Australia · 1991–2020

Best time to visit
Trentham.

March leads for comfortable weather in Trentham: typically 24.5°C by day, 11.1°C at night, with 30 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high24.5°C

Typical low11.1°C

Rain in March30 mm

Comfort

March

March · December · February

91climate match

Beach

January

January · February · December

74climate match

Outdoors

April

April · October · November

94climate match

The weakest month is July, scoring 28 against March’s 91 — days reach only 11.8°C, 12° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

8128.3° / 13.5°

Feb

8427.7° / 13.5°

Mar

9124.5° / 11.1°

Apr

7220° / 8°

May

4915.7° / 5.7°

Jun

3412.6° / 4°

Jul

2811.8° / 3.4°

Aug

3313.1° / 3.6°

Sep

4615.8° / 5.2°

Oct

6519.5° / 6.9°

Nov

8122.8° / 9.6°

Dec

8525.7° / 11.3°

Monthly climate evidence for Trentham — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	28.3°C	13.5°C	42 mm	4.5	14 h 28	81	Strong coverage
February	27.7°C	13.5°C	40 mm	3.7	13 h 32	84	Strong coverage
March	24.5°C	11.1°C	30 mm	3.9	12 h 26	91	Strong coverage
April	20°C	8°C	36 mm	5	11 h 11	72	Strong coverage
May	15.7°C	5.7°C	54 mm	7.8	10 h 09	49	Strong coverage
June	12.6°C	4°C	61 mm	9.2	9 h 36	34	Strong coverage
July	11.8°C	3.4°C	58 mm	11.3	9 h 49	28	Strong coverage
August	13.1°C	3.6°C	62 mm	10.8	10 h 42	33	Strong coverage
September	15.8°C	5.2°C	61 mm	9.5	11 h 54	46	Strong coverage
October	19.5°C	6.9°C	49 mm	7.4	13 h 07	65	Strong coverage
November	22.8°C	9.6°C	52 mm	6.2	14 h 12	81	Strong coverage
December	25.7°C	11.3°C	39 mm	5.1	14 h 44	85	Strong coverage

What has changed

Trentham runs +0.3°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.8

Feb

-0.8

Mar

+0.1

Apr

0.0

May

-0.1

Jun

-0.2

Jul

+0.2

Aug

+0.2

Sep

+0.8

Oct

+1.2

Nov

+0.4

Dec

+1.0

March daytime highs, 2011–2025. Last recorded: 28.1°C.

Records at CASTLEMAINE PRISON, 1966–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	43.7°C31 Jan 1968	-0.1°C12 Jan 2012	91 mm13 Jan 1973	208 mm2011 · driest 0 mm in 2013	59
February	43.9°C7 Feb 2009	2.5°C16 Feb 2025	101 mm5 Feb 2011	204 mm2012 · driest 0 mm in 1991	60
March	38.5°C9 Mar 2024	0.6°C31 Mar 1973	68 mm21 Mar 1989	100 mm1969 · driest 2 mm in 2024	61
April	34.0°C11 Apr 2018	-3.0°C24 Apr 1999	63 mm2 Apr 2024	141 mm2017 · driest 5 mm in 1994	61
May	26.0°C1 May 1988	-2.6°C10 May 2011	66 mm18 May 2007	152 mm2007 · driest 8 mm in 1991	61
June	21.1°C7 Jun 1967	-4.9°C12 Jun 1972	46 mm1 Jun 2013	136 mm1991 · driest 7 mm in 2017	61
July	21.4°C30 Jul 1975	-6.3°C21 Jul 1982	46 mm18 Jul 1990	99 mm1995 · driest 13 mm in 1994	61
August	24.7°C29 Aug 1982	-4.1°C6 Aug 1974	38 mm7 Aug 1978	139 mm1981 · driest 14 mm in 1982	59
September	28.9°C30 Sep 2001	-4.0°C7 Sep 1995	53 mm14 Sep 2016	162 mm2016 · driest 12 mm in 2018	60
October	34.5°C12 Oct 2006	-4.0°C3 Oct 1989	49 mm8 Oct 1975	206 mm2022 · driest 3 mm in 2006	60
November	40.1°C21 Nov 2019	0.0°C12 Nov 1977	76 mm27 Nov 2010	178 mm2010 · driest 4 mm in 1982	60
December	42.0°C31 Dec 2005	1.0°C6 Dec 2013	55 mm4 Dec 1990	112 mm1986 · driest 0 mm in 1972	60

Typical days per month at CASTLEMAINE PRISON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	21	12	0	1
February	19	10	0	1
March	14	5	0	<1
April	4	<1	<1	1
May	0	0	2	2
June	0	0	4	2
July	0	0	5	1
August	0	0	5	2
September	<1	0	3	2
October	5	<1	<1	1
November	10	4	0	2
December	16	7	0	1

How often, not how much — every day in CASTLEMAINE PRISON’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	82%	14%	4%	8%	25.3–31.1°C
February	84%	12%	4%	7%	25.3–30.1°C
March	73%	14%	3%	12%	22.3–27.5°C
April	47%	19%	4%	19%	18.3–22.1°C
May	9%	26%	5%	30%	14.5–17.0°C
June	<1%	31%	5%	41%	11.6–13.5°C
July	<1%	37%	5%	49%	10.7–12.6°C
August	2%	36%	6%	48%	12.0–14.5°C
September	12%	31%	6%	36%	14.4–17.4°C
October	37%	26%	6%	29%	17.5–21.3°C
November	57%	22%	5%	23%	20.4–25.2°C
December	74%	17%	5%	13%	23.3–27.9°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1967Each stripe is one year’s mean temperature against the 51-year average. Warmest: 2016. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2146065
NOAA station: ASN00088110 · CASTLEMAINE PRISON
Station distance: 35 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude -37.39°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from CASTLEMAINE PRISON is what differs

Castlemaine→Daylesford→Campbells Creek→Maldon→Chewton→Harcourt→

Or put two places side by side: Trentham vs Castlemaine

Best time to visitTrentham.