Photo: Roger McLassus · CC BY-SA 3.0 · Wikimedia Commons
GrímsvötnReport this photo · linked, not stored
GrímsvötnReport this photo · linked, not stored
Photo: TommyBee · Public domain · Wikimedia Commons
ThordarhyrnaReport this photo · linked, not stored
ThordarhyrnaThordarhyrnaReport this photo · linked, not stored
IcelandSummit weather, forecast and climate
Grímsvötn
Caldera · last major eruption 19961,725 mSnow likely Jan–Dec
Elevation1,725 mabove sea level
Prominence–independent height
Isolation26 kmto a higher summit
Summit, Jul2°average high
64.42° N, 17.33° WElevation 1,725 mUTC+0 · Coordinated Universal Time
From the valley to the top
- Summit1,725 m
- Mid-mountain1,130 m
- Valley525 m
Freezing level in October: 950 m
iThe mountain
Grímsvötn in brief
Grímsvötn rises to 1,725 m, Iceland.
At the summit, July is the mildest month with average highs of 2°, while nights stay below freezing all year. Daytime highs climb above zero from June to August.
Facts
- Elevation
- 1,725 m · 5,659 ft
- Country
- Iceland
- Coordinates
- 64.4200, -17.3300
- Nearest airport
- Hornafjörður Airport (HFN) · 102 km
iiForecast
Weather at three heights
Temperatures are adjusted to each height; summits are usually colder and windier than the valley forecast suggests.
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iiiSummit climate
The top of Grímsvötn by month
Summit temperatures and precipitation
Climate normals for the summit area (~1 km grid), station-adjusted| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | -7° | -7° | -7° | -5° | -2° | 1° | 2° | 2° | 0° | -3° | -5° | -6° |
| Average low | -11° | -12° | -12° | -9° | -5° | -2° | 0° | -1° | -3° | -7° | -9° | -11° |
| Precipitation | 273 mm | 240 mm | 223 mm | 178 mm | 139 mm | 128 mm | 141 mm | 196 mm | 248 mm | 266 mm | 238 mm | 286 mm |
| Cloud cover | 64% | 62% | 64% | 58% | 53% | 54% | 59% | 61% | 64% | 63% | 62% | 64% |
| Daylight | 5h 16 | 8h 33 | 11h 39 | 15h 05 | 18h 28 | 21h 16 | 19h 55 | 16h 32 | 13h 07 | 9h 51 | 6h 29 | 4h 04 |
| Month score | 11 | 12 | 11 | 13 | 15 | 15 | 13 | 12 | 11 | 11 | 12 | 11 |
Snow and freezing level
Average height of the 0 °C level from the summit normals (6.5 °C per km); snow months have a summit mean at or below +1 °C| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Freezing level | 300 m | 250 m | 300 m | 600 m | 1,150 m | 1,650 m | 1,850 m | 1,800 m | 1,450 m | 950 m | 650 m | 400 m |
| Summit | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow | ❄ snow |
ivTerrain
Grímsvötn in 3D
vNeighbours
Mountains of IcelandPeaks nearby
| Mountain | Elevation | Prominence | Distance | July summit high |
|---|---|---|---|---|
| Thordarhyrna | 1,650 m | – | 19 km SW | 1° |