Stewart Island weather in September
Cool, with regular rainfall. Average highs of 11°C and lows of 5°C, with around 18 rainy days expected throughout the month.
While September isn't our top-rated month for Stewart Island, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
11°C
Average low
5°C
Rainy days
18 days
Best months to visit
Year-round
What to do in Stewart Island in September
Whatever the weather, Stewart Island rewards curious visitors. Here are some of the best ways to spend your time:
Spot kiwi birds in their habitat
Hike the Rakiura Track
Kayak pristine bays
Fish for blue cod
Watch humpbacks migrate
Experience the Southern Lights
What to pack for September
Layer up — a mid-weight jacket, jumpers, and comfortable trousers. Waterproof shoes are recommended. Scarves and gloves may be useful in the evenings.
Browse other months
January
16C
Cool, with regular rainfall.
February
16C
Cool, with regular rainfall.
March
15C
Cool, with regular rainfall.
April
13C
Cool, with regular rainfall.
May
11C
Cool, with frequent heavy rain.
June
9C
Cold, with regular rainfall.
July
9C
Cold, with regular rainfall.
August
9C
Cold, with regular rainfall.
September (you are here)
11C
Cool, with regular rainfall.
October
12C
Cool, with frequent heavy rain.
November
14C
Cool, with regular rainfall.
December
15C
Cool, with regular rainfall.
Book your September trip to Stewart Island
Find hotels, tours and experiences for the perfect escape.
