5-day weather forecast Barcelona Sep 18, 2026
24°Weather forecast Barcelona tomorrow Sep 18, 2026: light rain shower, temperature from 20 °C to 24 °C.
Precipitation probability 67%. Wind up to 4 m/s (gusts 6.89 m/s). Air humidity 61–80%, atmospheric pressure 762–764 mm Hg, UV index up to 4.7.
Weather Alerts
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 07:34
Sunset 19:56
Sunset 19:56
First Quarter53% illuminated
Moonrise 15:40 · Moonset does not set today
Moonrise 15:40 · Moonset does not set today
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 22 °C | 6% | 15% | 70% | 762 mm Hg | SW 217° 1.69 (2.42) m/s | 0 |
| 01:00 |  Patchy rain possible | 22 °C | 17% (0.01 mm/hr) | 88% | 71% | 763 mm Hg | SW 218° 1.69 (2.53) m/s | 0 |
| 02:00 | Patchy rain possible | 21 °C | 60% (1.11 mm/hr) | 89% | 73% | 762 mm Hg | SW 227° 1.69 (2.33) m/s | 0 |
| 03:00 |  Light rain shower | 21 °C | 55% (0.82 mm/hr) | 79% | 78% | 762 mm Hg | WSW 243° 0.89 (1.19) m/s | 0 |
| 04:00 | Light rain shower | 21 °C | 63% (0.88 mm/hr) | 99% | 79% | 762 mm Hg | SSW 208° 0.69 (0.89) m/s | 0 |
| 05:00 | Light rain shower | 21 °C | 41% (0.26 mm/hr) | 100% | 79% | 762 mm Hg | WNW 290° 0.39 (0.83) m/s | 0 |
| 06:00 | Light rain shower | 20 °C | 67% (1.14 mm/hr) | 100% | 80% | 762 mm Hg | NW 305° 0.5 (0.92) m/s | 0 |
| 07:00 | Light rain shower | 20 °C | 47% (0.38 mm/hr) | 100% | 79% | 762 mm Hg | WNW 300° 0.31 (0.72) m/s | 0 |
| 08:00 | Light rain shower | 20 °C | 60% (0.76 mm/hr) | 100% | 79% | 762 mm Hg | ENE 68° 0.5 (1.11) m/s | 0 |
| 09:00 | Light rain shower | 21 °C | 37% (0.23 mm/hr) | 100% | 75% | 763 mm Hg | E 79° 1 (1.31) m/s | 0.4 |
| 10:00 | Light rain shower | 21 °C | 38% (0.3 mm/hr) | 100% | 72% | 763 mm Hg | E 81° 1.11 (6.11) m/s | 1.2 |
| 11:00 |  Patchy rain possible | 22 °C | 21% (0.05 mm/hr) | 100% | 68% | 763 mm Hg | ESE 115° 1 (1.61) m/s | 2.2 |
| 12:00 | Light rain shower | 23 °C | 32% (0.27 mm/hr) | 100% | 65% | 764 mm Hg | SSE 148° 1.89 (2.33) m/s | 3.6 |
| 13:00 | Light rain shower | 23 °C | 38% (0.37 mm/hr) | 100% | 66% | 764 mm Hg | SSE 157° 2.89 (6.89) m/s | 4.4 |
| 14:00 | Light rain shower | 23 °C | 33% (0.3 mm/hr) | 100% | 65% | 764 mm Hg | SSE 163° 2.81 (3.14) m/s | 4.7 |
| 15:00 | Light rain shower | 24 °C | 25% (0.16 mm/hr) | 100% | 61% | 763 mm Hg | S 174° 2.61 (3.25) m/s | 4.2 |
| 16:00 | Light rain shower | 24 °C | 57% (1.51 mm/hr) | 88% | 61% | 763 mm Hg | S 181° 4 (4.22) m/s | 3.1 |
| 17:00 | Light rain shower | 24 °C | 42% (0.54 mm/hr) | 97% | 62% | 763 mm Hg | SSW 194° 4 (4.42) m/s | 2 |
| 18:00 | Patchy rain possible | 23 °C | 12% (0.01 mm/hr) | 78% | 61% | 763 mm Hg | SSW 195° 3.31 (3.81) m/s | 1 |
| 19:00 | Light rain shower | 23 °C | 36% (0.33 mm/hr) | 60% | 61% | 763 mm Hg | S 189° 2.81 (3) m/s | 0.3 |
| 20:00 |  Cloudy | 23 °C | 11% | 78% | 63% | 763 mm Hg | S 180° 1.81 (2.03) m/s | 0 |
| 21:00 |  Overcast | 23 °C | 13% | 89% | 63% | 764 mm Hg | S 184° 1.5 (1.81) m/s | 0 |
| 22:00 | Clear | 23 °C | 4% | 0% | 64% | 764 mm Hg | SSW 210° 1.69 (2.31) m/s | 0 |
| 23:00 | Clear | 22 °C | 5% | 2% | 66% | 764 mm Hg | WSW 242° 1.5 (2.39) m/s | 0 |
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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.