Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Portugal in May
Weather score57Good
Good for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 8.9h per day, so bright days are a strong part of the month. Rainfall averages 49mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
21°C
Rain
49mm
Sun
8.9h
Sea
11°C
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 49mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Portugal with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May21°C average high
May is close to Portugal's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
May49mm average rain
May sits near Portugal's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJune to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May8.9 hours average sun
May is brighter than Portugal's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May11°C average sea
May is close to Portugal's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJune to October
Sea temperatures are usually near 12°C in this stretch, so swimming comfort is at its strongest.
Weather score
May57 weather score
May sits close to Portugal's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
Hotels near Portugal
Marriott
Sheraton Cascais ResortCascais, Portugal
The Ritz-Carlton, Penha Longa ResortSintra, Portugal
Moxy Alfragide LisboaLisboa, Portugal
Altis Belém Hotel & Spa, a Member of Design Hotels™Lisbon, Portugal
Lisbon Marriott HotelLisbon, Portugal
Memmo Principe Real, Lisbon, a Member of Design Hotels™Lisbon, Portugal