Last updated: August 27, 2025
In August, San Francisco, Panama, experiences a tropical climate characterized by warm temperatures and high humidity levels. Daytime highs reach up to 33°C (91°F), while the average temperature hovers around a comfortable 25°C (78°F). Nights cool down to a minimum of 21°C (70°F), providing relief from the daytime heat. However, this month is also notable for its significant rainfall, with a substantial total of 359 mm (14.1 in) recorded over 29 days. The average humidity remains high at 87%, creating a muggy atmosphere that defines the region's vibrant, lush landscape.
In August, temperatures in San Francisco and Panama offer a delightful warm embrace, although variations are evident. San Francisco experiences a comfortable range with minimums around 21°C (70°F), averaging 25°C (78°F), and peaking at a maximum of 33°C (91°F). This mild weather creates a perfect backdrop for outdoor adventures. Meanwhile, Panama maintains a consistent tropical warmth, with minimum temperatures also starting at 21°C (70°F), an average close to 25°C (78°F), and similarly reaching up to 33°C (91°F). As the summer months draw to a close, both cities reveal a harmonious blend of comfortable warmth, making them enticing destinations for travelers seeking sun without the extremes. The slight cooling in average temperatures from preceding months marks an anticipated transition towards the more refreshing late summer days ahead.
In August, San Francisco, Panama experiences a significant amount of rainfall, with an impressive 359 mm (14.1 in) recorded over 29 days of precipitation. This month follows a trend of increasing moisture, escalating from a modest 105 mm (4.1 in) in April to the peaks seen in July and August, where rainfall reaches over 350 mm (13.9 in). The wet season is at its height, drawing residents and visitors alike into the lush, vibrant landscapes nourished by the relentless downpours. This rainy period not only revitalizes the environment but also sets the stage for an autumn filled with thriving flora, illustrating the dynamic interplay between rainfall and the region's rich, tropical ecology.
In August, San Francisco, Panama, experiences a notable transition in humidity levels, with a reading of 87%. This month marks a continuation of the high humidity trend that peaks in the early summer, specifically in June with 90% and remains high through July. Although August shows a slight dip from the previous months, the humidity stays significantly elevated, aligning closely with the readings of September. This consistency suggests a tropical climate influence, as the humidity remains above 85% from June through September, providing a vivid reminder of the lush, verdant environment typical of this region. As the year progresses into the cooler months, the humidity gradually tapers off, highlighting a clear seasonal pattern that ebbs and flows throughout the year.
In August, San Francisco, Panama, maintains a UV Index of 13, categorizing it as extreme exposure with a swift burn time of just 10 minutes. This month aligns closely with the previous summer months, wherein the UV Index fluctuated between 13 and 15. Notably, the trend reveals a fairly consistent pattern of heightened UV exposure throughout the year, particularly from March to May when the index peaks at 14 or 15. Travelers and locals alike should remain vigilant about sun protection, as the intensity remains high even into late summer. For more details and insights, check out San Francisco UV Index.
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August in San Francisco presents a subtle dip in sunshine, with 207 hours of bright daylight, marking the peak of summer's fade into early autumn. This month contrasts sharply with the sun-drenched months of March and April, which basked in 335 and 300 hours of sunshine respectively, showcasing a seasonal shift. The summer months of June and July also trail behind, revealing a gradual decrease in sunlight hours. Interestingly, September sees a slight recovery with 217 hours of sunshine, hinting that San Francisco's summer charm often lingers a little longer in the year. As we move toward winter, the city enjoys a resurgence in sunshine, with October and November bringing wholesome hours of brightness, suggesting that San Francisco's unique climate offers a continual embrace of the sun, even as the seasons change.
In San Francisco, Panama, the likelihood of sunny weather takes a significant dip in August, with only a 5% chance of sunshine. This trend marks a stark contrast to the sunnier months earlier in the year, particularly January when the sun shines 45% of the time. As we progress from spring into summer, the chances of clear skies continue to decline, reaching their lowest point in August before slightly rising again in September to 11%. This pattern highlights a distinct shift in weather trends, suggesting that those seeking sunshine in San Francisco might want to plan their visits earlier in the year for a better chance of enjoying the sun.
