Editing Cardiff (section)

==Climate==
{{See also|Climate of the United Kingdom#Wales}}
{{climate chart
|Cardiff
|2.3|8.3|121.6
|2.1|8.6|85.2
|4.0|11.1|89.8
|5.2|13.8|68.6
|8.3|17.1|72.3
|11|19.8|66.6
|13.1|21.7|78.4
|12.8|21.5|93.4
|10.5|18.8|94.0
|7.7|14.9|133.5
|4.6|11.3|123.4
|2.6|8.7|125.3
|source=[http://www.metoffice.gov.uk/climate/uk/averages/19812010/sites/cardiff.html Met Office], 1981–2010 averages
|float=right
}}
Cardiff, in the [[Temperate zone|north temperate zone]], has a [[maritime climate]] ([[Köppen climate classification|Köppen]]: Cfb) marked by mild weather that is often cloudy, wet and windy.<ref name="Met Off 1">{{Cite web |url=http://www.metoffice.gov.uk/climate/uk/wl/ |publisher=Met Office |year=2009 |title=Met Office: Regional Climate: Wales |access-date=29 June 2009 |work=Met Office website |url-status=dead |archive-url=https://web.archive.org/web/20120113130422/http://www.metoffice.gov.uk/climate/uk/wl/ |archive-date=13 January 2012 }}</ref> Cardiff is one of the warmest and wettest cities in the UK, with an average annual temperature and rainfall of approximately 11°C and 1200mm respectively. Summers tend to be warm and sunny, with average maxima between {{cvt|19|and|22|°C|°F}}. Winters are fairly wet, but excessive rainfall as well as frost are rare. Spring and autumn feel similar, with mild temperatures averaging around 15°C as daytime maxima. Rain is unpredictable at any time of year, although showers tend to be shorter in summer.<ref name="Airport guide">{{Cite web |url=http://www.cardiff-cwl.airports-guides.com/cwl_climate.html |publisher=TravelSmart Ltd |year=2009 |title=Weather at Cardiff Airport (CWL):Weather and Climate in Cardiff Area, Wales, U |access-date=1 July 2009 |work=Airports guides website |archive-url=https://web.archive.org/web/20090914043201/http://www.cardiff-cwl.airports-guides.com/cwl_climate.html |archive-date=14 September 2009 |url-status=live }}</ref>

The northern part of the county, being higher and inland, tends to be cooler and wetter than the city centre.<ref name="OS 171">{{Cite map |publisher=Ordnance Survey |title=Landranger Map sheet 171 |isbn=0-319-22771-5 |cartography=Ordnance Survey |edition=2002 C1 |section=ST083 990 }}</ref>

Cardiff's maximum and minimum monthly temperatures average {{cvt|21.5|°C|°F}} (July) and {{cvt|2.1|°C|°F}} (February).<br />For Wales, the temperatures average {{cvt|19.1|°C|°F}} (July) and {{cvt|1.1|°C|°F}} (February).<ref name="Met Off 2">{{Cite web |url=http://www.metoffice.gov.uk/climate/uk/averages/19712000/sites/cardiff.html |publisher=Met Office |year=2009 |title=Met Office: averages 1971–2000 |access-date=29 June 2009 |work=Met Office website |archive-url=https://web.archive.org/web/20090805000908/http://www.metoffice.gov.uk/climate/uk/averages/19712000/sites/cardiff.html |archive-date=5 August 2009 |url-status=live }}</ref><ref name="Met Off 3">{{Cite web |url=http://www.metoffice.gov.uk/climate/uk/averages/19712000/areal/wales.html |publisher=Met Office |year=2009 |title=Met Office: averages 1971–2000 |access-date=29 June 2009 |work=Met Office website |url-status=dead |archive-url=https://web.archive.org/web/20070929102646/http://www.metoffice.gov.uk/climate/uk/averages/19712000/areal/wales.html |archive-date=29 September 2007 }}</ref>

Cardiff has 1,518 hours of sunshine in an average year (Wales 1,388.7 hours). Cardiff is sunniest in July, with an average 203.4 hours during the month (Wales 183.3 hours), and least sunny in December with 44.6 hours (Wales 38.5 hours).<ref name="Met Off 2"/><ref name="Met Off 3"/>

Cardiff experiences less rainfall than average for Wales. It falls on 146 days in an average year, with total annual rainfall of {{cvt|1151.9|mm|in}}. Monthly rainfall patterns show that from October to January, average monthly rainfall in Cardiff exceeds {{cvt|100|mm|in}} each month, the wettest month being December with {{cvt|125.3|mm|in}} and the driest from April to June, with average monthly rainfall fairly consistent between {{cvt|65|and|75|mm|in}}.<ref name="Met Off 2"/><ref name="Met Off 3"/>

