Last updated: February 24, 2025
August in Lisbon, Portugal is characterized by warm and inviting weather, making it an ideal time for outdoor exploration. With maximum temperatures reaching up to 35°C (95°F) and a pleasant average of 20°C (69°F), the city basks in sunshine, inviting visitors to discover its historic charm. Nighttime offers a refreshing respite, cooling down to a minimum of 16°C (61°F). Remarkably, the month sees a negligible precipitation amount of just 3 mm (0.1 in) across 0 days, allowing for uninterrupted adventures. Coupled with a comfortable humidity level of 60%, August is a prime time to enjoy the vibrant streets, stunning architecture, and cultural richness that Lisbon has to offer.
August in Lisbon embraces the heights of summer, with temperatures often reaching a max of 35°C (95°F), creating the perfect environment for beach lovers and outdoor enthusiasts. The month starts with pleasantly warm lows of 16°C (61°F) and maintains an average temperature of 20°C (69°F), ensuring that the evenings are just as enjoyable as the sun-soaked afternoons. With each passing month, Lisbon's temperatures steadily climb from the cooler winter months, showcasing a clear trend towards warmth and energy as the city basks in the peak of its vibrant summer season. This delightful warmth not only invites visitors to explore its historic neighborhoods but also offers a cozy atmosphere to indulge in the local cuisine as nights stretch long under the starlit sky.
In August, Lisbon basks in the warmth of summer with a strikingly low precipitation amount of just 3 mm (0.1 in), marking it as one of the driest months of the year. This lack of rain, evidenced by zero precipitation days, creates an ideal backdrop for outdoor activities and explorations. As temperatures soar, August stands out in stark contrast to the wetter months that precede and follow it, like October and November, which see significantly higher rainfall. This trend underscores Lisbon's appeal as a sun-soaked destination during the peak of summer, inviting visitors to soak in the vibrant culture and stunning vistas without the interruption of rain.
In August, Lisbon enjoys warm summer days tempered by moderate humidity levels, which sit at a comfortable 60%. This figure reflects a trend of decreasing humidity that began in the late spring, with levels gradually declining from January's high of 85% down to the more pleasant numbers experienced in the summer months. Notably, both July and August share this 60% humidity mark, suggesting a stable and inviting climate for locals and travelers alike. As summer transitions into autumn, the humidity begins to rise again in September, hinting at the upcoming seasonal changes, yet August remains a sweet spot of pleasant warmth with invigorating breezes.
In August, Lisbon continues to bask in very high UV Index levels at 9, slightly lower than the peak seen in June and July. With a burn time of just 15 minutes, sun-seekers should remain vigilant while enjoying the summer rays. This trend of intense sun exposure peaks in the summer months, reflecting the city’s warm climate, before gradually tapering off as autumn approaches. As you soak up the sun, remember to keep your skin protected to enjoy your time outdoors safely. For more details on UV levels throughout the year, check out Lisbon UV Index.
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August in Lisbon is a brilliant tapestry of sunshine, boasting 396 hours of radiant daylight. This warm summer month continues a trend of increasing sun exposure, peaking in July with 423 hours, before gracefully descending in September. Throughout the year, the city witnesses a consistent rise in sunlight, starting from a modest 182 hours in January and flourishing to a vibrant peak in the summer months. By August, visitors can bask in the warmth while enjoying the beautiful vistas, reflecting the essence of Lisbon’s sun-soaked charm. As autumn approaches, the sunlight begins to soften, but even in September, the city still offers a generous 350 hours of sun, extending the joy of summer just a little longer.
Lisbon basks in a plethora of sunny days during August, boasting a remarkable 72% chance of sunshine. This month, nestled in the peak of summer, follows a clear upward trend in sunny weather that begins in spring. Starting with a modest 60% in March, the likelihood of sunny days steadily climbs, reaching a high of 73% in July. As summer progresses, the days grow brighter and warmer, with August promising a delightful mix of sunshine ideal for exploring the city’s beautiful landscapes or lounging on its captivating beaches. With cooler autumn months on the horizon, August stands out as a prime time for sun-seekers looking to soak in the Mediterranean warmth of this vibrant capital.
