Barcelona
Spain
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Barcelona, Spain

The artistic Park Gull fronted by Gaudi, the architect, in Barcelona, Spain, on a beautiful summer day
The artistic Park Gull fronted by Gaudi, the architect, in Barcelona, Spain, on a beautiful summer day
May is the first month of summer characterized by a 62% humidity average and rising temperatures. The sea gets warmer at 18°C (64.4°F), and appreciative of the sunshine hours that remain steady at eight across most days, people start to frequent the beaches for a swim and following a bask in the warm sun.
On average, the temperatures range between 14°C (57.2°F) at the lowest and 22°C (71.6°F) at the highest point. Most nights are mildly cool, with temperatures dropping to as low as 9°C (48.2°F) occasionally making May a pleasant month in Barcelona.
Expect rain to occasionally interrupt as chances of rainfall increases to five days with precipitation of 53.3mm (2.1") on the monthly average.

What is the temperature in May in Barcelona?

In Barcelona, Spain, in May, the average high-temperature is 22.5°C (72.5°F), and the average low-temperature is 16.1°C (61°F).

How much does it rain in Barcelona in May?

In Barcelona, in May, during 7.5 rainfall days, 47.4mm (1.9") of precipitation is typically accumulated.

What is the sea temperature in May in Barcelona?

In Barcelona, the average seawater temperature in May is 18.1°C (64.6°F). For most, swimming in 18.1°C (64.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Barcelona have in May?

The average length of the day in May in Barcelona is 14.5h.

How many hours of sunshine does Barcelona have in May?

In May, the average sunshine is 8.3h.

What is the UV index intensity in May in Barcelona?

In Barcelona, Spain, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in May - Barcelona, Spain
  • Average high temperature in May: 22.5°C

The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in May: 16.1°C

The month with the highest average low temperature is August (23.1°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).

Average rainfall in May - Barcelona, Spain
  • Average rainfall in May: 47.4mm

The wettest month (with the highest rainfall) is October (96.5mm).
The driest month (with the lowest rainfall) is July (25.1mm).

Average rainfall days in May - Barcelona, Spain
  • Average rainfall days in May: 7.5 days

Months with the highest number of rainy days are September and October (8 days).
The month with the lowest number of rainy days is July (3.1 days).

Average sea temperature in May - Barcelona, Spain
  • Average sea temperature in May: 18.1°C

The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).

Average daylight in May / Average sunshine in May - Barcelona, Spain
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.3h

The month with most sunshine is June (Average sunshine: 9.6h).
The month with least sunshine is December (Average sunshine: 4.4h).

Average UV index in May - Barcelona, Spain
  • Average UV index in May: 7

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).