Current Weather
Raw METAR
Clouds - Visual Profile
Weather Briefing
VFRSion Airport is currently reporting visual flight rules (VFR) conditions with overcast skies at 5,500 feet and 10 miles or greater visibility.
Wind Analysis
Winds are from the west-southwest (250°) at 6 knots. Runway 25 is favored with a 6-knot headwind and 0-knot crosswind component.
Visibility & Ceiling
Visibility is unrestricted. The ceiling is 5500 feet AGL (overcast), well above standard VFR minimums.
Temperature & Moisture
Temperature is 7°C (45°F) with a dewpoint of 5°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.
Forecast Outlook
The TAF forecast covers the next 9 hours. Conditions are expected to remain VFR throughout the forecast period. Expected weather includes: Showers Rain. There is a 30% probability of VFR conditions with Showers Rain between 06:00Z and 13:00Z.
Pilot Recommendations
Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours.
This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.
Forecast (TAF)
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Airport Runway Layout
Runway Information
| Runway | Length | Width | Surface | Heading | Wind Component |
|---|---|---|---|---|---|
|
✈️ 07/25
Active: 25
|
6,562 ft | 131 ft | ASPH | 73° |
↑ 6.0 kt
•
↔ 0.0 kt
0° angle
|
|
✈️ 07L/25R
Active: 25R
|
1,837 ft | 98 ft | GRS | 73° |
↑ 6.0 kt
•
↔ 0.0 kt
0° angle
|
|
✈️ 07R/25L
Active: 25L
|
6,562 ft | 131 ft | ASP | 73° |
↑ 6.0 kt
•
↔ 0.0 kt
0° angle
|
Weather Statistics - LSGS
11,050 observations | Sep 2025 - May 2026Flight Rules Distribution
Sion Airport enjoys predominantly VFR conditions, with visual flight rules prevailing 93.7% of the time. Prevailing winds are from the E averaging 6 knots. Temperature extremes range from -11°C to 29°C, reflecting significant seasonal variation. The best months for VFR flying are April, March, May.
Wind Analysis
Temperature Range
Visibility
Best Months for VFR
Runway Wind Analysis
Statistics computed from 11,050 METAR observations (Sep 2025 - May 2026). Data sourced from official aviation weather services. Updated daily.
Sion Airport - Airport Information
Airport Details
Location
Runway Information
Flight Planning Tools
Nearby Airports
About Sion Airport
Overview
Sion Airport serves the Canton of Valais in Switzerland, situated in the alpine region at an elevation of 1,582 feet MSL. The airport features three runways, with two primary asphalt runways (07/25 and 07R/25L) measuring 6,562 feet each, and a grass runway (07L/25R) of 1,837 feet, supporting various aviation operations in this mountainous terrain.
Flying Conditions
Weather conditions at Sion Airport are predominantly favorable for visual flight, with 91.9% of observations showing VFR conditions. The airport experiences a wide temperature range from -11°C to 29°C, with an average of 6.4°C. Wind patterns are consistently from the east at an average of 5.4 knots, with maximum gusts reaching 24 knots, providing stable flying conditions for most aircraft operations.
Notable Features
The airport's alpine location presents unique geographical challenges, with surrounding mountainous terrain influencing local weather patterns. All three runways demonstrate excellent wind alignment, showing 100% favorable wind conditions and minimal average crosswind of 1.1 knots. September, January, and October are statistically the most consistent months for visual flight operations.
Approach Considerations
Pilots should expect excellent visibility averaging 10 statute miles, with minimal occurrences of reduced visibility (fog present in only 0.3% of observations). The consistent east wind and multiple runway options provide flexibility in approach and departure procedures, with low likelihood of wind-related operational constraints.
Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.
Learn More
Recommended guides based on current conditions at LSGS
Official Data Sources
Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.