Volcano·
South Georgia and the South Sandwich Islands / United Kingdom
1,005m
3D view drawn from Copernicus WorldDEM-30 (© DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA) and Sentinel-2 cloudless 2016 by EOX IT Services GmbH, CC BY 4.0
Mountain in South Sandwich Islands
Mount Hodson is a volcano in South Georgia and the South Sandwich Islands. Its summit stands 1,005 m above sea level. Its prominence — how far it rises above the highest saddle linking it to a taller summit — is 1,005 m.
Scores
Two scores out of 10, built only from open data — every part is shown. They describe what the mountain offers, not how safe it is.
Hiking & mountaineering
2.1/10
Ski score
—
No ski runs within 12 km in OpenStreetMap.
Ski (where OpenStreetMap has skiing within 12 km): up to 4 points for the length of downhill runs (300 km or more = 4), 1.5 for the number of lifts (40+), 1.5 for the vertical between lift stations (1,500 m) and 3 for the snow season — a month counts when the estimated mean temperature at the height of the ski area is −1 °C or lower and snow falls or lies there (NASA POWER, 2001–2020). Hiking & mountaineering: up to 2.5 for waymarked routes and paths, 1.5 for huts, 2 for the ascent from the valley (2,000 m), 1.5 for prominence (3,000 m), 1.5 for the season (months with summit afternoons above −5 °C) and 1 for via ferratas, climbing and glaciers. OpenStreetMap is built by volunteers: where few things are mapped, a score can be lower than reality.
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Snow
At the summit, snow all year round. Month by month below, at different heights on the way up.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Summit1,005 msnow all year round | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month | Snow on the ground all month |
Estimate for a normal year: average temperature and precipitation from NASA POWER, carried to each height, in a simple model of snow building up and melting. In a given year snow can come earlier or stay longer. It does not replace the local snow and avalanche bulletin.
Summit weather
Not a forecast: long-term averages (1991–2020), carried up to the summit. The orange line is where an average afternoon reaches 0 °C; above the dashed blue line it freezes even at dawn.
On an average February afternoon the summit reaches about -5 °C; on August nights it falls to about -14 °C. Even in the warmest month the summit stays below freezing all day: ice and snow all year round. Even at its highest, in February, the 0 °C line reaches only about 250 m: 755 m below the summit. Across the region, September is the driest month (66 mm) and March the wettest (106 mm).
| Month | Summit high °C | Summit low °C | 0 °C line (m) | Rain & snow (mm) | Wet days | Sun h/day |
|---|---|---|---|---|---|---|
| January | -5 | -6 | 170 | 86 | 19 | 4.1 |
| February | -5 | -6 | 250 | 88 | 20 | 3.4 |
| March | -5 | -6 | 230 | 106 | 22 | 2.0 |
| April | -6 | -7 | 110 | 94 | 21 | 1.2 |
| May | -7 | -9 | -80 | 74 | 20 | 0.6 |
| June | -8 | -10 | -210 | 77 | 20 | 0.2 |
| July | -9 | -13 | -380 | 78 | 21 | 0.9 |
| August | -10 | -14 | -480 | 92 | 21 | 2.2 |
| September | -9 | -12 | -320 | 66 | 18 | 3.7 |
| October | -8 | -10 | -180 | 76 | 20 | 4.3 |
| November | -7 | -8 | -60 | 71 | 19 | 4.4 |
| December | -6 | -7 | 50 | 81 | 19 | 4.9 |
Estimate: the NASA POWER climate of a ~55 km cell (average height 1 m), adjusted to the summit by −6.5 °C per 1,000 m. Rain, wet days and sunshine are those of the region. Mountain weather changes fast — always check a local forecast. ★ = mildest months at the top.
Around the mountain
Counted around the summit in OpenStreetMap, the map anyone can edit. The satellite plate shows 14 × 14 km.
OpenStreetMap is built by volunteers: a low number may just mean nobody has mapped it yet. Places © OpenStreetMap contributors (ODbL).
Recent years
Afternoon high at the summit (estimate). The first row is the reference, the 1991–2020 average in °C; the years show only the difference.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1991–2020 average | -5 | -5 | -5 | -6 | -7 | -8 | -9 | -10 | -9 | -8 | -7 | -6 |
| 2020 | +0.4 | +0.6 | +0.4 | −0.1 | −0.8 | −0.2 | −4.5 | −0.2 | −2.0 | −0.7 | +0.1 | ±0.0 |
| 2021 | ±0.0 | ±0.0 | +0.1 | +0.3 | +0.3 | −0.2 | −1.3 | +1.0 | +1.0 | +0.7 | +0.4 | +0.7 |
| 2022 | ±0.0 | +0.5 | +0.8 | +1.1 | +0.8 | +0.6 | +1.2 | +1.2 | +1.2 | +0.8 | +0.6 | +0.6 |
| 2023 | +0.4 | +0.4 | +0.4 | +0.4 | +0.9 | +1.3 | +1.4 | +1.1 | −0.5 | +1.0 | +0.6 | +0.4 |
| 2024 | +0.1 | +0.1 | −0.1 | +0.9 | +0.5 | −0.5 | −1.6 | −4.8 | +1.6 | −0.1 | −0.1 | −0.2 |
| 2025 | −0.3 | −0.2 | −0.2 | −0.3 | ±0.0 | −0.1 | +0.9 | −0.2 | −0.1 | −0.1 | −0.1 | −0.4 |
+1 warmer than usual −1 cooler than usual
| Names, elevation, prominence | Wikidata (Q6921213) · CC0 |
|---|---|
| Relief, 3D view, profiles | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Climate | NASA POWER, 1991–2020 · CC BY 4.0 |
| Around the mountain | © OpenStreetMap contributors · ODbL |
| 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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