union weather in October.
In comparing the weather between September and November, we find that both months maintain similar temperature ranges, with minimums at 25°C (78°F) and averages around 27°C (81°F), peaking at 29°C (85°F). However, November experiences slightly higher precipitation, totaling 172 mm (6.8 in) across 23 days, compared to September's 129 mm (5.1 in) over 18 days. Despite this increase in rainfall, November's humidity remains relatively close, averaging at 83% compared to September's 85%. This season shows a transition into wetter conditions while temperatures stay consistently warm. For more detailed information about the weather in November, visit La Union weather in November.
In September, the weather is warm with temperatures averaging around 27°C (81°F) and humidity levels relatively high at 85%. The month experiences about 129 mm (5.1 in) of precipitation spread over 18 days. In contrast, December maintains a similar temperature range, with average highs of 29°C (85°F) and lows around 25°C (78°F). However, December is slightly wetter, receiving 155 mm (6.1 in) of rain over 23 days and experiencing marginally higher humidity at 87%. For a more detailed look at the weather during this month, you can visit La Union weather in December.
As September rolls in, La Union experiences a shift in its weather patterns. The temperatures are pleasantly warm, hovering around a comfortable average, while the humidity peaks at a notable 85%. However, this month is also marked by increased precipitation, with frequent rain showers that can transform typical beach outings into cozy indoor retreats. The lush landscapes and vibrant local life thrive during this season, making it a unique time to experience the charm of La Union. For a comprehensive look at the climate variations throughout the year, check out La Union Climate.