Newcastle climate

Name: Newcastle
Address: AU

Newcastle is warmest in January, with average highs of 26 °C, and coldest in July, when nights average 10 °C. February is the wettest month (87 mm) and August the driest (36 mm). Figures are 1991–2020 climate normals.

Across a full year Newcastle averages 746 mm of rain and 80 days above 25 °C.

Australia · population 508,437 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 26 °C
Coldest month July 10 °C
Driest month August 36 mm
Wettest month February 87 mm
Least cloud August 32 % cloud
Hottest on record January 43 °C
Coldest on record July 3.9 °C
Warmest sea February 23 °C

What to expectNewcastle through the year

Newcastle has a clear annual cycle: average daily highs run from 16 °C in July to 26 °C in January, a swing of 9.9 °C in mean temperature across the year.

Counted across a normal year, 80 days a year reach 25 °C, 16 of them reach 30 °C. The warmest reading in the 1991–2020 record is 43 °C, in January.

Rain is strongly seasonal. February averages 87 mm against 36 mm in August — 2.4 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Newcastle is warmest in February at 23 °C and coldest in August at 18 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	26.3 °C	65 mm	52 %
February	25.7 °C	87 mm	53 %
March	24.1 °C	84 mm	48 %
April	21.8 °C	61 mm	45 %
May	19.0 °C	58 mm	44 %
June	16.7 °C	74 mm	46 %
July	16.2 °C	41 mm	38 %
August	17.6 °C	36 mm	32 %
September	20.1 °C	44 mm	36 %
October	22.0 °C	55 mm	46 %
November	23.5 °C	73 mm	55 %
December	25.0 °C	67 mm	53 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	26.3 °C	20.4 °C	22.9 °C	42.5 °C	15.2 °C	18	5
February	25.7 °C	20.4 °C	22.7 °C	39.9 °C	14.5 °C	15	3
March	24.1 °C	19.1 °C	21.3 °C	37.8 °C	12.5 °C	10	1
April	21.8 °C	16.5 °C	18.9 °C	31.5 °C	9.7 °C	4	0
May	19.0 °C	13.7 °C	16.1 °C	26.5 °C	5.8 °C	0	0
June	16.7 °C	11.6 °C	14.0 °C	23.9 °C	6.0 °C	0	0
July	16.2 °C	10.4 °C	13.0 °C	24.1 °C	3.9 °C	0	0
August	17.6 °C	10.8 °C	13.9 °C	27.0 °C	4.7 °C	0	0
September	20.1 °C	13.0 °C	16.2 °C	33.3 °C	6.7 °C	3	0
October	22.0 °C	15.2 °C	18.2 °C	34.7 °C	9.9 °C	7	1
November	23.5 °C	17.0 °C	19.8 °C	41.5 °C	10.7 °C	9	2
December	25.0 °C	18.8 °C	21.5 °C	41.2 °C	12.6 °C	14	3

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	65 mm	9	14 h/day	52 %	74 %	19 km/h	22.6 °C
February	87 mm	9	13 h/day	53 %	75 %	18 km/h	23.1 °C
March	84 mm	10	12 h/day	48 %	75 %	17 km/h	23.0 °C
April	61 mm	8	11 h/day	45 %	73 %	16 km/h	22.3 °C
May	58 mm	8	10 h/day	44 %	73 %	16 km/h	21.1 °C
June	74 mm	9	10.0 h/day	46 %	73 %	17 km/h	19.8 °C
July	41 mm	7	10 h/day	38 %	70 %	17 km/h	18.8 °C
August	36 mm	6	11 h/day	32 %	66 %	19 km/h	18.3 °C
September	44 mm	6	12 h/day	36 %	66 %	19 km/h	18.4 °C
October	55 mm	8	13 h/day	46 %	68 %	20 km/h	19.1 °C
November	73 mm	9	14 h/day	55 %	71 %	20 km/h	20.1 °C
December	67 mm	9	14 h/day	53 %	72 %	19 km/h	21.2 °C

How Newcastle compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Newcastle	26 °C	10 °C	746 mm	80
Central Coast · Australia	26 °C	10 °C	868 mm	71
Sydney · Australia	26 °C	9.0 °C	681 mm	69
Wollongong · Australia	25 °C	10 °C	880 mm	57
Canberra · Australia	27 °C	1.6 °C	562 mm	65

Planning a trip? See the best time to visit Newcastle.

QuestionsCommon questions about Newcastle’s climate

When is the best time to visit Newcastle?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, April, November sit closest to 20 °C on average, January is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Newcastle get?

In January, the warmest month, daily highs average 26 °C. About 16 days a year pass 30 °C. The highest value in the 1991–2020 record is 43 °C.

How cold does it get in winter?

Nights average 10 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Newcastle?

February, averaging 87 mm over 9 days with rain. The driest month is August with 36 mm. The year as a whole averages 746 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Newcastle rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -32.930°, 151.780° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.