Cool
Average highs are around 10°C, so pack for cooler days.
August verdict
Stewart Island, New Zealand in August
Weather score17Poor
Poor for holiday weather
Average highs are around 10°C, so pack for cooler days. Sunshine averages 3.4h per day, so this is not one of the brighter months. Rainfall averages 80mm, so some wet days are possible.
August weather
Monthly averages
Temp
10°C
Rain
80mm
Sun
3.4h
Sea
11°C
Weather score
17
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 80mm, so some wet days are possible.
Limited sun
Sunshine averages 3.4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Stewart Island, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August10°C average high
August is on the cooler side of Stewart Island's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
August80mm average rain
August is one of Stewart Island's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsFebruary to March and June to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August3.4 hours average sun
August sits close to Stewart Island's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJanuary to February and October to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August11°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April and December
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
August17 weather score
August scores below Stewart Island's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.