Dianella climate — normals and trends

Q: What is the climate of Dianella?

Dianella has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 592 mm of precipitation per year.

Q: What is the hottest day ever recorded in Dianella?

The hottest day measured in Dianella between 1940 and 2025 was 23 February 1991, reaching 41.2 °C.

Q: What is the coldest day in Dianella?

The coldest day measured in Dianella between 1940 and 2025 was 13 August 1986, at 4.9 °C.

Q: Does it snow in Dianella?

Almost never: Dianella sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Dianella warmed?

Yes: Dianella warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Dianella?

The wettest day measured in Dianella between 1940 and 2025 was 15 January 2018, with 129 mm of rain in 24 hours.

Q: What was the windiest day in Dianella?

The windiest day measured in Dianella between 1940 and 2025 was 4 April 1978, with winds reaching 63.6 km/h.

Q: What is the warmest month in Dianella?

The warmest month in Dianella is February (24.2 °C on average); the coldest is July (13.7 °C).

Q: How much does it rain in Dianella?

Dianella receives on average 592 mm of precipitation per year, spread over about 79 rainy days.

Q: Is it sunny in Dianella?

Dianella gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Dianella (Australia) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 592 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 February (24.2 °C on average) and the coldest is July (13.7 °C). Rainfall peaks in June.

Dianella averages 0 frost days, 42 hot days (≥ 30 °C) and 79 rainy days per year.

Dianella has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.2 °C (on 23 February 1991) and the coldest 4.9 °C (on 13 August 1986).

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

DianellaWestern Australia

coords: -31.89°, 115.87°
period: 1940–2025 · 86 yrs

CsaHot-summer MediterraneanWarmest monthFebruaryColdest monthJulyWettest monthJuneDriest monthDecember

Mean daily temperature

18.5°C

Average daily high

22.5°C

Average daily low

14.9°C

Annual rainfall

592mm

Sunshine / day

11.0h

Mean relative humidity

66%

Average peak wind

25.8km/h

Seasonal range

10.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

42 d/yr

Rainy days (≥ 1 mm)

79 d/yr

Annual snowfall

0.0 cm

Average feels-like high

21.5 °C

Average feels-like low

12.5 °C

Average peak gust

42.4 km/h

Tropical nights (≥ 20 °C)

