Ulster weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Ulster, Ireland. Like most weather services, we show Ulster at one spot: Letterkenny, its largest city. At 9:30 PM local time it was mostly clear and 9°C (49°F). Little to no rain in the next 24 hours. Best months for weather: May–Sep.
Current conditions
- Clouds
- 34%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season May–SepOff season Nov–Feb
About Letterkenny weather
Is it raining in Letterkenny right now?
No. It’s mostly clear and 9° right now. Little to no rain in the next 24 hours.
What’s the weather like in Letterkenny this week?
Over the next 7 days, expect highs of 7–13° and lows of 1–8°. Rain is likely on 1 of 7 days (Saturday). The driest day looks like Sunday.
Has it been raining in Letterkenny lately?
In the past 7 days, Letterkenny had 5 rainy days and 58.6 mm of rain in total.
What should I pack for Letterkenny?
For the coming week, bring an umbrella or rain jacket and a warm winter coat.
Ulster weather by month
When is the best time to visit Ulster?
Based on weather alone, the best time to visit Ulster is May–Sep, according to NASA's 2001–2025 climate averages. Nov–Feb tends to be the least pleasant. Average highs run from 7°C (44°F) in February to 17°C (62°F) in July.
What is the rainiest month in Ulster?
November is the wettest month, with about 126 mm (5.0 in) of rain on average. April is the driest, with about 72 mm (2.8 in).
What is the hottest month in Ulster?
July is the warmest, with average highs of 17°C (62°F) and lows of 11°C (52°F). February is the coolest, with highs of 7°C (44°F) and lows of 3°C (37°F).
Does Ulster have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is November at about 126 mm (5.0 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Letterkenny), forecast and current conditions from Open-Meteo. Page updated . How we rate months