Last updated: August 27, 2025
September in Olongapo, Philippines, brings a warm and humid climate, with average temperatures hovering around 27°C (81°F). The month peaks with maximum temperatures reaching 31°C (88°F), while dropping to a minimum of 24°C (75°F). This period is characterized by significant precipitation, totaling 440 mm (17.3 in) over 26 days, contributing to the region's lush landscapes. The humidity levels remain high at a striking 89%, creating a tropical atmosphere that defines this vibrant coastal city. Prepare for frequent rain showers interspersed with warm, sunny intervals as Olongapo embraces the charm of its wet season.
In September, Olongapo experiences a pleasant blend of warm temperatures, with minimums around 24°C (75°F) and averages hitting 27°C (81°F), creating a comfortable environment for both locals and visitors. As the summer heat begins to taper off, the maximum temperatures peak at 31°C (88°F), reflecting a slight dip from the hotter months of May through August, where maximums frequently reached above 32°C (89°F). This transitional month continues to embrace the tropical warmth while hinting at the cooler conditions that will arrive in the following months, making it an ideal time for outdoor activities before the onset of the rainy season.
September in Olongapo, Philippines, marks a significant shift in precipitation patterns, with 440 mm (17.3 in) of rain falling over 26 days. This month is emblematic of the region's transition from the peak of the rainy season, as it sees a substantial drop from the torrential rains of July and August, which recorded 648 mm (25.5 in) and 599 mm (23.6 in) respectively. The intense rainfall during these summer months begins to ease, yet September remains a notably wet period, contributing to a cumulative yearly total that showcases the Philippines' lush, tropical climate. Interestingly, despite the reduction in rainfall intensity, the frequency of rain continues to linger from the high July and August levels, highlighting a climate where rain remains a frequent companion as the region shifts toward drier months ahead.
September in Olongapo, Philippines, marks a peak in humidity, recorded at a notable 89%. This intense moisture precedes the wetter months, as humidity has been steadily climbing since June. The trend captures a distinct pattern where the summer months flirt with a lower range of around 68% to 76%, but as the rainy season approaches, numbers rise dramatically. With both July and August experiencing similar highs, September feels like a continuation of this sultry weather. As the year progresses into October, humidity slightly dips to 86%, hinting at the onset of a more temperate phase. Overall, September solidifies itself as a key marker in Olongapo's transition from the summer heat to the lush, rain-soaked months ahead.
In September, Olongapo experiences a UV Index of 14, continuing the trend of extreme exposure that characterizes much of the tropical climate throughout the year. This persistent level of UV radiation, which keeps burn time at a swift 10 minutes, reflects a consistent pattern observed since June, demonstrating the need for adequate sun protection. With intense levels peaking in March, April, and carrying through the summer months, residents and visitors alike should remain vigilant about sun safety as they enjoy outdoor activities. For more details on UV levels in Olongapo, you can check Olongapo UV Index.
UV Risk Categories
September brings a delightful blend of sunshine to Olongapo, Philippines, with 246 hours of bright, sunny days. As summer fades, the hours of sunlight gradually decrease from the peak of 315 hours in May, yet September still offers a vibrant atmosphere filled with warmth and light. This month serves as a transition, nestled between the sun-drenched summer and the increasingly overcast months of the year. Following a slight dip in August, the sun shines steadily, promising perfect conditions for outdoor adventures or relaxation by the beach, making it a cherished time for locals and visitors alike to soak up the last rays of the season.
In Olongapo, Philippines, the likelihood of sunny weather experiences a distinct fluctuation throughout the year. As the calendar rolls into September, chances of sunshine dip to 17%, a transient low following the rainy months of July and August, which themselves offer a mere 10% and 9% respectively. This trend hints at a transitional period from the rainfall-dominant summer months towards a slightly brighter October, which sees a modest increase to 27%. Notably, before diving into the wet season, the earlier months like March and May boast significantly higher probabilities of clear skies, at 52% and 56%, respectively. Overall, while September may be less promising in terms of sun, the gradual shift afterwards suggests more favorable weather is just around the corner.