41 d/yr

Solar radiation

19.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.7 °C

since 1940

+0.1 °C per decade · r² = 0.17 · p = < 0.001

19402025

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

41.2 °C

23 February 1991

Coldest day

4.9 °C

13 August 1986

Wettest day

129 mm

15 January 2018

Windiest day

63.6 km/h

4 April 1978

Strongest gust

107.6 km/h

22 September 1988

Hottest feels-like

44.6 °C

21 February 1955

Coldest feels-like

0.3 °C

12 August 1986

Sunniest day

13.9 h

27 November 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.6 °C20 January 2025	5.8 °C25 July 2025	19.1 °C	656 mm	49
2024	39.2 °C18 February 2024	8.5 °C3 July 2024	19.7 °C	552 mm	58
2023	37.0 °C23 November 2023	6.4 °C27 June 2023	19.1 °C	391 mm	54
2022	37.1 °C5 February 2022	8.0 °C18 August 2022	18.7 °C	595 mm	50
2021	39.6 °C26 December 2021	7.7 °C22 June 2021	18.8 °C	661 mm	45
2020	38.4 °C4 February 2020	8.1 °C10 July 2020	19.0 °C	490 mm	46
2019	36.5 °C20 January 2019	7.3 °C18 May 2019	18.7 °C	424 mm	44
2018	35.6 °C22 December 2018	6.8 °C15 September 2018	18.3 °C	644 mm	22
2017	36.7 °C26 January 2017	6.9 °C2 August 2017	18.5 °C	724 mm	34
2016	39.0 °C7 January 2016	5.3 °C13 July 2016	18.0 °C	541 mm	42
2015	38.0 °C5 January 2015	6.1 °C9 July 2015	19.0 °C	454 mm	44
2014	38.3 °C11 January 2014	7.1 °C23 June 2014	19.1 °C	486 mm	47
2013	36.9 °C12 February 2013	7.0 °C8 July 2013	19.2 °C	533 mm	53
2012	37.9 °C25 January 2012	5.9 °C25 July 2012	19.1 °C	492 mm	57
2011	36.4 °C16 February 2011	7.5 °C4 July 2011	19.6 °C	669 mm	69
2010	39.7 °C17 January 2010	6.2 °C4 July 2010	18.8 °C	288 mm	51
2009	37.1 °C16 January 2009	7.4 °C29 August 2009	18.7 °C	482 mm	53
2008	38.1 °C17 January 2008	5.7 °C22 September 2008	18.4 °C	661 mm	41
2007	38.8 °C6 March 2007	8.2 °C12 August 2007	18.4 °C	456 mm	41
2006	36.0 °C21 February 2006	5.9 °C17 June 2006	18.5 °C	380 mm	35
2005	39.6 °C15 February 2005	5.6 °C7 July 2005	17.8 °C	597 mm	27
2004	38.2 °C11 January 2004	5.7 °C29 August 2004	18.5 °C	477 mm	40
2003	36.9 °C8 March 2003	7.5 °C15 July 2003	18.7 °C	538 mm	44
2002	36.1 °C19 December 2002	6.6 °C16 September 2002	18.6 °C	507 mm	42
2001	35.7 °C3 March 2001	6.5 °C5 July 2001	18.1 °C	437 mm	26
2000	36.8 °C27 December 2000	7.4 °C4 August 2000	18.8 °C	550 mm	45
1999	36.5 °C22 December 1999	7.1 °C9 July 1999	19.1 °C	757 mm	48
1998	38.8 °C28 February 1998	6.2 °C27 July 1998	18.7 °C	583 mm	52
1997	39.4 °C26 February 1997	6.3 °C15 July 1997	18.7 °C	511 mm	37
1996	37.9 °C11 February 1996	7.7 °C14 August 1996	18.9 °C	732 mm	49
1995	35.3 °C19 February 1995	8.5 °C12 June 1995	18.7 °C	563 mm	41
1994	36.5 °C20 January 1994	7.8 °C5 August 1994	18.8 °C	429 mm	48
1993	36.0 °C17 December 1993	6.4 °C13 August 1993	17.9 °C	447 mm	30
1992	35.8 °C16 January 1992	7.1 °C17 August 1992	18.3 °C	794 mm	34
1991	41.2 °C23 February 1991	7.4 °C8 July 1991	18.6 °C	632 mm	38
1990	36.2 °C5 March 1990	6.1 °C26 July 1990	17.8 °C	593 mm	28
1989	38.7 °C1 February 1989	7.0 °C9 July 1989	18.4 °C	528 mm	46
1988	36.6 °C4 January 1988	7.5 °C4 June 1988	19.1 °C	737 mm	52
1987	36.9 °C18 December 1987	6.4 °C1 August 1987	18.4 °C	593 mm	37
1986	38.9 °C24 January 1986	4.9 °C13 August 1986	17.7 °C	613 mm	37
1985	39.3 °C25 February 1985	6.8 °C6 August 1985	18.8 °C	524 mm	45
1984	39.1 °C9 February 1984	7.1 °C7 June 1984	18.3 °C	625 mm	30
1983	37.0 °C16 January 1983	6.0 °C11 July 1983	19.0 °C	703 mm	41
1982	39.8 °C4 February 1982	6.6 °C2 July 1982	18.2 °C	568 mm	35
1981	38.3 °C6 January 1981	5.3 °C22 June 1981	18.1 °C	653 mm	35
1980	38.6 °C22 January 1980	7.0 °C10 October 1980	18.2 °C	536 mm	46
1979	37.7 °C26 January 1979	5.8 °C4 September 1979	18.2 °C	524 mm	44
1978	38.9 °C10 January 1978	7.5 °C9 August 1978	18.9 °C	531 mm	64
1977	37.3 °C20 February 1977	5.8 °C3 September 1977	18.5 °C	481 mm	48
1976	35.6 °C1 January 1976	6.9 °C27 July 1976	18.4 °C	577 mm	46
1975	37.9 °C3 February 1975	6.1 °C2 August 1975	18.0 °C	561 mm	38
1974	37.4 °C25 January 1974	6.9 °C14 August 1974	18.1 °C	905 mm	44
1973	36.4 °C7 December 1973	6.6 °C25 June 1973	17.9 °C	621 mm	38
1972	37.5 °C2 January 1972	6.1 °C10 August 1972	18.9 °C	560 mm	63
1971	37.7 °C22 January 1971	6.6 °C22 July 1971	17.5 °C	703 mm	31
1970	37.7 °C1 February 1970	7.0 °C19 July 1970	18.1 °C	746 mm	37
1969	38.9 °C5 January 1969	6.6 °C21 July 1969	18.3 °C	425 mm	34
1968	39.0 °C15 January 1968	6.0 °C28 August 1968	17.3 °C	714 mm	28
1967	35.8 °C1 February 1967	7.0 °C31 July 1967	18.8 °C	667 mm	44
1966	38.3 °C21 January 1966	6.2 °C9 August 1966	18.2 °C	574 mm	38
1965	39.5 °C1 January 1965	7.9 °C27 July 1965	18.6 °C	831 mm	44
1964	36.2 °C8 March 1964	6.7 °C29 May 1964	18.2 °C	897 mm	31
1963	36.6 °C19 January 1963	8.7 °C18 June 1963	19.2 °C	1,198 mm	40
1962	38.1 °C28 January 1962	7.4 °C18 August 1962	19.0 °C	745 mm	52
1961	40.7 °C18 January 1961	7.3 °C25 July 1961	19.0 °C	546 mm	51
1960	35.5 °C22 December 1960	6.8 °C1 August 1960	17.7 °C	477 mm	19
1959	38.2 °C28 January 1959	7.9 °C18 September 1959	18.9 °C	504 mm	41
1958	36.2 °C11 January 1958	7.5 °C20 July 1958	18.9 °C	705 mm	61
1957	36.4 °C3 December 1957	6.3 °C13 July 1957	18.4 °C	713 mm	35
1956	39.8 °C25 January 1956	5.4 °C1 September 1956	18.0 °C	757 mm	38
1955	37.3 °C21 February 1955	6.1 °C22 June 1955	18.2 °C	711 mm	46
1954	37.7 °C10 January 1954	7.2 °C6 August 1954	18.1 °C	531 mm	39
1953	35.6 °C15 January 1953	7.2 °C14 August 1953	18.0 °C	636 mm	28
1952	36.5 °C31 January 1952	7.2 °C15 July 1952	18.1 °C	572 mm	43
1951	38.4 °C4 February 1951	6.3 °C21 July 1951	18.0 °C	538 mm	31
1950	38.0 °C28 February 1950	7.7 °C2 July 1950	18.7 °C	701 mm	61
1949	35.1 °C17 January 1949	6.4 °C21 September 1949	18.8 °C	610 mm	41
1948	40.3 °C24 January 1948	6.6 °C2 July 1948	18.3 °C	603 mm	44
1947	35.0 °C6 February 1947	6.4 °C6 September 1947	17.7 °C	663 mm	32
1946	34.0 °C5 February 1946	7.2 °C18 August 1946	17.9 °C	537 mm	32
1945	39.3 °C6 January 1945	7.4 °C25 August 1945	18.8 °C	592 mm	60
1944	39.0 °C4 February 1944	6.8 °C9 August 1944	18.4 °C	446 mm	46
1943	35.0 °C24 December 1943	6.8 °C6 August 1943	18.4 °C	371 mm	33
1942	36.0 °C2 January 1942	5.7 °C22 June 1942	18.2 °C	647 mm	41
1941	36.1 °C8 March 1941	5.8 °C30 July 1941	18.3 °C	555 mm	56
1940	36.0 °C23 December 1940	5.5 °C23 July 1940	18.1 °C	464 mm	41

