Typical operating window
February–JuneMountain snow accumulates through winter; heli-ski programs concentrate on spring daylight and coastal access.Verified planning context
Snow, weather and avalanche context
Historical patterns help you compare trips. They do not predict your week or replace the operator's daily decisions.
Strongest comparable snow evidence
671 mm SWE median · 590–726 mm interquartile rangeIceland catalogue reference ERA5-Land grid cellTier C · modelled estimate · low confidenceSnow character
maritimeWind-affected surfaces are common. Sheltered snow can stay soft, while sun and warming create spring corn cycles.Public avalanche information
Icelandic Meteorological Office regional forecastSelect the correct forecast area and check issue and validity times. Guides make the local decision.Weather and flight context
North Atlantic lows bring rapid changes in wind, precipitation, temperature, and visibility.
- Fast frontal changes
- Strong ridge wind
- Sea fog and flat light
Meteorological reference area
Iceland regions outside the Troll Peninsula profile
- Includes
- Published Iceland trips that are not specifically assigned to Troll Peninsula.
- Excludes
- Troll Peninsula evidence, which belongs to destination 21.
- Elevation
- No verified operator-terrain elevation band is public. Each evidence value retains its site elevation.
Evidence pack
Measurements, claims and gaps stay separate.
Tier CModelled snowfall water equivalent671 mm SWE median · 590–726 mm interquartile range
- Site
- Iceland catalogue reference ERA5-Land grid cell · 65.0000, -19.0000 · 4.2 km from Iceland catalogue reference reference point
- Period
- Calendar years 1991–2020
- Completeness
- 360 monthly means; all 30 calendar years contain 12 values.
- Method
- ERA5-Land monthly mean daily snowfall accumulation was multiplied by calendar days and 1,000, then summed by calendar year.
- Limitation
- This reference area supports evidence discovery and comparison. It is not an operating-area or tenure boundary. This unadjusted 0.1° reanalysis grid cell is not an observation, snow depth, or terrain-wide total. Grid elevation and wind redistribution can cause substantial local bias.
- ERA5-Land monthly averaged data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-26
Monthly evidence
Each cell keeps its measurement type and unit. Reanalysis water equivalent is not snow depth. Text-only cells preserve a representative data gap.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 96.7 mm SWE | 92.8 mm SWE | 78.7 mm SWE | 58.2 mm SWE | 31.1 mm SWE | 8.1 mm SWE | 1.9 mm SWE | 3.2 mm SWE | 32.5 mm SWE | 66.1 mm SWE | 78.5 mm SWE | 81.4 mm SWE |
Commercial operator assessment
Operator assessment process not independently verifiedThe operator must assess current snow, avalanche terrain, weather, aircraft limits, and rescue options. No private operational plan is inferred.
Sources and evidence notes
- WMO Climatological NormalsWorld Meteorological Organization · accessed 2026-08-25
- ERA5-Land hourly data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-25
- Regional avalanche forecastIcelandic Meteorological Office · accessed 2026-08-25
- Published operator and trip inventoryHeliski International editorial team · accessed 2026-08-25
- ERA5-Land monthly averaged data from 1950 to presentCopernicus Climate Change Service · accessed 2026-08-26
- Heli-skiing programs in IcelandArctic Heli Skiing · accessed 2026-08-25
- World Weather Information ServiceWorld Meteorological Organization · accessed 2026-08-25