Hottest (avg)
#1 / 12
Lisbon in August
August weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 14h
What to expect
August marks a typically warm period of summer, where the weather is warming up. Daytime highs average 27°C / 80°F, dropping to 19°C / 65°F at night.
The atmosphere is generally sunny and dry, perfect for uninterrupted outdoor plans. The sun is very strong at this time of year, making sun protection essential during the day.
Statistically, this is the hottest month of the year.
August in context
How it compares to the rest of the year in Lisbon.
Wettest (avg)
#2 / 12
Daylight Hours
#4 / 12
Windiest (avg)
#2 / 12
Highest UV
#4 / 12
Most Humid
#12 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
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Sunshine
- Daylight
- 13.6 hours
- UV index (max)
- 8
- Typical sun hours
- 05:51 – 19:29
Rain & Snow
- Total
-
- Rainy days
- 2
- Cloud cover
- 25%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 70%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is August a good time to visit Lisbon?
Typical August days in Lisbon reach highs of 27°C (81°F) with nights around 19°C (66°F). It usually feels warm by day and mild after dark. It is one of the drier months, which suits outdoor exploring and sightseeing.
What are temperatures like in August?
Daytime temperatures in August typically peak near 27°C (81°F), while nights drop to around 19°C (66°F). Expect warm afternoons and mild evenings.
How much does it rain in August?
Rainfall in August averages 4 mm (0.16 in) across roughly 2 days. Overall it is a mostly dry time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in August?
You can expect about 14 hours of daylight in August. Sunrise is typically around 05:51 and sunset near 19:29. You get long days with comfortable amounts of daylight.
How strong is the sun in August?
UV levels frequently reach very high levels (around 8), so strong sun protection is essential, especially around midday.
Is it windy in August?
In August, average wind speeds are around 17 km/h (11 mph), with gusts on the windiest days reaching about 52 km/h (32 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.