Sunbury climate — normals and trends
Sunbury has a temperate oceanic climate, averaging 12.4 °C annually with 593 mm of rain per year.
Climate normals · ERA5
SunburyVictoria
- coords
- -37.58°, 144.73°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
12.4°C
Average daily high
17.7°C
Average daily low
7.8°C
Annual rainfall
593mm
Sunshine / day
9.5h
Mean relative humidity
74%
Average peak wind
19.3km/h
Seasonal range
11.0°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
103 d/yr
Annual snowfall
0.2 cm
Average feels-like high
15.6 °C
Average feels-like low
5.3 °C
Average peak gust
42.6 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
16.0 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.35 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
43.6 °C
7 February 2009
Coldest day
-3.9 °C
4 August 1997
Wettest day
91 mm
5 February 1973
Windiest day
47.0 km/h
31 July 2014
Strongest gust
101.9 km/h
6 November 1994
Hottest feels-like
42.4 °C
16 January 2014
Coldest feels-like
-7.2 °C
4 August 1997
Snowiest day
3.4 cm
23 June 1981
Sunniest day
14.6 h
23 December 2023
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.3 °C | +1.6 °C | 40 mm | -8 mm |
| Feb | 26.7 °C | +2.2 °C | 22 mm | -21 mm |
| Mar | 24.7 °C | +2.5 °C | 34 mm | -5 mm |
| Apr | 20.8 °C | +2.7 °C | 23 mm | -19 mm |
| May | 16.5 °C | +2.3 °C | 16 mm | -29 mm |
| Jun | 11.2 °C | -0.2 °C | 59 mm | +17 mm |
| Jul | 11.5 °C | +0.8 °C | 57 mm | +15 mm |
| Aug | 12.9 °C | +0.9 °C | 42 mm | -12 mm |
| Sep | 15.4 °C | +1.0 °C | 27 mm | -32 mm |
| Oct | 18.3 °C | +1.1 °C | 65 mm | +1 mm |
| Nov | 18.6 °C | -1.3 °C | 111 mm | +51 mm |
| Dec | 22.8 °C | +0.2 °C | 38 mm | -17 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Sunbury (Australia) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 593 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is January (18.0 °C on average) and the coldest is July (7.0 °C). Rainfall peaks in October.
Sunbury averages 5 frost days, 19 hot days (≥ 30 °C) and 103 rainy days per year.
Sunbury has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 7 to 4 per year over the period.
The hottest day of the period reached 43.6 °C (on 7 February 2009) and the coldest -3.9 °C (on 4 August 1997).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Sunbury with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sunbury
Other cities — Australia
Frequently asked questions
What is the climate of Sunbury?
Sunbury has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 593 mm of precipitation per year.
What is the hottest day ever recorded in Sunbury?
The hottest day measured in Sunbury between 1940 and 2025 was 7 February 2009, reaching 43.6 °C.
What is the coldest day in Sunbury?
The coldest day measured in Sunbury between 1940 and 2025 was 4 August 1997, at -3.9 °C.
Does it snow in Sunbury?
Almost never: Sunbury sees virtually no snow, with about 5 frost days per year.
Has the climate of Sunbury warmed?
Yes: Sunbury warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sunbury?
The wettest day measured in Sunbury between 1940 and 2025 was 5 February 1973, with 91 mm of rain in 24 hours.
What was the windiest day in Sunbury?
The windiest day measured in Sunbury between 1940 and 2025 was 31 July 2014, with winds reaching 47.0 km/h.
What is the warmest month in Sunbury?
The warmest month in Sunbury is January (18.0 °C on average); the coldest is July (7.0 °C).
How much does it rain in Sunbury?
Sunbury receives on average 593 mm of precipitation per year, spread over about 103 rainy days.
Is it sunny in Sunbury?
Sunbury gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sunbury?
The heaviest 24-hour snowfall measured in Sunbury between 1940 and 2025 was 23 June 1981, with 3.4 cm.
Are there tropical nights in Sunbury?
Yes: Sunbury has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sunbury?
In Sunbury, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 16 January 2014, and the lowest was -7.2 °C on 4 August 1997.
These forecasts and records come from our own weather API. Developer documentation →