Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
1.3km²
Area
7km
Coastline
66m
Highest point
60
People
17°C
Warmest sea
September
41km
To the mainland
When to go to Herm
Good all year round.
The sea is warmest in September (17 °C) and coolest in March (9 °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.
One of the Channel Islands. Part of the Bailiwick of Guernsey, which is one of the British Crown Dependencies.
Herm is an island in Guernsey. It belongs to Channel Islands. It covers 1.3 km², with 7 km of coastline. Its highest point rises to 66 m. About 60 people live on it. The nearest mainland is 41 km away.
Getting there
- Guernsey Airport (GCI)nearest airport with scheduled flights · 12 km in a straight lineCar hire at GCI airport (Saint Peter Port)Discover Cars · Affiliate link↗
- FerriesGuernsey - Herm
- 41 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 Herm.
- 12beachesShell Beach, Mouisonniere, The Bear's Beach and 9 more
- 4viewpointsMonku and 3 more
- 2ferry terminals
- 3named peaksMonku, Le Grand Monceau, Le Petit Monceau
- 6ruins and archaeological sitesRobert's Cross, Mystery Grave, Neolithic Graves and 3 more
- 2campsitesSeagull Camping Site
- 2hotels, guesthouses and apartments
- 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 32 m above the sea. 100 % of it is below 200 m.
- 75 %0–50 m
- 25 %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.
1 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 | 9 | 10 | 11 | 13 | 15 | 17 | 18 | 17 | 16 | 13 | 11 |
| Night low (°C) | 8 | 8 | 8 | 9 | 11 | 14 | 16 | 16 | 16 | 14 | 12 | 9 |
| Sea (°C) | 10 | 10 | 9 | 10 | 12 | 14 | 16 | 17 | 17 | 16 | 14 | 12 |
| Rain (mm) | 96 | 79 | 68 | 47 | 51 | 46 | 46 | 54 | 47 | 96 | 110 | 106 |
| Wet days | 16 | 14 | 12 | 11 | 10 | 9 | 9 | 10 | 11 | 16 | 18 | 18 |
| Sun h/day | 1.3 | 2.7 | 4.5 | 7.4 | 8.5 | 8.8 | 8.8 | 7.6 | 6.5 | 3.7 | 1.9 | 1.1 |
| Wind (km/h) | 33 | 32 | 28 | 23 | 22 | 20 | 20 | 21 | 24 | 28 | 32 | 33 |
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 | +0.5 | +0.8 | +0.5 | +0.4 | +0.4 | +0.8 | +0.7 | +1.2 | +0.8 | +0.2 | +0.2 | +0.5 |
| 2021 | +0.3 | +0.3 | +0.3 | −0.4 | −0.4 | +0.1 | −0.3 | −0.3 | +0.5 | +0.6 | +0.8 | +0.7 |
| 2022 | +0.8 | +1.0 | +1.1 | +0.8 | +1.2 | +0.6 | +0.9 | +0.9 | +1.0 | +0.7 | +1.0 | +0.7 |
| 2023 | +1.0 | +0.6 | +0.5 | +0.2 | +0.5 | +0.7 | +0.7 | +0.3 | +1.1 | +1.0 | +0.5 | +0.8 |
| 2024 | +0.9 | +1.2 | +1.4 | +1.2 | +1.1 | +0.9 | +0.7 | +0.7 | +0.2 | +0.7 | +1.0 | +0.6 |
| 2025 | +0.6 | +0.6 | +0.7 | +1.0 | +1.0 | +1.4 | +1.5 | +0.9 | +0.2 | +0.2 | +0.3 | +0.8 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
Guernsey
Guernsey63 km²110 m9 km away
SarkGuernsey5.3 km²114 m8 km away
AlderneyGuernsey8.1 km²90 m33 km away
Jersey
Jersey120 km²143 m36 km away
La MotteJersey0.01 km²8 m44 km away
Isle of Wight
United Kingdom380 km²241 m159 km away
Isle of PortlandUnited Kingdom12 km²149 m120 km away
Île de Batz
France3.1 km²14 m139 km awayAbout these numbers
| Names, area, population | Wikidata (Q202023) · 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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