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Has the climate in Bunbury changed?

Bunbury has warmed about 1.6°F since 1996.

About 0.5°F per decade, measured from Bunbury's official daily weather records, 1996–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Bunbury's warming is broadly in line with other cities in Australia — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
3 fewer nights
1970s
3 / yr
Recent
0 / yr
Milder winters — fewer frosts
Average temperature
+0.9°F
1970s
62.4°F
Recent
63.3°F
A steady upward drift
Hot days above 90°F
9 more days
1970s
28 / yr
Recent
37 / yr
More days of serious heat
Rainy days
8 fewer days
1970s
125 / yr
Recent
117 / yr
Drier on average

Bunbury's temperature, year by year

Average temperature for each year from 1996 to 2025.

60°62°64°66°1996: 62.6°F1997: 62.9°F1998: 62.3°F1999: 63.9°F2000: 62.2°F2001: 61.3°F2002: 62.3°F2003: 62.8°F2004: 62.4°F2005: 61.2°F2006: 62.4°F2007: 62.4°F2008: 62.1°F2009: 62.7°F2010: 62.7°F2011: 64.5°F2012: 63.4°F2013: 63.9°F2014: 63.8°F2015: 63.6°F2016: 61.6°F2017: 62.7°F2018: 62.5°F2019: 63.0°F2020: 63.6°F2021: 63.0°F2022: 63.2°F2023: 64.0°F2024: 65.2°F2025: 63.9°Flong-term trend19962000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 6 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-1.0°-0.5°0.0°+0.5°+1.0°January: +0.2°F+0.2JFebruary: -0.4°F-0.4FMarch: +0.7°F+0.7MApril: -0.8°F-0.8AMay: -0.4°F-0.4MJune: -0.2°F-0.2JJuly: +0.2°F+0.2JAugust: +0.2°F+0.2ASeptember: +0.0°F+0.0SOctober: +0.7°F+0.7ONovember: +0.4°F+0.4NDecember: -0.5°F-0.5D

April has cooled the most — about 0.8°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 25 years of daily observations at Bunbury, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →