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Southern Alps

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Southern Alps Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Southern Alps year round climate

  • Spring (March–May): Average 45–62°F, mild climate but relatively high rainfall, especially in April. Common activities: Hiking (be aware of changing weather), flower viewing (some alpine plants). Recommended clothing: Warm jacket, waterproof jacket, breathable trousers, hiking boots.
  • Summer (June–August): Average 69–78°F, hot and humid, with the most rainfall in June. Be aware of afternoon thunderstorms in mountainous areas. Common activities: Hiking (prepare for sun protection and rain), activities by the stream. Recommended clothing: Light and breathable clothing, sun protection clothing, raincoat, hiking boots.
  • Autumn (September–November): Average 50–75°F, comfortable climate, but with a large temperature difference between morning and evening. Common activities: Hiking, maple leaf viewing (in some areas). Recommended clothing: Warm jacket, long-sleeved clothing, comfortable and breathable trousers, hiking boots.
  • Winter (December–February): Average 34–38°F, cold and dry, with snow in some areas. Common activities: Skiing (confirm snow conditions), enjoying snow scenery. Recommended clothing: Heavy warm jacket, hat, gloves, scarf, waterproof and windproof trousers, thermal underwear, snow boots.

Southern Alps climatological average

Annual average temperature: approx. 56.5°F / Annual rainfall: approx. 1944 mm / Summer humidity: 70%–80% / Rainiest month: June

Southern Alps monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
34.2°F
37.9
February
36.9°F
117.1
March
45.7°F
172.5
April
57°F
205.2
May
62.4°F
246.9
June
69.6°F
313.5
July
77.9°F
189.8
August
78.1°F
172.9
September
75°F
179.1
October
59.7°F
135.9
November
50°F
126
December
38.3°F
48.1

Southern Alps weather for the next seven days

12/28
Sunday
Sunny
45.9°F/18.8°F
12/29
Monday
Sunny
46.6°F/19°F
12/30
Tuesday
Patchy rain nearby
46.8°F/23°F
12/31
Wednesday
Patchy rain nearby
40.7°F/18.1°F
1/1
Thursday
Sunny
38.1°F/16.3°F
1/2
Friday
Moderate snow
34.5°F/13.7°F
1/3
Saturday
Patchy moderate snow
32.6°F/12.8°F

Southern Alps Frequently Asked Questions and Useful Information for Travel

Where are the Southern Alps?

The Southern Alps, known as Kā Tiritiri o te Moana, are a majestic mountain range located on the South Island of New Zealand. This impressive range holds the distinction of being the highest mountain range in Australasia.

Why is the Southern Alps famous?

The Southern Alps are celebrated for their dramatic and wild beauty, featuring extensive wilderness areas. It is home to Aoraki / Mount Cook, New Zealand's highest peak, standing at 3,724 meters, offering spectacular views and serving as a prime destination for outdoor adventure enthusiasts.

How long does it take to climb Aoraki Mount Cook in the Southern Alps?

A round-trip climb from Plateau Hut to the summit of Aoraki Mount Cook typically takes between 16 to 22 hours, contingent on route conditions. A very high level of physical fitness is a prerequisite for attempting the summit. Due to the demanding nature of the terrain, guided climbs of Aoraki Mount Cook are exclusively offered on a 1:1 basis.

What kind of activities can I do in the Southern Alps?

The Southern Alps offer a plethora of activities for adventure seekers. You can explore stunning hiking trails, experience world-class skiing and snowboarding in winter, go mountaineering, enjoy scenic flights for breathtaking aerial views, or try white-water rafting on glacial rivers. The region is a haven for nature lovers and adrenaline junkies alike.

When is the best time to visit the Southern Alps?

The best time to visit the Southern Alps depends on your planned activities. For hiking and general exploration, the summer months (December to February) offer the most pleasant weather. Winter (June to August) is ideal for snow sports. Spring (September to November) and autumn (March to May) provide beautiful scenery with fewer crowds.