Cool
Average highs are around 11°C, so pack for cooler days.
Weather Guide
Oamaru, New Zealand Average Monthly Weather
Weather score32Poor annual avg
Best months: January, February, December
Across the year, average daytime temperatures are around 16°C, sunshine averages 4.8h per day, and rainfall totals about 535mm. Sea temperatures average 12°C across the year.
Annual weather
Annual averages
Temp
16°C
Rain
535mm
Annual total
Sun
4.8h
Sea
12°C
Weather score
32
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 49mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.6h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Weather map
Compare Oamaru, New Zealand with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July11°C average high
July has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
July49mm average rain
July 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.
Sun
July3.6 hours average sun
July 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.
Sea temperature
July10°C average sea
July is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary to March and December
Sea temperatures are usually near 15°C in this stretch, so swimming comfort is at its strongest.
Weather score
July25 weather score
July 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.