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Brynamman Post Office (Recreated)Brynamman, #1 on this list · Photo: Nigel Davies · CC BY-SA 2.0
Dyfed rankings · Climate

Wettest towns in Dyfed

Brynamman is the wettest of Dyfed’s 23 towns of 2,500+: 1,716 mm of rain in a typical year (Met Office, 1991–2020). The typical town here gets 1,268 mm.

Rain in a typical year, in millimetres. 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.

#1

Brynamman

2,636 people
1,716mm

Rain a year·59 days of 10 mm+·#43 of 2,537 in England, Scotland, Wales and Northern Ireland

#2

Glanaman

3,866 people
1,713mm

Rain a year·57 days of 10 mm+·#44 of 2,537 in England, Scotland, Wales and Northern Ireland

All 23 towns, ranked

Rain a year, highest first. 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.

Every town in Dyfed →

23 towns.

#TownRain a yearDays 10 mm+UK rank
1Brynamman2,636 people1,716 mm59#43 of 2,537 nationally
2Glanaman3,866 people1,713 mm57#44 of 2,537 nationally
4Tumble4,040 people1,610 mm51#63 of 2,537 nationally
5Llandybie2,563 people1,551 mm54#79 of 2,537 nationally
6Ammanford8,282 people1,522 mm53#95 of 2,537 nationally
7Carmarthen16,448 people1,459 mm45#112 of 2,537 nationally
10Fishguard3,422 people1,297 mm40#193 of 2,537 nationally
11Lampeter2,505 people1,273 mm41#202 of 2,537 nationally
12Kidwelly2,761 people1,268 mm39#204 of 2,537 nationally
13Haverfordwest12,088 people1,264 mm41#209 of 2,537 nationally
14Saundersfoot2,515 people1,248 mm41#222 of 2,537 nationally
T15Cardigan3,767 people1,243 mm33#228 of 2,537 nationally
T15Llanelli42,143 people1,243 mm40#228 of 2,537 nationally
17Pembroke7,963 people1,199 mm38#272 of 2,537 nationally
18Neyland3,250 people1,194 mm38#280 of 2,537 nationally
20Burry Port4,966 people1,190 mm40#286 of 2,537 nationally
21Tenby4,092 people1,120 mm37#365 of 2,537 nationally
22Milford Haven14,251 people1,101 mm34#389 of 2,537 nationally
23Aberystwyth14,646 people1,016 mm28#541 of 2,537 nationally
Quick answers

Questions people ask

What is the wettest town in Dyfed?

Brynamman: 1,716 mm of rain in a typical year, the most in December 198 mm. Glanaman and Cross Hands and Pen-y-groes follow.

How are these towns ranked?

By the rain that falls in a typical year, most 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 Dyfed’s towns of 2,500+ with the figure. Smaller places show it on their own pages; every town in Dyfed is on the county page.

Go deeper

More Dyfed lists

Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.

All Dyfed rankings →
County by county

Wettest towns, county by county

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.