Cool
Average highs are around 14°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 3.8h per day, so this is not one of the brighter months. Rainfall averages 46mm, which is relatively low for holiday planning.
Monthly averages
Temp
14°C
Rain
46mm
Sun
3.8h
Sea
12°C
Weather score
26
Poor
Cool
Average highs are around 14°C, so pack for cooler days.
Drier
Rainfall averages 46mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.8h 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
Compare Oamaru, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
May14°C average high
May is on the cooler side of Oamaru'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.
May46mm average rain
May is close to Oamaru's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
May3.8 hours average sun
May is one of Oamaru's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to February and October to December
This stretch has the strongest sunshine in the monthly averages.
May12°C average sea
May is close to Oamaru's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to March and December
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
May26 weather score
May 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 February and November to December
These months have the strongest weather score in the monthly averages.