In August, San Francisco and Panama both enjoy a consistent 12 hours of daylight, reflecting a trend of stability as summer winds down. This duration remains unchanged from the previous months of June and July, showcasing a peak in daylight that envelops these vibrant cities in warmth and activity. As summer transitions into fall, daylight begins to taper off, with both locations trending toward 11 hours of daylight by October. This gradual decrease underscores the unique climatic rhythms that define these cities, where even as the seasons shift, the balance of day and night remains notably consistent throughout much of the year.
As August rolls into San Francisco, the city's characteristic breezes begin to mellow, with average wind speeds settling around 1.4 m/s (3 mph). This slight uptick from the summer's low points reflects a subtle transition as the region shifts towards autumn. Notably, the months leading up to August feature higher winds suited for the summer sea air, particularly March, which peaks at 3.3 m/s (7 mph). However, as the year progresses into the warmer months of June and July, the winds calm significantly. This trend suggests that while San Francisco's charm includes those lively summer gales, the late summer months introduce a comforting stillness that gently ushers in the changing season, offering a serene backdrop for urban exploration.
Weather in San Francisco varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Francisco, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January contrast significantly in terms of weather conditions. While both months see similar maximum temperatures reaching up to 33°C (91°F), August is characterized by much higher humidity at 87% and substantial rainfall, with an average precipitation of 359 mm (14.1 in) over 29 days. In contrast, January offers a drier atmosphere with only 31 mm (1.2 in) of rain and significantly fewer rainy days—just four. The humidity in January also drops to 72%, making it a more comfortable month for outdoor activities compared to the heavy, humid conditions of August. For more information, you can check San Francisco weather in January.
August and February present contrasting weather conditions. In August, temperatures range from a minimum of 21°C (70°F) to a sizzling maximum of 33°C (91°F), accompanied by high humidity levels of 87%. This month also sees significant precipitation, with 359 mm (14.1 in) spread over 29 days, creating a decidedly wet atmosphere. In stark contrast, February enjoys warmer average temperatures, including a minimum of 20°C (68°F) and a maximum of 34°C (94°F), but experiences negligible rainfall, with only 8 mm (0.3 in) over zero days. The humidity in February is lower at 71%, making the overall feel much drier and more comfortable. For a detailed look at the weather in February, visit San Francisco weather in February.
When comparing the weather in August and March, there are notable differences in temperature, precipitation, and humidity. In August, the minimum temperature is 21°C (70°F), with an average of 25°C (78°F) and a maximum of 33°C (91°F), accompanied by a high humidity level of 87%. This month is characterized by significant rainfall, totaling 359 mm (14.1 in) over 29 days. In contrast, March features similar minimum temperatures at 21°C (70°F), but the average rises to 27°C (81°F) with a maximum of 34°C (94°F). March enjoys much drier conditions, with only 7 mm (0.3 in) of precipitation over 0 days and lower humidity at 69%. For more detailed insights, you can visit San Francisco weather in March.
In comparing the weather of August and April, we observe notable differences in temperature and precipitation patterns. April features a minimum temperature of 21°C (70°F) and averages a comfortable 27°C (81°F), with peak temperatures reaching as high as 36°C (96°F). However, during this month, rainfall is relatively low at 105 mm (4.1 in) over just 12 days, combining to create a moderate humidity level of 70%. In contrast, August presents a different climate experience, where the temperatures range from a minimum of 21°C (70°F) to an average of 25°C (78°F), peaking at 33°C (91°F). However, it brings significantly heavier rainfall of 359 mm (14.1 in) spread across 29 days, contributing to a much higher humidity level of 87%. This stark contrast showcases April as a warmer and drier month compared to the wetter and cooler conditions of August. For more detailed insights, explore San Francisco weather in April.
When comparing the weather in August and May, we observe some interesting patterns. August tends to be slightly cooler, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 33°C (91°F), while May has a higher average maximum temperature of 35°C (96°F) despite a similar minimum temperature. Precipitation levels are closely matched, with August receiving 359 mm (14.1 in) over 29 days and May slightly less at 355 mm (14.0 in) over 27 days. Notably, humidity is higher in August at 87%, compared to May's 73%. For more details on May weather specifically, check out this link: San Francisco weather in May.
