How warm is it in Barcelona in May?

Daytime highs averaged 23.3 °C, night-time lows 13.1 °C. The highest value of the past 10 years was 32.2 °C (28 May 2026), the lowest 5.2 °C (5 May 2019).

How often does it rain in Barcelona in May?

On average there were 8.8 rain days (at least 1 mm) with 53.1 mm of precipitation in total.

🇪🇸 Weather in Barcelona in May

This is what the weather in Barcelona (Catalonia, Spain) was like in May in 2017–2026.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

23.3 °C

21.6 °C – 25.8 °C

Avg. night-time low

13.1 °C

10.6 °C – 14.9 °C

Avg. rain days in period

8.8

28 % of days · ≥ 1.0 mm

Avg. precipitation in period

53.1 mm

18.3 mm – 95.4 mm

Avg. cloud cover

56 %

This data source has no sunshine hours – average cloud cover shown instead.

Avg. sea temperature

–

Sea temperature unavailable for today (daily limit).

Extremes: Highest temperature 32.2 °C (28 May 2026) · Lowest temperature 5.2 °C (5 May 2019) · Avg. daily peak wind 18 km/h

Weather mix of all days

55Sunny
119Partly cloudy
48Cloudy
62Light rain
26Rain

Summary

On average 23.3 °C during the day and 13.1 °C at night.
On average 8.8 rain days (Rain day = at least 1.0 mm of precipitation) with 53.1 mm of precipitation in total.
Prevailing: Partly cloudy.
Warmest year: 2022 (avg. 25.8 °C), coolest: 2019 (avg. 21.6 °C).
Wettest year: 2026 (95.4 mm), driest: 2017 (18.3 mm).
Extremes: 32.2 °C on 28 May 2026 and 5.2 °C on 5 May 2019.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max23.5°Avg. min13.9°
Rain days
11 Rain days
Precipitation
95.4 mm
Avg. cloud cover
49 % cloudy
Sea temperature
–
Max 32.2 °C · Min 6.5 °C
2025
Avg. max23.3°Avg. min13.4°
Rain days
12 Rain days
Precipitation
61.3 mm
Avg. cloud cover
51 % cloudy
Sea temperature
–
Max 30.2 °C · Min 10.7 °C
2024
Avg. max23.2°Avg. min12.8°
Rain days
12 Rain days
Precipitation
43.7 mm
Avg. cloud cover
58 % cloudy
Sea temperature
–
Max 28.7 °C · Min 7.8 °C
2023
Avg. max23.6°Avg. min13.1°
Rain days
10 Rain days
Precipitation
41.8 mm
Avg. cloud cover
63 % cloudy
Sea temperature
–
Max 28.1 °C · Min 8.1 °C
2022
Avg. max25.8°Avg. min14.9°
Rain days
6 Rain days
Precipitation
30.5 mm
Avg. cloud cover
46 % cloudy
Sea temperature
–
Max 31.5 °C · Min 10.0 °C
2021
Avg. max21.9°Avg. min12.1°
Rain days
7 Rain days
Precipitation
39.6 mm
Avg. cloud cover
68 % cloudy
Sea temperature
–
Max 27.7 °C · Min 8.5 °C
2020
Avg. max24.0°Avg. min14.2°
Rain days
6 Rain days
Precipitation
56.9 mm
Avg. cloud cover
51 % cloudy
Sea temperature
–
Max 28.5 °C · Min 10.9 °C
2019
Avg. max21.6°Avg. min10.6°
Rain days
6 Rain days
Precipitation
61.1 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max 25.3 °C · Min 5.2 °C
2018
Avg. max21.7°Avg. min12.5°
Rain days
15 Rain days
Precipitation
82.0 mm
Avg. cloud cover
67 % cloudy
Sea temperature
–
Max 25.7 °C · Min 5.6 °C
2017
Avg. max24.1°Avg. min13.4°
Rain days
3 Rain days
Precipitation
18.3 mm
Avg. cloud cover
51 % cloudy
Sea temperature
–
Max 30.5 °C · Min 6.5 °C

Frequently asked questions

How warm is it in Barcelona in May?: Daytime highs averaged 23.3 °C, night-time lows 13.1 °C. The highest value of the past 10 years was 32.2 °C (28 May 2026), the lowest 5.2 °C (5 May 2019).
How often does it rain in Barcelona in May?: On average there were 8.8 rain days (at least 1 mm) with 53.1 mm of precipitation in total.

Check your exact travel dates

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)