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

Light Cloud

17°C 63°F 12°C 54°F West South Westerly
14km/h 9mph
Wednesday

Sunny

17°C 63°F 10°C 50°F North Westerly
19km/h 12mph
Thursday

Light Cloud

18°C 64°F 15°C 59°F Westerly
24km/h 15mph
Friday

Light Cloud

18°C 64°F 13°C 55°F Westerly
19km/h 12mph
Saturday

Light Cloud

18°C 64°F 13°C 55°F South South Easterly
13km/h 8mph

IN ASSOCIATION WITH

Forecast

Sunrise 07:00 Sunset 19:10

Last updated 11:12

Weather forecast details for Tuesday 23 September. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1300 hours1600 hours1900 hours2200 hours0100 hours
Wed
0400 hours  
Weather Conditions Sunny Intervals Light Cloud Light Cloud Light Cloud Light Rain Light Rain   
Temperature (°C/°F) 16°C 61°F 16°C 61°F 15°C 59°F 14°C 57°F 14°C 57°F 13°C 55°F   
Wind Speed (mph/km/h) 14km/h 9mph West South Westerly 18km/h 11mph Westerly 14km/h 9mph Westerly 16km/h 10mph Westerly 19km/h 12mph West South Westerly 13km/h 8mph West North Westerly   
Wind Direction WSW W W W WSW WNW   
Humidity 69% 65% 74% 78% 89% 91%   
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) G G G G M G   
Pressure (Millibars) 1021 1019 1018 1017 1016 1015   

Wales

Forecast Summary

  • Today

    A chilly start, and fog patches will clear in the morning. Southeastern parts will then have a dry and fine day. Further north and west, it will start fine, but outbreaks of locally heavy rain will affect these parts later.

  • Tonight

    Cloudier conditions and outbreaks of rain in the northwest will spread southeastwards, leading to a milder night than recently. Many parts will become dry by dawn as the rain clears.

Environmental Summary

UV: 4

UK Range: 1-7

Pollen: Moderate

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 19:02, Monday 22 Sep Forecast updated Monday to Friday only

UK

UK Forecast Last updated 07:55, Tuesday 23 Sep

Observations

Observed at 10:00, Tuesday 23 September

Light Cloud

14°C 57°F

5km/h 3mph Easterly

Humidity: 85%

Visibility: Good

Pressure: 1022mb, 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