When comparing the weather in August and June, we see some similarities as well as notable differences. Both months experience warm temperatures, with August having a minimum temperature of 21°C (70°F) and a maximum of 33°C (91°F), similar to June's range of 21°C (70°F) to 33°C (92°F). However, August typically has a slightly lower average temperature at 25°C (78°F) compared to June's 26°C (78°F). Precipitation is abundant in both months, with August receiving 359 mm (14.1 in) over 29 days, closely matching June's 353 mm (13.9 in) over 28 days. Humidity levels are also high, with August at 87% and June slightly higher at 90%. For more detailed insights, you can check the San Francisco weather in June.
In comparing the weather of August and July, both months exhibit similar temperature ranges, with July being slightly warmer on average, boasting a mean temperature of 26°C (78°F) compared to August's 25°C (78°F). The maximum temperatures remain nearly identical, reaching 33°C (91°F) in August and just slightly higher at 33°C (92°F) in July. However, precipitation patterns differ notably; August experiences a total of 359 mm (14.1 in) of rain over 29 days, while July has a higher total precipitation of 404 mm (15.9 in) across 28 days. Humidity levels are also similar, with August at 87% and July slightly higher at 88%. For a more detailed overview, you can explore San Francisco weather in July.
In August, temperatures typically range from a minimum of 21°C (70°F) to a maximum of 33°C (91°F), with an average of 25°C (78°F). The month sees considerable rainfall, accumulating 359 mm (14.1 in) over 29 days, all while maintaining a humidity level of 87%. In contrast, September experiences a similar temperature profile, with minimum and average temperatures remaining unchanged at 21°C (70°F) and 25°C (78°F), respectively, but peaking slightly lower at 32°C (91°F). Notably, September has a higher total precipitation of 459 mm (18.1 in) over 30 days, maintaining the same humidity level of 87%. For more details on average weather conditions, refer to San Francisco weather in September.
In August, the weather tends to be warm with a minimum temperature of 21°C (70°F) and an average high of 33°C (91°F). The month is characterized by high humidity at 87% and significant rainfall, with 359 mm (14.1 in) of precipitation spread across 29 days. Conversely, in October, temperatures remain relatively similar, with a minimum of 21°C (69°F) and a maximum of 32°C (90°F). However, October experiences even higher precipitation levels at 410 mm (16.2 in), while the humidity slightly drops to 86% over the same number of rainy days. For a more detailed overview of October weather, you can visit San Francisco weather in October.
In comparing August and November, both months feature similar minimum and average temperatures, with August reaching a maximum of 33°C (91°F) compared to November's 32°C (90°F). However, November experiences slightly higher precipitation at 385 mm (15.1 in) over 26 days, while August has 359 mm (14.1 in) spread across 29 days. Humidity remains consistent between the two months, hovering around 86-87%. For more detailed information on November weather, you can visit San Francisco weather in November.
In comparing the weather of August and December, both months exhibit relatively warm temperatures, with December experiencing slightly lower highs and lows. August sees a maximum temperature of 33°C (91°F) and an average of 25°C (78°F), while December has a maximum of 32°C (90°F) and an average of 26°C (78°F). Precipitation is significantly higher in August, with 359 mm (14.1 in) falling over 29 days, compared to December's 103 mm (4.1 in) over just 9 days. Additionally, humidity levels are more intense in August at 87%, compared to December's 79%. For more detailed information, check out San Francisco weather in December.
As August unfolds in San Francisco, it brings a unique blend of warmth and humidity that sets it apart from the city's typically cooler months. With temperatures peaking at a maximum of 33°C (91°F), this is the hottest time of the year, creating a stark contrast to the mild conditions of spring and early summer. However, residents should also prepare for frequent rain, as August experiences a notable 29 days of precipitation, accumulating a substantial amount. The high humidity levels, averaging 87%, add to the stickiness of summer, making it feel warmer than it actually is. This month encapsulates the dynamic nature of San Francisco weather, where summer warmth can quickly shift to cool, damp breezes. For more insights on climate patterns in this vibrant city, visit San Francisco Climate.