Barcelona Weather in May
Spain · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Barcelona sees average temperatures ranging from a low of 13.9°C (57.0°F) to a high of 21.7°C (71.1°F), with a mean of 17.9°C (64.2°F). Compared to the annual average of 16.7°C (62.1°F), this month is 1.2°C warmer than the yearly norm. Precipitation averages 54.2mm, making it approximately 2.0mm wetter than the monthly average of 52.0mm. The city receives an average of 12.3 hours of sunshine per day during May, with relative humidity averaging 76.2%. Wind speeds reach an average maximum of 18.9 km/h. For travelers, this month offers a temperature experience in Barcelona, with wetter-than-average conditions compared to the rest of the year.
If you're planning trail runs or beach days in Barcelona, timing is everything. I did the Carretera de les Aigües route in May and conditions were flawless — 21°C, 12km/h breeze, UV at 6. July-August pushes UV to 9+, which is brutal between noon and 4pm; shift activities to early morning. Sea temperature hits 26°C in August, perfect for swims. The wind picks up reliably afternoons year-round, helping with heat but making paddleboarding tricky. October is the unsung hero for hiking — cool, golden light, empty paths.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 14.0°C (57.2°F) | 17.9°C (64.2°F) | 22.3°C (72.1°F) |
| Rainfall | 85.7mm | 54.2mm | 41.8mm |
| Sunshine | 10.5 hrs | 12.3 hrs | 12.8 hrs |
| Humidity | 74.8% | 76.2% | 73.7% |
| Wind | 20.5 km/h | 18.9 km/h | 19.3 km/h |
| Rainy Days | 11.2 | 12.2 | 10.6 |
| Snowfall | 0.1 cm | 0.0 cm | 0.0 cm |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Barcelona in May, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Barcelona in May?
The average temperature in Barcelona during May ranges from 13.9°C (57.0°F) to 21.7°C (71.1°F), with a mean of 17.9°C (64.2°F).
How much does it rain in Barcelona in May?
Barcelona receives an average of 54.2mm of precipitation in May, spread across approximately 12.2 rainy days.
What should I pack for Barcelona in May?
Based on May weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is May a good time to visit Barcelona?
May is a good time to visit Barcelona, with comfortable temperatures and manageable rainfall.
Other Months for Barcelona
Cities with Similar May Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.39°, 2.17°. Timezone: Europe/Madrid. Last updated: 2026-07-30.