Lisbon Weather in August

The climate in Lisbon during August can be summarized as warm, humid and a little damp.

August is in the summer in Lisbon and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 15°C (59°F) is normal.

On average August is the 6th wettest month of the year in Lisbon with around 85mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.8 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Lisbon in August 2024.