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

Sunny

17°C 63°F 8°C 46°F West North Westerly
19km/h 12mph
Sunday

Light Rain

17°C 63°F 14°C 57°F Southerly
14km/h 9mph
Monday

Heavy Rain

18°C 64°F 13°C 55°F South South Easterly
16km/h 10mph
Tuesday

Light Cloud

20°C 68°F 13°C 55°F North Easterly
21km/h 13mph
Wednesday

Light Rain

18°C 64°F 15°C 59°F South Easterly
21km/h 13mph

IN ASSOCIATION WITH

Forecast

Sunrise 06:11 Sunset 20:20

Last updated 08:10

Weather forecast details for Saturday 23 August. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1000 hours1300 hours1600 hours1900 hours2200 hours0100 hours
Sun
0400 hours 
Weather Conditions Sunny Sunny Intervals Sunny Intervals Sunny Clear Sky Partly Cloudy Light Cloud  
Temperature (°C/°F) 14°C 57°F 16°C 61°F 16°C 61°F 15°C 59°F 11°C 52°F 9°C 48°F 9°C 48°F  
Wind Speed (mph/km/h) 19km/h 12mph West North Westerly 19km/h 12mph West North Westerly 24km/h 15mph Westerly 21km/h 13mph West North Westerly 11km/h 7mph North Westerly 11km/h 7mph North Westerly 8km/h 5mph Northerly  
Wind Direction WNW WNW W WNW NW NW N  
Humidity 66% 59% 62% 63% 79% 86% 87%  
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG G VG VG VG G  
Pressure (Millibars) 1017 1017 1017 1018 1019 1019 1019  

Wales

Forecast Summary

  • Today

    A generally fine day with sunny spells and variable amounts of cloud. Most places should stay dry, although the northwesterly breeze could bring in the occasional shower. The odd one perhaps turning heavy and with the risk of thunder.

  • Tonight

    Many places will have a dry, clear and unseasonably cold night. This could lead to a grass frost in prone rural spots. However the odd coastal shower remains possible.

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 19:03, Friday 22 Aug Forecast updated Monday to Friday only

UK

UK Forecast Last updated 07:40, Saturday 23 Aug

Observations

Observed at 08:00, Saturday 23 August

Sunny

12°C 54°F

11km/h 7mph West North Westerly

Humidity: 80%

Visibility: Very Good

Pressure: 1016mb, Rising

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