I was worried about bad weather and having to cancel the trip the day before departure, but thankfully the weather was great on the day of departure! I recommend choosing a SIM card with phone call functionality if you're traveling here, as you can call half an hour before departure to confirm if the trip is canceled, so you don't make a wasted trip. It was my first time experiencing glacier hiking, and the guides and staff were all very nice and patient. The guides would stop for everyone to take photos, which was a lot of fun. Seeing the ancient glacier in person was truly breathtaking! I highly recommend including this trip when you visit New Zealand's South Island!
The diver was very nice and introduce everything in details.
Anonymous User
Family
Mt Cook Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-10
Mt Cook year round climate
Spring (September – November): Average -3.3°C to 1.0°C. Temperatures gradually rise but remain severely cold. September is the month with relatively more rainfall throughout the year (though total amount is still low). Weather changes rapidly, high-altitude areas still have snow cover, and the air is dry. Recommended activities: Alpine trekking (requires professional equipment and experience), glacier viewing, photography. Suggested attire: Multi-layered warm clothing, waterproof and windproof jacket, warm hat, gloves, scarf, sturdy waterproof hiking boots.
Summer (December – February): Average 3.9°C to 5.9°C. Temperatures are highest throughout the year but still low. Very little rainfall, mostly clear and dry weather. UV radiation is strong, with large day-night temperature differences. Recommended activities: Hiking (multiple trail options), glacier hiking, scenic flights, stargazing. Suggested attire: Warm base layers, waterproof and windproof jacket, trousers, sun protection (hat, sunglasses, sunscreen), hiking shoes.
Autumn (March – May): Average -2.5°C to 1.9°C. Temperatures drop rapidly, ushering in the eve of severe winter. Weather is dry, with potential for clear but cold days. Snowfall may begin in May. Recommended activities: Short hikes, admiring the first signs of snow on the mountains, photography. Suggested attire: Thick warm jacket, sweater, trousers, waterproof warm shoes, hat, gloves.
Winter (June – August): Average -3.7°C to -2.8°C. Extremely severe cold, temperatures often below freezing. Most precipitation is snow, creating a silvery-white world. Air is dry, and strong winds may occur. Recommended activities: Snow hiking (requires professional guidance), ice climbing (for experienced individuals only), glacier sightseeing. Suggested attire: Expedition-grade warm clothing (down jacket, wool layers), waterproof and windproof outer layer, snow pants, warm hat, thick gloves, snow boots, goggles.
Mt Cook climatological average
Annual average temperature: approx. 0.2°C / Annual rainfall: approx. 155 mm / Summer humidity: 40-60% / Rainiest month: September
Mt Cook monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
5.9°C
19
February
4.7°C
6.9
March
1.9°C
7.7
April
1.6°C
18.7
May
-2.5°C
4.4
June
-2.8°C
8.9
July
-3.3°C
7.9
August
-3.7°C
17.6
September
-3.3°C
25.6
October
-1.3°C
14.5
November
1°C
11.1
December
3.9°C
12.9
Mt Cook weather for the next seven days
9/8
Tuesday
Overcast
0°C/-6°C
9/9
Wednesday
Mist
-1°C/-4.5°C
9/10
Thursday
Light rain shower
-1.8°C/-7.9°C
9/11
Friday
Freezing fog
-1.1°C/-7.8°C
9/12
Saturday
Freezing fog
-1.2°C/-4.9°C
9/13
Sunday
Mist
-0.5°C/-4.3°C
9/14
Monday
Partly Cloudy
0.2°C/-6.4°C
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