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Day Weather Maximum Day Temperature Minimum Night Temperature Wind Direction and Speed
Wednesday

Light Cloud

16°C 61°F 10°C 50°F South Westerly
10km/h 6mph
Thursday

Heavy Rain Shower

16°C 61°F 10°C 50°F West South Westerly
16km/h 10mph
Friday

Sunny Intervals

14°C 57°F 9°C 48°F North Westerly
19km/h 12mph
Saturday

Sunny Intervals

15°C 59°F 7°C 45°F North Westerly
19km/h 12mph
Sunday

Light Cloud

15°C 59°F 11°C 52°F South Easterly
13km/h 8mph

IN ASSOCIATION WITH

Forecast

Sunrise 06:08 Sunset 20:45

Last updated 01:11

Weather forecast details for Wednesday 20 August. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 0300 hours0400 hours0500 hours                     
Weather Conditions Light Cloud Light Cloud Light Cloud                      
Temperature (°C/°F) 11°C 52°F 11°C 52°F 11°C 52°F                      
Wind Speed (mph/km/h) 11km/h 7mph South South Westerly 13km/h 8mph South Westerly 14km/h 9mph South Westerly                      
Wind Direction SSW SW SW                      
Humidity 80% 79% 81%                      
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) G G G                      
Pressure (Millibars) 1013 1012 1011                      

Northern Ireland

Forecast Summary

  • Tonight

    After a bright end to the day cloud will thicken up from the north. Some patchy rain will develop especially across Derry and Antrim. Freshening westerly winds.

Environmental Summary

UV: 4

UK Range: 1-7

Pollution: Low

UK Range: Low to Very High

Pollen: Low

UK Range: Low to Very High

Average Conditions

BBC Weather's average conditions for London, United Kingdom. This includes readings of average sunlight, temperature, discomfort from heat and humidity, relative humidity, average Precipitation, and wet days.
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average Minimum Temperature (°C) 2 2 3 4 6 9 11 11 9 7 4 3
Average Minimum Temperature (°F) 35 35 37 39 43 49 52 51 49 44 39 37
Average Maximum Temperature (°C) 6 7 9 12 15 18 18 18 16 13 9 7
Average Maximum Temperature (°F) 43 44 49 53 59 64 65 65 61 55 48 44
Record Minimum Temperature (°C) -13 -12 -12 -4 -3 -1 4 1 -2 -4 -6 -11
Record Minimum Temperature (°F) 9 11 10 24 26 31 39 34 28 24 21 13
Record Maximum Temperature (°C) 13 14 19 21 26 28 29 28 26 21 16 14
Record Maximum Temperature (°F) 56 57 67 69 79 83 85 82 78 70 61 58
Average Precipitation (mm) 80 52 50 48 52 68 94 77 80 83 72 90
Average Precipitation (inches) 3.2 2.1 2.0 1.9 2.1 2.7 3.7 3.0 3.2 3.3 2.8 3.5
Average Sunlight Hours 1 2 3 5 6 6 4 4 4 3 2 1
Wet Days (+0.1 mm) 20 17 16 16 15 16 19 17 18 19 19 21
Relative Humidity AM 92 91 88 83 79 80 84 87 89 91 92 92
Relative Humidity PM 87 80 74 69 66 71 73 75 78 80 85 89
Discomfort From Heat And Humidity <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span> <span class="unit-na" title="Not Available">--</span>

Average Conditions data © Copyright RM, 2011. All rights reserved. Helicon Publishing is a division of RM.

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Forecast Video

BBC Newsline

BBC Newsline Forecast Last updated 18:45, Wednesday 20 Aug Forecast updated Monday to Friday only

UK

UK Forecast Last updated 23:34, Wednesday 20 Aug

Observations

Observed at 01:00, Thursday 21 August

Thick Cloud

11°C 52°F

18km/h 11mph West South Westerly

Humidity: 77%

Visibility: Excellent

Pressure: 1015mb, Falling

Observation station: Aldergrove

(Lat: 54.65 | Lon: -6.217)

BBC Weather in association with the Met Office

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

Information given for most appropriate forecast location. See FAQs for details