August Weather in San Juan, Philippines

Last updated: August 27, 2025

In August, San Juan, Philippines experiences a tropical climate characterized by warm temperatures and high humidity. With maximum temperatures reaching 31°C (87°F) and an average of 27°C (80°F), the days are often hot and inviting. However, temperatures can drop to a minimum of 24°C (75°F) during the cooler nights. This month is notably wet, as precipitation totals around 609 mm (24.0 in) over approximately 29 days, contributing to a humidity level of 87%. Such conditions create a lush environment, making San Juan a vibrant destination, albeit one that requires visitors to be prepared for frequent rain.

August Temperature in San Juan

In August, San Juan, Philippines, continues to bask in the warm embrace of summer, with temperatures reflecting a subtle consistency throughout the season. The month sees minimum temperatures of around 24°C (75°F), while the average settles at a comfortable 27°C (80°F)—slightly lower than the preceding months. With maximum temperatures reaching up to 31°C (87°F), the heat remains inviting yet manageable, mirroring the patterns established in July. This trend illustrates a stable climate conducive for outdoor activities, making August a delightful time to explore the vibrant local culture and stunning coastal attractions.

August Weather in San Juan: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in San Juan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec787880828282818081818179
Data source: Temperature data for San Juan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in San Juan

In August, San Juan, Philippines, experiences its peak precipitation, recording a staggering 609 mm (24.0 in) of rain over 29 days. This month is a culmination of the wet season, where rainfall steadily rises from 29 mm in January to a dramatic 533 mm in July and culminates in August's deluge. The frequency of rain from May onwards indicates a shift to more prolonged wet spells, particularly evident as August matches July's commitment to daily rainfall, creating a lush, verdant landscape yet also presenting challenges for daily life. Overall, this trend underscores the region's characteristic tropical climate, where August stands out as the epitome of the rainy season.

August Precipitation Trends in San Juan

The chart displays monthly precipitation patterns in San Juan, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In San Juan, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec291611291583695336093431657127
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Juan

August in San Juan, Philippines, marks a peak in humidity levels, reaching an impressive 87%. This rise is part of a broader trend, as the humidity steadily increases from the drier months of January through April, when it hovers around 71% to 77%. As the year progresses into the sweltering summer months, particularly June and July, the humidity climbs significantly, hitting 85% and 86%, respectively. The transition into August doesn’t just continue this trend; it signals the beginning of a high-humidity phase that persists into the fall, with September echoing August’s levels. Overall, it’s evident that San Juan's climate becomes increasingly sultry as summer unfolds, creating a warm, tropical atmosphere that characterizes the region during this time of year.

August Average Humidity in San Juan

This chart illustrates the average monthly humidity levels in San Juan, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in San Juan is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%71%73%77%85%86%87%87%86%89%85%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in San Juan

In August, San Juan, Philippines, experiences a UV Index of 14, maintaining a status of extreme exposure similar to the preceding months. This trend of high UV levels reflects the region's intense sunlight during the summer, where the burn time is drastically reduced to just 10 minutes. The relentless sunshine is characteristic of the months leading up to and including August, with UV Index readings hovering between 13 and 14 from June through September, emphasizing the necessity for sun safety measures. As the summer season progresses, it’s crucial to remain vigilant about sun protection, ensuring that you stay safe while enjoying the beautiful outdoors. For more details, visit San Juan UV Index.

Maximum UV Index Levels in San Juan for August

The chart shows the monthly maximum UV Index (UVI) for San Juan in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in San Juan typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414131314141413109
Data source: San Juan August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in San Juan

In August, San Juan, Philippines, enjoys a delightful 251 hours of sunshine, marking a slight dip from the peak of 320 hours in May. As the summer months progress, sunlight hours begin to taper off, with June and July seeing 285 and 268 hours respectively. This trend highlights the transition towards the rainy season, where sun-kissed days become more interspersed with cloud cover. Despite the decrease, August still offers plenty of bright moments, seamlessly bridging the vibrant summers of the early months and the cooler, more overcast days ahead. As daylight gradually wanes, the beauty of San Juan’s sun-soaked shores remains a picture-perfect escape, inviting sun-seekers to linger a little longer.

Monthly Sunshine Duration in San Juan: August Highlighted

The August sunshine duration represents the total number of hours San Juan experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec240h275h316h313h320h285h268h251h269h282h272h283h
Data source: San Juan August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Juan During August

August in San Juan, Philippines, is typically associated with a notably low chance of sunny weather, with only a 14% likelihood of clear skies. This trend follows a significant dip in sunshine during the preceding summer months—July stands at just 18%, with June plummeting to a mere 16%. Comparatively, the chances of sunny days improve as the year progresses, with brighter prospects returning in September at 38% and rising further into the later months. Thus, while August may not be the sunniest of months, it serves as a poignant reminder of the seasonal shifts that bring renewed opportunities for warmth and light in the months to come.

