National Forecast
Issued at: 18 August 2026 20:30
TONIGHT
Cloudy and wet early tonight with widespread rain and drizzle. The rain will clear eastwards overnight, giving way to scattered showers, some of which will be heavy. Lowest temperatures of 11 to 14 degrees with light to moderate southwesterly winds.
TOMORROW - Wednesday 19th August
Widespread showers tomorrow, turning heavy at times with a chance of isolated thunderstorms. Highest temperatures of 15 to 20 degrees with light to moderate west to southwest winds, occasionally becoming fresh and gusty.
National Outlook
Overview: Breezy at first with widespread showers. Becoming brighter and drier from Friday onwards with occasional showers. Fresher than recently with daytime temperatures in the mid to high teens.
Wednesday night: Some heavy showers at first but these will ease and become less frequent overnight with clear spells also. Lowest temperatures of 11 to 14 degrees in moderate northerly winds, fresh near coasts.
Thursday: A breezy day with sunny spells and showers. Showers will become more widespread through the morning and afternoon with some turning heavy before becoming isolated during the evening. Highest temperatures of 15 to 19 degrees in moderate to fresh northerly winds.
Thursday night: Dry for many with clear spells and isolated light showers, mainly in the north. A cooler night with lowest temperatures of 8 to 11 degrees with northerly winds decreasing light to moderate early on.
Friday: Bright with spells of sunshine and well scattered showers. Many places will remain dry. Highest temperatures of 14 to 19 degrees in moderate northerly winds.
Saturday: Similarly, Saturday will be a bright day with spells of sunshine and scattered light showers. Highest temperatures of 15 to 19 degrees in light to moderate north to northwest winds.
Further outlook: Remaining mostly dry on Sunday and Monday with a few showers. Potentially turning more unsettled as next week progresses. Temperatures will range from the mid-teens to low twenties.
Temperature circle (°C): maximum and minimum temperature forecast for each day. Wind symbol (km/h): arrow points in the direction the wind is blowing. The weather and wind icons: for the time of maximum temperature and minimum temperature.