Cool
Average highs are around 14°C, so pack for cooler days.
September verdict
Chatham Islands, New Zealand in September
Weather score27Poor
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 65mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
14°C
Rain
65mm
Sun
0h
Sea
11°C
Weather score
27
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 65mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 0h 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 Chatham Islands, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September14°C average high
September has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJanuary to March
This stretch sets the upper range for average daytime heat.
Rain
September65mm average rain
September sits on the drier side of Chatham Islands' year, which helps with sightseeing and transfers.
Driest monthsJanuary to May and July to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September0 hours average sun
September is close to Chatham Islands' usual sunshine level, with limited seasonal swing across the year.
Brightest monthsAll year
Sunshine stays consistently strong through the year.
Sea temperature
September11°C average sea
September is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to April
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
September27 weather score
September scores below Chatham Islands' yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to February and December
These months have the strongest weather score in the monthly averages.