Percentage of Sunny Days in August in San Juan

The chart illustrates the percentage of sunny days in San Juan throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often San Juan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec55%55%67%66%64%16%18%14%38%41%63%58%
Data source: San Juan August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Juan in August

In August, San Juan, Philippines enjoys a daylight duration of 12 hours, maintaining a consistent trend observed throughout the summer months. As the year progresses from the shorter days of January and February, which each offer 11 hours of sunshine, the daylight gradually increases, peaking in June and July with 13 hours. Following this summer zenith, August sees a slight decrease, but the length remains steady, echoing the patterns of March, April, and May. This rhythmic alternation of daylight duration not only enhances the vibrant outdoor culture of San Juan but also signifies the region's tropical climate, where residents and visitors alike can bask in generous sunlight as they embrace the beauty of this archipelago.

Average Daylight Hours in San Juan for August

The chart illustrates the variation in daylight duration in San Juan throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 10m11h 32m12h 2m12h 32m12h 57m13h 10m13h 3m12h 41m12h 12m11h 42m11h 16m11h 4m
Data source: San Juan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in San Juan

In August, the winds in San Juan, Philippines offer a calming yet refreshing backdrop with an average speed of 3.6 m/s (8 mph). This month sees a slight resurgence in wind strength compared to the preceding months, notably marking a transition from the lighter breezes of May and June. Despite being one of the wetter months, August maintains a moderate wind pattern that is similar to July, which features a peak year-round speed of 4.0 m/s (9 mph). With September approaching, a gentle decline to an average speed of 2.3 m/s (5 mph) suggests that the region is soon to experience a shift towards a quieter atmosphere. Overall, August stands out as a month where the winds are just robust enough to provide delightful respite amidst the tropical heat.

Average August Wind Speed in San Juan

The chart displays monthly wind speed patterns in San Juan, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.13.42.73.32.03.64.03.6 m/s2.33.13.24.9
Data source: San Juan August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in San Juan Compares to Other Months

Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.

August and January present distinctly different weather patterns. In August, temperatures range from a minimum of 24°C (75°F) to a maximum of 31°C (87°F), with an average of 27°C (80°F). This month is characterized by high humidity at 87% and substantial precipitation, totaling 609 mm (24.0 in) over 29 days, making it one of the wettest months. In contrast, January offers a slightly cooler climate, with temperatures ranging from 20°C (68°F) to 31°C (88°F) and an average of 26°C (78°F). The precipitation is significantly lower at just 29 mm (1.1 in) over 3 days, and humidity is also reduced to 77%. For more details on January weather, you can visit San Juan weather in January.

In comparing the weather for August and February, it is clear that August is significantly warmer and wetter. August experiences average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 31°C (87°F), coupled with high humidity levels of 87%. This month also sees considerable rainfall, with 609 mm (24.0 in) spread over 29 days, resulting in a very moist atmosphere. In contrast, February offers a milder climate with temperatures ranging from a minimum of 19°C (66°F) to an average of 25°C (78°F), peaking at 31°C (88°F). Notably, February is much drier, receiving only 16 mm (0.6 in) of rainfall over just 2 days, and features lower humidity at 73%. For further insights on February weather conditions, you can visit San Juan weather in February.

When comparing the weather in August and March, a distinct contrast emerges. August is characterized by significantly higher humidity at 87% and considerable rainfall, averaging 609 mm over 29 days, making it one of the wettest months. In contrast, March experiences a more temperate atmosphere with lower humidity at 71% and only 11 mm of precipitation across just 2 days. While the average temperatures in both months hover around 27°C (81°F), March sees slightly cooler nights with a minimum temperature of 21°C (70°F) compared to August's minimum of 24°C (75°F). Notably, March also has a maximum temperature that can reach up to 32°C (91°F). For more detailed insights, check out San Juan weather in March.

In comparing the weather of August and April, August tends to be significantly wetter and more humid. With an average temperature around 27°C (80°F) and high humidity at 87%, it experiences a notable maximum temperature of 31°C (87°F). This month is characterized by 609 mm (24.0 in) of rainfall spread over 29 days. In contrast, April has a similar minimum temperature of 22°C (71°F) and an average of 28°C (82°F), but with lower maximums reaching 32°C (90°F). April boasts much less precipitation, with only 28 mm (1.1 in) recorded over just 6 days, and a lower humidity level of 73%. For more details, you can visit San Juan weather in April.

