Stewart Island Weather in August

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

Thinking about venturing to Stewart Island, New Zealand this August and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Stewart Island in August

Stewart Island, New Zealand is a region in New Zealand. August in Stewart Island generally has cold temperatures, with moderate precipitation.

Temperatures

You can expect cold maximum daytime temperatures of around 11°C (52°F) and nighttime temperatures around 6°C (43°F) in Half-moon Bay.

For a closer look at conditions across Stewart Island, New Zealand, refer to the map below.

Precipitation

August is a moderate rainy month with an average rainfall of around 97 mm (3.8 in) in Half-moon Bay.

Average sunshine

Sunshine is moderately available across various locations. In Half-moon Bay, you can expect around 125 hours of sunlight in August, 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)

Best Places to Visit in Stewart Island in August

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

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 August for the most popular destinonation in Stewart Island, New Zealand?

Half-moon Bay

In August Half-moon Bay generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
10°C (50°F)
11°C (52°F)
12°C (54°F)
Min temperature
5°C (41°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
99 hours
125 hours
142 hours
Monthly rainfall
96 mm (3.8 in)
97 mm (3.8 in)
116 mm (4.6 in)
Monthly rainy days
26 days
24 days
23 days
Weather conditions

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

Stewart Island weather in August: frequently asked questions

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

August in Stewart Island, New Zealand brings unpleasant weather. In Half-moon Bay, daytime temperatures are typically around 11°C (52°F) and nighttime lows hover near 6°C (43°F).

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

In Half-moon Bay, the average daytime high in August is 11°C (52°F), while nighttime temperatures drop to around 6°C (43°F).

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

Not particularly. Half-moon Bay averages just 97 mm (3.8 in) of rain in August, making it a mostly dry month for Stewart Island, New Zealand.

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

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

Generally speaking, January, February, March, April, August, November and December provide unpleasant 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.