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

Light Cloud

9°C 48°F 6°C 43°F Westerly
16km/h 10mph
Sunday

Light Rain

11°C 52°F 10°C 50°F West South Westerly
29km/h 18mph
Monday

Light Rain

11°C 52°F 9°C 48°F West South Westerly
34km/h 21mph
Tuesday

Light Rain

11°C 52°F 6°C 43°F West South Westerly
29km/h 18mph
Wednesday

Light Cloud

9°C 48°F 4°C 39°F West North Westerly
23km/h 14mph

IN ASSOCIATION WITH

Forecast

Sunrise 08:15 Sunset 16:06

Last updated 20:11

Weather forecast details for Saturday 20 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 Cloud Light Rain       
Temperature (°C/°F) 8°C 46°F 8°C 46°F       
Wind Speed (mph/km/h) 14km/h 9mph Westerly 24km/h 15mph West South Westerly       
Wind Direction W WSW       
Humidity 88% 89%       
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG       
Pressure (Millibars) 1031 1030       

Wales

Forecast Summary

  • This Evening and Tonight

    Cloud will increase from the west through this evening with some patchy rain and drizzle developing overnight, mainly across the hills. The southwesterly winds will also strengthen through the period.

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 19:06, Friday 19 Dec Forecast updated Monday to Friday only

UK

UK Forecast Last updated 17:08, Saturday 20 Dec

Observations

Observed at 20:00, Saturday 20 December

Light Cloud

8°C 46°F

14km/h 9mph West North Westerly

Humidity: 78%

Visibility: Very Good

Pressure: 1032mb, 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