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

Clear Sky

17°C 63°F 10°C 50°F West North Westerly
8km/h 5mph
Thursday

Light Rain Shower

16°C 61°F 12°C 54°F Westerly
21km/h 13mph
Friday

Sunny

17°C 63°F 9°C 48°F West North Westerly
19km/h 12mph
Saturday

Sunny

17°C 63°F 8°C 46°F West North Westerly
18km/h 11mph
Sunday

Light Cloud

17°C 63°F 14°C 57°F Southerly
18km/h 11mph

IN ASSOCIATION WITH

Forecast

Sunrise 06:06 Sunset 20:26

Last updated 18:07

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 1900 hours2000 hours2100 hours2200 hours2300 hours0000 hours
Thu
0100 hours0200 hours0300 hours0400 hours0500 hours             
Weather Conditions Sunny Intervals Sunny Clear Sky Clear Sky Clear Sky Clear Sky Clear Sky Clear Sky Clear Sky Partly Cloudy Partly Cloudy              
Temperature (°C/°F) 16°C 61°F 15°C 59°F 14°C 57°F 13°C 55°F 12°C 54°F 12°C 54°F 11°C 52°F 11°C 52°F 10°C 50°F 10°C 50°F 10°C 50°F              
Wind Speed (mph/km/h) 18km/h 11mph West North Westerly 14km/h 9mph North Westerly 11km/h 7mph West North Westerly 10km/h 6mph West North Westerly 10km/h 6mph West North Westerly 8km/h 5mph West North Westerly 8km/h 5mph West North Westerly 6km/h 4mph West North Westerly 5km/h 3mph West North Westerly 5km/h 3mph Westerly 5km/h 3mph West North Westerly              
Wind Direction WNW NW WNW WNW WNW WNW WNW WNW WNW W WNW              
Humidity 50% 52% 59% 62% 66% 69% 72% 75% 78% 79% 81%              
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG VG VG VG VG VG VG VG G G              
Pressure (Millibars) 1018 1018 1018 1018 1018 1018 1018 1018 1017 1017 1016              

Wales

Forecast Summary

  • This Evening and Tonight

    Any showers should fade away this evening to leave a generally dry night with largely clear skies. With winds also easing it will be another unseasonably chilly night for many. However isolated showers are possible across southern parts later.

Environmental Summary

UV: 5

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 5 8 11 12 13 11 8 5 3
Average Minimum Temperature (°F) 35 35 38 41 46 51 54 55 51 46 41 37
Average Maximum Temperature (°C) 7 7 10 13 16 19 20 21 18 14 10 8
Average Maximum Temperature (°F) 45 45 50 56 61 68 69 69 64 58 51 46
Record Minimum Temperature (°C) -17 -9 -8 -3 -1 4 7 6 2 -3 -3 -7
Record Minimum Temperature (°F) 2 15 18 27 31 39 44 43 35 26 26 19
Record Maximum Temperature (°C) 15 16 20 24 29 31 31 33 28 25 18 15
Record Maximum Temperature (°F) 59 61 68 75 84 87 88 91 83 77 65 59
Average Precipitation (mm) 108 72 63 65 76 63 89 97 99 109 116 108
Average Precipitation (inches) 4.3 2.8 2.5 2.6 3.0 2.5 3.5 3.8 3.9 4.3 4.7 4.3
Average Sunlight Hours 2 3 4 5 6 7 6 6 5 3 2 2
Wet Days (+0.1 mm) 18 14 13 13 13 13 14 15 16 16 17 18
Relative Humidity AM 89 87 82 74 74 73 76 78 81 85 88 89
Relative Humidity PM <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>
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 Wales Today

BBC Wales Today Forecast Last updated 15:05, Wednesday 20 Aug Forecast updated Monday to Friday only

UK

UK Forecast Last updated 13:13, Wednesday 20 Aug

Observations

Observed at 18:00, Wednesday 20 August

Light Cloud

16°C 61°F

21km/h 13mph Westerly

Humidity: 54%

Visibility: Excellent

Pressure: 1018mb, Falling

Observation station: St. Athan

(Lat: 51.4 | Lon: -3.433)

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