Climate averages 1991–2020

Bunbury weather
in January.

A hot, very dry month: the 2nd warmest and one of the driest of the year. Meets the pleasant-weather rule

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

Average high 28.4°C Daytime mean, January

Average low 16.8°C Night-time mean, January

Rainfall 11 mm 2 days with ≥1 mm

Daylight 14 h Sunrise to sunset, per day

January is a hot month in Bunbury: daytime highs average 28.4°C and nights cool to about 16.8°C. By daytime temperature it is the 2nd warmest of the 12 months.

Expect about 11 mm of rain on roughly 2 days, which makes January a very dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 14 h 05 min on an average January day.

The nearest other city in this atlas is Mandurah (89 km away). In January its highs average 30.2°C, 1.8°C warmer than Bunbury, with 12 mm of rain.

Among the 32 cities listed in Australia, Bunbury ranks joint 10th of 32 for the warmest January highs and 1st of 32 for the driest January (rainfall, lowest first). The mean January high of those 32 cities is 27.2°C; Bunbury is 1.2°C warmer than that mean.

From January to February, average highs rise by 0.1°C to 28.5°C, and monthly rainfall rises from 11 mm to 13 mm.

The annual picture

January 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, selected	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	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

January 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.