Barcelona Weather in May
In May, Barcelona averages a high of 21°C (70°F) and a low of 14°C (56°F), from 56 years of daily records (1971–2026).
21°C
Average high
70°F
14°C
Average low
56°F
34°C
Record high
92°F · May 28, 2026
4°C
Record low
40°F · May 3, 1991
What May Is Like in Barcelona
- Barcelona's hottest May day on record is a recent one: 34°C (92°F) on May 28, 2026.
- May in Barcelona has become 3.7°C (6.6°F) warmer on average: the 2012–2026 average against 1970–1989.
- 8 of the 10 warmest Mays on record in Barcelona have come since 2012.
- May 2026 was the 5th warmest May in 56 years of records, 2.8°C (5.1°F) above the long-run average.
At least 1 mm of rain falls on 17% of May days, and the month averages 54 mm in total.
Warmest: 2022 (24.6°C)Latest: 2026 (23.6°C)10-year averageLong-run average (21.3°C)
Look Up a Day in May
See the weather in Barcelona on any May date, year by year.
Source: NOAA GHCN-Daily, Barcelona/Aeropuerto (1971–2026); Barcelona-El Raval (2008–2026). Averages cover 1971–2026. How we compute this