Month guide · Sines, Portugal
Sines in April: weather and what to expect
In April, Sines averages highs of 19°C and lows of 12°C, with about 10 rainy days and 57 mm of rain. Highs are 1°C warmer than in March and 2°C cooler than in May. Crowds in the Lisbon area are high.
Is April a good time to visit?
Good for
No verdicts for Sines in April 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 April
Town-level · ERA5-Land 1991-2020Highs climb about 1°C over the month. A day above 25°C happens in roughly 1 April in 4.
April in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in April 2027
- 25 Apr Freedom Day
Local (municipal) holidays are not included.
Warmer in April
Where is warm in April →| Place | High | Rain days | From Sines |
|---|---|---|---|
| Ermidas, Lisbon area | 21°C | 9 | 43 km |
| Ferreira do Alentejo, Alentejo | 21°C | 8 | 67 km |
| Aljustrel, Alentejo | 20°C | 8 | 62 km |
| Odemira, Alentejo | 20°C | 9 | 45 km |
| Alcácer do Sal, Lisbon area | 20°C | 9 | 56 km |
The nearest towns with a warmer April. Distances are in a straight line.
How April is changing
Town-level · ERA5-LandApril highs are 0.7°C warmer than in 1991-2000, and April rainfall is about the same (2016-2025 against 1991-2000). Days above 20°C in April went from 8.0 to 9.1 a year on average.
Questions about Sines in April
How warm is Sines in April?
Average highs are 19°C and lows 12°C. March averages 18°C and May 21°C.
Does it rain much in Sines in April?
About 10 days have at least 1 mm of rain, with 57 mm in total over the month.
Is Sines busy in April?
In April 2025, nights booked through online platforms in the Lisbon area were about 70% of the busiest month, which we count as high. The figure is for the whole region and leaves out hotels.
How long are the days in Sines in April?
About 13 h 09 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