Lake · Ireland
Lough Conn
Lake in Ireland
- Area
- 43.7km²
- Max depth
- 28m
- Average depth
- 6.3m
- Elevation
- 6m a.s.l.
- Shoreline
- 87km
- Volume
- 0.274km³
Lough Conn is a lake in Ireland. It covers 43.7 km². On average it is 6.3 m deep, and 28 m at its deepest point. Its surface lies 6 m above sea level.
Plan your visit
Stay, sail and get there
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The water
Water temperature
There is no reliable satellite record of the water temperature for this lake yet.
On the shore, afternoons reach 17 °C on average in July and 8 °C in January. The driest month is April (76 mm of rain), the wettest November (136 mm).
From above
The whole lake from space
Month by month
The year at the lake, month by month
Not a forecast: these are averages over many years. Water is the 2013–2021 average; air, rain, sun and wind are the 1991–2020 average.
Climate: 1991–2020 average
| Month | Water°C | Water high°C | Air high°C | Air low°C | Rainmm | Rainy daysdays | Sunh/day | Windkm/h |
|---|---|---|---|---|---|---|---|---|
| January | — | — | 8 | 4 | 129 | 21 | 0.9 | 26 |
| February | — | — | 8 | 3 | 100 | 18 | 2.3 | 25 |
| March | — | — | 9 | 4 | 94 | 19 | 3.8 | 24 |
| April | — | — | 11 | 5 | 76 | 17 | 6.0 | 20 |
| May | — | — | 14 | 8 | 92 | 17 | 7.0 | 21 |
| June | — | — | 16 | 10 | 97 | 18 | 6.2 | 19 |
| July | — | — | 17 | 12 | 112 | 22 | 5.1 | 18 |
| August | — | — | 17 | 12 | 118 | 21 | 4.8 | 19 |
| September | — | — | 16 | 10 | 103 | 19 | 3.9 | 21 |
| October | — | — | 13 | 8 | 122 | 20 | 2.6 | 22 |
| November | — | — | 10 | 6 | 136 | 22 | 1.1 | 23 |
| December | — | — | 8 | 4 | 136 | 22 | 0.6 | 25 |
Water: LakeTEMP (Landsat 8, 2013–2021). Air, rain, sun and wind: NASA POWER, 1991–2020 averages. A rainy day has at least 1 mm of rain. Sunshine hours are derived from measured solar radiation.
Size & depth
How big, how deep
- On average, water stays in the lake for about 7 months before flowing out.
- Its catchment drains 434 km² of land.
- About 14 m³ of water flow out every second, on average.
- Its shoreline is 3.7 times longer than a circle of the same area: plenty of bays and inlets.
Around the shore
What's around Lough Conn
Counted within 1.5 km of the shoreline in OpenStreetMap, the map anyone can edit.
- 2beaches and swimming spots
- —campsites
- —boat hire and water-sport clubs
- 5marinas and slipways
- —ferry piers
- 4viewpoints
Lough Cullin
- 2hotels, B&Bs and chalets
Dolphin Hotel, Pontoon Bridge Hotel
- —fishing spots
- 1restaurants and cafés
Towns on the shore
- Crossmolina1,044 people
Nearest airport with scheduled flights: Ireland West Airport Knock (NOC), 30 km in a straight line.
Car hire at NOC airport (Charlestown)Discover Cars · Affiliate linkOpenStreetMap is built by volunteers: when a number is low, it may just mean nobody has mapped it yet.
Photos
Seen by visitors
Recent years
How each month compared
Afternoon high on the shore. The first row is the reference, the 1991–2020 average in °C; the years below show the difference from it: warmer in orange, cooler in blue.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | 7.5 | 7.5 | 8.8 | 11.2 | 13.8 | 16.2 | 17.3 | 17.1 | 15.7 | 12.7 | 9.7 | 7.8 |
| 2020 | +0.8 | −0.1 | −0.6 | +1.3 | +1.3 | −0.9 | −1.2 | +1.2 | +0.2 | −1.2 | +0.5 | −0.4 |
| 2021 | −1.2 | +0.1 | +0.9 | −0.3 | −0.9 | −0.5 | +2.7 | +1.1 | +1.6 | +0.9 | +1.2 | +0.9 |
| 2022 | +0.9 | +1.1 | +1.5 | +0.9 | +0.6 | −0.4 | +1.0 | +1.5 | +0.6 | +1.3 | +1.1 | −1.2 |
| 2023 | +0.5 | +1.9 | +0.2 | +0.7 | +1.7 | +3.9 | −0.3 | +0.5 | +1.8 | +0.5 | +0.2 | +1.0 |
| 2024 | −0.3 | +1.4 | +0.6 | +0.2 | +1.8 | −1.0 | −0.4 | −0.1 | −0.3 | +0.8 | +1.1 | +1.4 |
| 2025 | −0.3 | +0.6 | +1.9 | +2.6 | +2.8 | +0.9 | +1.4 | +2.1 | −0.4 | +0.2 | +0.5 | +0.4 |
+1 warmer than usual −1 cooler than usual
United KingdomAbout these numbers
| Outline, area, depth, volume | HydroLAKES v1.0 (Messager et al. 2016) · CC BY 4.0 |
|---|---|
| Water temperature and ice | LakeTEMP v1 (Korver et al. 2024), Landsat 8 2013–2021 · CC BY 4.0 |
| Air, rain, sun, wind | NASA POWER, 1991–2020 · public domain |
| Names and description | Wikidata (Q949985) · CC0 |
| Around the shore | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average or a count from a public dataset. Licences and methods: data sources.