As September rolls into Olongapo, the city enjoys a consistent 12 hours of daylight, mirroring the trend established in the preceding months from March through August. This steady illumination reflects the tropical climate, where daylight durations remain relatively stable throughout the year. As the equatorial sun begins its gradual retreat, daylight dips back to 11 hours in October, signaling the onset of a seasonal shift. This predictable rhythm of daylight offers residents and visitors alike ample opportunity to soak in the vibrant hues of Olongapo’s beautiful landscapes and bustling city life, creating an ideal backdrop for outdoor adventures before the days shorten further.
As September unfolds in Olongapo, Philippines, the gentle whispers of the wind tend to calm down, with average speeds dropping to 2.3 m/s (5 mph). This marks a notable decrease from the vibrant breezes of July, which enjoyed peaks at 3.8 m/s (8 mph). Interestingly, the trend reveals that the months leading up to September often feature livelier winds, particularly in the heart of the rainy season, but as summer transitions into the fall, these breezes take on a more subdued character. Comparing September to the earlier months, where speeds hovered between 2.8 m/s (6 mph) and 3.6 m/s (8 mph), it’s clear that this month invites a more tranquil atmosphere, signaling a shift in the seasonal rhythm. Prepare for balmy days enhanced by a refreshing serenity, perfect for enjoying the beautiful coastal scenery.
Weather in Olongapo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Olongapo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is significantly wetter and more humid compared to January. With an average temperature of 27°C (81°F) and high humidity at 89%, September sees frequent rain, accumulating 440 mm (17.3 in) over 26 days. In contrast, January features a slightly cooler average temperature of 26°C (79°F) but with much lower humidity at 76%. This month experiences minimal precipitation, totaling only 50 mm (2.0 in) over just 6 days, making it a drier and more comfortable time of year. For more details, you can check Olongapo weather in January.
September and February present notably different weather patterns. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 31°C (88°F), with an average of 27°C (81°F). This month is characterized by high humidity levels at 89% and significant rainfall of 440 mm (17.3 in) over 26 days. In contrast, February sees milder temperatures, with a minimum of 21°C (70°F), an average of 26°C (79°F), and the same maximum of 31°C (88°F). Rainfall drops dramatically to just 33 mm (1.3 in) over 5 days, and humidity decreases to 71%. For more details on February weather, you can refer to Olongapo weather in February.
When comparing the weather of September and March, notable differences emerge. September brings a warm climate with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 31°C (88°F), accompanied by high humidity at 89% and significant rainfall, totaling 440 mm (17.3 in) over 26 days. In contrast, March features slightly milder temperatures, with a minimum of 22°C (73°F) and a maximum of 33°C (91°F), but it has substantially less precipitation at only 15 mm (0.6 in) over just 4 days, and humidity drops to 68%. For more detailed insights, visit Olongapo weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences a warmer average temperature with a minimum of 24°C (75°F) and a maximum of 31°C (88°F), along with significantly higher humidity at 89%. This month is characterized by heavy rainfall, accumulating 440 mm (17.3 in) over 26 days. In contrast, April boasts a slightly cooler minimum temperature of 23°C (74°F) and a higher maximum of 33°C (92°F) but enjoys substantially drier conditions, with only 24 mm (0.9 in) of precipitation over just 7 days. The humidity in April is also lower, at 69%. For a closer look at what to expect during this time, check out Olongapo weather in April.
When comparing the weather of September and May, September typically offers slightly cooler temperatures, with averages ranging from a minimum of 24°C (75°F) to a maximum of 31°C (88°F). In addition, September is characterized by high humidity at 89% and considerable rainfall, averaging 440 mm (17.3 in) over 26 days. In contrast, May features warmer conditions, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 34°C (94°F) and lower humidity levels at 76%. Rainfall in May is also significantly less, averaging only 100 mm (4.0 in) over 17 days. For more detailed insights into May weather, you can check Olongapo weather in May.
