Stewart Island Weather in January

Average temperatures, rainfall, sunshine and the best places to visit in Stewart Island, New Zealand in January.

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Half-moon Bay

Considering a trip to Stewart Island, New Zealand this January and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Stewart Island in January

Stewart Island, New Zealand is a region in New Zealand. January in Stewart Island generally has mild temperatures, with high precipitation.

Temperatures

You can expect mild maximum daytime temperatures of around 17°C (63°F) and nighttime temperatures around 11°C (52°F) in Half-moon Bay.

To learn more about the conditions in specific areas of Stewart Island, New Zealand, check out the map below.

Precipitation

January is a rainy month with an average rainfall of around 130 mm (5.1 in) in Half-moon Bay.

Average sunshine

Sunshine is moderately available across various locations. In Half-moon Bay, you can expect around 187 hours of sunlight in January, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Stewart Island by month

Pick a month to see the average temperature, rainfall and sunshine in Stewart Island - and find the best time to visit. (based on Half-moon Bay)

January17°C (63°F) February17°C (63°F) March16°C (61°F) April15°C (59°F) May13°C (55°F) June11°C (52°F) This monthJuly10°C (50°F) August11°C (52°F) September12°C (54°F) October13°C (55°F) November15°C (59°F) December16°C (61°F)
Best Time to Visit Stewart Island →

Best Places to Visit in Stewart Island in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Stewart Island.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Stewart Island

What is the weather like in January for the most popular destinonation in Stewart Island, New Zealand?

Half-moon Bay

In January Half-moon Bay generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are mixed that month.

« December
January
February »
December
January
February
Max temperature
16°C (61°F)
17°C (63°F)
17°C (63°F)
Min temperature
10°C (50°F)
11°C (52°F)
11°C (52°F)
Monthly sun hours
192 hours
187 hours
166 hours
Monthly rainfall
125 mm (4.9 in)
130 mm (5.1 in)
111 mm (4.4 in)
Monthly rainy days
23 days
23 days
20 days
Weather conditions
mixed
mixed
mixed
Climate in Half-moon Bay →

Is your destination not in the list? Have a look at all destinations in Stewart Island, in New Zealand.

In our records: New Zealand January extremes

Notable January records observed across cities in New Zealand in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest January day in New Zealand brought 219 mm (8.6 in) in Whangarei on January 19, 2018.

Stewart Island weather in January: frequently asked questions

What is the weather like in Stewart Island, New Zealand in January?

January in Stewart Island, New Zealand brings mixed weather. In Half-moon Bay, daytime temperatures are typically around 17°C (63°F) and nighttime lows hover near 11°C (52°F).

What is the average temperature in Stewart Island, New Zealand in January?

Average temperatures in Stewart Island, New Zealand during January range from a nighttime low near 11°C (52°F) to a daytime high around 17°C (63°F) in Half-moon Bay.

Does Stewart Island, New Zealand get a lot of rain in January?

Half-moon Bay typically receives notable rainfall in January, about 130 mm (5.1 in) on average across Stewart Island, New Zealand.

Is January a Good Time to Visit Stewart Island, New Zealand?

In our view, January is one of the best times to travel to Stewart Island, New Zealand, however the weather can often be mixed in Half-moon Bay.

Generally speaking, January, February, March, April, August, November and December provide mixed weather in Half-moon Bay.

Interested in more climate information?

We have much more information about the climate in Stewart Island.

Weather and climate has detailed information for every country in the world. Are you going to New Zealand? Get detailed historical weather averages for many cities in New Zealand.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

The Tongariro Crossing in New Zealand

It is called the most beautiful walk in New Zealand, the Tongariro Crossing. The official hiking season starts late October until end of April.

White-water sledge and raft in Rotorua

We recommend to white-water sledge and raft in Rotorua in summer (January, February) when the Glacier melt fills the rivers. This is the best time.
Must visit in New Zealand →