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 14 sunny days. Just keep in mind that there may be some rain, with an average of 7 rainy days and 40 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+70°F
Avg. max. temperature
+46°F
Min.
+93°F
Max.
40 mm
Total precipitation
69%
Avg. humidity
4 m/s
Avg. wind
14 ☀️
Sunny Days
8 ⛅️
Cloudy
7 🌦
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 temperature in May is +75°F on average, with a range between a maximum of +84°F during the day and a minimum of +55°F at night.
The average maximum temperature goes down 31% by the end of the month, compared with the beginning of the month, from +82°F to +73°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:
Water temperature in Lisbon in May
Water in Lisbon in May is Fresh. It varies from +60°F to +67°F, with an average of +63°F.This is almost similar to the air temperature, which averages +70°F.
In May, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Lisbon are reached in October, when the average sea temperature rises to +68°F. The coldest water temperatures are in March, with an average of +59°F.
Can you swim in Lisbon in May?
Water temperature (+63°F) in Lisbon in May might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Travel to Lisbon
Click to see more details
✈️
67
Flights per week
$698
Min. Price
$1,023
Max. Price
Airlines with direct connections:
Brussels Airlines
Air France
Lufthansa
TAP Portugal
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Climate in Lisbon in May
Lisbon weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+66°F
+70°F
+75°F
Min. temperature
+43°F
+46°F
+54°F
Max. temperature
+90°F
+93°F
+106°F
Rainfall
67 mm
40 mm
12 mm
Wind
4 m/s
4 m/s
4 m/s
Avg. water temperature
+61°F
+63°F
+65°F
Humidity
71%
69%
68%
Air pressure
1015 HPa
1015 HPa
1016 HPa
Sunny days
11
14
16
Cloudy days
7
8
9
Rainy days
10
7
4
Snowy days
0
0
0
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 40 mm.It feels drier, as humidity decreases from 71% to 69%.The average wind speed doesn’t change much during May, staying around 4 m/s.The good news is there are likely to be more sunny days in May, from 11 to 14.
But maybe it is worth considering traveling in June as the weather gets better.
Wind speed in Lisbon in May based on historical data.
Last Year
Historical Data
The average wind speed is 6 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 decreasing during May, going from 6 m/s to 4 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
A chance of rain on a typical day in May stands at 26%, leading to total precipitation of around 48 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain.On average, there are about 8 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 42% chance of precipitation and 122 mm of rainfall per day. July, on the other hand, is the driest month with a mere 6% 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
☀️
+83°F
2 May
☀️
+84°F
3 May
☀️
+75°F
4 May
☀️
+72°F
5 May
☀️
+73°F
6 May
☀️
+74°F
7 May
☀️
+76°F
8 May
☀️
+77°F
9 May
☁️
+75°F
10 May
☀️
+71°F
11 May
☀️
+71°F
12 May
☀️
+69°F
13 May
☀️
+75°F
14 May
☀️
+75°F
15 May
☀️
+72°F
16 May
☀️
+81°F
17 May
☀️
+83°F
18 May
☀️
+77°F
19 May
☀️
+76°F
20 May
☀️
+74°F
21 May
☀️
+73°F
22 May
☀️
+74°F
23 May
☀️
+78°F
24 May
☀️
+78°F
25 May
☀️
+80°F
26 May
☁️
+67°F
27 May
☁️
+75°F
28 May
☀️
+73°F
29 May
☀️
+72°F
30 May
☀️
+74°F
31 May
☀️
+74°F
In May 2023 Lisbon had 28 sunny days, 3 cloudy days, and 0 rainy days. The average maximum temperature was +75°F, with an absolute maximum of +84°F and a minimum of +68°F. The average humidity was 73%, with a maximum of 100% and a minimum of 33%. The average wind speed was 6 m/s, with a maximum of 22 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 1979 (+65°F) and the highest in 2017 (+72°F). The driest year was 1992 with only 298 mm of rainfall, and the wettest year was 2022 with 2338 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!
Can you swim in Lisbon in May?
In general, you can swim in Lisbon in May, if you want to, at an average water temperature of +63°F. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
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.
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, 2023.
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.
