5-day weather forecast London Sep 23, 2026
25°Weather forecast London Wednesday Sep 23, 2026: overcast, temperature from 15 °C to 25 °C.
Precipitation probability 15%. Wind up to 5.81 m/s (gusts 9.33 m/s). Air humidity 42–70%, atmospheric pressure 766–770 mm Hg, UV index up to 3.1.
5 days at a glance — tap a day to open it
Sunrise 06:48
Sunset 18:57
Sunset 18:57
Waxing Gibbous95% illuminated
Moonrise 17:55 · Moonset 03:04
Moonrise 17:55 · Moonset 03:04
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 21 °C | 14% | 100% | 58% | 770 mm Hg | SE 141° 1.39 (2.81) m/s | 0 |
| 01:00 | Overcast | 21 °C | 14% | 100% | 59% | 769 mm Hg | SSE 165° 1.39 (2.83) m/s | 0 |
| 02:00 | Overcast | 20 °C | 14% | 100% | 59% | 769 mm Hg | S 178° 1.81 (3.42) m/s | 0 |
| 03:00 | Overcast | 20 °C | 14% | 100% | 60% | 768 mm Hg | SSW 196° 1.89 (3.72) m/s | 0 |
| 04:00 | Overcast | 20 °C | 15% | 100% | 60% | 768 mm Hg | SSW 207° 2 (4.11) m/s | 0 |
| 05:00 | Overcast | 19 °C | 15% | 100% | 61% | 768 mm Hg | SSW 206° 2 (4.61) m/s | 0 |
| 06:00 | Overcast | 19 °C | 15% | 100% | 61% | 768 mm Hg | SSW 209° 2.19 (5.03) m/s | 0 |
| 07:00 | Overcast | 19 °C | 15% | 100% | 61% | 768 mm Hg | SSW 208° 2.19 (4.83) m/s | 0 |
| 08:00 | Overcast | 19 °C | 13% | 91% | 61% | 768 mm Hg | SW 217° 2.5 (5.22) m/s | 0.1 |
| 09:00 | Overcast | 19 °C | 14% | 100% | 59% | 768 mm Hg | SW 221° 2.69 (5.33) m/s | 0.3 |
| 10:00 | Overcast | 20 °C | 13% | 100% | 56% | 768 mm Hg | WSW 238° 3.19 (5.31) m/s | 0.7 |
| 11:00 | Overcast | 21 °C | 12% | 100% | 51% | 767 mm Hg | WSW 246° 3.39 (5.42) m/s | 0.7 |
| 12:00 | Overcast | 22 °C | 11% | 100% | 47% | 767 mm Hg | WSW 250° 3.31 (4.92) m/s | 1.2 |
| 13:00 | Overcast | 23 °C | 10% | 100% | 43% | 767 mm Hg | WSW 256° 3.69 (5.22) m/s | 3 |
| 14:00 |  Sunny | 24 °C | 1% | 5% | 42% | 767 mm Hg | W 262° 3.69 (5.53) m/s | 3.1 |
| 15:00 |  Patchy rain possible | 25 °C | 8% (0.01 mm/hr) | 80% | 44% | 766 mm Hg | WNW 284° 4 (6) m/s | 1.9 |
| 16:00 | Overcast | 24 °C | 11% | 100% | 45% | 766 mm Hg | NW 319° 4.89 (6.11) m/s | 1.2 |
| 17:00 |  Partly cloudy | 23 °C | 4% | 50% | 43% | 767 mm Hg | NW 307° 3.61 (5.94) m/s | 0.2 |
| 18:00 | Sunny | 22 °C | 2% | 0% | 52% | 767 mm Hg | NNW 338° 5.81 (6.75) m/s | 0.2 |
| 19:00 |  Clear | 20 °C | 2% | 0% | 53% | 768 mm Hg | NNW 342° 5.31 (9.11) m/s | 0 |
| 20:00 | Clear | 18 °C | 3% | 0% | 55% | 768 mm Hg | NNW 348° 5 (9.33) m/s | 0 |
| 21:00 | Clear | 17 °C | 3% | 0% | 56% | 769 mm Hg | NNW 346° 4.5 (8.31) m/s | 0 |
| 22:00 | Clear | 16 °C | 3% | 0% | 56% | 769 mm Hg | N 6° 3.81 (7.61) m/s | 0 |
| 23:00 | Clear | 15 °C | 6% | 6% | 70% | 770 mm Hg | NNE 29° 4.11 (6.69) 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.