Cool
Average highs are around 14°C, so pack for cooler days.
September verdict
Marlborough Sounds, New Zealand in September
Weather score22Poor
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 125mm, so some wet days are possible.
September weather
Monthly averages
Temp
14°C
Rain
125mm
Sun
5.1h
Sea
13°C
Weather score
22
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 125mm, so some wet days are possible.
Some sun
Sunshine averages 5.1h per day, enough for a balanced month.
Cool sea
Sea temperatures average 13°C, so the water can feel cool.
Map
Weather map
Compare Marlborough Sounds, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September14°C average high
September is on the cooler side of Marlborough Sounds' 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
September125mm average rain
September sits near Marlborough Sounds' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to March
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.1 hours average sun
September is below Marlborough Sounds' 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
September13°C average sea
September 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 16°C in this stretch, so swimming comfort is at its strongest.
Weather score
September22 weather score
September scores below Marlborough Sounds' yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to February
These months have the strongest weather score in the monthly averages.