Mount Olympus (NZ) 7-Day Snow Forecast

Mount Olympus (NZ) Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 21 September 2026 19:40 NZST

Long-Range Snow Forecast for Mount Olympus (NZ)

Long-range (14 to 45 days) from 21 September.

For Forecast detail, see below.

Mount Olympus (NZ) Snow Forecast Highlights

When will there be fresh snow in Mount Olympus (NZ)?

Mount Olympus (NZ) Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (1,655m)
Next Snow Expected	23 September
Next Snow Amount	2cm
Next 48 Hours	2cm
Next 7 Days	10cm

Long-range Snow Outlook for Mount Olympus (NZ)

Snowfall

Snow Line

Max 5℃
Min -5℃

12cm New Snow

Snow Line from 1,645m to resort level (1,430m).

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Mount Olympus (NZ) Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Mount Olympus (NZ) from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Mon 21	Clear spells.	Max 5℃ Min 2℃
Tue 22	up to 1cm New Snow Clear spells. Snow falling to resort level (1,430m).	Max 5℃ Min 0℃
Wed 23	2cm New Snow Light snow showers. Snow Line from 1,630m to resort level (1,430m).	Max 3℃ Min -5℃
Thu 24	Fair.	Max 3℃ Min -5℃
Fri 25	up to 1cm New Snow Light snow. Snow Line from 1,645m to resort level (1,430m).	Max 5℃ Min -1℃
Sat 26	up to 1cm New Snow Cloudy. Snow Line from 1,615m to resort level (1,430m).	Max 5℃ Min -1℃
Sun 27	4cm to 7cm New Snow Light snow showers. Snow Line from 1,645m to resort level (1,430m).	Max 3℃ Min -3℃

This Snow Forecast for Mount Olympus (NZ), New Zealand gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Mount Olympus (NZ), on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Mount Olympus (NZ) Snow Forecast updated at 19:40 NZST, next update expected 01:00 NZST.

Ensemble forecast for Mount Olympus (NZ), New Zealand at 1,430m

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

New Zealand Accommodation (Apartments, Chalets, Hotels) Map

Snow Reliability

Mount Olympus typically enjoys reliable snow conditions, with an average seasonal snowfall of around 300 cm. Snow depths can vary, so check J2Ski for the latest updates on snow conditions and forecasts.

Off-Piste Safety in Mount Olympus (NZ)

Before skiing or snowboarding off-piste in Mount Olympus (NZ), you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.