5-day weather forecast Barcelona Sep 21, 2026

30°22° · Sunny

Weather forecast Barcelona Monday Sep 21, 2026: sunny, temperature from 22 °C to 30 °C.

Precipitation probability 9%. Wind up to 3.69 m/s (gusts 8.31 m/s). Air humidity 27–50%, atmospheric pressure 765–770 mm Hg, UV index up to 7.

Weather Alerts

ModerateSep 17, 10:57 AM — Sep 18, 02:59 PMTranslate with Google

Moderate rain warning. Litoral de Barcelona

Moderate rain warning

One-hour accumulated precipitation: 20 mm.

Be aware, keep up to date with the latest weather forecast. Moderate damages to people and properties may occur, especially to those vulnerable or in exposed areas.

5 days at a glance — tap a day to open it

Sunrise 07:37
Sunset 19:50

Waxing Gibbous82% illuminated
Moonrise 17:37 · Moonset 02:14

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Table

← Sun, Sep 20

Mon, Sep 21, 2026

Forecast from 22 °C to 30 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	24	24	24	24	24	23	23	23	22	24	25	26	29	30	29	30	30	28	29	28	26	26	26	25
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	0	0	2	4	5	5	2	5	76	62	5	6	99	100	7	88	100	56	73	5	46	54	63	72
Rain chance (%)	1	1	1	2	2	1	2	2	7	5	1	1	9	9	1	8	9	4	6	1	4	5	6	7

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	1	1.5	1.89	1.69	1.81	1.81	1.81	1.61	1.61	1.31	1.5	1	1.81	2.31	3.11	3.31	3.69	3.69	2.89	2.39	2.39	2.19	1.89	1.69
Wind gust (m/s)	1	1.61	2.22	1.92	1.92	1.83	2	1.72	5.61	1.61	1.94	1.42	2.61	2.75	3.44	8.31	6.69	3.92	3.33	3	2.92	2.89	2.81	2.72
Wind direction (°)	NW 316°	NW 316°	NNW 333°	WNW 297°	NW 306°	NW 323°	NW 314°	NW 315°	NW 323°	NW 309°	WNW 283°	W 280°	WSW 250°	SSW 212°	S 187°	S 182°	S 181°	SSE 167°	S 185°	S 189°	S 182°	SSW 206°	SW 230°	WSW 254°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	45	45	45	49	50	44	49	48	43	42	36	33	28	27	29	30	34	38	38	40	45	46	47	48

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	770	770	769	769	768	768	768	768	768	768	768	768	767	767	767	766	766	766	765	765	766	766	766	766

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0	0	0.4	1.3	2.8	4.5	5.7	6.1	7	7	7	6	7	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

← Sun, Sep 20

Mon, Sep 21, 2026

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.

Learn more about our methodology →