See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
14°
Drizzle
Feels Like: 13°
Min: 10°
Max: 17°
The next few hours will be overcast, with tomorrow reaching 15°C and dropping to 12°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:30
Sunrise
19:14
Sunset
Moon
Waxing Gibbous
18:40
Moonrise
04:19
Moonset
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View stargazing scoreWeather in Letterkenny tomorrow, September 25, 2026
Expect a muted, overcast feel in Letterkenny on September 25, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief. Early hours look the most unsettled, with rain probability near 52% by 00:00. The thickest cloud arrives around 00:00, reaching about 100%.
Expect highs of 15°C and cooler readings close to 11°C. Moisture in the air spans 69%-92%, with the highest values around 00:00. Winds stay light, near 6.0 km/h by 16:00, so the day feels still more than breezy.
Afternoon conditions improve on the morning wet spell, as rain chances fall toward 0% from about 52% earlier. Cloud still reaches roughly 100% near 12:00. Expect visibility near 30.5 km, with poorer spells close to 21.5 km. Expect sunrise at 07:32, sunset at 19:11, and 11 hours 39 minutes of sunlight today overall.
Taken together, Letterkenny looks wet enough on September 25, 2026 that flexible outdoor plans work best, with temperatures peaking near 15°C.
Frequently asked questions about weather in Letterkenny
How warm does it get in Letterkenny?
The warmest month in Letterkenny is August, with average high temperatures of 17°C. The average temperature during this period is around 15°C.
How cold does it get in Letterkenny?
The coldest month in Letterkenny is January, with average low temperatures of 4°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Letterkenny?
The wettest month in Letterkenny is August, with an average of 126mm of precipitation.
What is the driest time of year in Letterkenny?
The driest month in Letterkenny is April, with an average of 80mm of precipitation.
