For those searching for an ideal August holiday with excellent weather, Lisbon is a perfect choice. Average maximum temperatures are +81°F. Expect about 22 sunny days, making it the perfect place to enjoy the sunshine. It's worth noting that there may be some rainfall, with an average of 4 mm of precipitation over 2 rainy days. So, take your sunglasses, a beach towel, and great walking shoes, as it looks like amazing weather. Search flightsin one click on Avionero.
Good to know:
August is usually the hottest month of the year in Lisbon;
August is usually the driest month of the year in Lisbon
Average weather
☀️
+81°F
Avg. max. temperature
+59°F
Min.
+106°F
Max.
4 mm
Total precipitation
65%
Avg. humidity
4 m/s
Avg. wind
22 ☀️
Sunny Days
7 ⛅️
Cloudy
2 🌦
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 temperature in August is +86°F on average, with a range between a maximum of +97°F during the day and a minimum of +63°F at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +84°F to +84°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:
Water temperature in Lisbon in August
Water in Lisbon in August is Fresh. It varies from +63°F to +72°F, with an average of +67°F.The air temperature averaging +81°F is higher than the water temperature.
The water temperature in August is one of the warmest of the entire year:
The warmest water temperatures in Lisbon are reached in October, when the average sea temperature rises to +68°F. The coldest water temperatures are in March, with an average of +59°F.
Can you swim in Lisbon in August?
Water temperature (+67°F) in Lisbon in August might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Travel to Lisbon
Click to see more details
✈️
68
Flights per week
$698
Min. Price
$1,023
Max. Price
Airlines with direct connections:
Brussels Airlines
Air France
Lufthansa
TAP Portugal
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Climate in Lisbon in August
Lisbon weather looks like this, on average, in August and the surrounding months.
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
4 mm
34 mm
Wind
4 m/s
4 m/s
3 m/s
Avg. water temperature
+66°F
+67°F
+68°F
Humidity
66%
65%
67%
Air pressure
1016 HPa
1016 HPa
1016 HPa
Sunny days
20
22
18
Cloudy days
9
7
6
Rainy days
2
2
5
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 4 mm.It feels drier, as humidity decreases from 66% to 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 20 to 22.
September brings much the same weather, it remains great.
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 13 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 decreasing during August, going from 8 m/s to 7 m/s over the course of the month.
Rain
Amount of rainfall in mm during August in Lisbon based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in August stands at 6%, leading to total precipitation of around 35 mm. The maximum amount of rainfall per day is around 23 mm, which is considered light rain.Lisbon is amazing in August with as little as 2 rainy days on average, so plan adventures in the great outdoors.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Lisbon wettest month is December, where a typical day has a 42% chance of precipitation and 122 mm of rainfall per day. July, on the other hand, is the driest month with a mere 6% chance of precipitation and 2 mm of rainfall per day.
How was the weather last August in Lisbon?
This is the weather in Lisbon in August 2023:
1 August
☀️
+83°F
2 August
☁️
+84°F
3 August
☀️
+77°F
4 August
☀️
+86°F
5 August
☀️
+95°F
6 August
☀️
+93°F
7 August
☀️
+96°F
8 August
☀️
+80°F
9 August
☀️
+81°F
10 August
☀️
+89°F
11 August
☀️
+89°F
12 August
☀️
+87°F
13 August
☀️
+78°F
14 August
☀️
+81°F
15 August
☀️
+82°F
16 August
☀️
+80°F
17 August
☀️
+83°F
18 August
☀️
+78°F
19 August
☀️
+83°F
20 August
☀️
+91°F
21 August
☀️
+96°F
22 August
☀️
+94°F
23 August
☀️
+94°F
24 August
☀️
+94°F
25 August
☀️
+88°F
26 August
☀️
+78°F
27 August
☀️
+78°F
28 August
☀️
+80°F
29 August
☀️
+79°F
30 August
☀️
+79°F
31 August
☀️
+85°F
In August 2023 Lisbon had 30 sunny days, 1 cloudy days, and 0 rainy days. The average maximum temperature was +86°F, with an absolute maximum of +97°F and a minimum of +77°F. The average humidity was 75%, with a maximum of 100% and a minimum of 36%. The average wind speed was 6 m/s, with a maximum of 27 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 1979 (+65°F) and the highest in 2017 (+72°F). The driest year was 1992 with only 298 mm of rainfall, and the wettest year was 2022 with 2338 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.
Can you swim in Lisbon in August?
In general, you can swim in Lisbon in August, if you want to, at an average water temperature of +67°F. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
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.
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, 2023.
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.
