Month guide · Santo André, Lisbon area

Santo André (Lisbon area) in August: weather and what to expect

In August, Santo André (Lisbon area) averages highs of 26°C and lows of 18°C, with about 1 rainy day and 4 mm of rain. Highs are 1°C warmer than in July and 2°C warmer than in September. Our rules rate it good for beach days, walking and cycling. Crowds in the Lisbon area are at their peak.

Based on 1991-2020 climate data · Updated 1 November 2026 · Sources

Average high Town-level26°CLow 18°C
Sea temperature Modelled19°COpen sea nearby, average for the month
Rainy days Town-level14 mm in total
UV index Modelled8Very high at noon on a clear day
Crowds RegionalPeakThe Lisbon area as a whole

Is August a good time to visit?

Good for

  • Beach days
    Highs of 26°C and about 1 rainy day
  • Walking and cycling
    Highs of 26°C with about 1 rainy day

Not ideal for

Nothing stands out as a weaker fit.

Daily highs through August

Town-level · ERA5-Land 1991-2020
Usual range (8 in 10 years)Typical high

Highs stay about the same through the month.

August in detail

Town-level · ERA5-Land
MeasureJulyAugustSeptember
Average high25°C26°C24°C
Average low18°C18°C17°C
Rainy days (at least 1 mm)014
Total rainfall2 mm4 mm28 mm
Daylight (mid-month)14 h 35 min13 h 41 min12 h 29 min

Crowds, holidays and daylight

Visitor level RegionalPeakNights booked through online platforms in the Lisbon area in August 2025: the busiest month of the year.

Public holidays in August 2027

  • 15 Aug Assumption Day

Local (municipal) holidays are not included.

Daylight mid-month Exact13 h 41 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Santo André
Ferreira do Alentejo, Alentejo32°C158 km
Beringel, Alentejo32°C170 km
Alvito, Alentejo32°C172 km
Aljustrel, Alentejo32°C158 km
Ermidas, Lisbon area32°C136 km

The nearest towns with a warmer August. Distances are in a straight line.

How August is changing

Town-level · ERA5-Land

August highs are 0.9°C warmer than in 1991-2000, and August rainfall is down about 75% (2016-2025 against 1991-2000). Days above 30°C in August went from 1.9 to 2.9 a year on average.

Questions about Santo André (Lisbon area) in August

Is August a good time to visit Santo André (Lisbon area)?

Our rules rate August good for beach days (highs of 26°C and about 1 rainy day); walking and cycling (highs of 26°C with about 1 rainy day).

How warm is Santo André (Lisbon area) in August?

Average highs are 26°C and lows 18°C. July averages 25°C and September 24°C.

Does it rain much in Santo André (Lisbon area) in August?

About 1 day has at least 1 mm of rain, with 4 mm in total over the month.

Is Santo André (Lisbon area) busy in August?

In August 2025, nights booked through online platforms in the Lisbon area were the busiest month of the year, which we count as peak. The figure is for the whole region and leaves out hotels.

How long are the days in Santo André (Lisbon area) in August?

About 13 h 41 min from sunrise to sunset in the middle of the month.

Sources

Climate: ERA5-Land, Copernicus Climate Change Service (C3S) Climate Data Store, contains modified Copernicus information (CC BY 4.0). Crowds: Eurostat, nights spent in short-stay accommodation booked through online platforms (tour_ce_omn12) (CC BY 4.0). Place names and populations: GeoNames (CC BY 4.0). Climate averages cover 1991-2020. Daylight: calculated from the town's coordinates. Full methodology