Month guide · São Tiago de Custoias, Portugal
São Tiago de Custoias in August: weather and what to expect
In August, São Tiago de Custoias averages highs of 26°C and lows of 17°C, with about 5 rainy days and 27 mm of rain. Highs are 1°C warmer than in July and 2°C warmer than in September. Crowds in Norte are at their peak.
Is August a good time to visit?
Good for
No verdicts for São Tiago de Custoias in August yet. They only use climate values that are precise enough to judge with.
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through August
Town-level · ERA5-Land 1991-2020Highs stay about the same through the month. A day above 35°C happens in roughly 1 August in 4.
August in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in August 2027
- 15 Aug Assumption Day
Local (municipal) holidays are not included.
Warmer in August
Where is warm in August →| Place | High | Rain days | From São Tiago de Custoias |
|---|---|---|---|
| Alcains, Centro | 31°C | 2 | 174 km |
| Mirandela, Norte | 31°C | 3 | 125 km |
| Aldeia de Joanes, Centro | 31°C | 3 | 151 km |
| Sertã, Centro | 31°C | 3 | 162 km |
| Fundão, Centro | 30°C | 3 | 152 km |
The nearest towns with a warmer August. Distances are in a straight line.
How August is changing
Town-level · ERA5-LandAugust highs are 1.2°C warmer than in 1991-2000, and August rainfall is down about 65% (2016-2025 against 1991-2000). Days above 30°C in August went from 4.3 to 5.7 a year on average.
Questions about São Tiago de Custoias in August
How warm is São Tiago de Custoias in August?
Average highs are 26°C and lows 17°C. July averages 26°C and September 24°C.
Does it rain much in São Tiago de Custoias in August?
About 5 days have at least 1 mm of rain, with 27 mm in total over the month.
Is São Tiago de Custoias busy in August?
In August 2025, nights booked through online platforms in Norte 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 São Tiago de Custoias in August?
About 13 h 53 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