Ystradgynlais Weather Forecast, Powys SA9 1

Today 14 Jun Wales

Heavy outbreaks of rain move gradually northwards, bringing a risk of hail, thunderstorms, and gusty winds. Brighter spells developing in the afternoon, though further heavy showers also likely across the south. Feeling warm in the sunshine, though fresher than Friday. Maximum Temperature 20C.

Tonight 14 Jun Wales

Evening showers fade away to leave a mostly settled night. Plenty of clear spells at first, although turning cloudier in the north overnight with patchy rain spreading southeastwards by dawn. Feeling fresher than recent nights in a westerly breeze. Minimum Temperature 13C.

Sun 15 Jun Wales

Cloudy in the north with some patchy rain in places. Drier and brighter further south, though a few showers may pop up through the afternoon. Feeling cooler with near-average temperatures. Maximum Temperature 20C.

Mon 16 Jun Wales

Becoming widely dry and more settled as high pressure builds from the southwest. Patchy rain confined to the hills, and feeling warm in the sunshine with temperatures on the rise.

Tue 17 Jun Wales

Becoming widely dry and more settled as high pressure builds from the southwest. Patchy rain confined to the hills, and feeling warm in the sunshine with temperatures on the rise.

Wed 18 Jun Wales

Becoming widely dry and more settled as high pressure builds from the southwest. Patchy rain confined to the hills, and feeling warm in the sunshine with temperatures on the rise.

Thu 19 Jun Wales

Most parts of the UK are expected to be fine and dry at the start of this period, then a broad northwest to southeast split is likely to develop in late June. The wettest and windiest conditions are expected to be in the northwest, with spells of rain at times which may be heavy in places. It will likely be very warm or perhaps hot at first in the north, temperatures quickly becoming near normal or slightly above. More settled in the southeast with conditions drier overall, although some rain will probably spread from the west or northwest at times. There is also the risk that isolated heavy showers and thunderstorms could develop at times. Temperatures are expected to be above normal, perhaps with some hot spells in the southeast.

Fri 20 Jun Wales

Most parts of the UK are expected to be fine and dry at the start of this period, then a broad northwest to southeast split is likely to develop in late June. The wettest and windiest conditions are expected to be in the northwest, with spells of rain at times which may be heavy in places. It will likely be very warm or perhaps hot at first in the north, temperatures quickly becoming near normal or slightly above. More settled in the southeast with conditions drier overall, although some rain will probably spread from the west or northwest at times. There is also the risk that isolated heavy showers and thunderstorms could develop at times. Temperatures are expected to be above normal, perhaps with some hot spells in the southeast.

Ystradgynlais Weather Forecast

Today 14 Jun Wales

Tonight 14 Jun Wales

Sun 15 Jun Wales

Mon 16 Jun Wales

Tue 17 Jun Wales

Wed 18 Jun Wales

Thu 19 Jun Wales

Fri 20 Jun Wales

Temperature Forecast Met Office

Temperature Real-Time

Crug-y-Gorllwyn (Carmarthenshire) Radar

National Satellite

National Synoptic

Ystradgynlais Temperature Statistics

June Temperature

Sennybridge (32km)

Lowest 9 January, 2025

Average 2025

Highest 1 May, 2025

Lowest 6 May, 2025

Average May

Highest 1 May, 2025

Lowest 2 June, 2025

Average June

Highest 11 June, 2025

Climate (2020–Present)

Sennybridge (32km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025