Month guide · Silves, Portugal

Silves in August: weather and what to expect

In August, Silves averages highs of 31°C and lows of 19°C, with about 1 rainy day and 3 mm of rain. Highs are about the same as in July and 3°C warmer than in September. Our rules rate it good for beach days. Crowds in the Algarve are at their peak.

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

Average high Town-level31°CLow 19°C
Rainy days Town-level13 mm in total
UV index Modelled9Very high at noon on a clear day
Crowds RegionalPeakThe Algarve as a whole

Is August a good time to visit?

Good for

  • Beach days
    Highs of 31°C and about 1 rainy days

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 fall about 2°C over the month.

August in detail

Town-level · ERA5-Land
MeasureJulyAugustSeptember
Average high31°C31°C28°C
Average low19°C19°C18°C
Rainy days (at least 1 mm)014
Total rainfall2 mm3 mm25 mm
Daylight (mid-month)14 h 30 min13 h 38 min12 h 29 min

Crowds, holidays and daylight

Visitor level RegionalPeakNights booked through online platforms in the Algarve 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 38 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Silves
Alcantarilha, Algarve31°C110 km
Pêra, Algarve31°C111 km
Algoz, Algarve31°C112 km
Guia, Algarve31°C114 km
Armação de Pêra, Algarve31°C112 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 2.2°C warmer than in 1991-2000 (2016-2025 against 1991-2000). Days above 35°C in August went from 1.9 to 4.9 a year on average.

Questions about Silves in August

Is August a good time to visit Silves?

Our rules rate August good for beach days (highs of 31°C and about 1 rainy days).

How warm is Silves in August?

Average highs are 31°C and lows 19°C. July averages 31°C and September 28°C.

Does it rain much in Silves in August?

About 1 day has at least 1 mm of rain, with 3 mm in total over the month.

Is Silves busy in August?

In August 2025, nights booked through online platforms in the Algarve 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 Silves in August?

About 13 h 38 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