Climate averages 1991–2020

Bunbury weather
in May.

A mild, moderately wet month: the 8th warmest and the 9th driest of the year.

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

Average high 19.3°C Daytime mean, May

Average low 12.3°C Night-time mean, May

Rainfall 87 mm 8 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

May is a mild month in Bunbury: daytime highs average 19.3°C and nights cool to about 12.3°C. By daytime temperature it is the 8th warmest of the 12 months.

Expect about 87 mm of rain on roughly 8 days, which makes May a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 26 min on an average May day.

The nearest other city in this atlas is Mandurah (89 km away). In May its highs average 20.5°C, 1.1°C warmer than Bunbury, with 73 mm of rain.

Among the 32 cities listed in Australia, Bunbury ranks 17th of 32 for the warmest May highs and 29th of 32 for the driest May (rainfall, lowest first). The mean May high of those 32 cities is 19.5°C; Bunbury is 0.1°C cooler than that mean.

From May to June, average highs fall by 2.6°C to 16.8°C, and monthly rainfall rises from 87 mm to 117 mm.

The annual picture

May in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

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

Every month, side by side

Bunbury climate table

1991–2020

Monthly climate averages for Bunbury, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	28.4°C16.8°C	16.8°C	11	1.9	14.114 h
February	28.5°C17.2°C	17.2°C	13	1.6	13.313 h
March	26.3°C16.3°C	16.3°C	22	3.1	12.312 h
April	22.8°C14.4°C	14.4°C	30	4.9	11.311 h
May, selected	19.3°C12.3°C	12.3°C	87	8.4	10.410 h
June	16.8°C10.9°C	10.9°C	117	11.6	10.010 h
July	15.7°C9.9°C	9.9°C	127	13.7	10.210 h
August	16.0°C9.6°C	9.6°C	106	12.3	10.911 h
September	16.8°C10.0°C	10.0°C	74	9.9	11.912 h
October	19.5°C11.2°C	11.2°C	34	5.5	12.913 h
November	22.9°C13.4°C	13.4°C	29	4.8	13.814 h
December	26.2°C15.2°C	15.2°C	11	1.9	14.314 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 Bunbury

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 Bunbury) is explained once on the Bunbury year overview and on the Sources, method and limits page.