Sunbury Weather and Climate
Climate Snapshot
Sunbury's warmest month in 2024 was December, averaging 26.2 degrees. That gives Sunbury an annual average daytime high of 18.8 degrees, 1.0 degrees cooler than the Victoria mean.
Daytime highs peak at 26.2 degrees in December and bottom out with overnight lows of 5.1 degrees in June. That is a 21.1 degree spread from hottest afternoon to coldest night. Overnight minimums average 9.4 degrees across the year, 0.6 degrees colder than the Victoria average of 10.0.
Annual rainfall totals 692mm across 105 rain days, close to the Victoria average. The wettest month is January at 142mm, and February is the driest at 6mm.
There is a pronounced wet-dry split here. January receives 142mm while February gets just 6mm, so the contrast between seasons is stark.
Our Comfort Score puts January on top at 10.0/10 and June at the bottom with 1.0/10. That's the best and worst months for pleasant weather.
Scroll down for the full month-by-month breakdown, or jump straight to January if you're picking the best time to visit Sunbury.
Monthly Comfort Score
Our Comfort Score rates each month from 1 (tough) to 10 (ideal) based on temperature, humidity, rainfall, UV, and sunshine. How we calculate it
Annual Comfort Score: 6.0/10 - Ranked #140 of 213 Australian cities (national avg 6.2, VIC avg 5.9)
Seasonal Overview
| Season | Avg Max °C | Avg Min °C | Total Rain mm | Comfort |
|---|---|---|---|---|
| Summer | 25.2 | 13.0 | 183 | 9.8 |
| Autumn | 18.7 | 9.5 | 122 | 5.7 |
| Winter | 12.5 | 6.0 | 180 | 1.8 |
| Spring | 19.0 | 9.0 | 206 | 6.6 |
Monthly Climate Averages
| Month | Max °C | Min °C | Rain mm | Rain Days | Solar MJ | Humidity % | Comfort |
|---|
Weather by Month
Detailed climate data, packing advice, and what to expect for each month in Sunbury.
24.0°C, 142mm rain February
25.3°C, 6mm rain March
24.0°C, 10mm rain April
16.9°C, 72mm rain May
15.2°C, 40mm rain June
11.4°C, 49mm rain July
10.8°C, 93mm rain August
15.4°C, 38mm rain September
15.3°C, 68mm rain October
18.6°C, 60mm rain November
23.1°C, 78mm rain December
26.2°C, 36mm rain
Compare and Explore
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