5-day weather forecast Lisbon Sep 18, 2026
28°Weather forecast Lisbon tomorrow Sep 18, 2026: partly cloudy, temperature from 17 °C to 28 °C.
Precipitation probability 24%. Wind up to 6.19 m/s (gusts 13.72 m/s). Air humidity 32–81%, atmospheric pressure 761–762 mm Hg, UV index up to 6.5.
5 days at a glance — tap a day to open it
Sunrise 07:20
Sunset 19:40
Sunset 19:40
First Quarter53% illuminated
Moonrise 15:16 · Moonset does not set today
Moonrise 15:16 · Moonset does not set today
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 19 °C | 18% | 100% | 69% | 762 mm Hg | N 356° 5.39 (13.72) m/s | 0 |
| 01:00 |  Cloudy | 18 °C | 16% | 84% | 71% | 761 mm Hg | N 355° 5.31 (13.06) m/s | 0 |
| 02:00 |  Partly cloudy | 18 °C | 10% | 34% | 76% | 761 mm Hg | N 355° 5 (11.92) m/s | 0 |
| 03:00 | Cloudy | 18 °C | 18% | 75% | 78% | 761 mm Hg | N 352° 4.61 (11.22) m/s | 0 |
| 04:00 | Cloudy | 17 °C | 20% | 78% | 81% | 761 mm Hg | N 352° 4.69 (11.42) m/s | 0 |
| 05:00 | Overcast | 17 °C | 24% | 100% | 81% | 761 mm Hg | N 351° 4.19 (10.5) m/s | 0 |
| 06:00 | Cloudy | 17 °C | 17% | 66% | 81% | 761 mm Hg | N 355° 3.69 (10.11) m/s | 0 |
| 07:00 | Cloudy | 17 °C | 18% | 70% | 81% | 761 mm Hg | N 357° 3.39 (9.61) m/s | 0 |
| 08:00 | Partly cloudy | 17 °C | 13% | 44% | 80% | 761 mm Hg | N 357° 3 (8.81) m/s | 0 |
| 09:00 |  Overcast | 19 °C | 18% | 100% | 70% | 761 mm Hg | N 359° 3.69 (7.61) m/s | 0.6 |
| 10:00 | Partly cloudy | 21 °C | 7% | 56% | 57% | 762 mm Hg | N 358° 4.19 (6.53) m/s | 1.8 |
| 11:00 |  Sunny | 24 °C | 1% | 5% | 44% | 762 mm Hg | N 2° 3.89 (5.39) m/s | 3.6 |
| 12:00 | Sunny | 26 °C | 2% | 20% | 35% | 761 mm Hg | N 349° 3.11 (3.72) m/s | 5.4 |
| 13:00 | Partly cloudy | 27 °C | 4% | 57% | 32% | 761 mm Hg | NNW 338° 3.61 (3.64) m/s | 6.4 |
| 14:00 | Partly cloudy | 28 °C | 5% | 62% | 32% | 761 mm Hg | NNW 330° 4.5 (8.5) m/s | 6.5 |
| 15:00 |  Cloudy | 27 °C | 5% | 64% | 33% | 761 mm Hg | NW 325° 5 (8) m/s | 5.7 |
| 16:00 | Partly cloudy | 26 °C | 2% | 32% | 37% | 761 mm Hg | NW 324° 5.89 (10.89) m/s | 4.1 |
| 17:00 | Partly cloudy | 25 °C | 3% | 31% | 42% | 761 mm Hg | NNW 327° 6 (11) m/s | 2.2 |
| 18:00 | Partly cloudy | 23 °C | 4% | 41% | 49% | 761 mm Hg | NNW 331° 6.11 (7.72) m/s | 0.9 |
| 19:00 | Sunny | 22 °C | 3% | 6% | 53% | 761 mm Hg | NNW 331° 6.19 (8.81) m/s | 0.2 |
| 20:00 |  Clear | 20 °C | 4% | 5% | 62% | 761 mm Hg | NNW 333° 5 (9.33) m/s | 0 |
| 21:00 | Clear | 20 °C | 4% | 4% | 61% | 761 mm Hg | NNW 345° 4.11 (9) m/s | 0 |
| 22:00 | Clear | 20 °C | 4% | 4% | 60% | 761 mm Hg | NNW 344° 3.31 (7.5) m/s | 0 |
| 23:00 | Clear | 20 °C | 4% | 5% | 61% | 761 mm Hg | NNW 342° 2.61 (6.5) m/s | 0 |
Lisbon 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.