Weather London Heathrow Airport

Daily forecast
Day Weather Maximum Day Temperature Minimum Night Temperature Wind Direction and Speed

Clear Sky

19°C 66°F 9°C 48°F Northerly
5km/h 3mph


19°C 66°F 10°C 50°F North Westerly
8km/h 5mph

Light Cloud

19°C 66°F 11°C 52°F West South Westerly
11km/h 7mph

Sunny Intervals

19°C 66°F 11°C 52°F West North Westerly
18km/h 11mph

Sunny Intervals

20°C 68°F 13°C 55°F West North Westerly
14km/h 9mph



Sunrise 06:46 Sunset 19:03

Last updated 17:04

Weather forecast details for Sunday 21 September. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1900 hours2200 hours0100 hours
0400 hours    
Weather Conditions Partly Cloudy Clear Sky Clear Sky Clear Sky     
Temperature (°C/°F) 16°C 61°F 14°C 57°F 11°C 52°F 10°C 50°F     
Wind Speed (mph/km/h) 16km/h 10mph North North Easterly 8km/h 5mph North North Easterly 5km/h 3mph Northerly 5km/h 3mph North Westerly     
Wind Direction NNE NNE N NW     
Humidity 63% 73% 84% 90%     
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) G G G M     
Pressure (Millibars) 1025 1027 1027 1027     

London and South East England

Forecast Summary

  • This Evening and Tonight

    Dry overnight with long clear spells and perhaps the odd mist patch in prone locations by dawn. A chilly night, especially in rural spots where a touch of grass frost is possible.

Environmental Summary

UV: 4

UK Range: 1-7

Pollen: Moderate

UK Range: Low to Very High

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BBC London

BBC London Forecast Last updated 19:07, Friday 19 Sep Forecast updated Monday to Friday only


UK Forecast Last updated 17:03, Sunday 21 Sep


Observed at 17:00, Sunday 21 September

Light Cloud

17°C 63°F

16km/h 10mph Northerly

Humidity: 57%

Visibility: Very Good

Pressure: 1025mb, Rising

Observation station: Heathrow

(Lat: 51.483 | Lon: -0.45)

BBC Weather in association with the Met Office

All times are BST (Europe/London, GMT+0100) unless otherwise stated

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