#1Undy and Magor
5,742 peopleJuly high·10 days of 25°C+ a year·#718 of 2,537 in England, Scotland, Wales and Northern Ireland
Undy and Magor, #1 on this list · Photo: Jaggery · CC BY-SA 2.0Gwent rankings · Climate
Towns with the warmest summers in Gwent
Undy and Magor has the warmest summers of Gwent’s 38 towns of 2,500+: July afternoons average a high of 22.3°C (Met Office, 1991–2020). The typical town here averages 20.5°C.
The average July high (the warmest month’s afternoons). Met Office HadUK-Grid 1991–2020 averages on its 2 km grid, the cells inside each town averaged (contains Met Office data © Crown copyright). A described list: no letters. The rank across England, Scotland, Wales and Northern Ireland sits beside each figure.
#122.3°C
#T2Caerleon
7,329 peopleJuly high·14 days of 25°C+ a year·#814 of 2,537 in England, Scotland, Wales and Northern Ireland
#T2Langstone
2,912 peopleJuly high·13 days of 25°C+ a year·#814 of 2,537 in England, Scotland, Wales and Northern Ireland
All 38 towns, ranked
July high, highest first. Temperatures are ranked on two decimals and shown to one, so two towns showing the same figure can rank apart; towns smaller than a 2 km cell share its figures. Towns with the same figure share a rank (T = tied). Each rank across England, Scotland, Wales and Northern Ireland links to the national list.
38 towns.
#TownJuly highDays 25°C+UK rank
Quick answers
Questions people ask
Which town in Gwent has the warmest summers?
Undy and Magor: July afternoons average a high of 22.3°C, with 10 days of 25°C or more in a typical year. Caerleon and Langstone follow.
How are these towns ranked?
By the average July high, highest first, from the Met Office’s 1991–2020 averages on its 2 km grid: the cells inside the town, or the one nearest its centre for a town smaller than a cell. The figure is the one on each town’s Climate page.
Why isn’t my town on this list?
The list covers Gwent’s towns of 2,500+ with the figure. Smaller places show it on their own pages; every town in Gwent is on the county page.
Go deeper
All Gwent rankings →More Gwent lists
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
Best places to live38 towns · #1 RogerstoneBest small towns25 towns · #1 RogerstoneMost affordable towns38 towns · #1 New TredegarSafest towns38 towns · #1 Pen-pedair-heolHealthiest towns38 towns · #1 Undy and MagorBest towns for jobs & income38 towns · #1 RogerstoneMost walkable towns38 towns · #1 MonmouthTowns with the lowest flood risk38 towns · #1 NantygloBest towns for the outdoors38 towns · #1 ChepstowMost historic towns38 towns · #1 AbergavennyTowns with the most civic life38 towns · #1 BrynmawrTowns with the highest household incomes38 towns · #1 RogerstoneDescribed, no lettersTowns with the lowest council tax38 towns · #1 Aberbargoed and 17 moreDescribed, no lettersTowns with the mildest winters38 towns · #1 CaldicotDescribed, no lettersTowns with the coolest summers38 towns · #1 Ebbw ValeDescribed, no lettersTowns with the fewest frosts38 towns · #1 Undy and MagorDescribed, no lettersDriest towns38 towns · #1 CaldicotDescribed, no lettersWettest towns38 towns · #1 New TredegarDescribed, no letters
County by county
Towns with the warmest summers, county by county
AberdeenshireBedfordshireBerkshireBuckinghamshireCambridgeshireCheshireClwydCornwallCounty DurhamCumbriaDerbyshireDevonDorsetDyfedEast Riding of YorkshireEast SussexEssexFifeGloucestershireGreater ManchesterGwentHampshireHertfordshireHighlandKentLancashireLeicestershireLincolnshireLondonMerseysideMid GlamorganNorfolkNorth LanarkshireNorth YorkshireNorthamptonshireNorthumberlandNottinghamshireOxfordshireShropshireSomersetSouth LanarkshireSouth YorkshireStaffordshireSuffolkSurreyTyne and WearWarwickshireWest GlamorganWest MidlandsWest SussexWest YorkshireWiltshireWorcestershire
Sources: . All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.