Month guide · Campo Maior, Portugal

Campo Maior in August: weather and what to expect

In August, Campo Maior is among the 100 warmest of 759 towns in Portugal. August highs in Campo Maior are now 2.6°C warmer than in 1991-2000. In August, Campo Maior averages highs of 33°C and lows of 19°C, with about 1 rainy day and 5 mm of rain. Crowds in the Alentejo are at their peak.

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

Average high Town-level33°CLow 19°C
Rainy days Town-level15 mm in total
UV index Modelled8Very high at noon on a clear day
Crowds RegionalPeakThe Alentejo as a whole

Is August a good time to visit?

Good for

No verdicts for Campo Maior in August yet. They only use climate values that are precise enough to judge with.

Not ideal for

  • Outdoor activity at midday
    Average highs of 33°C

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. A day above 40°C happens in roughly 1 August in 6; nights below 15°C in about 1 in 2.

August in detail

Town-level · ERA5-Land
MeasureJulyAugustSeptember
Average high33°C33°C28°C
Average low19°C19°C17°C
Rainy days (at least 1 mm)114
Total rainfall3 mm5 mm27 mm
Daylight (mid-month)14 h 40 min13 h 44 min12 h 30 min

Crowds, holidays and daylight

Visitor level RegionalPeakNights booked through online platforms in the Alentejo 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 44 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Campo Maior
Moura, Alentejo33°C1103 km
Reguengos de Monsaraz, Alentejo33°C177 km
Serpa, Alentejo33°C1128 km
Aldeia Nova, Alentejo33°C1125 km
Vidigueira, Alentejo33°C1110 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 2.6°C warmer than in 1991-2000, and August rainfall is down about 60% (2016-2025 against 1991-2000). Days above 35°C in August went from 7.4 to 14 a year on average.

Questions about Campo Maior in August

Is August a good time to visit Campo Maior?

It is less suited to outdoor activity at midday (average highs of 33°C).

How warm is Campo Maior in August?

Average highs are 33°C and lows 19°C. July averages 33°C and September 28°C.

Does it rain much in Campo Maior in August?

About 1 day has at least 1 mm of rain, with 5 mm in total over the month.

Is Campo Maior busy in August?

In August 2025, nights booked through online platforms in the Alentejo 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 Campo Maior in August?

About 13 h 44 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