Holy Island Weather Forecast, Isle of Anglesey

Today 25 Aug Wales

A glorious Bank Holiday Monday is on the cards. It will be dry with a good deal of sunshine, lifting temperatures into the mid to upper twenties Celsius. The heat will be tempered slightly though by a freshening southerly breeze. Maximum Temperature 28C.

Tonight 25 Aug Wales

After some evening sunshine eastern parts will have clear skies at first overnight. However, a band of rain, some heavy, will move eastwards across the country. Clearer spells returning later. Minimum Temperature 12C.

Tue 26 Aug Wales

A much fresher day is expected tomorrow with a west to southwesterly breeze and a mix of sunshine and scattered showers. One or two of the showers could be heavy. Maximum Temperature 21C.

Wed 27 Aug Wales

Low pressure will dominate the weather during the middle and end of the week. There will be further showers or longer spells of rain, and it will remain rather breezy.

Thu 28 Aug Wales

Low pressure will dominate the weather during the middle and end of the week. There will be further showers or longer spells of rain, and it will remain rather breezy.

Fri 29 Aug Wales

Low pressure will dominate the weather during the middle and end of the week. There will be further showers or longer spells of rain, and it will remain rather breezy.

Sat 30 Aug Wales

Low pressure is expected to largely dominate through this period, bringing bands of rain or showers to most if not all parts from time to time. Some heavy rain is possible at times, especially in the west, but this possibly occurring more widely at times. Periods of windier weather are also likely. Confidence in the details remains on the low side, something not untypical at this time of year, largely due to the potential for further systems to develop in the tropical Atlantic, which can have profound knock-on effects on the weather patterns upstream of and over the UK. Temperatures should generally be around average, likely with some day to day oscillation, depending on sunshine amounts.

Sun 31 Aug Wales

Low pressure is expected to largely dominate through this period, bringing bands of rain or showers to most if not all parts from time to time. Some heavy rain is possible at times, especially in the west, but this possibly occurring more widely at times. Periods of windier weather are also likely. Confidence in the details remains on the low side, something not untypical at this time of year, largely due to the potential for further systems to develop in the tropical Atlantic, which can have profound knock-on effects on the weather patterns upstream of and over the UK. Temperatures should generally be around average, likely with some day to day oscillation, depending on sunshine amounts.

Holy Island Weather Forecast

Today 25 Aug Wales

Tonight 25 Aug Wales

Tue 26 Aug Wales

Wed 27 Aug Wales

Thu 28 Aug Wales

Fri 29 Aug Wales

Sat 30 Aug Wales

Sun 31 Aug Wales

Temperature Forecast Met Office

Temperature Real-Time

Dublin Radar

National Satellite

National Synoptic

Holy Island Temperature Statistics

August Temperature

Valley (3km)

Lowest 10 January, 2025

Average 2025

Highest 12 July, 2025

Lowest 2 July, 2025

Average July

Highest 12 July, 2025

Lowest 10 August, 2025

Average August

Highest 12 August, 2025

Climate (2020–Present)

Valley (3km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025