Climate averages 1991–2020

Dunedin weather
in May.

A cool, moderately wet month: the 9th warmest and the joint 4th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 11.5°C Daytime mean, May
Average low 5.5°C Night-time mean, May
Rainfall 50 mm 10 days with ≥1 mm
Daylight 9 h Sunrise to sunset, per day
Every month in Dunedin · average highYear overview

May is a cool month in Dunedin: daytime highs average 11.5°C and nights cool to about 5.5°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 50 mm of rain on roughly 10 days, which makes May a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 27 min on an average May day.

The nearest other city in this atlas is Christchurch (310 km away). In May its highs average 13.5°C, 2.0°C warmer than Dunedin, with 48 mm of rain.

Among the 11 cities listed in New Zealand, Dunedin ranks 11th of 11 for the warmest May highs and 2nd of 11 for the driest May (rainfall, lowest first). The mean May high of those 11 cities is 14.8°C; Dunedin is 3.3°C cooler than that mean.

From May to June, average highs fall by 2.6°C to 8.9°C, and monthly rainfall falls from 50 mm to 46 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 05101520 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1000

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Dunedin climate table

1991–2020
Monthly climate averages for Dunedin, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 17.4°C10.9°C10.9°C8912.915.315 h
February 17.4°C10.9°C10.9°C7410.514.014 h
March 16.1°C9.6°C9.6°C599.512.412 h
April 13.9°C7.6°C7.6°C549.310.811 h
May, selected 11.5°C5.5°C5.5°C509.79.49 h
June 8.9°C3.2°C3.2°C469.28.79 h
July 8.4°C2.3°C2.3°C398.09.09 h
August 9.7°C3.1°C3.1°C419.410.210 h
September 11.6°C4.4°C4.4°C5010.611.712 h
October 13.1°C6.1°C6.1°C7413.513.413 h
November 14.3°C7.6°C7.6°C7713.614.815 h
December 16.0°C9.6°C9.6°C9614.415.616 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Dunedin

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Dunedin) is explained once on the Dunedin year overview and on the Sources, method and limits page.