In August, Lisbon experiences an enjoyable 13 hours of daylight, marking a gentle decline from the sun-soaked peak of 14 hours in the summer months of June and July. As the year progresses, the days gradually shorten, with August still retaining significant light compared to the winter months, where daylight dwindles to just 9 hours in December. This trend illustrates the city's transition from vibrant summer days to the cozy ambiance of autumn, allowing residents and visitors alike to savor the warmth of late summer evenings before the darker months set in.
In August, the winds in Lisbon continue to carry a refreshing embrace, with an average wind speed of 5.2 m/s (12 mph), making it a delightful time to explore the coastal charm of the city. This month showcases a slight dip in wind strength compared to the bustling summer months of July and June, which boast average speeds of 5.7 m/s (13 mph) and 5.5 m/s (12 mph) respectively. Overall, August holds its own against the season's peak, providing a perfect balance that combines warmth with a gentle breeze, ideal for leisurely strolls along the waterfront or enjoying outdoor cafes. Transitioning into September, the winds soften further, hinting at the approaching autumn, yet August remains a prime time to experience the vibrant, invigorating spirit of Lisbon.
The weather in Lisbon changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Lisbon and find detailed weather information for every month.
When comparing the weather in August and January, significant differences are evident. August boasts a warm climate with temperatures ranging from a mild 20°C (69°F) to a scorching 35°C (95°F), accompanied by low humidity (60%) and minimal precipitation—averaging just 3 mm over the month. In contrast, January offers a cooler environment, with temperatures fluctuating between 3°C (38°F) and 19°C (66°F). This winter month is characterized by higher humidity levels (85%) and more substantial rainfall, with an average of 37 mm spread over 5 days. For more detailed insights, you can visit Lisbon weather in January.
August and February in Lisbon offer starkly contrasting weather experiences. August tends to be much warmer, with average temperatures around 20°C (69°F) and highs reaching up to 35°C (95°F), while February is cooler, averaging 13°C (55°F) with a maximum of 21°C (70°F). In terms of precipitation, February is significantly wetter, receiving about 53 mm (2.1 in) over seven days, compared to August, which experiences minimal rain with only 3 mm (0.1 in) on no days. Additionally, humidity levels are higher in February at 75%, compared to 60% in August, making the latter feel much drier. For more detailed insights, check out Lisbon weather in February.
In comparing the weather between August and March, we see notable differences in temperature and precipitation. August presents a much warmer climate, with average temperatures reaching 20°C (69°F) and maximums soaring up to 35°C (95°F), coupled with low humidity at 60% and little to no rainfall. In contrast, March offers a cooler atmosphere, with average temperatures around 14°C (57°F) and a maximum of 23°C (73°F), but it experiences significantly more precipitation, averaging 66 mm (2.6 in) over approximately 8 rainy days and higher humidity at 72%. For more details on March weather, you can check Lisbon weather in March.
When comparing the weather in August and April, significant differences emerge. August boasts much warmer temperatures, with a minimum of 16°C (61°F) and maximums soaring to 35°C (95°F), while April's temperatures start lower, with a minimum of 8°C (46°F) and a maximum of 24°C (75°F). Additionally, August features a dry climate with virtually no precipitation, averaging only 3 mm and registering zero rainy days, whereas April experiences a wetter pattern, receiving about 73 mm of rain over 12 days. Humidity levels are also noteworthy; April is more humid at 70%, compared to August's 60%. For a closer look at April weather conditions, you can visit Lisbon weather in April.
In comparing the weather of August and May, we see a notable contrast in both temperature and precipitation patterns. August boasts warmer temperatures, with a minimum of 16°C (61°F) and an average of 20°C (69°F), peaking at 35°C (95°F). It is characterized by very little rainfall, recording only 3 mm (0.1 in) over the month and experiencing no rainy days, with humidity at a moderate 60%. In contrast, May presents cooler temperatures, featuring a minimum of 10°C (50°F), an average of 17°C (63°F), and a maximum of 30°C (86°F). Rainfall is significantly more frequent in May, with a total of 36 mm (1.4 in) spread over 4 days, and higher humidity levels at 70%. For a more detailed look at the weather during this time, you can check Lisbon weather in May.
