|OS grid reference|
|Sovereign state||United Kingdom|
|Post town||COLWYN BAY|
|Postcode district||LL28, LL29|
Colwyn Bay (Welsh: Bae Colwyn) is a town, community and seaside resort in Conwy County Borough on the north coast of Wales overlooking the Irish Sea. Eight neighbouring communities are incorporated within its postal district. Established as its own separate parish in 1844 with just a small grouping of homes and farms where the community of Old Colwyn stands today, Colwyn Bay has expanded to become the second-largest community and business centre in the north of Wales as well as the 15th largest in the whole of Wales with the urban statistical area--including Old Colwyn, Rhos-on-Sea, Mochdre and Llysfaen--having a population of 31,353 at the 2011 census.
The name 'Colwyn' may be named after 'Collwyn ap Tangno' who was Lord of Eifionnydd, Ardudwy and part of the Ll?n peninsula, or the River Colwyn in Old Colwyn.
The town is situated about halfway along the north coast of Wales, between the sea and the Pwllycrochan Woods on the towering hillside. Groes yn Eirias (Welsh:Cross in Torch) was once a separate hamlet centred on the Glyn farmhouse (c1640) but the area is now occupied by the Glyn estate and Eirias Park.
As with the rest of the British Isles, Colwyn Bay experiences a maritime climate with cool summers and mild winters, and often high winds. The local climate is well known for the prevalence of Foehn winds - where winds from the South pass over the nearby mountains and warm and dry on their descent, leading to far higher temperatures than otherwise might be expected; the area holds the Welsh high temperature record for February at 18.7°C on 23 February 2012.
|Climate data for Colwyn Bay 36m asl, 1981-2010|
|Average high °C (°F)||8.5
|Average low °C (°F)||2.8
|Average precipitation mm (inches)||74.7
|Mean monthly sunshine hours||56.2||81.8||115.0||162.8||209.0||185.6||189.6||174.7||135.2||108.2||59.9||44.1||1,522|
|Source: Met Office|
Prior to local government reorganisation on 1 April 1974 Colwyn Bay was a municipal borough with a population of around 25,000, but in 1974 this designation disappeared leaving five separate parishes, known as communities in Wales, of which the one bearing the name Colwyn Bay encompassed just the central part of the overall town and in the 2001 Census contained just 9,742 people, with the others as follows: Mochdre (1,862), Rhos-on-Sea (7,110), Glan Conwy (2,290), Old Colwyn (7,626) and Llysfaen (2,652). This gives a total figure for the six communities of 31,382, generally referred to as the population of Colwyn Bay, making it the 16th largest urban area in Wales and the second largest settlement in North Wales. Bringing 2011 figures into account that figure is now 33,549. The area is sometimes referred to by the name Bay of Colwyn.
According to the 2011 Census, 17.9% of the population aged three and above noted that they could speak Welsh. The Census also noted that 29.9% of the population who were born in Wales could speak Welsh.
Colwyn Bay hosted the National Eisteddfod in 1910 and 1947.
The town has parks and gardens and a number of natural amenities such as Eirias Park. Colwyn Bay has received a gold award 8 times in the Wales in Bloom competition. In 2009 and 2010 the town has been invited to enter Britain in Bloom and has been awarded silver gilt in both years. The Welsh Mountain Zoo is nearby.
The Victoria Pier was closed to the public in 2009, when a dispute between Conwy County Borough Council and the pier's owner led to him being declared bankrupt. The fate of the pier was initially uncertain; the council hoped it would be "substantially" demolished for "health and safety and visual reasons to be able to re-open that section of the beach". In January 2017, the lower end of the pier partially collapsed into the sea and Conwy Council subsequently announced plans to dismantle and store the pier, with a view of restoring it at a later date. The pier was finally demolished in May 2018.
Llety'r Dryw is a Grade II listed house in Abergele Road, built for the uncle of Anthony Eden and now used as the training centre for North Wales Police. Llys Euryn is a medieval manor house on Bryn Euryn, now in ruins.
The town is served by Colwyn Bay railway station located in the town centre on the North Wales Coast Line with trains run by Transport for Wales and Virgin Trains. The A55 road passes through the town, running parallel to the North Wales Coast Line.
Colwyn Bay has three secondary schools - one private and two state. Eirias High School is in Eirias Park and Ysgol Bryn Elian is in Old Colwyn. Ysgol Bryn Elian mainly serves Old Colwyn and Eirias High School mainly serves Colwyn Bay, Rhos on Sea and Penrhyn Bay. Rydal Penrhos School is a Methodist public school, which is on multiple sites in the town. The town's primary schools are Ysgol Nant y Groes, Ysgol Pen-y-Bryn, Ysgol T Gwynn Jones, Ysgol Hen Golwyn, and Saint Joseph's R.C. Primary and the Welsh-language Ysgol Bod Alaw.
Anglican churches in and around the town include the parish church St Paul's Church, St David's Welsh Church, St John the Baptist's Church, St Joseph's Roman Catholic Church and Christ Church, Bryn-y-Maen to the south of the town.
The local football team is Colwyn Bay F.C., the local cricket team is Colwyn Bay Cricket Club who play at Penrhyn Avenue and the rugby union team is Colwyn Bay RFC. As of 2012, the RGC 1404 rugby team play at Eirias Stadium in Colwyn Bay as part of a development venture by the WRU.
Colwyn Bay Golf Club (now defunct) was founded in 1893. The club and course closed in 1959 and the land was used for a housing development.
The Black Cat Cycling Club, founded in 2014, is based in Colwyn Bay  with members made up of cyclists from the town and the surrounding area.