Cool
Average highs are around 7°C, so pack for cooler days.
Weather Guide
Arthur's Pass National Park, New Zealand Average Monthly Weather
Weather score12Poor annual avg
Best months: February, January, March
Across the year, average daytime temperatures are around 12°C, sunshine averages 4.7h per day, and rainfall totals about 3034mm. Sea temperatures average 15°C across the year.
Annual weather
Annual averages
Temp
12°C
Rain
3034mm
Annual total
Sun
4.7h
Sea
15°C
Weather score
12
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 247mm, so showers are a real planning factor.
Limited sun
Sunshine averages 3.5h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Weather map
Compare Arthur's Pass National Park, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August7°C average high
August is on the cooler side of Arthur's Pass National Park'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
August247mm average rain
August sits near Arthur's Pass National Park's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to March and June
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August3.5 hours average sun
August is below Arthur's Pass National Park's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJanuary to February and November to December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August12°C average sea
August is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to March
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
August8 weather score
August is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.