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Lisbon in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Lisbon in May will be like? Take a look at our weather guide for Lisbon, based on historical data.
Check flight prices to Lisbon on Avionero:
May

Weather in Lisbon in May 2025

Good Weather
Mild
☀️
Sunny
✈️
$698 - $1,023
Are you considering a trip to Lisbon in May? Well, the weather is usually on your side with an average maximum temperature of +70°F and about 15 sunny days. Just keep in mind that there may be some rain, with an average of 4 rainy days and 39 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+70°F
Avg. max. temperature
+46°F
Min.
+93°F
Max.
39 mm
Total precipitation
68%
Avg. humidity
3 m/s
Avg. wind
15 ☀️
Sunny Days
12 ⛅️
Cloudy
4 🌦
Rainy
Our opinion: Lisbon has good weather in May.

Average temperature in Lisbon in May

Here are the expected maximum, average and minimum temperatures in Lisbon for May based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in May is +77°F with a maximum of +90°F and a minimum of +55°F.

The average maximum temperature goes up 16% by the end of the month, compared with the beginning of the month, from +66°F to +72°F.

Is Lisbon warm or cold in May?

Lisbon is typically mild in May.

Maximum temperatures go up compared to the previous month from +66°F to +70°F. The minimum temperature also goes up from +54°F to +57°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how May is compared to other months in Lisbon:

Travel to Lisbon

Click to see more details
✈️
64
Flights per week
$698
Min. Price
$1,023
Max. Price

Climate in Lisbon in May

Lisbon weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+66°F+70°F+75°F
Min. temperature
+43°F+46°F+54°F
Max. temperature
+86°F+93°F+106°F
Rainfall
67 mm39 mm10 mm
Wind
3 m/s3 m/s3 m/s
Humidity
70%68%67%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
121517
Cloudy days
121212
Rainy days
641
Snowy days
000

May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +66°F to +70°F during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 67 mm to 39 mm. It feels drier, as humidity decreases from 70% to 68%. The average wind speed doesn’t change much during May, staying around 3 m/s. The good news is there are likely to be more sunny days in May, from 12 to 15.

But maybe it is worth considering traveling in June as the weather gets better.

Wind

Wind speed in Lisbon in May based on historical data.
Last Year
Historical Data

The average wind speed is 5 m/s getting up to 13 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Lisbon is gradually increasing during May, going from 6 m/s to 13 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Lisbon based on historical data.
Last Year
Historical Data
Typically, there is a 19% chance of rain on an average day in May, with total rainfall of approximately 37 mm. The maximum amount of rainfall per day is around 14 mm, which is considered light rain. On average, there are about 6 rainy days during May, so prepare to bring an umbrella.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Lisbon wettest month is December, where a typical day has a 23% chance of precipitation and 121 mm of rainfall per day. July, on the other hand, is the driest month with a mere 0% chance of precipitation and 2 mm of rainfall per day.

How was the weather last May in Lisbon?

This is the weather in Lisbon in May 2023:
1 May
☀️
+66°F
2 May
☁️
+66°F
3 May
☀️
+70°F
4 May
☀️
+76°F
5 May
☀️
+77°F
6 May
☀️
+78°F
7 May
☀️
+80°F
8 May
☀️
+85°F
9 May
☀️
+83°F
10 May
☀️
+79°F
11 May
☀️
+84°F
12 May
☀️
+85°F
13 May
☀️
+84°F
14 May
☀️
+75°F
15 May
☁️
+69°F
16 May
☁️
+68°F
17 May
☀️
+75°F
18 May
☀️
+76°F
19 May
☀️
+80°F
20 May
☀️
+87°F
21 May
☁️
+74°F
22 May
☁️
+69°F
23 May
☁️
+71°F
24 May
☀️
+67°F
25 May
☀️
+77°F
26 May
☀️
+87°F
27 May
☀️
+90°F
28 May
☀️
+74°F
29 May
☁️
+69°F
30 May
☁️
+70°F
31 May
☁️
+72°F
In May 2023 Lisbon had 22 sunny days, 9 cloudy days, and 0 rainy days. The average maximum temperature was +77°F, with an absolute maximum of +90°F and a minimum of +66°F. The average humidity was 61%, with a maximum of 91% and a minimum of 25%. The average wind speed was 5 m/s, with a maximum of 21 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change Over the Years

This is how Lisbon climate has changed over the last 43 years.

The climate in Lisbon in May has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+64°F) and the highest in 2022 (+80°F). The driest year was 2003 with only 0 mm of rainfall, and the wettest year was 1991 with 0 mm.

FAQ

Frequently asked questions about the weather in Lisbon in May:

Is May a good time to visit Lisbon?

May is a really good time to go to Lisbon. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Lisbon.

Can you sunbathe in Lisbon in May?

May has mild temperatures in Lisbon. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Lisbon rainy in May?

Lisbon is usually dry in May. Plan your packing around outdoor activities and exploring.

Is it sunny in Lisbon in May?

The amount of sunny days in Lisbon during May varies; prepare for a mix of clouds and sun.

How much does it cost to fly to Lisbon in May?

The normal prices to fly to Lisbon is $698 - $1,023. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.

Other cities in Portugal

Check out the weather for other cities in Portugal.

Monthly weather in Lisbon

Source of the data

For this page, we’ve looked at the typical weather in Lisbon, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.