Portugal in may: average Weather, Temperature and Climate, Where to go?
Weather in Portugal in may 2025
Below, check out the weather forecast for may for most popular cities in Portugal. These forecasts are probabilities for may from weather reports for over 10 years. The percentage indicates the probability of having the weather indicated.
Average weather in may in Lisbon
perfect weather UV index: 6
Weather at 6am
15°C
Clear/Sunny
48% of time
28%
10%
9%
Weather at 12pm
22°C
Clear/Sunny
57% of time
20%
14%
7%
Weather at 6pm
20°C
Clear/Sunny
60% of time
18%
14%
5%
Weather at 3am
15°C
53%
26%
10%
7%
Where to go in Portugal in may?
Where to go in Portugal in may: destination map
Where to go in each region in may?
| Alentejo (Evora, Sines, Beja...) | 21°C to 26°C | 1 à 4 days | 18°C | perfect weather* |
| Algarve (Faro (Algarve), Albufeira, Lagos...) | 19°C to 23°C | 1 à 3 days | 19°C | perfect weather* |
| Central Portugal (Lisbon, Aveiro, Coimbra...) | 20°C to 25°C | 3 à 6 days | 17°C to 18°C | good weather* |
| Northern Portugal (Porto, Viana do Castelo, Amarante...) | 19°C to 23°C | 5 à 7 days | 17°C | good weather* |
Where should you go in Portugal in may when it comes to the weather?
Remember:
The climate in Portugal in may ranges from perfect to good depending on the region and city.
The month of May means the return of the beautiful season. Not only is the climate throughout May in Portugal enjoys a pleasant heat due to the increase in temperatures and further takes advantage of the regression in bad weather with beautiful sunny days. The whole Portuguese territory is favored by a warmer and less humid climate but it is the south of the country that you benefits from ideal climatic conditions.
May in Lisbon, Porto and Northern Portuga
The climates in Porto and Lisbon have a certain similarity. The mornings are mild while the heat in the middle of the day begins to be felt. Even if the weather throughout May in Portugal, especially north of Lisbon, is magnificent - it is necessary to be wary of the intermittent rains that may come as a surprise in the middle of day during the first twenty days.
May in Faro (Algarve) and Southern Portugal
It is possible to relax in privacy on the beaches of the south coast. All the conditions are combined to allow for a beautiful holiday away from the crowds. From sun all day to the warm weather, the climate in Portugal throughout May is the ideal accomplice to any entertainment, whether swimming or hikes in the wilderness.
May in the Madeira Archipelago
In May, despite the rise in temperature that occurs on the archipelago of Madeira, the heat has not completely returned. We are barely away from the freshness of the atmosphere. Compared to last month, daily temperatures increased by only one degree Celsius. The difference is barely perceptible. With the regression of humidity however, the weather is rather radiant.
Climate in Portugal in may
Climate in Lisbon in may
In the month of may, maximum temperature is 22°C and minimum temperature is 15°C (for an average temperature of 19°C). The climate pleasant around this city in this month. With barely 66mm over 4 days, rain may be scarce during your journey.
With a good weather, the month of may is a good time to go in this city in Portugal.
| May | |||
| Average temperature | 19°C | ||
| Highest temperature | 22°C | ||
| Lowest temperature | 15°C | ||
| Sea temperature | 17.5°C | ||
| Rainfall | 66mm | ||
| Number of days with rainfall | 4 day(s) (12%) | ||
| Humidity | 81% | ||
| Daily sunshine hours | 14 | ||
| Cloud cover | 24% | ||
| Length of day | 14:17 | ||
| Our opinion at whereandwhen.net | perfect |
Climate in Albufeira in may
In the month of may, the mean temperature in Albufeira is 19°C (maximum temperature is 22°C and minimum temperature is 16°C). The climate enjoyable here in this month. With barely 24mm over 2 days,
it rains very little throughout your journey.
