Typical operating window
March–early JuneSnow persists through winter; published commercial access can begin in March and extend into early June.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
928 mm SWE median · 852–1,095 mm interquartile rangeEast Greenland catalogue location ERA5-Land grid cellTier C · modelled estimate · low confidenceSnow character
polarCold polar snow is common inland. Coastal wind, salt-laden air, and sun can change exposed surfaces quickly.Public avalanche information
No verified public regional avalanche bulletinThe operator must use a site-specific professional assessment. Public weather is context only.Weather and flight context
Long-lived snow cover meets rapidly changing maritime weather along the coast.
- Coastal fog and low cloud
- Katabatic and terrain-channelled wind
- Flat light over glaciers
Meteorological reference area
Greenland catalogue fjord systems
- Includes
- Published east- and west-coast expedition locations, assessed separately.
- Excludes
- The Greenland ice sheet as one representative climate area.
- 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 equivalent — East Greenland catalogue location928 mm SWE median · 852–1,095 mm interquartile range
- Site
- East Greenland catalogue location ERA5-Land grid cell · 65.7000, -37.1000 · 15.2 km from East Greenland catalogue location 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
Tier CModelled snowfall water equivalent — West Greenland catalogue location595 mm SWE median · 517–689 mm interquartile range
- Site
- West Greenland catalogue location ERA5-Land grid cell · 65.9000, -53.2000 · 10.6 km from West Greenland catalogue location 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 140.9 mm SWE | 132.3 mm SWE | 109.1 mm SWE | 86.3 mm SWE | 50 mm SWE | 1.9 mm SWE | 0 mm SWE | 0.2 mm SWE | 33.3 mm SWE | 60 mm SWE | 120.7 mm SWE | 131.3 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
- Greenland weatherDanish Meteorological Institute · 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
- Heliskiing season in GreenlandAir Greenland · accessed 2026-08-25