Cool
Average highs are around 17°C, so pack for cooler days.
May verdict
Chatham Islands, New Zealand in May
Weather score27Poor
Poor for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 0h per day, so this is not one of the brighter months. Rainfall averages 78mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
17°C
Rain
78mm
Sun
0h
Sea
14°C
Weather score
27
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 78mm, 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 14°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
May17°C average high
May is close to Chatham Islands' yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJanuary to March
This stretch sets the upper range for average daytime heat.
Rain
May78mm average rain
May sits near Chatham Islands' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
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
May0 hours average sun
May 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
May14°C average sea
May is close to Chatham Islands' yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to April
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
May27 weather score
May 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.