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

Partly Cloudy

20°C 68°F 12°C 54°F North Easterly
14km/h 9mph
Sunday

Sunny

18°C 64°F 9°C 48°F East North Easterly
16km/h 10mph
Monday

Sunny Intervals

18°C 64°F 10°C 50°F South Westerly
11km/h 7mph
Tuesday

Light Cloud

17°C 63°F 11°C 52°F West South Westerly
16km/h 10mph
Wednesday

Sunny Intervals

17°C 63°F 12°C 54°F West North Westerly
21km/h 13mph

IN ASSOCIATION WITH

Forecast

Sunrise 06:56 Sunset 19:17

Last updated 21:13

Weather forecast details for Saturday 20 September. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 2200 hours0100 hours
Sun
0400 hours     
Weather Conditions Light Cloud Light Cloud Light Cloud      
Temperature (°C/°F) 16°C 61°F 15°C 59°F 14°C 57°F      
Wind Speed (mph/km/h) 14km/h 9mph North Easterly 14km/h 9mph North Easterly 14km/h 9mph North Easterly      
Wind Direction NE NE NE      
Humidity 84% 86% 88%      
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) M M M      
Pressure (Millibars) 1020 1022 1022      

Wales

Forecast Summary

  • This Evening and Tonight

    Rather cloudy at first this evening, with perhaps an isolated shower in the southeast. However, clearer conditions will soon spread from the north, leaving a largely dry and cold night, with a touch of ground frost in places.

Environmental Summary

UV: 3

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 19:15, Friday 19 Sep Forecast updated Monday to Friday only

UK

UK Forecast Last updated 17:40, Saturday 20 Sep

Observations

Observed at 21:00, Saturday 20 September

Thick Cloud

17°C 63°F

11km/h 7mph North North Easterly

Humidity: 79%

Visibility: Very Good

Pressure: 1020mb, 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