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Isle of Man Isle of ManBritish IslesIsland

Isle of Man

568 km² rising to 608 m out of the Irish Sea.

When to go

Isle of Man seen from space, cut out from the sea (Sentinel-2)
DouglasRamseyPeelPort ErinCastletownLaxeySanton
N 5 km

Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.

In numbers

568km²

Area

182km

Coastline

608m

Highest point

84,523

People

15°C

Warmest sea

August

504km

To the mainland

When to go to Isle of Man

Good all year round.

The sea is warmest in August (15 °C) and coolest in March (8 °C). The water never reaches 21 °C: bring a wetsuit.

Sea temperature (the water level) Air: night low to afternoon high Wet days

Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.

Main island of the Isle of Man British Crown Dependency

Isle of Man is an island in Isle of Man. It belongs to British Isles. It covers 568 km², with 182 km of coastline. Its highest point rises to 608 m. About 84,523 people live on it. The nearest mainland is 504 km away.

Read more on Wikipedia

Getting there

Plan the trip

Ferries, stays and things to do

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

On the island

What you find on Isle of Man.

  • 119beachesJohnsons Beach, Fenella Beach, Port Erin Beach and 116 more
  • 26viewpointsNiarbyl, Bradda Hill, Douglas Head and 23 more
  • 13lighthousesPoint of Ayre Winkie Lighthouse, Ramsey South Pier Lighthouse, Ramsey North Pier Lighthouse and 10 more
  • 3ferry terminalsDouglas, Isle of Man Sea Terminal
  • 2marinasDouglas Inner Harbour Marina, Peel Marina
  • 56named peaksSnaefell, North Barrule, Yellow Stone and 53 more
  • 6waterfallsWhite Spout, Rhenass Waterfall, Glen Maye and 3 more
  • 8castles and fortsBuggane Mooar, Boirane, Maughold Head and 5 more
  • 896ruins and archaeological sitesRushen Abbey, Langness Farm, Cross Vein Lead Mine and 893 more
  • 1dive centresDiscover Diving
  • 3waymarked walking routesWay of the Gull, Herring Road, Millennium Way
  • 22campsitesGlen Wyllin, Ballamoar Farm, Ballaspit and 19 more
  • 221hotels, guesthouses and apartments
  • 234restaurants, cafés and bars

Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.

Cross-checked with our atlases

Isle of Man in our other atlases

Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Isle of Man, each with its own numbers.

  • 1beachCoastya
  • 2lakesLakeyas
  • 4waterfallsCascadyas
  • Largest lake

    0.14km²

    Sulby Reservoir

    according to Lakeyas

  • Beach with the warmest sea

    15.2°C

    The Ayre

    sea in the warmest month · according to Coastya

1 beaches

on Coastya, the beach atlas

  1. The Ayre15.2°C

Open Coastya ↗

2 lakes

on Lakeyas, the lake atlas

  1. Sulby Reservoir0.14km²
  2. West Baldwin Reservoir0.14km²

Lakeyas is coming soonOpen Lakeyas ↗

4 waterfalls

on Cascadyas, the waterfall atlas

  1. Rhenas
  2. Spooyt Vane
  3. Rhenass Waterfall
  4. Glen Maye Waterfall

Cascadyas is coming soonOpen Cascadyas ↗

The shape of the land.

On average the island stands 137 m above the sea. 74 % of it is below 200 m.

  • 31 %0–50 m
  • 42 %50–200 m
  • 26 %200–500 m
  • <1 %500–1,000 m

Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).

Size, for real

Next to islands you may know.

Isle of Man568 km²
Madeira Island742 km²
Tenerife2,038 km²

20 km

All outlines drawn to the same scale (Natural Earth and OpenStreetMap).

Towns on the island

  • Douglas26,218 people
  • Ramsey7,845 people
  • Peel5,374 people
  • Port Erin3,530 people
  • Castletown3,100 people
  • Laxey1,768 people
  • Santonno census figure
  • Port Saint Maryno census figure
  • Patrickno census figure
  • Onchanno census figure
  • Maugholdno census figure
  • Lezayreno census figure

Month by month

The weather on the island.

JanFebMarAprMayJunJulAugSepOctNovDec
Afternoon high (°C)87810121516171513108
Night low (°C)55579121414131186
Sea (°C)88881012141515141210
Rain (mm)11491826571829310894128125125
Wet days191515141314161716182019
Sun h/day0.92.34.16.07.26.76.35.54.32.61.30.6
Wind (km/h)322926232220202225283031

Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.

Recent years

Warmer and cooler years at sea.

Each month's sea temperature compared with its 1991–2020 average, in degrees.

JanFebMarAprMayJunJulAugSepOctNovDec
2020+0.7+0.4+0.1+0.4+0.6+0.4+0.1+0.3+0.2−0.1+0.3+0.4
2021+0.4−0.1+0.4±0.0−0.1+0.4+1.7+0.6+1.0+0.8+1.0+0.6
2022+0.8+0.8+1.0+0.8+1.0+0.4+0.5+0.7+1.0+0.6+1.3+1.1
2023+1.3+1.1+1.0+0.8+1.2+1.5+0.8+0.8+1.4+1.1+1.1+1.0
2024+1.0+1.2+1.3+1.3+1.4+0.2±0.0+0.1+0.1+0.3+0.4+0.5
2025+0.7+0.6+1.0+1.2+1.6+1.1+1.1+0.8+0.6+0.6+0.8+0.7

+1 warmer than usual −1 cooler than usual

About these numbers

Names, area, populationWikidata (Q27508141) · CC0
Outline© OpenStreetMap contributors · ODbL
Sea temperatureNOAA OISST v2.1 · 1991–2020
ClimateNASA POWER · 1991–2020
Relief, 3D modelCopernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA
Beaches, ports, lighthouses, trails© OpenStreetMap contributors · ODbL
TownsGeoNames · CC BY 4.0
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Beaches, mountains, lakes and waterfallsCoastya, Lakeyas, Cascadyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST; HydroLAKES (Messager et al. 2016) · CC BY 4.0, LakeTEMP (Korver et al. 2024) · CC BY 4.0

Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.You are here
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.Visit
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit