| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 29.9° | 15.4° | 10.1mm | 1.8 | 85 |
| February | 30.2° | 16° | 8.2mm | 1.7 | 84 |
| March | 27.8° | 14.5° | 19.1mm | 3.2 | 90 |
| April | 24.2° | 11.8° | 38.8mm | 6.7 | 87 |
| May | 21° | 9.3° | 100mm | 10.7 | 79 |
| June | 18.5° | 8° | 136.8mm | 14.6 | 66 |
| July | 17.3° | 7.4° | 149.2mm | 17.3 | 61 |
| August | 17.7° | 7.7° | 122.7mm | 15.9 | 63 |
| September | 18.7° | 8.5° | 79.9mm | 13.8 | 68 |
| October | 21.2° | 9.7° | 35.9mm | 7.6 | 85 |
| November | 24.7° | 12.1° | 20.7mm | 4.7 | 91 |
| December | 27.7° | 13.7° | 14.9mm | 2.5 | 92 |
January in Bunbury averages a daily high of 29.9°C with nights around 15.4°C. Rain is rare — about 1.8 wet days and 10.1mm across the month. Comfortable conditions for being outdoors all day.
February in Bunbury averages a daily high of 30.2°C with nights around 16°C. Rain is rare — about 1.7 wet days and 8.2mm across the month. Comfortable conditions for being outdoors all day.
March in Bunbury averages a daily high of 27.8°C with nights around 14.5°C. Expect roughly 3.2 wet days totalling 19.1mm. Comfortable conditions for being outdoors all day.
April in Bunbury averages a daily high of 24.2°C with nights around 11.8°C. Expect roughly 6.7 wet days totalling 38.8mm. Comfortable conditions for being outdoors all day.
May in Bunbury averages a daily high of 21°C with nights around 9.3°C. Expect roughly 10.7 wet days totalling 100mm. Comfortable conditions for being outdoors all day.
June in Bunbury averages a daily high of 18.5°C with nights around 8°C. Expect roughly 14.6 wet days totalling 136.8mm. Generally workable, with some weather to plan around.
July in Bunbury averages a daily high of 17.3°C with nights around 7.4°C. Expect roughly 17.3 wet days totalling 149.2mm. Generally workable, with some weather to plan around.
August in Bunbury averages a daily high of 17.7°C with nights around 7.7°C. Expect roughly 15.9 wet days totalling 122.7mm. Generally workable, with some weather to plan around.
September in Bunbury averages a daily high of 18.7°C with nights around 8.5°C. Expect roughly 13.8 wet days totalling 79.9mm. Generally workable, with some weather to plan around.
October in Bunbury averages a daily high of 21.2°C with nights around 9.7°C. Expect roughly 7.6 wet days totalling 35.9mm. Comfortable conditions for being outdoors all day.
November in Bunbury averages a daily high of 24.7°C with nights around 12.1°C. Expect roughly 4.7 wet days totalling 20.7mm. Comfortable conditions for being outdoors all day.
December in Bunbury averages a daily high of 27.7°C with nights around 13.7°C. Rain is rare — about 2.5 wet days and 14.9mm across the month. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Bunbury peaks at 92.
Based on 30 years of records, October–April scores highest for comfort in Bunbury, balancing daytime temperature against rainfall.
February is the warmest, averaging a daily high of 30.2°C.
July is the wettest, averaging 149.2mm of rain across roughly 17.3 wet days.
July is the coolest month, with average daily highs around 17.3°C.