Cool
Average highs are around 16°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 4h per day, so this is not one of the brighter months. Rainfall averages 90mm, so some wet days are possible.
Monthly averages
Temp
16°C
Rain
90mm
Sun
4h
Sea
16°C
Weather score
24
Poor
Cool
Average highs are around 16°C, so pack for cooler days.
Showers
Rainfall averages 90mm, so some wet days are possible.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Compare Whanganui, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
May16°C average high
May is on the cooler side of Whanganui'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.
May90mm average rain
May is wetter than Whanganui's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May4 hours average sun
May is below Whanganui'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.
May16°C average sea
May is close to Whanganui's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to April
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
May24 weather score
May scores below Whanganui's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.