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Roundhill ski resort
Tier E — Deep timing play — aim late winter

Oceania

Roundhill Snow Forecast

Closed for the season

Best months to book: July, August, September · last season + 30-yr record

Not operating today

Weather data is still collected for informational purposes.

Last Snowfall

Sep 23

Past 24 Hours

0cm

Resort reported

Past 48 Hours

1cm

Past 10 Days

6cm

7-Day Forecast

18cm

Snow Depth

--

🎿

Powder Days

29

2026 season

☀️

Bluebird Days

6

2026 season

Updated: Sep 22, 5:05 PM•Weather at base: 1,350m
SnowSure™ ScoreAI
Not operating today

Roundhill is closed for the season. Here is when it is usually best to book.

Best months to book: July, August, September. Best weeks: 4 Jul–10 Jul, 22 Aug–28 Aug, 11 Jul–17 Jul.Jun1Jul2Aug3SepOpens 27 JunCloses 27 Sep

July

#1 to book

60cm avg · scored 37.2

August

#2 to book

49cm avg · scored 31.4

September

#3 to book

43cm avg · scored 34

Best weeks to book

  1. #14 Jul – 10 Julscored 47.3
  2. #222 Aug – 28 Augscored 34.9
  3. #311 Jul – 17 Julscored 38.7

Ranked on 25% last season's SnowSure score (2026) · 75% 30-year snowfall and base-depth record. The live score returns when the lifts turn.

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Depth

Resort closed — no current ski-base depth.

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Recent

There was 1cm of snowfall in the last 48 hours and 5cm over the past week.

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Forecast

18cm in the next 7 days.

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Historic

So far this season, snow accumulation is at 75% of the 5-year average for this date.

Not operating today · Data updated Tue, Sep 22, 05:05 PM UTC · informational only

Snow Summary

2,133m
ECMWFGFSGEMJMAICONMétéo-Fr

Updated Sep 22, 2026 at 5:05 PM

6cm
24h
18cm
Past 10d
7-Day Forecast
6
Prev10d
—
Now22
0
W23
—
T24
1
F25
0
S26
16
S27
—
M28
Days 8–14 and every model are in Pro.Unlock with Pro
Past
Today
Forecast

Hourly Forecast

23 Wed
-7° / -15°
24 Thu
-3° / -17°
25 Fri
-3° / -10°
26 Sat
-1° / -7°
27 Sun
-4° / -15°
28 Mon
-5° / -15°
29 Tue
-5° / -10°
Days 8–14 and every model are in SnowSure Pro.Unlock with Pro
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight30 Wed1 Thu2 Fri3 Sat4 Sun5 Mon6 Tue
Conditions☁️❄️⛅🌤️☀️☀️☁️🌤️☁️☀️⛅☁️❄️☀️❄️☀️☀️🌤️🌤️⛅🌤️
cloudylight snowsome cloudsmostly clearclearclearcloudymostly clearcloudyclearsome cloudscloudyheavy snowclearheavy snowclearclearmostly clearmostly clearsome cloudsmostly clear
Summit2,133 mModeled
Temp°C-12°-7°-11°-11°-4°-12°-7°-3°-8°-4°-2°-6°-9°-9°-10°-10°-5°-11°-7°-5°-8°
Feels like°C-16°-11°-15°-15°-7°-16°-10°-6°-12°-8°-4°-9°-14°-13°-14°-14°-8°-15°-11°-7°-11°
Snowcm0.10.3·······0.1·1.15.30.114.7······
Precipmm0.20.4·······0.1·1.67.50.121.0······
Windkm/h4844543347661086555444
Mid-mountain1,742 mModeled
Temp°C-9°-5°-9°-9°-1°-9°-4°0°-6°-1°1°-3°-7°-7°-7°-8°-2°-9°-5°-2°-5°
Feels like°C-13°-8°-13°-12°-4°-13°-8°-3°-9°-5°-1°-7°-11°-10°-11°-11°-5°-13°-8°-4°-9°
Snowcm0.10.3·······0.1·1.15.30.114.7······
Precipmm0.20.4·······0.1·1.67.50.121.0······
Windkm/h4844543347661086555444
Base1,350 mModeled
Temp°C-7°-2°-6°-6°1°-7°-2°2°-3°1°3°-1°-4°-4°-5°-5°0°-6°-2°0°-3°
Feels like°C-10°-5°-10°-10°-1°-10°-5°0°-6°-2°2°-4°-8°-7°-8°-9°-2°-10°-5°-1°-6°
Snowcm0.10.3·······0.1·15.30.114.6······
Precipmm0.20.4·······0.1·1.67.50.121.0······
Windkm/h4844543347661086555444
Humidity%886986796490918596919398958995678380959898
0°C linem—————————————————————
Sunhours

Freeze line is the height where rain turns to snow. Plain: straight from the models. Marked ○: estimated from temperature. Sun is hours of actual sunshine, not day length; blank means we have no reading.

