5-day weather forecast Barcelona Sep 20, 2026
27°Weather forecast Barcelona Sunday Sep 20, 2026: sunny, temperature from 21 °C to 27 °C.
Precipitation probability 15%. Wind up to 4 m/s (gusts 8.61 m/s). Air humidity 32–66%, atmospheric pressure 768–770 mm Hg, UV index up to 6.1.
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 07:36
Sunset 19:52
Sunset 19:52
Waxing Gibbous73% illuminated
Moonrise 17:06 · Moonset 01:12
Moonrise 17:06 · Moonset 01:12
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 23 °C | 4% | 5% | 60% | 768 mm Hg | WNW 282° 1.31 (2.69) m/s | 0 |
| 01:00 |  Partly cloudy | 23 °C | 8% | 59% | 60% | 768 mm Hg | WNW 302° 2.11 (3.31) m/s | 0 |
| 02:00 |  Overcast | 23 °C | 15% | 100% | 61% | 768 mm Hg | NNW 328° 2 (3.22) m/s | 0 |
| 03:00 |  Cloudy | 23 °C | 11% | 76% | 63% | 768 mm Hg | N 354° 1.61 (2.22) m/s | 0 |
| 04:00 | Clear | 22 °C | 5% | 6% | 66% | 768 mm Hg | NNE 30° 1.69 (2) m/s | 0 |
| 05:00 | Clear | 22 °C | 5% | 0% | 66% | 768 mm Hg | NNE 22° 1.39 (1.61) m/s | 0 |
| 06:00 | Clear | 21 °C | 4% | 0% | 65% | 768 mm Hg | N 355° 1.19 (1.42) m/s | 0 |
| 07:00 | Clear | 21 °C | 4% | 5% | 63% | 769 mm Hg | NNW 344° 1.31 (1.44) m/s | 0 |
| 08:00 | Sunny | 21 °C | 4% | 4% | 60% | 769 mm Hg | NNW 334° 1.5 (1.61) m/s | 0 |
| 09:00 | Sunny | 22 °C | 3% | 4% | 55% | 770 mm Hg | NW 319° 0.81 (1) m/s | 0.4 |
| 10:00 | Sunny | 23 °C | 2% | 0% | 50% | 770 mm Hg | W 275° 0.31 (0.64) m/s | 1.3 |
| 11:00 | Sunny | 25 °C | 1% | 0% | 45% | 770 mm Hg | SSE 155° 0.61 (5.61) m/s | 2.9 |
| 12:00 | Sunny | 26 °C | 1% | 0% | 39% | 770 mm Hg | SE 138° 1.39 (1.5) m/s | 4.5 |
| 13:00 | Sunny | 27 °C | 1% | 0% | 34% | 770 mm Hg | SE 134° 1.81 (2.19) m/s | 5.8 |
| 14:00 | Sunny | 27 °C | 1% | 5% | 32% | 770 mm Hg | SE 139° 2.39 (2.61) m/s | 6.1 |
| 15:00 |  Partly cloudy | 27 °C | 3% | 46% | 33% | 769 mm Hg | SE 143° 3.61 (8.61) m/s | 5.5 |
| 16:00 | Sunny | 26 °C | 1% | 5% | 38% | 769 mm Hg | SE 144° 4 (7) m/s | 4 |
| 17:00 | Sunny | 26 °C | 1% | 5% | 41% | 769 mm Hg | SE 146° 3 (8) m/s | 2.3 |
| 18:00 |  Cloudy | 26 °C | 7% | 76% | 43% | 769 mm Hg | SSE 154° 2.39 (7.39) m/s | 1 |
| 19:00 |  Overcast | 25 °C | 9% | 88% | 45% | 769 mm Hg | SSE 161° 2.11 (5.11) m/s | 0.2 |
| 20:00 | Overcast | 25 °C | 11% | 100% | 47% | 769 mm Hg | SSE 168° 1.5 (1.61) m/s | 0 |
| 21:00 | Cloudy | 25 °C | 6% | 63% | 48% | 770 mm Hg | SSW 211° 1.19 (1.61) m/s | 0 |
| 22:00 | Clear | 25 °C | 2% | 11% | 47% | 770 mm Hg | WSW 246° 1.61 (2.31) m/s | 0 |
| 23:00 | Clear | 25 °C | 1% | 0% | 45% | 770 mm Hg | W 279° 1.19 (1.42) 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.