Live Weather & Forecast
Weather in Letterkenny
Donegal, Ireland · Real-time conditions & 3-day outlook
12°C
Feels like 11°C
54°F / Feels 52°F
Light rain
Letterkenny, Donegal
🌞 Daytime
Updated: 2026-04-15 11:00
Humidity
88%
Wind
9 km/h SSE
Wind Gust
13.2 km/h
Pressure
1001 mb
Visibility
8 km
UV Index
0.3
(Low)
Precipitation
0.85 mm
Cloud Cover
75%
Dew Point
8.1°C
Wind Degree
168°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
123.9 μg/m³
NO₂
2.9 μg/m³
O₃
64 μg/m³
SO₂
1.2 μg/m³
PM 2.5
2.4 μg/m³
PM 10
3.2 μg/m³
Today's Hourly Forecast
24-hour breakdown for Letterkenny, Donegal
12 AM
11°
Light rain
1 AM
11°
Light drizzle
2 AM
11°
Patchy rain nearby
3 AM
11°
Light drizzle
4 AM
11°
Patchy rain nearby
5 AM
11°
Patchy rain nearby
6 AM
11°
Light drizzle
7 AM
11°
Light rain
8 AM
9°
Light rain
9 AM
9°
Light drizzle
10 AM
9°
Light drizzle
11 AM
12°
Light rain
12 PM
9°
Light drizzle
1 PM
9°
Light drizzle
2 PM
10°
Light drizzle
3 PM
11°
Moderate rain
4 PM
10°
Light rain shower
5 PM
11°
Light rain
6 PM
11°
Patchy rain nearby
7 PM
10°
Light drizzle
8 PM
9°
Light rain
9 PM
8°
Patchy rain nearby
10 PM
8°
Light rain shower
11 PM
8°
Light drizzle
3-Day Forecast
Daily overview for Letterkenny, Donegal
Today
Moderate rain
11°
/
8°
🌧️ 98% chance of rain
💧 Avg. humidity: 93%
💨 Max wind: 25.2 km/h
🌧️ Total precip: 14.91 mm
☀️ UV Index: 0.5
🌅 Sunrise: 06:27 AM
🌇 Sunset: 08:34 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
14°
/
7°
🌧️ 89% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 26.6 km/h
🌧️ Total precip: 1.55 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:25 AM
🌇 Sunset: 08:36 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
14°
/
8°
🌧️ 88% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 29.2 km/h
🌧️ Total precip: 4.96 mm
☀️ UV Index: 0.8
🌅 Sunrise: 06:22 AM
🌇 Sunset: 08:38 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Letterkenny
Plan your trip to Letterkenny, Ireland around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Letterkenny?
Current conditions in Letterkenny: Light rain, temperature 12°C, humidity 88%.
What is the best time to visit Letterkenny?
The best time to visit Letterkenny is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Letterkenny?
Letterkenny is located at approximately 55° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Letterkenny?
The wettest period in Letterkenny is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Letterkenny?
For visits to Letterkenny during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Letterkenny in 2026?
View the 2026 public holidays for Letterkenny on our Holidays page.
What are the GPS coordinates used for the weather forecast in Letterkenny?
The weather forecast for Letterkenny uses coordinates 54.9518, -7.7354.