Cool
Average highs are around 17°C, so pack for cooler days.
January verdict
Stewart Island, New Zealand in January
Weather score26Poor
Poor for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 119mm, so some wet days are possible.
January weather
Monthly averages
Temp
17°C
Rain
119mm
Sun
5.1h
Sea
14°C
Weather score
26
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 119mm, so some wet days are possible.
Some sun
Sunshine averages 5.1h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°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
January17°C average high
January is one of Stewart Island's hottest months, so shade and slower afternoons matter.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
January119mm average rain
January is one of Stewart Island's wettest months, so rain is likely to be a major planning factor.
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
January5.1 hours average sun
January is brighter than Stewart Island's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJanuary to February and October to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January14°C average sea
January sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
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
January26 weather score
January scores above Stewart Island's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to March and November to December
These months have the strongest weather score in the monthly averages.