5-day weather forecast London 21-05-2026
Weather forecast London today 21.05.2026: sunny, temperature from 11 °C to 22 °C.
No precipitation expected. Wind up to 4 m/s (gusts 4.61 m/s). Air humidity 50–96%, atmospheric pressure 769–770 mm Hg, UV index up to 6.
Sunset 20:55
Moonrise 09:29 · Moonset 01:22
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Mist | 13 °C | 0% | 28% | 94% | 769 mm Hg | SW 222° 2.11 (3.72) m/s | 0 |
| 01:00 | Mist | 12 °C | 0% | 37% | 96% | 769 mm Hg | SW 217° 2 (3.58) m/s | 0 |
| 02:00 | Mist | 12 °C | 0% | 42% | 96% | 769 mm Hg | SSW 209° 1.89 (3.42) m/s | 0 |
| 03:00 | Mist | 11 °C | 0% | 31% | 95% | 770 mm Hg | SSW 205° 2.11 (3.75) m/s | 0 |
| 04:00 |  Clear | 11 °C | 0% | 25% | 91% | 770 mm Hg | SSW 211° 2.31 (4.19) m/s | 0 |
| 05:00 | Clear | 11 °C | 0% | 10% | 89% | 770 mm Hg | SW 216° 2.39 (4.39) m/s | 0 |
| 06:00 |  Sunny | 11 °C | 0% | 8% | 88% | 770 mm Hg | SSW 211° 2 (3.47) m/s | 0.1 |
| 07:00 | Sunny | 13 °C | 0% | 17% | 81% | 770 mm Hg | SW 215° 2.61 (3.72) m/s | 0.4 |
| 08:00 |  Partly cloudy | 15 °C | 0% | 32% | 72% | 770 mm Hg | SW 226° 3.39 (4.33) m/s | 1.2 |
| 09:00 | Partly cloudy | 17 °C | 0% | 38% | 64% | 770 mm Hg | SW 228° 3.69 (4.31) m/s | 2.1 |
| 10:00 |  Cloudy | 18 °C | 0% | 69% | 58% | 770 mm Hg | SW 228° 3.89 (4.5) m/s | 3.2 |
| 11:00 | Partly cloudy | 19 °C | 0% | 61% | 54% | 770 mm Hg | SW 223° 3.89 (4.5) m/s | 4.7 |
| 12:00 | Partly cloudy | 21 °C | 0% | 50% | 53% | 770 mm Hg | SW 221° 3.89 (4.5) m/s | 5.5 |
| 13:00 | Partly cloudy | 21 °C | 0% | 49% | 52% | 770 mm Hg | SW 216° 4 (4.61) m/s | 4.3 |
| 14:00 | Partly cloudy | 22 °C | 0% | 33% | 50% | 770 mm Hg | SSW 208° 3.89 (4.5) m/s | 6 |
| 15:00 | Partly cloudy | 22 °C | 0% | 29% | 50% | 770 mm Hg | SSW 201° 4 (4.61) m/s | 6 |
| 16:00 | Partly cloudy | 22 °C | 0% | 41% | 50% | 770 mm Hg | SSW 195° 3.81 (4.36) m/s | 6 |
| 17:00 | Sunny | 22 °C | 0% | 13% | 51% | 770 mm Hg | SSW 193° 3.69 (4.25) m/s | 6 |
| 18:00 | Sunny | 21 °C | 0% | 8% | 53% | 770 mm Hg | SSW 192° 3.69 (4.42) m/s | 6 |
| 19:00 | Sunny | 20 °C | 0% | 12% | 57% | 770 mm Hg | SSW 194° 3.39 (4.5) m/s | 6 |
| 20:00 | Sunny | 19 °C | 0% | 15% | 65% | 770 mm Hg | S 188° 2.39 (3.5) m/s | 5 |
| 21:00 | Clear | 17 °C | 0% | 16% | 74% | 770 mm Hg | S 180° 1.89 (3.39) m/s | 0 |
| 22:00 | Clear | 16 °C | 0% | 15% | 79% | 770 mm Hg | S 171° 1.81 (3.42) m/s | 0 |
| 23:00 | Clear | 15 °C | 0% | 11% | 80% | 770 mm Hg | SSE 158° 1.69 (3.25) m/s | 0 |
Frequently asked questions about the weather in London
Today in London the temperature ranges from 11 °C to 22 °C, wind up to 4 m/s. Check the detailed hourly forecast above for more information.
The precipitation probability in London today is 0%. View the full multi-day forecast above to see the rain chances for each upcoming day.
The wind speed in London today reaches up to 4 m/s with gusts up to 4.61 m/s. Check the detailed wind chart above for hourly wind data.
The air humidity in London today ranges from 50% to 96%. View the humidity chart above for hourly details.
The UV index in London today reaches up to 6. Check the UV index chart above for hourly values throughout the day.
The atmospheric pressure in London today ranges from 769 to 770 mm Hg. View the pressure chart above for hourly readings.
Cloud cover in London today reaches up to 69%. Check the cloud cover chart above for hourly details throughout the day.
London 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.