Mernda climate — normals and trends
Mernda (Australia) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 605 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 (18.7 °C on average) and the coldest is July (7.4 °C). Rainfall peaks in October.
Mernda averages 5 frost days, 22 hot days (≥ 30 °C) and 104 rainy days per year.
Mernda has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The number of frost days there went from about 7 to 3 per year over the period.
The hottest day of the period reached 44.5 °C (on 7 February 2009) and the coldest -4.2 °C (on 21 July 1982).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MerndaVictoria
- coords
- -37.60°, 145.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.9°C
Average daily high
18.2°C
Average daily low
8.3°C
Annual rainfall
605mm
Sunshine / day
9.3h
Mean relative humidity
74%
Average peak wind
19.7km/h
Seasonal range
11.3°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
22 d/yr
Rainy days (≥ 1 mm)
104 d/yr
Annual snowfall
0.1 cm
Average feels-like high
16.2 °C
Average feels-like low
5.8 °C
Average peak gust
42.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
16.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.39 · 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).
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
Hottest day
44.5 °C
7 February 2009
Coldest day
-4.2 °C
21 July 1982
Wettest day
73 mm
15 May 1974
Windiest day
49.2 km/h
20 September 1959
Strongest gust
104.4 km/h
30 August 2005
Hottest feels-like
43.2 °C
16 January 2014
Coldest feels-like
-7.8 °C
21 July 1982
Snowiest day
1.8 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 see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 27.0 °C | +1.7 °C | 39 mm | -6 mm |
| Feb | 27.4 °C | +2.3 °C | 20 mm | -22 mm |
| Mar | 25.4 °C | +2.6 °C | 47 mm | +8 mm |
| Apr | 21.5 °C | +2.9 °C | 22 mm | -23 mm |
| May | 17.0 °C | +2.3 °C | 15 mm | -33 mm |
| Jun | 11.8 °C | 0.0 °C | 46 mm | +3 mm |
| Jul | 12.2 °C | +1.0 °C | 63 mm | +16 mm |
| Aug | 13.5 °C | +1.0 °C | 41 mm | -16 mm |
| Sep | 16.0 °C | +1.1 °C | 28 mm | -32 mm |
| Oct | 18.9 °C | +1.2 °C | 64 mm | -2 mm |
| Nov | 19.3 °C | -1.1 °C | 108 mm | +47 mm |
| Dec | 23.2 °C | +0.1 °C | 41 mm | -14 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Mernda?
Mernda has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 605 mm of precipitation per year.
What is the hottest day ever recorded in Mernda?
The hottest day measured in Mernda between 1940 and 2025 was 7 February 2009, reaching 44.5 °C.
What is the coldest day in Mernda?
The coldest day measured in Mernda between 1940 and 2025 was 21 July 1982, at -4.2 °C.
Does it snow in Mernda?
Almost never: Mernda sees virtually no snow, with about 5 frost days per year.
Has the climate of Mernda warmed?
Yes: Mernda warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mernda?
The wettest day measured in Mernda between 1940 and 2025 was 15 May 1974, with 73 mm of rain in 24 hours.
What was the windiest day in Mernda?
The windiest day measured in Mernda between 1940 and 2025 was 20 September 1959, with winds reaching 49.2 km/h.
What is the warmest month in Mernda?
The warmest month in Mernda is January (18.7 °C on average); the coldest is July (7.4 °C).
How much does it rain in Mernda?
Mernda receives on average 605 mm of precipitation per year, spread over about 104 rainy days.
Is it sunny in Mernda?
Mernda gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mernda?
The heaviest 24-hour snowfall measured in Mernda between 1940 and 2025 was 23 June 1981, with 1.8 cm.
Are there tropical nights in Mernda?
Yes: Mernda has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mernda?
In Mernda, between 1940 and 2025, the highest apparent temperature reached 43.2 °C on 16 January 2014, and the lowest was -7.8 °C on 21 July 1982.
Compare Mernda with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mernda