5-day weather forecast Barcelona 03-09-2026

Weather forecast Barcelona tomorrow 03.09.2026: sunny, temperature from 26 °C to 27 °C.

Precipitation probability 20%. Wind up to 6.39 m/s (gusts 8.11 m/s). Air humidity 69–76%, atmospheric pressure 765–767 mm Hg, UV index up to 7.4.

Sunrise 07:19
Sunset 20:21
Last Quarter50% illuminated
Moonrise 23:12 · Moonset 14:05
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Table

Forecast from 26 °C to 27 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)262626262626262626262626262626262727262626262626
Precipitation (mm/hr)000000000000000000000000

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)842222597866574100516415555555555
Rain chance (%)16877720188715207796665677888

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)0.50.6922.392.893.112.611.811.691.8922.192.693.394.114.695.195.816.395.314.393.893.53.5
Wind gust (m/s)0.610.6957.395.898.116.616.815.691.922.032.222.813.694.615.336.317.227.926.925.724.924.394.19
Wind direction (°)N 354°WSW 247°WSW 254°WSW 252°WSW 245°WSW 250°W 262°W 266°WSW 247°WSW 248°WSW 246°SW 232°SW 225°SW 224°SW 228°SW 222°SW 215°SW 216°SW 218°SW 216°SW 214°SW 221°SW 223°SW 228°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)737273747575757575757473717070697069707375767676

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)765765765765765765765765766766766767767767766766765765765765765765766766

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index000000000.10.71.93.65.56.97.46.75.13.11.50.50000

Air quality & pollen

Air quality
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
PM2.5 (µg/m³)14.415.816.819.219.519.316.318.223.218.615.810.810.3111110.39.38.37.87.88910.110.6
PM10 (µg/m³)24.825.925.72526.126.62930.131.532.32416.517.519.420.221.322.621.62019.819.519.519.720.5
Ozone (O₃) (µg/m³)34222627262422219214971879288981041011009287746659
NO₂ (µg/m³)69.273.576.574.86661.55956.360.867.945.72619.919.916.8139.29.211.515.520.930.133.733.9
SO₂ (µg/m³)6.77.47.17.46.96.56.16.46.46.34.63.83.33.52.82.41.41.21.31.41.52.12.72.9
CO (µg/m³)182197190187186192197204222227197192167166164153148147149150149149149151

Barcelona on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.