In comparing the weather of September and June, we observe that June generally has slightly higher temperatures, with averages reaching 28°C (82°F) and maximums hitting 33°C (91°F), compared to September's average of 27°C (81°F) and maximum of 31°C (88°F). However, September experiences higher rainfall, with 440 mm (17.3 in) over 26 days, whereas June sees 380 mm (15.0 in) across 27 days. Humidity levels are comparable, with September at 89% and June a touch lower at 87%. For more details on June weather specifics in Olongapo, you can check Olongapo weather in June.
In comparing the weather of September and July, we see that both months feature similar minimum and average temperatures, with July having a slightly higher maximum temperature at 32°C (90°F) compared to September's 31°C (88°F). However, July experiences significantly more precipitation, totaling 648 mm (25.5 in) over 29 days, while September sees 440 mm (17.3 in) across 26 days. Humidity levels are quite comparable, with September at 89% and July slightly lower at 88%. For more detailed insights, you can check this link: Olongapo weather in July.
In comparing the weather of September and August, both months experience similar temperature ranges, with minimums around 24°C (75°F) and averages hovering around 27°C. However, August tends to be slightly warmer, boasting a maximum of 32°C (89°F) compared to September's peak of 31°C (88°F). Notably, August also receives significantly more rainfall, with a total of 599 mm (23.6 in) over 29 days, while September sees a reduction to 440 mm (17.3 in) over 26 days. Both months maintain a high humidity level of 89%. For a more detailed look at weather conditions, check out Olongapo weather in August.
In September, the weather is characterized by a minimum temperature of 24°C (75°F), an average of 27°C (81°F), and a maximum of 31°C (88°F). This month experiences significant rainfall, totaling 440 mm (17.3 in) over 26 days, contributing to a high humidity level of 89%. In contrast, October sees a similar temperature range, with minimums at 24°C (76°F), averages at 27°C (81°F), and slightly higher maximums at 32°C (89°F). However, precipitation decreases substantially to 224 mm (8.8 in) over 21 days, resulting in a slightly lower humidity of 86%. For more details on October weather patterns, you can check Olongapo weather in October.
In September, the weather tends to be quite wet, with an average temperature range of 24°C to 31°C (75°F to 88°F) and substantial rainfall of 440 mm (17.3 in) over 26 days. Humidity remains high at 89%. In contrast, November brings a similar temperature range with minimums at 24°C (76°F) and maximums reaching 32°C (89°F). However, November sees a significant reduction in precipitation, totaling only 155 mm (6.1 in) over just 12 days, while maintaining the same humidity level of 89%. For more specific details about November weather in Olongapo, you can check this link: Olongapo weather in November.
In September, the weather is characterized by consistently warm temperatures, with a minimum of 24°C (75°F) and an average of 27°C (81°F), reaching a maximum of 31°C (88°F). However, this month also sees significant rainfall, totaling 440 mm (17.3 in) across 26 days, resulting in humidity levels around 89%. In contrast, December presents a slightly cooler yet similar temperature range, with a minimum of 23°C (74°F), maintaining an average of 27°C (80°F), and peaking at 31°C (88°F). Notably, December experiences much lower precipitation at 76 mm (3.0 in) over just 10 days, alongside a slight decrease in humidity at 86%. For more detailed insights on December conditions, you can check Olongapo weather in December.
As September arrives in Olongapo, the weather distinctly shifts, embracing a humid atmosphere that reaches an average temperature of 27°C (81°F) but can peak to a maximum of 31°C (88°F). This month is marked by increased rainfall, with around 440 mm (17.3 in) spread over 26 days, creating a wet environment that contrasts sharply with the drier spells experienced earlier in the year. The high humidity at 89% adds to the tropical feel, making September a month where outdoor adventures may require a bit more preparation. For more insights on what to expect throughout the year, explore the detailed information at Olongapo Climate.