Ulster
Issued at: 12 August 2026 06:00
TODAY - Wednesday 12th August
Warm today, Wednesday. It'll be mostly cloudy to begin today, with showery rain moving up from the south this morning, easing this afternoon with hazy sunny spells developing later. Highest temperatures of 21 to 25 degrees in a moderate southerly breeze.
TONIGHT
Mainly dry tonight with variable cloud and clear spells. The odd shower is possible in the west of the region towards morning. There'll be some mist and fog patches around too. It'll be another mild and muggy night with lowest temperatures of 15 to 17 degrees.
Pollen Forecast
Moderate.
Solar UV Index
Moderate to high on Wednesday; Low to moderate on Thursday.
TOMORROW - Thursday 13th August
Tomorrow, Thursday, will be another warm or hot day with sunny spells and scattered showers. A few of the showers could be heavy with isolated thunderstorms possible. Highest temperatures of 20 to 27 degrees, in a light to moderate southwest to west wind.
National Outlook
Overview: Turning fresher by Friday with a return to a more Atlantic-driven regime by early next week.
Thursday Night: Any remaining showers or thunderstorms will ease eastwards on Thursday night, with clear spells and isolated showers following. Lowest temperatures of 12 to 17 degrees in light, occasionally moderate, westerly breezes.
Friday: Friday will be a fresher day with a mix of sunny spells and scattered showers spreading from the west, becoming increasingly isolated later. Maximum temperatures will fall back to between 17 and 23 degrees in light to moderate northwesterly winds. Mainly dry on Friday night with variable cloud and clear spells and just the chance of an odd shower in the west and north. Lowest temperatures of 10 to 13 degrees in mainly light west to northwest breezes.
Saturday: Saturday will be mainly dry with a mix of cloud, sunny spells and isolated showers. Highest temperatures will range from around 15 degrees in the northwest to 21 degrees in the southeast in a light to moderate west to northwest breeze.
Sunday: There is still a degree of uncertainty in the details for Sunday at present, but current indications suggest a mostly cloudy day with outbreaks of rain pushing in from the Atlantic, possibly turning heavy in the west and northwest later in the day. Highest temperatures of 15 to 19 degrees with light to moderate southeasterly winds freshening later near Atlantic coasts.
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.