Month guide · Póvoa de Santa Iria, Portugal

Póvoa de Santa Iria in August: weather and what to expect

In August, Póvoa de Santa Iria averages highs of 29°C and lows of 18°C, with about 2 rainy days and 7 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. Crowds in the Lisbon area are at their peak.

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

Average high Town-level29°CLow 18°C
Sea temperature Modelled18°COpen sea nearby, average for the month
Rainy days Town-level27 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 29°C and about 2 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 stay about the same through the month.

August in detail

Town-level · ERA5-Land
MeasureJulyAugustSeptember
Average high28°C29°C27°C
Average low18°C18°C17°C
Rainy days (at least 1 mm)125
Total rainfall4 mm7 mm34 mm
Daylight (mid-month)14 h 39 min13 h 44 min12 h 30 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 44 minSunrise to sunset, calculated from the town's coordinates.

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

How August is changing

Town-level · ERA5-Land

August highs are 1.1°C warmer than in 1991-2000, and August rainfall is down about 80% (2016-2025 against 1991-2000). Days above 30°C in August went from 7.9 to 11 a year on average.

Questions about Póvoa de Santa Iria in August

Is August a good time to visit Póvoa de Santa Iria?

Our rules rate August good for beach days (highs of 29°C and about 2 rainy days).

How warm is Póvoa de Santa Iria in August?

Average highs are 29°C and lows 18°C. July averages 28°C and September 27°C.

Does it rain much in Póvoa de Santa Iria in August?

About 2 days have at least 1 mm of rain, with 7 mm in total over the month.

Is Póvoa de Santa Iria 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 Póvoa de Santa Iria 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