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Weather in Letterkenny, Ireland 🇮🇪

Weather Forecast in Letterkenny

Current Weather in Letterkenny

Partly cloudy
16°C
Feels like 16°C. Partly cloudy.
🌬️ 19 km/h NNW
💧 82% Humidity
🧭 1030 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.9
🌡️ Dew Point: 12°C
🌅 Sunrise: 05:23 AM
🌇 Sunset: 09:51 PM
Map Overlays:

In Letterkenny right now it is 16°C and partly cloudy, feeling like 16°C. Humidity is 82% with winds around 19 km/h, and the UV index is 1 (low). In the days ahead, expect temperatures in Letterkenny from about 9°C to 22°C.

Hourly Forecast for Letterkenny

10:00
Patchy rain nearby
16°
24%
11:00
Patchy rain nearby
16°
26%
12:00
Patchy rain nearby
16°
29%
13:00
Patchy rain nearby
17°
27%
14:00
Patchy rain nearby
18°
23%
15:00
Cloudy
18°
16%
16:00
Partly Cloudy
19°
11%
17:00
Partly Cloudy
19°
9%
18:00
Partly Cloudy
18°
9%
19:00
Partly Cloudy
17°
10%
20:00
Partly Cloudy
16°
12%
21:00
Partly Cloudy
14°
16%
22:00
Mist
12°
30%
23:00
Fog
11°
42%
00:00
Fog
12°
43%
01:00
Fog
12°
42%
02:00
Mist
13°
38%
03:00
Overcast
14°
32%
04:00
Cloudy
13°
28%
05:00
Mist
12°
30%
06:00
Mist
12°
28%
07:00
Mist
13°
28%
08:00
Partly Cloudy
14°
17%
09:00
Partly Cloudy
16°
15%

14-Day Forecast for Letterkenny

Wed, Jul 22
Partly Cloudy Partly Cloudy
19° / 11°
Thu, Jul 23
Sunny Sunny
22° / 10°
Fri, Jul 24
Partly Cloudy Partly Cloudy
21° /
Sat, Jul 25
Patchy rain nearby Patchy rain nearby
17° / 14°
Sun, Jul 26
Patchy rain nearby Patchy rain nearby
17° / 12°
Mon, Jul 27
Patchy rain nearby Patchy rain nearby
19° / 14°
Tue, Jul 28
Patchy rain nearby Patchy rain nearby
19° /
Wed, Jul 29
Partly Cloudy Partly Cloudy
18° /
Thu, Jul 30
Light drizzle Light drizzle
15° /
Fri, Jul 31
Light drizzle Light drizzle
18° / 14°
Sat, Aug 01
Patchy rain nearby Patchy rain nearby
17° /
Sun, Aug 02
Mist Mist
16° /
Mon, Aug 03
Patchy rain nearby Patchy rain nearby
17° /
Tue, Aug 04
Partly Cloudy Partly Cloudy
20° /

Additional Forecasts for Letterkenny

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 103.0 μg/m³
O₃ (Ozone) 65.0 μg/m³
NO₂ (Nitrogen Dioxide) 1.0 μg/m³
SO₂ (Sulphur Dioxide) 0.2 μg/m³
PM2.5 (Fine particles) 4.9 μg/m³
PM10 (Coarse particles) 10.1 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Ireland

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Best Time to Be Outside in Letterkenny Today

The most comfortable window in Letterkenny today looks like 16:00 to 18:00, when it is around 19°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Letterkenny

What is the temperature in Letterkenny right now?

Letterkenny is sitting at 16°C (61°F) right now, partly cloudy (feels like 16°C).

What's the weather like in Letterkenny right now?

Conditions in Letterkenny right now: Partly cloudy, humidity 82%, wind 19 km/h NNW.

What is today's forecast for Letterkenny?

Today in Letterkenny: high 19°C, low 11°C, partly cloudy. Chance of rain: 30%.

What is the 7-day weather forecast for Letterkenny?

Daily highs and lows for Letterkenny:

  • 2026-07-22: 19°C / 11°C
  • 2026-07-23: 22°C / 10°C
  • 2026-07-24: 21°C / 9°C
  • 2026-07-25: 17°C / 14°C
  • 2026-07-26: 17°C / 12°C
  • 2026-07-27: 19°C / 14°C
  • 2026-07-28: 19°C / 9°C
Is it going to rain in Letterkenny today?

There is a 30% chance of rain in Letterkenny today. Total expected precipitation: 0.13 mm.

What is the wind speed in Letterkenny right now?

Wind in Letterkenny is currently 19 km/h (12 mph) from the NNW.

What is the UV index in Letterkenny right now?

The UV index in Letterkenny is currently 0.9 (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