Month guide · Santo António da Charneca, Portugal

Santo António da Charneca in May: weather and what to expect

In May, Santo António da Charneca averages highs of 22°C and lows of 14°C, with about 7 rainy days and 42 mm of rain. Highs are 3°C warmer than in April and 3°C cooler than in June. Our rules rate it good for walking and cycling. Crowds in the Lisbon area are high.

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

Average high Town-level22°CLow 14°C
Sea temperature Modelled17°COpen sea nearby, average for the month
Rainy days Town-level742 mm in total
UV index Modelled8Very high at noon on a clear day
Crowds RegionalHighThe Lisbon area as a whole

Is May a good time to visit?

Good for

  • Walking and cycling
    Highs of 22°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 3°C over the month. A day above 30°C happens in roughly 1 May in 3; nights below 10°C in about 1 in 3.

May in detail

Town-level · ERA5-Land
MeasureAprilMayJune
Average high19°C22°C25°C
Average low12°C14°C16°C
Rainy days (at least 1 mm)973
Total rainfall52 mm42 mm12 mm
Daylight (mid-month)13 h 10 min14 h 15 min14 h 51 min

Crowds, holidays and daylight

Visitor level RegionalHighNights booked through online platforms in the Lisbon area in May 2025: about 75% 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 15 minSunrise to sunset, calculated from the town's coordinates.
PlaceHighRain daysFrom Santo António da Charneca
Vendas Novas, Alentejo24°C850 km
Benavente, Oeste e Vale do Tejo24°C844 km
Salvaterra de Magos, Oeste e Vale do Tejo24°C849 km
Alcácer do Sal, Alentejo23°C753 km
Samora Correia, Oeste e Vale do Tejo23°C737 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 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 4.1 to 7.9 a year on average.

Questions about Santo António da Charneca in May

Is May a good time to visit Santo António da Charneca?

Our rules rate May good for walking and cycling (highs of 22°C with about 7 rainy days).

How warm is Santo António da Charneca in May?

Average highs are 22°C and lows 14°C. April averages 19°C and June 25°C.

Does it rain much in Santo António da Charneca in May?

About 7 days have at least 1 mm of rain, with 42 mm in total over the month.

Is Santo António da Charneca busy in May?

In May 2025, nights booked through online platforms in the Lisbon area were about 75% 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 Santo António da Charneca in May?

About 14 h 15 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