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Photo: Lough Allen Spencer Harbour 2003 09 11.jpg via Wikidata Q1366974 License

Lough Allen

Lake

Cool today

Lough Allen (Irish: Loch Aillionn) is a lake on the River Shannon in northeastern Connacht, Ireland. Most of the lake is in County Leitrim, with a smaller part in County Roscommon. The lake lies to the south of the River Shannon's source, near the Iron Mountains, and is the uppermost of the three main lakes on the river.

Interactive map not available

Weather at Lough Allen

H: 61° L: 47°
Sunny
Sunny
59°
|
Feels like 57°
Precipitation
13%
Humidity
61%
Wind
3 mph
UV Index
0.4
Water Conditions:
🥶Too cold for most swimmers
12 AM
Partly Cloudy
50°
3 AM
Overcast
49°
6 AM
Overcast
53°
9 AM
Overcast
55°
12 PM
Overcast
58°
3 PM
Partly Cloudy
59°
6 PM
Sunny
61°
9 PM
Clear
52°

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Frequently asked questions

Where is Lough Allen?
Lough Allen is a lake in Northern Ireland.
Can you swim at Lough Allen?
There is no fixed answer for Lough Allen: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Lough Allen in Northern Ireland. Check current water conditions before you go, and follow posted signs and local guidance.

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Best Times to Visit

🧥
Right Now
Cool weather - dress warmly
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Northern Ireland

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