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Lisbon in August: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Lisbon in August will be like? Take a look at our weather guide for Lisbon, based on historical data.
Check flight prices to Lisbon on Avionero:
August

Weather in Lisbon in August 2024

Great Weather
Warm
☀️
Sunny
✈️
$698 - $1,023
If you're looking for a destination with great weather in August, look no more – Lisbon is a perfect choice. Expect average maximum temperatures of +81°F and plenty of sunshine, with around 23 sunny days. Just keep in mind that there may be some rainfall, with approximately 3 mm of precipitation over an average of 0 rainy days. So, pack your sunglasses, a beach towel, and great walking shoes, as it's most likely going to be amazing weather. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Lisbon;

Average weather

☀️
+81°F
Avg. max. temperature
+59°F
Min.
+106°F
Max.
3 mm
Total precipitation
65%
Avg. humidity
4 m/s
Avg. wind
23 ☀️
Sunny Days
8 ⛅️
Cloudy
0 🌦
Rainy
Our opinion: Lisbon has great weather in August.

Average temperature in Lisbon in August

Here are the expected maximum, average and minimum temperatures in Lisbon for August based on the historical data.
Last Year
Historical Data

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:

Travel to Lisbon

Click to see more details
✈️
64
Flights per week
$698
Min. Price
$1,023
Max. Price

Climate in Lisbon in August

Lisbon weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
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 mm3 mm30 mm
Wind
4 m/s4 m/s3 m/s
Humidity
65%65%67%
Air pressure
1016 HPa1015 HPa1016 HPa
Sunny days
212319
Cloudy days
1089
Rainy days
002
Snowy days
000

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

Wind speed in Lisbon in August based on historical data.
Last Year
Historical Data

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?

This is the weather in Lisbon in August 2023:
1 August
☀️
+89°F
2 August
☀️
+84°F
3 August
☀️
+79°F
4 August
☁️
+76°F
5 August
☁️
+79°F
6 August
☁️
+74°F
7 August
☀️
+76°F
8 August
☀️
+76°F
9 August
☀️
+80°F
10 August
☀️
+77°F
11 August
☀️
+77°F
12 August
☀️
+81°F
13 August
☀️
+80°F
14 August
☀️
+78°F
15 August
☀️
+79°F
16 August
☀️
+77°F
17 August
☀️
+75°F
18 August
☀️
+85°F
19 August
☀️
+95°F
20 August
☀️
+91°F
21 August
☀️
+83°F
22 August
☀️
+85°F
23 August
☀️
+85°F
24 August
☀️
+76°F
25 August
☁️
+79°F
26 August
☀️
+77°F
27 August
☀️
+77°F
28 August
☀️
+74°F
29 August
☀️
+77°F
30 August
☀️
+79°F
31 August
☀️
+80°F
In August 2023 Lisbon had 27 sunny days, 4 cloudy days, and 0 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +95°F and a minimum of +73°F. The average humidity was 67%, with a maximum of 91% and a minimum of 18%. The average wind speed was 6 m/s, with a maximum of 17 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Lisbon climate has changed over the last 43 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

Frequently asked questions about the weather in Lisbon in August:

Is August a good time to visit Lisbon?

Yes, August is a great time to go to Lisbon, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Lisbon.

Can you sunbathe in Lisbon in August?

August is warm in Lisbon. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Lisbon rainy in August?

Lisbon is usually dry in August. Plan your packing around outdoor activities and exploring.

Is it sunny in Lisbon in August?

Yes, Lisbon is sunny in August. Prepare for lots of rays. Don’t forget to pack your sunglasses and sunscreen, and maybe pick up a wide-brimmed hat when you arrive.

How much does it cost to fly to Lisbon in August?

The normal prices to fly to Lisbon is $698 - $1,023. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.

Other cities in Portugal

Check out the weather for 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.