With ideal weather conditions, may is a recommended month to go in that area in Portugal.
| May | |||
| Average temperature | 19°C | ||
| Highest temperature | 22°C | ||
| Lowest temperature | 16°C | ||
| Sea temperature | 18.4°C | ||
| Rainfall | 24mm | ||
| Number of days with rainfall | 2 day(s) (6%) | ||
| Humidity | 77% | ||
| Daily sunshine hours | 14 | ||
| Cloud cover | 18% | ||
| Length of day | 14:10 | ||
| Our opinion at whereandwhen.net | perfect |
Climate in Aveiro in may
In may, maximum temperature is 21°C and minimum temperature is 14°C (for an average temperature of 18°C). The climate is good in this city in this month. With 93mm over 5 days, rain may occur throughout your holidays. But this is moderate and you will not be too bothered by it.
With a good climate, may is a good time to go in this locality.
| May | |||
| Average temperature | 18°C | ||
| Highest temperature | 21°C | ||
| Lowest temperature | 14°C | ||
| Sea temperature | 16.6°C | ||
| Rainfall | 93mm | ||
| Number of days with rainfall | 5 day(s) (17%) | ||
| Humidity | 83% | ||
| Daily sunshine hours | 14 | ||
| Cloud cover | 27% | ||
| Length of day | 14:27 | ||
| Our opinion at whereandwhen.net | good |
Climate in Coimbra in may
In the month of may, maximum temperature is 23°C and minimum temperature is 13°C (for an average temperature of 18°C). The climate is quite pleasant around this city in may. With 86mm over 5 days, rainfall can happen throughout your holidays. But this is pretty reasonably and it will not be continuous.
With a good weather, the month of may is an advisable month to go in Coimbra in Portugal.
| May | |||
| Average temperature | 18°C | ||
| Highest temperature | 23°C | ||
| Lowest temperature | 13°C | ||
| Rainfall | 86mm | ||
| Number of days with rainfall | 5 day(s) (15%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 14 | ||
| Cloud cover | 32% | ||
| Length of day | 14:25 | ||
| Our opinion at whereandwhen.net | good |
Climate in Faro (Algarve) in may
In the month of may, maximum temperature is 22°C and minimum temperature is 17°C (for an average temperature of 19°C). The climate comfortable in that area in the month of may. With barely 19mm over 1 days, rain may be scarce for your journey.
With ideal weather conditions, may is an advisable time to go in that area in Portugal.
| May | |||
| Average temperature | 19°C | ||
| Highest temperature | 22°C | ||
| Lowest temperature | 17°C | ||
| Sea temperature | 18.7°C | ||
| Rainfall | 19mm | ||
| Number of days with rainfall | 1 day(s) (3%) | ||
| Humidity | 75% | ||
| Daily sunshine hours | 14 | ||
| Cloud cover | 18% | ||
| Length of day | 14:09 | ||
| Our opinion at whereandwhen.net | perfect |
All cities in Portugal in may
| Lisbon in may | perfect weather |
| Albufeira in may | perfect weather |
| Aveiro in may | good weather |
| Coimbra in may | good weather |
| Faro (Algarve) in may | perfect weather |
| Fatima in may | good weather |
| Lagos in may | perfect weather |
| Porto in may | good weather |
| Viana do Castelo in may | good weather |
| Amarante in may | good weather |
| Beja in may | perfect weather |
| Cascais in may | good weather |
| Evora in may | good weather |
| Portimao in may | perfect weather |
| Praia de Mira in may | good weather |
| Sines in may | perfect weather |
| Sintra in may | perfect weather |
| Alcobaça in may | good weather |
| Aljezur in may | good weather |
| Altura in may | perfect weather |
| Arganil in may | good weather |
| Caminha in may | good weather |
| Carvoeiro in may | perfect weather |
Weather data for Portugal in may:
Weather data for Portugal in may is derived from an average of the weather forecast since 2009 in Portugal. There is a margin of error and these forecasts are to be considered as general information only. The weather in Portugal can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Portugal.