Month guide · Lagoa, Algarve

Lagoa (Algarve) in May: weather and what to expect

In May, Lagoa (Algarve) averages highs of 23°C and lows of 14°C, with about 7 rainy days and 36 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.

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

Average high Town-level23°CLow 14°C
Sea temperature Modelled17°COpen sea nearby, average for the month
Rainy days Town-level736 mm in total
UV index Modelled8Very high at noon on a clear day
Crowds RegionalMediumThe Algarve as a whole

Is May a good time to visit?

Good for

  • Walking and cycling
    Highs of 23°C with about 7 rainy days

Not ideal for

Nothing stands out as a weaker fit.

Daily highs through May

Town-level · ERA5-Land 1991-2020
Usual range (8 in 10 years)Typical high

Highs climb about 4°C over the month. A day above 30°C happens in roughly 1 May in 2; nights below 10°C in about 1 in 3.

May in detail

Town-level · ERA5-Land
MeasureAprilMayJune
Average high20°C23°C27°C
Average low12°C14°C17°C
Rainy days (at least 1 mm)872
Total rainfall52 mm36 mm9 mm
Daylight (mid-month)13 h 07 min14 h 08 min14 h 42 min

Crowds, holidays and daylight

Visitor level RegionalMediumNights booked through online platforms in the Algarve in May 2025: about 40% of the busiest month.

Public holidays in May 2027

  • 1 May Labor Day
  • 27 May Corpus Christi

Local (municipal) holidays are not included.

Daylight mid-month Exact14 h 08 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Lagoa
Parchal, Algarve23°C76 km
Ferragudo, Algarve23°C76 km
Estômbar, Algarve23°C73 km
Porches, Algarve23°C65 km
Carvoeiro, Algarve23°C74 km

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

How May is changing

Town-level · ERA5-Land

May highs are 2.1°C warmer than in 1991-2000, and May rainfall is down about 45% (2016-2025 against 1991-2000). Days above 25°C in May went from 6.5 to 13 a year on average.

Questions about Lagoa (Algarve) in May

Is May a good time to visit Lagoa (Algarve)?

Our rules rate May good for walking and cycling (highs of 23°C with about 7 rainy days).

How warm is Lagoa (Algarve) in May?

Average highs are 23°C and lows 14°C. April averages 20°C and June 27°C.

Does it rain much in Lagoa (Algarve) in May?

About 7 days have at least 1 mm of rain, with 36 mm in total over the month.

Is Lagoa (Algarve) 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 Lagoa (Algarve) in May?

About 14 h 08 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