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

Light Rain

12°C 54°F 11°C 52°F Westerly
29km/h 18mph
Thursday

Light Rain

12°C 54°F 7°C 45°F West South Westerly
39km/h 24mph
Friday

Sunny

9°C 48°F 7°C 45°F West North Westerly
24km/h 15mph
Saturday

Sunny

9°C 48°F 7°C 45°F West North Westerly
27km/h 17mph
Sunday

Light Cloud

11°C 52°F 11°C 52°F West South Westerly
29km/h 18mph

IN ASSOCIATION WITH

Forecast

Sunrise 08:13 Sunset 16:04

Last updated 21:17

Weather forecast details for Wednesday 17 December. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 0000 hours0300 hours      
Weather Conditions Light Rain Light Rain       
Temperature (°C/°F) 12°C 54°F 12°C 54°F       
Wind Speed (mph/km/h) 27km/h 17mph Westerly 31km/h 19mph West South Westerly       
Wind Direction W WSW       
Humidity 93% 93%       
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) M M       
Pressure (Millibars) 1010 1010       

Wales

Forecast Summary

  • This Evening and Tonight

    It will be cloudy with hill fog and mild overnight with increasing westerly winds, with gales around exposed southwestern coasts and over hills. There will be some rain too, this will become persistent, and locally heavy, on western facing hills.

Environmental Summary

UV: 1

UK Range: 1-7

Pollution: 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 19:11, Wednesday 17 Dec Forecast updated Monday to Friday only

UK

UK Forecast Last updated 17:18, Wednesday 17 Dec

Observations

Observed at 20:00, Wednesday 17 December

Thick Cloud

12°C 54°F

29km/h 18mph Westerly

Humidity: 97%

Visibility: Good

Pressure: 1010mb, Rising

Observation station: St. Athan

(Lat: 51.4 | Lon: -3.433)

BBC Weather in association with the Met Office

All times are GMT (Europe/London, GMT+0000) unless otherwise stated

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