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Antillanca ski resort
Tier B — Favored

South America

Antillanca Snow Forecast

51

Excellent · 2026 season average

Projected to open June 2027 · average of 96 verified open days

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

Projected to open Jun 2027 — closed September 30

Weather data is still collected for informational purposes.

Last Snowfall

Oct 9

7d ago

Past 24 Hours

0cm

Resort reported

Past 48 Hours

0cm

Past 10 Days

0cm

7-Day Forecast

1cm

Snow Depth

--

🎿

Powder Days

44

2026 season

☀️

Bluebird Days

3

2026 season

Updated: Oct 16, 5:00 AM•Weather at base: 1,040m
SnowSure™ Score2026 season
51

Excellent

2026 season average

Antillanca is projected to open June 2027. Last season it averaged 51.2 across 96 verified open days.

Best months to book: August, July, September. Best weeks: 8 Aug–14 Aug, 1 Aug–7 Aug, 22 Aug–28 Aug.Jun2Jul1Aug3SepOpened 27 JunClosed 30 Sep

Best months to book

  1. #1August119cm avg · last season 65.3
  2. #2July105cm avg · last season 38.9
  3. #3September70cm avg · last season 52.4

Best weeks to book

  1. #1 8 Aug – 14 Aug · last season 73.9
  2. #2 1 Aug – 7 Aug · last season 65.9
  3. #3 22 Aug – 28 Aug · last season 61.7

Ranked on 25% last season's SnowSure score (2026) · 75% 30-year snowfall and base-depth record. Last season's strongest fortnight was 2 Aug – 15 Aug. One season describes what happened, not what to expect. The live score returns when the lifts turn.

Snow Summary

Updated Oct 16 at 5:00 AM

954cm
Season
12cm
Past 10 days
0cm
48h
0cm
24h
0cm
Today
1cm
Next 6 days
Days 8–14 · Pro
11
0
0
Seasontotal
Wed14
Thu15
14 daystotal
—
—
—
—
—
1
1
—
—
—
—
—
—
—
SunOct 4
Mon5
Tue6
Wed7
Thu8
Fri9
Sat10
Sun11
Mon12
Tue13
TODAY16
Sat17
Sun18
Mon19
Tue20
Wed21
Thu22
Fri23
Sat24
Sun25
Mon26
Tue27
Wed28
Thu29
Freezing line

Days 8–14 and every model are in SnowSure Pro.Unlock with Pro

Hourly Forecast

16 Fri
14° / 3°
17 Sat
10° / 2°
18 Sun
11° / -1°
19 Mon
9° / 1°
20 Tue
6° / 1°
21 Wed
6° / -1°
22 Thu
10° / 2°
Days 8–14 and every model are in SnowSure Pro.Unlock with Pro
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight23 Fri24 Sat25 Sun26 Mon27 Tue28 Wed29 Thu
Conditions🌤️☀️☀️🌧️🌧️🌧️⛅🌧️☁️☁️🌧️⛅🌧️🌧️⛅☁️🌧️☁️⛅☁️⛅
mostly clearclearclearlight drizzlelight raindrizzlesome cloudslight drizzlecloudycloudyheavy drizzlesome cloudslight drizzlelight drizzlesome cloudscloudydrizzlecloudysome cloudscloudysome clouds
Summit1,540 mModeled
Temp°C5°12°6°5°10°5°4°11°5°6°10°5°4°7°4°3°6°3°3°7°2°
Feels like°C1°11°1°2°8°1°0°9°0°3°6°0°2°3°1°-1°4°-2°1°6°0°
Snowcm···············0.3·0.10.1·0.4
Precipmm···0.64.42.7·0.20.20.13.24.31.23.15.22.42.33.10.31.71.3
Windkm/h171213938966726272537161512
Mid-mountain1,290 mModeled
Temp°C7°14°8°7°11°7°6°13°6°7°12°6°6°9°6°5°7°5°5°9°4°
Feels like°C3°12°3°4°10°3°2°11°2°5°8°2°4°5°3°1°6°0°3°8°2°
Snowcm····················0.3
Precipmm···0.64.12.5·0.10.20.12.94.01.12.94.82.22.12.80.31.51.2
Windkm/h171213938966726272537161512
Base1,040 mModeled
Temp°C9°15°9°8°13°8°8°15°8°9°13°8°8°11°7°7°9°6°7°10°6°
Feels like°C5°14°5°6°12°5°4°13°4°7°10°4°6°7°5°3°8°2°5°10°3°
Snowcm·····················
Precipmm···0.53.82.4·0.10.20.12.73.71.02.74.52.12.02.60.31.41.1
Windkm/h171213938966726272537161512
Humidity%673866747985896691788990979093808486685172
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 Antillanca, side by side for 14 days

Where the models agree, where they split, and which one has been most accurate here.

Unlock with Pro

SnowSure™ blend — verified model weighting

The black line is not a simple average. For Antillanca (andes), 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

Andes (Chile & Argentina) region

14 Day map is in SnowSure ProUnlock with Pro

El Niño Outlook · Winter 2026

Antillanca El Niño rank & forecast

Antillanca ranks #116 of 488 SnowSure resorts — Tier B, +7% in strong El Niño winters.

Tier B — Favored: Modest El Niño upside (+3% to +8% vs normal). Often a solid pick, without the biggest Andes-style swings.

#116 of 488Tier B — Favored

Strong-event signal: +7% vs this resort's 30-yr avg

In the three strongest El Niño winters on record ('97-98, '15-16, '23-24), Antillanca averaged +7% versus its own 30-year snowfall baseline. The pattern has historically leaned mildly in this resort's favor for winter 2026. Analog winters: '97-98 -38%, '15-16 -28%, '23-24 +88%. A pattern, not a promise.

'97-98 −39%'15-16 −28%'23-24 +88%

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 Antillanca, ERA5 season snowfall median was 350 cm (138 in), about 2% above 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

350cm

6 El Niño winters · 2% above median

All-season median

345cm

Across 31 ERA5 seasons (2026)

PhaseSeasonsMedianp25–p75Recent analogs
El Niñocurrent6350cm328cm – 539cm2026, 2023, 2015, 2009, 2002, 1997
La Niña4301cm246cm – 451cm2022, 2010, 1999, 1998
ENSO-neutral21348cm272cm – 619cm2025, 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 Antillanca

How much snow is Antillanca getting this week?
The SnowSure™ blend forecasts about 1 cm (0 in) of snow at Antillanca over the next 7 days.
What is the 14-day snow forecast for Antillanca?
The full 14-day forecast for Antillanca — 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 Antillanca?
We verify every forecast against what actually fell and publish the results — see our forecast verification pages for model-by-model accuracy, updated continuously.