When comparing the weather in August and May, it's evident that both months experience warm temperatures, with May slightly edging out August in average and maximum temperatures. In May, the temperatures range from a minimum of 24°C (76°F) to a maximum of 32°C (89°F), while August has a slightly lower average of 27°C (80°F) and a maximum of 31°C (87°F). However, August is significantly wetter, receiving 609 mm (24.0 in) of precipitation over 29 days compared to May's 157 mm (6.2 in) over 23 days. Additionally, humidity levels are higher in August at 87%, compared to 77% in May, making August feel more sultry. For more details on May's weather, you can visit San Juan weather in May.

In comparing the weather of June and August, both months feature warm temperatures, but August tends to be slightly cooler with an average of 27°C (80°F) compared to June's 28°C (82°F). Both months experience similar minimum temperatures, but June offers a marginally higher maximum temperature at 32°C (90°F) versus August's 31°C (87°F). However, August sees significantly more rainfall, with 609 mm (24.0 in) of precipitation over 29 days, contrasting with June's 369 mm (14.5 in) across 28 days. Humidity levels are also comparable, with August at 87% and June at 85%. For more detailed information about June weather, visit San Juan weather in June.

In comparing the weather of July and August, both months feature similar temperature ranges, with minimums around 24°C (75°F), averages close to 27°C (81°F for July and 80°F for August), and maximums peaking at 31°C (87°F in August and 88°F in July). However, August experiences significantly higher precipitation, totaling 609 mm (24.0 in) over 29 days compared to July's 533 mm (21.0 in), also spanning 29 days. The humidity levels are quite close, with August at 87% and July at 86%. For a more detailed look at July's weather specifically, check out San Juan weather in July.

August and September weather patterns show some notable similarities and differences. August typically features slightly warmer temperatures, with a minimum of 24°C (75°F) and maximum of 31°C (87°F), compared to September which has a minimum of 23°C (74°F) and a maximum of 32°C (89°F). However, August experiences significantly higher precipitation, totaling 609 mm (24.0 in) over 29 days, while September sees a notable reduction in rainfall to 343 mm (13.5 in) across 26 days. Both months share the same high humidity level of 87%, making the air feel consistently muggy. For a more detailed look at September's weather, you can check San Juan weather in September.

August and October weather in San Juan display notable differences despite their similar average temperatures. In August, the climate tends to be more oppressive, with high humidity at 87% and substantial rainfall totaling 609 mm (24.0 inches) over 29 days. Contrastingly, October experiences slightly cooler minimum temperatures at 22°C (71°F), and while the maximum temperature can peak at 32°C (89°F), it sees significantly less rainfall, with only 165 mm (6.5 inches) over 14 days. The humidity remains high at 86%, but the overall weather in October is generally drier and more pleasant than in August. For more details, check out San Juan weather in October.

In August, the weather is characterized by high humidity and significant rainfall, with average temperatures hovering around 27°C (80°F) and a maximum of 31°C (87°F). This month experiences frequent precipitation, occurring on 29 days and accumulating 609 mm (24.0 in). In contrast, November offers slightly cooler temperatures, with a minimum of 22°C (71°F), an average of 27°C (81°F), and a maximum of 32°C (90°F). The rainfall diminishes significantly to only 71 mm (2.8 in) over just 8 days, while humidity remains high at 89%. For more details, check out San Juan weather in November.

In August, the weather is typically hot and humid, with average temperatures around 27°C (80°F) and maximum highs reaching 31°C (87°F). The month experiences significant rainfall, averaging 609 mm (24.0 in) over 29 days, contributing to a humidity level of 87%. In contrast, December sees slightly cooler temperatures with an average of 26°C (79°F) and minimums around 21°C (70°F). Rainfall drops dramatically to just 27 mm (1.1 in) over 5 days, and humidity remains relatively low at 85%. For more specific details, you can check San Juan weather in December.

Compare San Juan's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in San Juan

As August unfolds in San Juan, the weather is characterized by warm temperatures and high humidity, offering a tropical experience that lingers in the air. Unlike the cooler months, this period sees temperatures consistently hovering around the average of 27°C, accompanied by a significant amount of rainfall—nearly 30 days of precipitation. This makes August one of the wettest months of the year, creating a lush environment but also necessitating preparation for sudden showers. Despite the rain, the warmth remains inviting, making it a unique blend of tropical heat and refreshing downpours. For a deeper understanding of the city's climate, check out San Juan Climate.