Weather in Lisbon in August 2024
- August is usually the hottest month of the year in Lisbon;
Average weather
Average temperature in Lisbon in August
The expected average maximum temperature in August is +81°F with a maximum of +95°F and a minimum of +61°F.
The average maximum temperature goes down 26% by the end of the month, compared with the beginning of the month, from +90°F to +81°F.
Is Lisbon warm or cold in August?
Lisbon is typically warm in August.
Maximum temperatures go up compared to the previous month from +79°F to +81°F. The minimum temperature also goes up from +64°F to +64°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is the hottest month in Lisbon, here is the comparison with other months:
Climate in Lisbon in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +79°F | +81°F | +77°F | ||||
| Min. temperature | ||||||
| +59°F | +59°F | +55°F | ||||
| Max. temperature | ||||||
| +104°F | +106°F | +102°F | ||||
| Rainfall | ||||||
| 2 mm | 3 mm | 30 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 3 m/s | ||||
| Humidity | ||||||
| 65% | 65% | 67% | ||||
| Air pressure | ||||||
| 1016 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 21 | 23 | 19 | ||||
| Cloudy days | ||||||
| 10 | 8 | 9 | ||||
| Rainy days | ||||||
| 0 | 0 | 2 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as great as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +79°F to +81°F during the day. Prepare for more rain. Average rainfall goes from 2 mm to 3 mm. Humidity levels don’t change as the month goes on, averaging around 65%. The average wind speed doesn’t change much during August, staying around 4 m/s. The good news is there are likely to be more sunny days in August, from 21 to 23.
September brings much the same weather, it remains great.
Wind
The average wind speed is 6 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Lisbon is gradually increasing during August, going from 4 m/s to 6 m/s over the course of the month.
How was the weather last August in Lisbon?
Climate Change Over the Years
The climate in Lisbon in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+80°F) and the highest in 2018 (+90°F). The driest year was 1983 with only 0 mm of rainfall, and the wettest year was 2022 with 0 mm.
FAQ
Is August a good time to visit Lisbon?
Can you sunbathe in Lisbon in August?
Is Lisbon rainy in August?
Is it sunny in Lisbon in August?
Other cities in Portugal
Monthly weather in Lisbon
Source of the data
For this page, we’ve looked at the typical weather in Lisbon, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.