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Weather in Lisbon for August 2025

Your guide to Lisbon weather in August - trends and predictions

    Official Weather Alert ⚠️

  • Yellow Heat Warning - See hour by hour.

    • Temperatures

  • The forecast for the first days of August 2025 in Lisbon predicts temperatures to be around 29 °C, close to the historical average.

  • In general, the average temperature in Lisbon at the beginning of August is 29.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.1 °C by the end of August.

    • Rain 🌧️

  • Precipitation in Lisbon during August is a rare event, with an average of fewer than 2 rainy days.

    • More

  • Is August a good time to visit Lisbon? check out the best time to travel to Lisbon page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
31
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/18°
Temperatures
Average wind speed
25 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Lisbon Weather August

Move between months or click on a day
July
September
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Weather Alert Sunny
29°
2
Weather Alert Sunny
29°
3
Sunny
33°
4
Sunny
32°
5
Sunny
30°
6
Sunny
28°
7
Sunny
28°
8
Sunny
27°
9
Sunny
25°
10
Sunny
30°
11
Sunny
30°
12
Sunny
28°
13
Partly cloudy
26°
14
Sunny
28°
15
Sunny
29°
16
Sunny
28°
17
Sunny
28°
18
Sunny
28°
19
Sunny
29°
20
Sunny
29°
21
Sunny
29°
22
Sunny
29°
23
Sunny
30°
24
Sunny
28°
25
Sunny
27°
26
Sunny
27°
27
Sunny
26°
28
Sunny
26°
29
Sunny
25°
30
Partly cloudy
26°
31
Overcast
26°

What’s the Weather Like in Lisbon This August?

Discover the average temperatures and weather trends across Lisbon’s cities this August.
SunnyCascais23 °C / 18 °CSunnyCacém28 °C / 18 °CSunnyAmadora28 °C / 18 °CSunnyQueluz28 °C / 18 °CMore Locations

Temperatures trend during August in Lisbon

See the weather trend as well as the moving average line

August weather in Lisbon day by day

Click on a date for more information
July September
Date Weather Temperatures Rain UV More
1 Aug. Sunny
Sunny
 29° /19° 0 mm 2.3
2 Aug. Sunny
Sunny
 29° /18° 0 mm 2.3
3 Aug. Sunny
Sunny
 33° /20° 0 mm 1.9
4 Aug. Sunny
Sunny
 32° /22° 0 mm 7
5 Aug. Sunny
Sunny
 30° /22° 0 mm 7
6 Aug. Sunny
Sunny
 28° /19° 0 mm 6
7 Aug. Sunny
Sunny
 28° /18° 0 mm 6
8 Aug. Sunny
Sunny
 27° /18° 0 mm 6
9 Aug. Sunny
Sunny
 25° /19° 0 mm 6
10 Aug. Sunny
Sunny
 30° /17° 0 mm 6
11 Aug. Sunny
Sunny
 30° /20° 0 mm 6
12 Aug. Sunny
Sunny
 28° /18° 0 mm 6
13 Aug. Partly cloudy
Partly cloudy
 26° /18° 0 mm 6
14 Aug. Sunny
Sunny
 28° /17° 0 mm 7
15 Aug. Sunny
Sunny
 29° /18° 0 mm 7
16 Aug. Sunny
Sunny
 28° /17° 0 mm 7
17 Aug. Sunny
Sunny
 28° /17° 0 mm 7
18 Aug. Sunny
Sunny
 28° /17° 0 mm 7
19 Aug. Sunny
Sunny
 29° /18° 0 mm 7
20 Aug. Sunny
Sunny
 29° /18° 0 mm 8
21 Aug. Sunny
Sunny
 29° /18° 0 mm 7
22 Aug. Sunny
Sunny
 29° /18° 0 mm 7
23 Aug. Sunny
Sunny
 30° /18° 0 mm 7
24 Aug. Sunny
Sunny
 28° /18° 0 mm 7
25 Aug. Sunny
Sunny
 27° /17° 0 mm 7
26 Aug. Sunny
Sunny
 27° /16° 0 mm 7
27 Aug. Sunny
Sunny
 26° /16° 0 mm 7
28 Aug. Sunny
Sunny
 26° /16° 0.2 mm 7
29 Aug. Sunny
Sunny
 25° /17° 0 mm 6
30 Aug. Partly cloudy
Partly cloudy
 26° /17° 0 mm 7
31 Aug. Overcast
Overcast
 26° /17° 0.1 mm 6
Next
Important Notice
Our weather forecast for Lisbon in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Lisbon forecast closer to your planned date for the most up-to-date weather information.
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Lisbon in August - FAQ

What are the expected maximum and minimum temperatures in Lisbon during August?
During August, expect a variety of temperatures with highs around 27° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Lisbon during August?
Rainfall in Lisbon during August is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Lisbon during August?
The average wind speed in Lisbon during August is 25 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Lisbon in August?

As you prepare for your trip to Lisbon in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Lisbon, during August, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

August rainfall patterns in Lisbon

Explore the daily rainfall trends and prepare for Lisbons August weather 💧

UV exposure in Lisbon during August

Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Provinces in Lisbon
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AmadoraCascaisSintra
Top locations in Lisbon
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AmadoraCacémCascaisQueluz
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Quick links

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Location coordinates Where is Lisbon?

Get accurate weather forecasts for Lisbon, located at latitude 38.717 and longitude -9.133. Stay updated with localized weather information tailored for Lisbon.

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