Forecast Range · SnowSure Pro

Every model for Roundhill, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here. Free for 14 days, then yearly.

Unlock with Pro

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Roundhill (southern alps), we combine seven global weather models using weights learned from daily forecast verification — comparing each model's prediction to measured snowfall (SNOTEL, resort reports, ERA5).

  • 1.Horizon buckets: days 1–3, 4–7, and 8–14 each get separate weights — short-range skill differs from long-range.
  • 2.Regional calibration: weights come from verified error in this geography (Rockies, Alps, Japan, etc.), recalculated weekly.
  • 3.Ground truth only: we never grade a forecast against another model — only against measured snow.

Building verification history for this resort.

How we verify forecasts →

Snowfall Forecast Maps

New Zealand region

El Niño Outlook · Winter 2026

Roundhill El Niño rank & forecast

Roundhill ranks #383 of 488 SnowSure resorts — Tier E, −12% in strong El Niño winters.

Tier E — Deep timing play — aim late winter: Strong El Niño winters ran clearly below this resort’s own baseline (≤ −8%). Still skiable — schedule late season; one storm cycle can beat the climatology.

#383 of 488Tier E — Deep timing play — aim late winter

Strong-event signal: −12% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Roundhill averaged -12% versus its own 30-year snowfall baseline. Historically this is a timing play rather than a reason to stay home: aim for late winter (February–March) in winter 2026. Analog winters: '97-98 -28%, '15-16 -14%, '23-24 +7%. A pattern, not a promise.

'97-98 −28%'15-16 −14%'23-24 +7%

In-season scorecard

Predicted signal

−12%

Measured to date

+16%

Season total

214 cm

Vs predicted

+28%

Predicted signal vs measured season-to-date against this resort's own climatology.

Signal = average snowfall in the three strongest El Niño winters since 1996 ('97-98, '15-16, '23-24) vs this resort's own 30-year ERA5 baseline. n=3 — a lean, not a law. Updated monthly against measured snowfall Dec–Mar.

Full El Niño report →

ENSO seasonal analog

History · not a forecast

In 6 past El Niño winters at Roundhill, ERA5 season snowfall median was 199 cm (78 in), about 16% below this resort’s long-term median. This is a historical analog from reanalysis — not a prediction of this winter’s storm track.

Prevailing ONI

El Niño

JJA 2026 · ANOM +1.8°C

Analog season median

199cm

6 El Niño winters · 16% below median

All-season median

237cm

Across 31 ERA5 seasons (2026)

PhaseSeasonsMedianp25–p75Recent analogs
El Niñocurrent6199cm187cm – 218cm2026, 2023, 2015, 2009, 2002, 1997
La Niña4213cm195cm – 288cm2022, 2010, 1999, 1998
ENSO-neutral21260cm212cm – 295cm2025, 2024, 2021, 2020, 2019, 2018

Season snowfall from Open-Meteo ERA5 reanalysis (~9 km). ENSO phase from NOAA CPC Oceanic Niño Index. Relative phase differences are more trustworthy than absolute cm totals. Source: NOAA CPC Oceanic Niño Index + Open-Meteo ERA5 via SnowSure season archive.

Local Reports

0 reports

How accurate is this forecast?

We verify every forecast against what actually fell — see the model-by-model results.

→

Frequently asked questions about Roundhill

How much snow is Roundhill getting this week?
The SnowSure™ blend forecasts about 18 cm (7 in) of snow at Roundhill over the next 7 days.
What is the 14-day snow forecast for Roundhill?
The full 14-day forecast for Roundhill — the SnowSure™ blend and every model we track, day by day — is part of SnowSure Pro. The first 7 days are free on this page.
How accurate are SnowSure forecasts for Roundhill?
We verify every forecast against what actually fell and publish the results — see our forecast verification pages for model-by-model accuracy, updated continuously.