Weather in Lisbon in August
August in Lisbon is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Portugal, this is how Lisbon actually wears August, not how a country centroid would. August is the peak of the warm side of the year in Lisbon. If you wanted the gentlest heat, this is not that month.
- Average temp
- 24°C
19–28°C
- Rainfall
- 7 mm
Not much rain
- Sunshine
- 10.9 h
hours per day
What to expect
Daytime
Warm days in Lisbon in August. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
Rain is not the story in Lisbon in August. Pack for sun. A shower would be news, not a plan.
Do not build the trip around weather windows. Build it around shade if it is hot, and around getting outside if it is not.
Evening
Evenings stay warm.
What to pack
Sun protection
Where to stay in Lisbon
Dates are a starting point for August.
Travel guides for Lisbon
What to read before you book.
Average weather in Lisbon
TemperatureRainfall
Similar weather in August
Other destinations whose August averages sit close to this one.
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FAQs about Lisbon
Climate averages for Lisbon, 1991–2020.
The best time to visit Lisbon is between May and October, the most comfortable stretch of the year on these averages.
August is the hottest month, with an average around 24°C.
November is the wettest month, with about 121 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
