Weather in Lisbon for August 2025
In general, the average temperature in Lisbon at the beginning of August is 29 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.3 °C by the end of August.
Precipitation in Lisbon during August is a rare event, with an average of fewer than 2 rainy days.
Is August a good time to visit Lisbon? check out the best time to travel to Lisbon page.
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Lisbon in August average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2  27° | 3 27° | ||||
| 4 30° | 5 30° | 6 31° | 7 30° | 8 28° | 9  29° | 10 30° |
| 11 30° | 12 28° | 13 26° | 14 26° | 15  29° | 16 30° | 17 28° |
| 18 27° | 19 28° | 20 29° | 21 30° | 22 29° | 23 30° | 24 29° |
| 25 28° | 26 27° | 27 26° | 28 27° | 29 25° | 30 26° | 31 25° |
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Temperatures trend during August in Lisbon
August weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Sunny | 28° /18° | 0 mm | 7 | |
| 2 Aug. | Patchy rain possible | 27° /17° | 0.1 mm | 7 | |
| 3 Aug. | Sunny | 27° /17° | 0 mm | 7 | |
| 4 Aug. | Sunny | 30° /17° | 0 mm | 8 | |
| 5 Aug. | Sunny | 30° /18° | 0 mm | 8 | |
| 6 Aug. | Sunny | 31° /18° | 0 mm | 8 | |
| 7 Aug. | Sunny | 30° /20° | 0 mm | 8 | |
| 8 Aug. | Sunny | 28° /18° | 0 mm | 8 | |
| 9 Aug. | Partly cloudy | 29° /18° | 0 mm | 8 | |
| 10 Aug. | Sunny | 30° /19° | 0 mm | 8 | |
| 11 Aug. | Sunny | 30° /18° | 0 mm | 8 | |
| 12 Aug. | Partly cloudy | 28° /18° | 0 mm | 7 | |
| 13 Aug. | Sunny | 26° /17° | 0 mm | 7 | |
| 14 Aug. | Partly cloudy | 26° /17° | 0 mm | 7 | |
| 15 Aug. | Overcast | 29° /17° | 0 mm | 7 | |
| 16 Aug. | Sunny | 30° /18° | 0 mm | 8 | |
| 17 Aug. | Partly cloudy | 28° /18° | 0 mm | 8 | |
| 18 Aug. | Partly cloudy | 27° /19° | 0 mm | 7 | |
| 19 Aug. | Partly cloudy | 28° /18° | 0 mm | 7 | |
| 20 Aug. | Sunny | 29° /19° | 0 mm | 8 | |
| 21 Aug. | Sunny | 30° /18° | 0 mm | 8 | |
| 22 Aug. | Sunny | 29° /19° | 0 mm | 7 | |
| 23 Aug. | Sunny | 30° /19° | 0 mm | 7 | |
| 24 Aug. | Sunny | 29° /19° | 0 mm | 8 | |
| 25 Aug. | Partly cloudy | 28° /17° | 0 mm | 7 | |
| 26 Aug. | Sunny | 27° /16° | 0 mm | 7 | |
| 27 Aug. | Sunny | 26° /16° | 0 mm | 7 | |
| 28 Aug. | Sunny | 27° /16° | 0 mm | 7 | |
| 29 Aug. | Sunny | 25° /17° | 0 mm | 6 | |
| 30 Aug. | Partly cloudy | 26° /17° | 0 mm | 7 | |
| 31 Aug. | Overcast | 25° /17° | 0 mm | 6 | |
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Guide for Lisbon in August
In August, Lisbon, Portugal experiences warm and sunny weather, making it an ideal time to visit this beautiful city. At the beginning of the month, the weather in Lisbon is typically hot and dry, with temperatures averaging around 28° during the day and 18° at night.
The city enjoys long hours of sunshine, perfect for exploring the historic streets, enjoying the stunning views, and relaxing on the beautiful beaches along the coast.
Towards the end of August, the weather in Lisbon remains warm and pleasant, with temperatures slightly cooling down compared to the beginning of the month. Daytime temperatures hover around 26°, while nighttime temperatures drop to around 17°.
Visitors can still expect plenty of sunshine and minimal rainfall, providing excellent conditions for outdoor activities and sightseeing.
Overall, August offers fantastic weather for travelers to enjoy all that Lisbon has to offer, from its rich culture and history to its delicious cuisine and vibrant atmosphere.
Whether strolling through the charming neighborhoods or taking in the breathtaking views of the Tagus River, visitors can look forward to delightful weather throughout the month.
Lisbon in August - FAQ
What to pack to Lisbon in August?
As you prepare for your trip to Lisbon in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Lisbon, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
August rainfall patterns in Lisbon
UV exposure in Lisbon during August
Quick links
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