Wellington International Airport turbulence forecast
Wellington, New Zealand
WLG (Wellington, New Zealand) sits at 41.33°S, 174.80°E, 41 ft elevation — coastal with the Southern Alps nearby.
About WLG
Major airport serving Wellington, New Zealand.
- Climate
- Mid-latitude maritime — variable, wind-driven weather
- Nearby terrain
- Southern Alps
- Geography
- Coastal — marine-influenced airmass
What to expect on departures
Computed from WLG's geography and climate
Wellington sits squarely under the mid-latitude jet, south of which most long-haul corridors run. Clear-air turbulence (CAT) at cruise is the most common source of bumps on departures from here, especially during June–August when the jet is at its strongest. The Southern Alps sit upwind of WLG on prevailing flow days, generating mountain-wave turbulence that can extend several hundred kilometres downwind at cruise level. The lee-wave risk is highest when June–August winds at FL300 cross the Southern Alps at near-perpendicular angles. Warm-season convection (December–February) drives the dominant turbulence pattern from WLG — afternoon thunderstorm cells are routed around but their wake turbulence and gust fronts can still affect arrivals and departures. WLG's coastal position means departures often transit from the cool marine boundary layer into warmer continental air within minutes of takeoff — a brief but reliable bumpy transition on warm-season afternoons when the sea breeze is set up.
Climbout notes
Standard Instrument Departures (SIDs) often route around terrain; on strong-wind days, low-level turbulence in the lee of the hills is common in the first few thousand feet.
Seasonal pattern
Southern Hemisphere winter (June–August) is when the subtropical jet strengthens, and that's when long-haul CAT is most likely. Southern summer (December–February) is the main convective window. Mountain-wave activity near the Southern Alps peaks in the cold season when upper-level winds blow hardest across the range.
- Peak turbulence
- June–August (Southern Hemisphere winter jet)
- Typically calmest
- November–February
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Popular routes from WLG
WLG turbulence FAQ
Is turbulence common on flights from WLG?
Wellington International Airport is best described as a jet-stream + mountain-wave corridor. Wellington sits squarely under the mid-latitude jet, south of which most long-haul corridors run.
When is turbulence worst for Wellington flights?
Southern Hemisphere winter (June–August) is when the subtropical jet strengthens, and that's when long-haul CAT is most likely. Peak turbulence window: June–August (Southern Hemisphere winter jet). Typically calmest: November–February.
Does the terrain around Wellington affect turbulence?
Yes — the Southern Alps lie close enough to generate mountain-wave turbulence on days with strong upper-level winds. These waves can propagate hundreds of kilometres downwind, so they sometimes affect cruise even after you've left the immediate area.
How accurate are Turbcast forecasts?
We combine live NOAA Aviation Weather Center data (PIREPs, SIGMETs, AIRMETs) with physics-based Ellrod and Richardson-number calculations derived from Open-Meteo pressure-level wind and temperature data. If a source is unavailable for a waypoint we show an em dash rather than invent a number.
Articles
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