Strangford Lough - Castleward Bay Weather Forecast, Down

Today 1 Jan Northern Ireland

A cloudy day with the occasional bright spell interspersed with a few showers, these becoming wintry in the east towards the evening. Windy along the coasts. Maximum Temperature 5C.

Tonight 1 Jan Northern Ireland

Some rain showers this evening. Showers will turn increasingly wintry to lower levels through the night, though accumulations of snow will be mainly over higher ground. Risk of ice. Windy, especially near coasts with a bitter wind chill. Minimum Temperature 0C.

Fri 2 Jan Northern Ireland

A cold day with wintry showers, especially in the north. Drier in the south with more in the way of sunny spells. Breezy with a bitter wind chill. Maximum Temperature 4C.

Sat 3 Jan Northern Ireland

Remaining cold or very cold through the period with occasional wintry showers. Often breezy, especially near coasts.

Sun 4 Jan Northern Ireland

Remaining cold or very cold through the period with occasional wintry showers. Often breezy, especially near coasts.

Mon 5 Jan Northern Ireland

Remaining cold or very cold through the period with occasional wintry showers. Often breezy, especially near coasts.

Tue 6 Jan Northern Ireland

The recent spell of cold, northerly winds should begin to ease by the middle of next week, with snow showers in the north and east becoming lighter and less frequent. However, bands of rain seem likely to gradually move in off the Atlantic and, as these encounter the cold air entrenched over the UK, some further snowfall is possible, particularly in central and eastern areas, with rain more likely in the west. From next weekend, the outlook becomes more uncertain. Most likely is that conditions will be less cold than recently, but there still remains potential for further spells of snow, especially in northern and central areas. Further south and west, some milder interludes are possible, with the chance of some heavier rain and stronger winds at times.

Wed 7 Jan Northern Ireland

The recent spell of cold, northerly winds should begin to ease by the middle of next week, with snow showers in the north and east becoming lighter and less frequent. However, bands of rain seem likely to gradually move in off the Atlantic and, as these encounter the cold air entrenched over the UK, some further snowfall is possible, particularly in central and eastern areas, with rain more likely in the west. From next weekend, the outlook becomes more uncertain. Most likely is that conditions will be less cold than recently, but there still remains potential for further spells of snow, especially in northern and central areas. Further south and west, some milder interludes are possible, with the chance of some heavier rain and stronger winds at times.

Strangford Lough - Castleward Bay Weather Forecast

Today 1 Jan Northern Ireland

Tonight 1 Jan Northern Ireland

Fri 2 Jan Northern Ireland

Sat 3 Jan Northern Ireland

Sun 4 Jan Northern Ireland

Mon 5 Jan Northern Ireland

Tue 6 Jan Northern Ireland

Wed 7 Jan Northern Ireland

Temperature Forecast Met Office

Temperature Real-Time

Castor Bay (Lurgan) Radar

National Satellite

National Synoptic

Strangford Lough - Castleward Bay Temperature Statistics

January Temperature

Aldergrove (53km)

Lowest

Average 2026

Highest

Lowest 16 December, 2025

Average December

Highest 9 December, 2025

Lowest

Average January

Highest

Climate (2021–Present)

Aldergrove (53km)

Average Low 2021–2025

Average 2021–2025

Average High 2021–2025