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?

Year

Across the whole year

Average daily high

23.2 °C

+0.7 °C

Hot days (≥ 30 °C)

49 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

656 mm

+64 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.8 °C	+1.1 °C	7 mm	-4 mm
Feb	28.6 °C	-0.4 °C	2 mm	-12 mm
Mar	29.0 °C	+1.7 °C	37 mm	+23 mm
Apr	24.9 °C	+1.1 °C	9 mm	-21 mm
May	22.6 °C	+2.1 °C	26 mm	-52 mm
Jun	18.9 °C	+1.0 °C	158 mm	+32 mm
Jul	16.4 °C	-0.4 °C	135 mm	+12 mm
Aug	17.4 °C	+0.3 °C	144 mm	+51 mm
Sep	19.1 °C	+0.7 °C	69 mm	+19 mm
Oct	20.3 °C	-0.4 °C	38 mm	+10 mm
Nov	24.2 °C	+0.6 °C	27 mm	+10 mm
Dec	27.8 °C	+1.4 °C	3 mm	-4 mm

The year's extremes

Hottest day

39.6 °C

20 Jan 2025

Coldest day

5.8 °C

25 Jul 2025

Wettest day

36.5 mm

4 Jun 2025

Windiest day

50.2 km/h

3 Aug 2025

Strongest gust

90.4 km/h

3 Aug 2025

Hottest feels-like

41.9 °C

20 Jan 2025

Coldest feels-like

2.7 °C

25 Jul 2025

Sunniest day

13.9 h

28 Nov 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Dianella?

Dianella has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 592 mm of precipitation per year.

What is the hottest day ever recorded in Dianella?

The hottest day measured in Dianella between 1940 and 2025 was 23 February 1991, reaching 41.2 °C.

What is the coldest day in Dianella?

The coldest day measured in Dianella between 1940 and 2025 was 13 August 1986, at 4.9 °C.

Does it snow in Dianella?

Almost never: Dianella sees virtually no snow, with about 0 frost days per year.

Has the climate of Dianella warmed?

Yes: Dianella warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Dianella?

The wettest day measured in Dianella between 1940 and 2025 was 15 January 2018, with 129 mm of rain in 24 hours.

What was the windiest day in Dianella?

The windiest day measured in Dianella between 1940 and 2025 was 4 April 1978, with winds reaching 63.6 km/h.

What is the warmest month in Dianella?

The warmest month in Dianella is February (24.2 °C on average); the coldest is July (13.7 °C).

How much does it rain in Dianella?

Dianella receives on average 592 mm of precipitation per year, spread over about 79 rainy days.

Is it sunny in Dianella?

Dianella gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.

Are there tropical nights in Dianella?

Yes: Dianella has on average 41 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Dianella?

In Dianella, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 21 February 1955, and the lowest was 0.3 °C on 12 August 1986.

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