In comparing the weather between June and August, August generally experiences warmer temperatures, with average highs reaching up to 35°C (95°F) compared to June's maximum of 32°C (90°F). The minimum temperatures in August are also notably higher, starting at 16°C (61°F), while June begins with a cooler minimum of 13°C (56°F). Additionally, August boasts significantly lower precipitation, with no rainy days recorded, whereas June receives 11 mm (0.4 in) of rainfall spread over three days. Humidity levels are quite similar, with August at 60% and June slightly higher at 63%. For more detailed insights into June's climate, you can explore Lisbon weather in June.
In comparing the weather of August to that of July, we see that August has slightly higher temperatures, with a minimum of 16°C (61°F) and a maximum reaching 35°C (95°F), compared to July's min of 15°C (59°F) and max of 31°C (87°F). Both months experience the same average temperature of 20°C (68°F), but August benefits from significantly less precipitation at just 3 mm (0.1 in), whereas July sees slightly more with 5 mm (0.2 in). Interestingly, both months maintain the same humidity level of 60%. For a detailed overview of July's weather, you can check Lisbon weather in July.
August typically boasts warmer temperatures, with a minimum of 16°C (61°F) and a maximum reaching up to 35°C (95°F). It is a dry month, averaging only 3 mm of precipitation with no rainy days, and maintains a humidity level of around 60%. In contrast, September sees slightly cooler temperatures, with a minimum of 14°C (58°F) and a maximum of 29°C (84°F). This month experiences more precipitation, totaling 27 mm (1.1 in) over two rainy days, along with a modest increase in humidity to 67%. For more detailed information, you can check the Lisbon weather in September.
August weather in Lisbon is characterized by warm temperatures, with a minimum of 16°C (61°F) and a maximum reaching up to 35°C (95°F). The humidity hovers around 60%, and the month generally sees little to no precipitation. In contrast, October experiences cooler temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F). Rainfall becomes more frequent in October, with a total of 46 mm (1.8 in) over five days, and the humidity rises to 74%, contributing to a crisp autumn atmosphere. For more details, you can check Lisbon weather in October.
August and November present stark contrasts in weather patterns. August typically enjoys much warmer temperatures, ranging from a mild minimum of 16°C (61°F) to a blistering maximum of 35°C (95°F), with an average temperature around 20°C (69°F). In contrast, November cools down significantly, featuring a minimum temperature of 9°C (48°F) and a maximum of 23°C (73°F), with an overall average of 15°C (59°F). Additionally, August is characterized by little to no rainfall, recording only 3 mm (0.1 in) across the month, whereas November sees substantial precipitation, totaling 80 mm (3.2 in) over approximately 11 days. The humidity levels also shift notably, rising from a comfortable 60% in August to a damp 83% in November. For more details on November's climate, check out Lisbon weather in November.
In August, the weather is warm and dry, with temperatures ranging from a pleasant 20°C (69°F) on average to highs that can reach up to 35°C (95°F). With only 3 mm (0.1 in) of precipitation and a humidity level of 60%, it offers a perfect backdrop for summer activities. In contrast, December brings cooler temperatures, averaging around 13°C (56°F), with minimal highs of 18°C (65°F) and lows that can drop to 6°C (43°F). The month is significantly wetter, with 62 mm (2.4 in) of rainfall spread over 8 days and a higher humidity of 85%. For more details, check out Lisbon weather in December.
In August, Lisbon basks in warm, sunny days, marking a distinct departure from the cooler months of the year. With an average temperature that hovers around a pleasant 20°C, the city experiences its peak warmth, often soaring to a scorching 35°C, while enjoying almost no precipitation—a stark contrast to the rainier winter months. Humidity remains moderate at 60%, making the heat more bearable for visitors. The dry climate invites exploration of the city's stunning landscapes and rich culture, truly showcasing the vibrant allure of Lisbon in summer. For a deeper understanding of what to expect throughout the year, visit Lisbon Climate.