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Weather in Letterkenny, Ireland 🇮🇪

Current Weather in Letterkenny

Moderate rain
10°C
Feels like 6°C. Moderate rain.
🌬️ 39 km/h WNW
💧 94% Humidity
🧭 995 hPa
👁️ 7.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 7°C
🌅 Sunrise: 08:12 AM
🌇 Sunset: 06:18 PM
Map Overlays:

In Letterkenny right now it is 10°C and moderate rain, feeling like 6°C. Humidity is 94% with winds around 39 km/h, and the UV index is 0 (low). In the days ahead, expect temperatures in Letterkenny from about 2°C to 11°C.

Hourly Forecast for Letterkenny

09:00
Light rain
7°
82%
10:00
Light rain
6°
82%
11:00
Light rain
6°
80%
12:00
Light rain
6°
79%
13:00
Light rain
7°
74%
14:00
Light drizzle
7°
67%
15:00
Patchy rain nearby
7°
35%
16:00
Patchy rain nearby
8°
20%
17:00
Overcast
8°
18%
18:00
Patchy rain nearby
6°
22%
19:00
Patchy rain nearby
5°
24%
20:00
Patchy rain nearby
4°
25%
21:00
Clear
3°
13%
22:00
Clear
3°
13%
23:00
Clear
2°
13%
00:00
Clear
2°
14%
01:00
Clear
2°
15%
02:00
Clear
2°
17%
03:00
Mist
2°
24%
04:00
Mist
3°
24%
05:00
Mist
3°
24%
06:00
Mist
4°
23%
07:00
Mist
4°
22%
08:00
Mist
3°
23%

14-Day Forecast for Letterkenny

Wed, Oct 21
Light rain Light rain
10° / 2°
Thu, Oct 22
Mist Mist
11° / 2°
Fri, Oct 23
Patchy rain nearby Patchy rain nearby
10° / 6°
Sat, Oct 24
Overcast Overcast
13° / 4°
Sun, Oct 25
Patchy rain nearby Patchy rain nearby
9° / 6°
Mon, Oct 26
Patchy rain nearby Patchy rain nearby
15° / 4°
Tue, Oct 27
Patchy rain nearby Patchy rain nearby
13° / 8°
Wed, Oct 28
Patchy rain nearby Patchy rain nearby
10° / 8°
Thu, Oct 29
Patchy rain nearby Patchy rain nearby
13° / 8°
Fri, Oct 30
Patchy rain nearby Patchy rain nearby
15° / 8°
Sat, Oct 31
Patchy rain nearby Patchy rain nearby
8° / 4°
Sun, Nov 01
Patchy rain nearby Patchy rain nearby
10° / 6°
Mon, Nov 02
Overcast Overcast
10° / 5°
Tue, Nov 03
Patchy rain nearby Patchy rain nearby
11° / 5°

Additional Forecasts for Letterkenny

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 142.0 μg/m³
O₃ (Ozone) 76.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.8 μg/m³
SO₂ (Sulphur Dioxide) 0.1 μg/m³
PM2.5 (Fine particles) 1.6 μg/m³
PM10 (Coarse particles) 3.9 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Ireland

Browse Weather in Ireland by cities in alphabetical order:

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Weather in Ireland ›

Best Time to Be Outside in Letterkenny Today

The most comfortable window in Letterkenny today looks like 16:00 to 19:00, when it is around 7°C. It should stay dry through that window. The next likely rain is around 09:00.

Frequently Asked Questions about Weather in Letterkenny

What is the temperature in Letterkenny right now?

Letterkenny is sitting at 10°C (50°F) right now, moderate rain (feels like 6°C).

What's the weather like in Letterkenny right now?

Conditions in Letterkenny right now: Moderate rain, humidity 94%, wind 39 km/h WNW.

What is today's forecast for Letterkenny?

Today in Letterkenny: high 10°C, low 2°C, light rain. Chance of rain: 90%.

What is the 7-day weather forecast for Letterkenny?

Daily highs and lows for Letterkenny:

  • 2026-10-21: 10°C / 2°C
  • 2026-10-22: 11°C / 2°C
  • 2026-10-23: 10°C / 6°C
  • 2026-10-24: 13°C / 4°C
  • 2026-10-25: 9°C / 6°C
  • 2026-10-26: 15°C / 4°C
  • 2026-10-27: 13°C / 8°C
Is it going to rain in Letterkenny today?

There is a 90% chance of rain in Letterkenny today. Total expected precipitation: 16.19 mm.

What is the wind speed in Letterkenny right now?

Wind in Letterkenny is currently 39 km/h (24 mph) from the WNW.

What is the UV index in Letterkenny right now?

The UV index in Letterkenny is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇮🇪 Ireland: Dublin · South Dublin · Cork · Limerick · Galway · Tallaght · Swords · Drogheda · Bray · Dún Laoghaire · Ennis · Navan · Carlow · Tralee · Droichead Nua · Sandyford · Balbriggan · Kilkenny · Athlone · Naas · Celbridge · Wexford · Finglas · Letterkenny · Sligo · Ballincollig · Greystones · Rathfarnham · An Muileann gCearr · Cluain Meala · Malahide · Blanchardstown · Carrigaline · Leixlip · Donaghmede · Lucan · Kilquade · Castletroy · Knocklyon · Maynooth · Clondalkin · Cill Airne · Shankill · Wicklow
Weather forecasts for cities in neighbouring countries: 🇬🇧 United Kingdom: London · Birmingham · Liverpool · Glasgow · Sheffield · Leeds