{{Weather box
| location = Cardiff ([[Bute Park]])<br>[[Location identifier#WMO station identifiers|WMO ID]]: 99610; coordinates {{coord|51.48818|N|3.18859|W|type:landmark_region:GB|name=Met Office Bute Park|format=dms}}; elevation: {{convert|9|m|ft|0|abbr=on}}; 1991–2020 normals, extremes 1913–present{{efn|Extreme temperature records were measured at Cardiff (1913–1976), Cardiff Weather Centre (1982–2006) and Bute Park (1977–present).}}
| metric first = Yes
| single line = Yes
| Jan record high C = 15.0
| Feb record high C = 18.3
| Mar record high C = 21.6
| Apr record high C = 26.9
| May record high C = 28.9
| Jun record high C = 32.1
| Jul record high C = 33.6
| Aug record high C = 34.5
| Sep record high C = 29.7
| Oct record high C = 27.1
| Nov record high C = 18.7
| Dec record high C = 16.7
| Jan high C = 8.6
| Feb high C = 9.2
| Mar high C = 11.3
| Apr high C = 14.4
| May high C = 17.4
| Jun high C = 20.1
| Jul high C = 21.8
| Aug high C = 21.4
| Sep high C = 19.1
| Oct high C = 15.3
| Nov high C = 11.6
| Dec high C = 9.1
| year high C = 15.0
| Jan mean C = 5.6
| Feb mean C = 5.9
| Mar mean C = 7.6
| Apr mean C = 10.1
| May mean C = 13.0
| Jun mean C = 15.7
| Jul mean C = 17.5
| Aug mean C = 17.2
| Sep mean C = 14.9
| Oct mean C = 11.7
| Nov mean C = 8.3
| Dec mean C = 6.0
| year mean C = 
| Jan low C = 2.5
| Feb low C = 2.5
| Mar low C = 3.9
| Apr low C = 5.7
| May low C = 8.5
| Jun low C = 11.1
| Jul low C = 13.1
| Aug low C = 12.9
| Sep low C = 10.7
| Oct low C = 8.0
| Nov low C = 4.9
| Dec low C = 2.8
| year low C = 7.3
| Jan record low C = -16.7
| Feb record low C = -11.1
| Mar record low C = -8.9
| Apr record low C = -4.8
| May record low C = -2.0
| Jun record low C = 1.0
| Jul record low C = 4.5
| Aug record low C = 3.6
| Sep record low C = 0.5
| Oct record low C = -3.4
| Nov record low C = -8.7
| Dec record low C = -10.1
| precipitation colour = green
| Jan precipitation mm = 127.0
| Feb precipitation mm = 93.0
| Mar precipitation mm = 85.3
| Apr precipitation mm = 72.1
| May precipitation mm = 78.5
| Jun precipitation mm = 73.5
| Jul precipitation mm = 83.6
| Aug precipitation mm = 104.8
| Sep precipitation mm = 86.3
| Oct precipitation mm = 129.1
| Nov precipitation mm = 130.7
| Dec precipitation mm = 139.6
| year precipitation mm = 
| unit precipitation days = 1.0 mm
| Jan precipitation days = 15.6
| Feb precipitation days = 12.0
| Mar precipitation days = 12.3
| Apr precipitation days = 10.7
| May precipitation days = 11.2
| Jun precipitation days = 10.4
| Jul precipitation days = 11.2
| Aug precipitation days = 12.4
| Sep precipitation days = 11.8
| Oct precipitation days = 15.0
| Nov precipitation days = 15.6
| Dec precipitation days = 15.2
| year precipitation days = 
| Jan sun = 53.5
| Feb sun = 76.2
| Mar sun = 116.6
| Apr sun = 177.0
| May sun = 198.4
| Jun sun = 195.2
| Jul sun = 199.6
| Aug sun = 185.3
| Sep sun = 151.9
| Oct sun = 103.9
| Nov sun = 65.0
| Dec sun = 50.4
| year sun = 1572.9
| source 1 = [[Met Office]]<ref name="Met office">{{cite web |url=https://www.metoffice.gov.uk/research/climate/maps-and-data/uk-climate-averages/gcjszmp44 |title=Cardiff 1991–2020 Averages |publisher=Met Office |access-date=11 January 2022 }}</ref><ref>{{cite web |url=https://www.metoffice.gov.uk/climate/uk/interesting/aug1990 |title=Hot Spell August 1990 |publisher=Met Office |access-date=14 December 2018 }}</ref><ref>{{cite web |url=https://www.metoffice.gov.uk/climate/uk/interesting/july2006 |title=Record Breaking Heat and Sunshine – 2006 |publisher=Met Office |access-date=14 December 2018 }}</ref> [[Ordnance Survey]]<ref>[[Ordnance Survey]] 1:25,000 map, [https://www.bing.com/maps/?mkt=en-gb&v=2&cp=51.486871%7E-3.183023&lvl=16.1&sp=Point.51.48818_-3.18859_Met+Office+Bute+Park&sty=s&style=s spot height adjacent to the specified coordinates]</ref>
| source 2 = [[Royal Netherlands Meteorological Institute|KNMI]]<ref name="KNMI">{{cite web |url=https://eca.knmi.nl//download/millennium/millennium.php |title=Cardiff – STAID 2126 and 17483 |access-date=23 April 2020 |publisher=KNMI |archive-date=9 July 2018 |archive-url=https://web.archive.org/web/20180709010608/https://eca.knmi.nl//download/millennium/millennium.php |url-status=dead }}</ref> Starlings Roost Weather<ref>{{cite web |url=http://starlingsroost.ddns.net/weather/ukobs/temp_month_record_tmax_map.php |title=Monthly Extreme Maximum Temperature |access-date=5 February 2023 |publisher=Starlings Roost Weather |archive-date=1 February 2023 |archive-url=https://web.archive.org/web/20230201173843/http://starlingsroost.ddns.net/weather/ukobs/temp_month_record_tmax_map.php |url-status=dead }}</ref><ref>{{cite web |url=http://starlingsroost.ddns.net/weather/ukobs/temp_month_record_tmin_map.php |title=Monthly Extreme Minimum Temperature |access-date=5 February 2023 |publisher=Starlings Roost Weather |archive-date=1 February 2023 |archive-url=https://web.archive.org/web/20230201173844/http://starlingsroost.ddns.net/weather/ukobs/temp_month_record_tmin_map.php |url-status=dead }}</ref>
| date = February 2012}}
{{Notelist}}