Editing Nefyn (section)

===20th century and after===

[[Nefyn & District Golf Club]] was formed in 1907. The course added a further 9 holes in 1912 and a third set of 9 holes in 1933. The current course is made up of a front ten with a choice of two back eights. It is set high on the sea cliffs of the narrow peninsula overlooking [[Porthdinllaen]] bay.

Since 1929, Nefyn has played host to a [[Children's Special Service Mission|Beach Mission]], which runs for two weeks at the beginning of August each year.<ref>{{Cite web|url=http://www.scriptureunion.org.uk/HelpingyougetintotheBible/SummerMissions/Nefyn/1583.id|title=Scripture Union – Nefyn|website=www.scriptureunion.org.uk|language=en|access-date=2018-06-24}}</ref>

Nefyn football club, [[Nefyn United F.C.]], was formed in 1932 and has enjoyed some success over the years, winning numerous league titles. At present, the senior team competes in the [[Welsh Alliance League]]: it was promoted from the Gwynedd League in 2005–06.

During the [[Second World War]], the [[Royal Air Force]] built a [[Chain Home]] [[radar]] station to the south-west of Nefyn.

In 1977, the Llŷn Maritime Museum was opened in the Church of St Mary<ref>{{Cite web|url=https://britishlistedbuildings.co.uk/300004371-church-of-st-mary-nefyn|title=Church of St Mary, Nefyn, Gwynedd|publisher=Good Stuff|website=britishlistedbuildings.co.uk}}</ref> by a group of volunteers. It closed in 2000 on grounds of health and safety, but was redeveloped from 2007 and reopened in 2014.<ref>{{Cite web|url=https://www.llyn-maritime-museum.co.uk/eng/hanes-yr-amgueddfa.html|title=Amgueddfa Morwrol Llyn Maritime Museum|website=www.llyn-maritime-museum.co.uk}}</ref>

The area has a history of earth tremors and landslides. A tremor in the area on 12 December 1940 was reported by the ''[[Cambrian News]]'' as having caused two fatalities including John Thomas of Nefyn who died of a [[heart attack]].<ref>{{Cite journal|last=Musson|first=R M W|date=February 2003|title=Fatalities in British earthquakes|journal=Astronomy and Geophysics|language=en|volume=44|issue=1|pages=1.14–1.16|doi=10.1046/j.1468-4004.2003.44114.x|issn=1366-8781|doi-access=free}}</ref> On 19 July 1984, an [[earthquake]] measuring 5.4 on the [[Richter magnitude scale|Richter scale]] had an [[epicentre]] near Nefyn. This was one of the strongest tremors recorded in Britain in recent times but caused little structural damage. A fatal landslide occurred at Y Lôn Gam on 2 January 2001.<ref>{{Cite web|title=Nefyn Bay, North Wales|url=https://www.bgs.ac.uk/case-studies/nefyn-bay-north-wales-landslide-case-study/|access-date=2021-10-30|website=British Geological Survey|language=en-GB}}</ref><ref>{{Cite news|date=2001-01-04|title=Couple 'struggled' to escape landslide|language=en-GB|work=BBC News|url=http://news.bbc.co.uk/2/hi/uk_news/wales/1099606.stm|access-date=2021-10-30}}</ref> On 19 April 2021, a [[landslide]] resulted in a cliff collapse, which affected gardens in Rhodfa'r Môr, but there were no casualties.<ref>{{Cite news|url=https://www.bbc.com/news/uk-wales-56799238|title=Nefyn beach landslide: People warned to keep away|work=BBC News|date=19 April 2021}}</ref><ref>{{Cite web|url=https://www.dailypost.co.uk/news/north-wales-news/drone-video-shows-massive-scale-20417969|title=Drone video shows scale of beach landslide – and how close it came to houses|first=Harri|last=Evans|date=19 April 2021|website=North Wales Live}}</ref> A further landslide on 29 October 2021 blocked vehicular access to the beach at Y Lôn Gam and the adjacent cliff path was closed.<ref>{{Cite news|url=https://www.bbc.co.uk/news/uk-wales-59097578|title=Wales weather: Landslide wrecks Nefyn road after heavy rain |publisher=BBC News|date=29 October 2021}}</ref>

Nefyn is [[town twinning|twinned]] with [[Puerto Madryn]], a town in [[Chubut Province]] in [[Argentina]] (see [[Welsh settlement in Argentina]]).