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

Light Cloud

19°C 66°F 16°C 61°F North North Easterly
5km/h 3mph
Saturday

Light Cloud

21°C 70°F 14°C 57°F North Easterly
11km/h 7mph
Sunday

Sunny

18°C 64°F 11°C 52°F East North Easterly
16km/h 10mph
Monday

Sunny Intervals

16°C 61°F 10°C 50°F South Easterly
8km/h 5mph
Tuesday

Light Cloud

17°C 63°F 11°C 52°F South Westerly
8km/h 5mph

IN ASSOCIATION WITH

Forecast

Sunrise 06:57 Sunset 19:14

Last updated 21:10

Weather forecast details for Sunday 21 September. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 0600 hours0700 hours0800 hours0900 hours1000 hours1100 hours1200 hours1300 hours1400 hours1500 hours1600 hours1700 hours1800 hours1900 hours2200 hours0100 hours
Mon
0400 hours
Weather Conditions Partly Cloudy Partly Cloudy Sunny Intervals Sunny Sunny Sunny Sunny Sunny Sunny Sunny Sunny Sunny Sunny Sunny Clear Sky Partly Cloudy Partly Cloudy
Temperature (°C/°F) 14°C 57°F 14°C 57°F 14°C 57°F 14°C 57°F 14°C 57°F 15°C 59°F 16°C 61°F 17°C 63°F 17°C 63°F 17°C 63°F 18°C 64°F 17°C 63°F 17°C 63°F 16°C 61°F 14°C 57°F 13°C 55°F 12°C 54°F
Wind Speed (mph/km/h) 16km/h 10mph North Easterly 16km/h 10mph North Easterly 18km/h 11mph North Easterly 18km/h 11mph East North Easterly 18km/h 11mph East North Easterly 18km/h 11mph East North Easterly 18km/h 11mph East North Easterly 16km/h 10mph East North Easterly 16km/h 10mph East North Easterly 16km/h 10mph East North Easterly 16km/h 10mph North Easterly 14km/h 9mph North Easterly 14km/h 9mph North Easterly 13km/h 8mph North Easterly 13km/h 8mph East North Easterly 11km/h 7mph Easterly 8km/h 5mph East North Easterly
Wind Direction NE NE NE ENE ENE ENE ENE ENE ENE ENE NE NE NE NE ENE E ENE
Humidity 86% 86% 83% 80% 75% 71% 66% 62% 60% 58% 57% 58% 60% 61% 74% 80% 83%
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG G G VG VG VG VG VG VG VG VG VG VG VG VG G G
Pressure (Millibars) 1023 1024 1024 1025 1025 1026 1026 1026 1026 1026 1026 1026 1026 1026 1027 1028 1027

Wales

Forecast Summary

  • Outlook for Sunday to Tuesday

    Mainly fine throughout with sunny spells and a cooler feel. Chilly nights are expected too. Cloudier on Tuesday with rain at times in the northwest of the country.

Environmental Summary

UV: 4

UK Range: 1-7

Pollen: Moderate

UK Range: Low to Very High

Met Office Warnings Issued For: Cardiff

  1. Yellow warning of rain

    From:
    0530 on Fri 19 September
    To:
    2345 on Fri 19 September
    Updated 19 September at 05:23 Active

    Warning

    Heavy showers and thunderstorms are likely to continue northwards on Friday morning - the risk then continuing through the rest of the day. Many places will miss these but the public should be aware of the potential for isolated disruption due to surface water flooding, lightning strikes and hail.

A list of all UK Warnings can be found on our More UK Weather page.

Weather Warnings Key

  • Red: Take action
  • Amber: Be prepared
  • Yellow: Be aware

Issued by the Met Office

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 17:17, Friday 19 Sep

Observations

Observed at 21:00, Friday 19 September

Thick Cloud

17°C 63°F

10km/h 6mph East North Easterly

Humidity: 89%

Visibility: Good

Pressure: 1013mb, 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