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Portugal weather in May

Planning a journey to Portugal this May and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What is the weather like in Portugal in May?

May in Portugal generally has temperatures that range from pleasant to warm, with precipitation levels ranging from low to high.

Based on our climate data spanning from 1990-2020, the average maximum temperature is pleasant in Azoia at 18°C to warm in Moura at 26°C. Nighttime temperatures generally drop to 13°C in Moura and 15°C in Azoia.

In May, precipitation varies across different areas. From low rainfall in Reis Magos with an average of 23 mm to high rainfall in Santa Cruz do Lima with 151 mm. The days are mostly sunny, with an average total of around 290 hours of sunshine in Lisbon. The sunlight during this month doesn't just make the days brighter, it also seems to make everyone a bit more cheerful.

To learn more about the conditions in specific areas of Portugal in May, check out the map below. For more details on the yearly weather, visit our Portugal climate page.

Where to go in Portugal in May

Find the average weather conditions in May for the most popular destinations in Portugal on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Portugal

What is the weather like in May for the 5 most popular destinations in Portugal?

Average weather in Lisbon

In May Lisbon generally has pleasant temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Lisbon
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
19°C 
12°C 
234 hours 
57 mm 
12 days 
22°C 
14°C 
290 hours 
46 mm 
8 days 
June   >> June
>>  
25°C 
16°C 
301 hours 
13 mm 
5 days 
Climate in Lisbon

Average weather in Porto

In May Porto generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 14°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Porto
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
18°C 
12°C 
218 hours 
120 mm 
15 days 
20°C 
14°C 
255 hours 
98 mm 
13 days 
June   >> June
>>  
23°C 
16°C 
278 hours 
39 mm 
9 days 
Climate in Porto

Average weather in Albufeira

In May Albufeira generally has high temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Albufeira
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
20°C 
13°C 
266 hours 
49 mm 
9 days 
22°C 
15°C 
320 hours 
32 mm 
5 days 
June   >> June
>>  
26°C 
17°C 
339 hours 
7.6 mm 
2 days 
Climate in Albufeira

Average weather in Lagos

In May Lagos generally has pleasant temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 15°C and low monthly rainfall. So on average the conditions are perfect that month.

Lagos
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
19°C 
13°C 
266 hours 
46 mm 
9 days 
22°C 
15°C 
321 hours 
29 mm 
5 days 
June   >> June
>>  
24°C 
17°C 
338 hours 
6.9 mm 
3 days 
Climate in Lagos

Average weather in Portimão

In May Portimão generally has high temperatures with maximum daytime temperatures around 23°C, minimum nighttime temperatures around 15°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Portimão
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   April April
<<  
20°C 
12°C 
266 hours 
49 mm 
9 days 
23°C 
15°C 
320 hours 
32 mm 
5 days 
June   >> June
>>  
26°C 
17°C 
339 hours 
7.5 mm 
3 days 
Climate in Portimão

Is your destination not in the list? Have a look at other destinations in Portugal.

Is May the best time to visit Portugal?

We believe that May is one of the best times to visit Portugal with overall perfect weather in Lisbon. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in May, June, July, August, September and October offering mostly perfect weather in Lisbon. On the other hand, the months of January, February and December tend to have tolerable weather conditions.

Interested in more climate information?

We have much more information about the climate in Portugal. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Portugal? Get detailed historical weather averages for many cities in Portugal.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.