Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
0.086km²
Area
2km
Coastline
61m
Highest point
29
People
17°C
Warmest sea
August
177km
To the mainland
When to go to St Michael's Mount
Good all year round.
The sea is warmest in August (17 °C) and coolest in March (10 °C). The water never reaches 21 °C: bring a wetsuit.
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.
Tidal island in Mount's Bay, Cornwall
St Michael's Mount is an tidal island in United Kingdom. It covers 0.086 km², with 2 km of coastline. Its highest point rises to 61 m. About 29 people live on it. The nearest mainland is 177 km away.
Getting there
- Cornwall Airport Newquay (NQY)nearest airport with scheduled flights · 50 km in a straight lineCar hire at NQY airport (Newquay)Discover Cars · Affiliate link↗
- Ferries2 ferry terminals on the island
- 177 km from the mainlanddistance to the nearest continental coast
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 St Michael's Mount.
- 1beaches
- 2ferry terminals
- 1castles and fortsSt Michael's Mount Castle
- 3restaurants, 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.
The shape of the land.
On average the island stands 17 m above the sea. 100 % of it is below 200 m.
- 96 %0–50 m
- 4 %50–200 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.
0.2 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 10 | 10 | 10 | 11 | 13 | 15 | 17 | 17 | 16 | 15 | 12 | 11 |
| Night low (°C) | 9 | 8 | 8 | 9 | 11 | 14 | 16 | 16 | 15 | 13 | 11 | 10 |
| Sea (°C) | 10 | 10 | 10 | 10 | 12 | 14 | 16 | 17 | 16 | 14 | 13 | 12 |
| Rain (mm) | 107 | 87 | 81 | 63 | 62 | 63 | 79 | 75 | 62 | 105 | 116 | 113 |
| Wet days | 18 | 15 | 14 | 13 | 12 | 12 | 14 | 14 | 14 | 17 | 19 | 19 |
| Sun h/day | 1.3 | 2.9 | 4.5 | 7.0 | 7.9 | 8.2 | 7.4 | 6.7 | 5.9 | 3.4 | 1.9 | 1.1 |
| Wind (km/h) | 34 | 32 | 29 | 25 | 23 | 22 | 22 | 23 | 24 | 28 | 32 | 34 |
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | +0.3 | +0.4 | +0.1 | +0.4 | +0.5 | +0.7 | +0.2 | +0.7 | +0.6 | −0.1 | −0.2 | ±0.0 |
| 2021 | ±0.0 | +0.2 | +0.5 | +0.1 | −0.6 | +0.9 | +1.0 | +0.1 | +1.3 | +0.5 | +0.4 | +0.4 |
| 2022 | +0.5 | +0.7 | +0.8 | +0.9 | +1.3 | +0.6 | +0.6 | +1.4 | +1.4 | +0.6 | +0.7 | +0.5 |
| 2023 | +0.8 | +0.5 | +0.7 | +0.5 | +1.0 | +1.4 | ±0.0 | −0.4 | +1.2 | +1.1 | +0.5 | +0.5 |
| 2024 | +0.3 | +0.7 | +1.1 | +1.3 | +1.5 | +0.2 | −0.3 | ±0.0 | +0.1 | +0.6 | +0.8 | +0.5 |
| 2025 | +0.5 | +0.5 | +0.8 | +1.3 | +2.1 | +1.3 | +0.9 | +0.7 | −0.1 | +0.2 | +0.3 | +0.5 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
St Mary's
United Kingdom6.4 km²51 m62 km away
LundyUnited Kingdom4.2 km²141 m131 km away
Guernsey
Guernsey63 km²110 m221 km away
Île de Batz
France3.1 km²14 m186 km away
MolèneFrance0.76 km²25 m195 km awayBarry IslandUnited Kingdom41 m210 km away
SarkGuernsey5.3 km²114 m236 km away
Isle of PortlandUnited Kingdom12 km²149 m221 km awayAbout these numbers
| Names, area, population | Wikidata (Q1431121) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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