Gavia Pass · Archive photograph · Idéfix at Dutch Wikipedia · CC BY-SA 3.0 · Wikimedia CommonsThe photograph does not show today’s road or snow conditions.
Source-check time and the date a status became valid are shown separately. A weather forecast cannot establish whether a road is open.
When to plan a crossing
Usually a late-spring or summer to autumn road, with winter closure. Snow clearance and early snowfall can shorten the season; the published road bulletin takes precedence over this indicative window.
Check restrictions for your own vehicle, both approaches and the return journey. A nearby tunnel may have different opening rules from the road over the pass.
Distances are approximate straight-line distances. They are not driving distances, and nearby places may lie across an inaccessible ridge or a border.
Geography and background: OpenStreetMap · Background & references. Mapped position and elevation may differ from road signs or the highest point of a nearby road.
Gavia Pass · map, access and webcams
Open the location map here, plan your route and view available webcams in the area.
Images and streams load when you choose “View here”. Check the provider’s timestamp: images may be old or offline. A nearby ski webcam does not necessarily show the road or pass.
Start with the 14-day weather forecast. Open the detailed tables to compare models, then explore hourly temperature, precipitation, wind and 850 hPa in the meteogram. Ensembles show the spread of possible outcomes; satellite images show observed clouds.
Available model families combine per variable. “Today” with hours in parentheses covers the stated window; subsequent days require full local coverage. Days 8–14 are less certain; missing
data remain blank. Snowfall cm are fresh snow, not snow depth. Sea-level pressure.
Terrain temperature downscaling by Open-Meteo; no Agios Stefanos calibration. A point
forecast cannot describe every piste or assess avalanche danger.
Open-Meteo
⛷ Weather map around the mountain pass
Forecasts at the resort and surrounding locations. Zoom or move the map and select a weather label.
The map loads as it approaches the screen.
Weather ensembles · Weather in Gavia Pass
850 hPa temperature, 2 m temperature and precipitation ensembles for Weather in Gavia Pass. GEFS, AIGEFS, ECMWF IFS ENS, AIFS ENS, GEM GEPS. Choose Open-Meteo or Direct. Auto tries Open-Meteo first, then Direct when unavailable. Direct retains the native time steps of each model; the displayed source and interval apply. Individual member availability varies by model and variable.
This summary uses the destination’s fixed coordinates and the historical service’s terrain elevation. It does not change with the forecast’s manual elevation setting. Mountain terrain, wind redistribution and snowmaking are not fully represented. Snowfall days do not indicate opening days or piste snow depth.
Explore rain and snowfall frequency, monthly average daily lows and highs, and daily
temperature extremes over the selected period.
The historical summary loads automatically…
Monthly weather history · choose a period and data source
Month
Mean low °C
Mean high °C
Precipitation mm/month
Rain days/month
Snowfall days/month
Choose 10, 20 or 30 years of temperature and precipitation history. The 100-year option searches for a nearby NOAA station with a sufficiently long record; the table shows the actual coverage. NASA POWER / MERRA-2 and ERA5 provide gridded historical estimates, while NOAA GHCNd contains station observations. These sources are shown separately, not combined into one time series.
A precipitation day has at least 1 mm of total precipitation. Where a source reports rain separately, the rain-day figure covers rain alone. A snowfall day has at least 0.1 cm of fresh snow where that variable is available; it does not establish snow cover on the ground. NASA POWER does not provide snowfall here. Blank values mean missing data, not zero. Averages and extremes use only the complete months or years stated in the table. These historical figures do not automatically calibrate the forecast.
Integrated Forecasting System: the intergovernmental European centre’s numerical model. IFS 9 km and IFS 0.25° are products of the same model family on different data grids.
Global Environmental Multiscale: the atmospheric model within Canada’s GDPS. The current system combines numerical prediction with large-scale guidance from the GEML AI model.
The blend uses the values available for each day and variable. Coverage falls as individual models reach their forecast limits. The two IFS products are not independent models. Model spread shows disagreement, not the probability of a weather event.
Wind: maximum daily speed at 10 m and prevailing direction of origin. Direction uses a speed-weighted circular calculation; missing or strongly opposing directions display a dash. 🥶: low below 0°C. 🥵: high above 30°C. 💨 in Conditions: wind at least 40 km/h or gusts at least 60 km/h.
The choice applies to widgets, maps and forecasts. Actual station readings stay unchanged. Automatic tries Open-Meteo first, then available direct sources if a supported request fails.
Open-Meteo
A data service supplying NOAA, ECMWF and ECCC forecasts. Available model names and grids are shown with each forecast.
NOAA / ECMWF / GEM
Direct GFS, AIGFS, IFS, AIFS and GEM/GDPS data from the Xionia cache when a complete recent cycle is available. Supported grids are GFS 0.25° / 0.5°, AIGFS 0.25°, IFS 0.25°, AIFS 0.25° and GEM 0.15°.
How models combine
Each available family contributes once per variable. Direct forecasts select the freshest available GFS grid and use equal family weights as the baseline. Local weights apply only where enabled after validation. The comparison shows actual percentages and model cycles.
Coverage and missing values
A dash means unavailable data. Wind and gust may use different models. AIGFS temperature is excluded when it cannot be compared on the same elevation basis. Six-hour precipitation is water equivalent, not snow depth.
Time window
A “Today” label with hours in parentheses covers only the stated time window; subsequent days require full local coverage. Days 8–14 are a less certain outlook. Agreement between models is not a probability from a true ensemble.
