Month guide · Olhão, Portugal
Olhão in May: weather and what to expect
In May, Olhão averages highs of 22°C and lows of 15°C, with about 6 rainy days and 32 mm of rain. Highs are 3°C warmer than in April and 4°C cooler than in June. Our rules rate it good for walking and cycling. Crowds in the Algarve are medium.
Is May a good time to visit?
Good for
- Walking and cyclingHighs of 22°C with about 6 rainy days
Not ideal for
Nothing stands out as a weaker fit.
Daily highs through May
Town-level · ERA5-Land 1991-2020Highs climb about 4°C over the month.
May in detail
Town-level · ERA5-LandCrowds, holidays and daylight
Public holidays in May 2027
- 1 May Labor Day
- 27 May Corpus Christi
Local (municipal) holidays are not included.
Warmer in May
Where is warm in May →| Place | High | Rain days | From Olhão |
|---|---|---|---|
| Cabanas de Tavira, Algarve | 24°C | 6 | 24 km |
| Vila Nova De Cacela, Algarve | 24°C | 6 | 32 km |
| Manta Rota, Algarve | 24°C | 6 | 33 km |
| Conceição, Algarve | 24°C | 6 | 25 km |
| São Brás de Alportel, Algarve | 23°C | 7 | 14 km |
The nearest towns with a warmer May. Distances are in a straight line.
How May is changing
Town-level · ERA5-LandMay highs are 1.8°C warmer than in 1991-2000, and May rainfall is down about 35% (2016-2025 against 1991-2000). Days above 25°C in May went from 4.0 to 9.9 a year on average.
Questions about Olhão in May
Is May a good time to visit Olhão?
Our rules rate May good for walking and cycling (highs of 22°C with about 6 rainy days).
How warm is Olhão in May?
Average highs are 22°C and lows 15°C. April averages 20°C and June 26°C.
Does it rain much in Olhão in May?
About 6 days have at least 1 mm of rain, with 32 mm in total over the month.
Is Olhão busy in May?
In May 2025, nights booked through online platforms in the Algarve were about 40% of the busiest month, which we count as medium. The figure is for the whole region and leaves out hotels.
How long are the days in Olhão in May?
About 14 h 07 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