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Perth weather

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EuropeanECMWF
26°
Clear
Feels 29° · Wind 1 mph · Humidity 30%
AmericanNOAA GFS
28°
Clear
Feels 29° · Wind 2 mph · Humidity 21%
GermanDWD ICON
26°
Clear
Feels 29° · Wind 1 mph · Humidity 33%

Latest for Perth: European (ECMWF): 26° Clear · American (NOAA GFS): 28° Clear · German (DWD ICON): 26° Clear.

The weather map: all three models at once

European, American, German side by side around Perth and nearby towns.Live rain radar →
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Hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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10-day forecast, out to 14 days

where the models agree, and where they split

Heading to Perth? Perth, Australia, sits at 32.0°S in a subtropical climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast Perth right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a city break, the rain hours below tell you which days to plan indoors.

Best time to visit Perth

The most comfortable time to visit Perth is usually April, May, June and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest July rain is behind you.

Perth weather by month

what to expect in Perth through the year, 1991-2020 normals, Perth Metro (WMO)

Here is Perth's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Perth by season.

Jan
31°
18°
Hot
Feb
32°
18°
Hot
Mar
30°
17°
Hot
Apr
26°
14°
Warm
May
22°
10°
Warm
Jun
20°
9°
Mild
Jul
18°
8°
Mild
Wettest
Aug
19°
8°
Mild
Sep
20°
10°
Mild
Oct
24°
12°
Warm
Nov
27°
14°
Warm
Dec
29°
16°
Hot

Perth compared with London

30-year averages: daytime highs month by month, rain and sunlight

Warmer through the year

+9°C

average daytime high: Perth 25°C, London 16°C

Rain over a year

+18%

Perth 724 mm, London 615 mm

Sunlight vs a clear sky

85% vs 63%

solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)

PerthLondonaverage daytime high, °C, 1991-2020
January, London: 9°CJanuary, Perth: 31°C (+22°C)February, London: 9°CFebruary, Perth: 32°C (+23°C)March, London: 12°CMarch, Perth: 30°C (+18°C)April, London: 15°CApril, Perth: 26°C (+11°C)May, London: 18°CMay, Perth: 22°C (+4°C)June, London: 21°CJune, Perth: 20°C (−1°C)July, London: 24°CJuly, Perth: 18°C (−6°C)August, London: 23°CAugust, Perth: 19°C (−4°C)September, London: 20°CSeptember, Perth: 20°C (±0°C)October, London: 16°COctober, Perth: 24°C (+8°C)November, London: 12°CNovember, Perth: 27°C (+15°C)December, London: 9°CDecember, Perth: 29°C (+20°C)

On 30-year averages Perth runs 9°C warmer than London, with every month between −6°C and +23°C. Over a year it gets 18% more rain than London.

Month by month in numbers
MonthPerthLondonDifferenceSunlight, PerthSunlight, London
January31°C9°C+22°C91%58%
February32°C9°C+23°C91%59%
March30°C12°C+18°C89%63%
April26°C15°C+11°C84%67%
May22°C18°C+4°C82%65%
June20°C21°C−1°C78%66%
July18°C24°C−6°C77%67%
August19°C23°C−4°C78%66%
September20°C20°C±0°C81%68%
October24°C16°C+8°C86%62%
November27°C12°C+15°C89%59%
December29°C9°C+20°C91%58%

Daytime highs and lows on this page are 1991-2020 averages. Perth: station normals from Perth Metro (WMO), rain included. London: station normals from London (WMO), rain included. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. London stands in for the UK here; other cities have their own climate tables.

Common questions

When is the best time to visit Perth?
The most comfortable time to visit Perth is usually April, May, June and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest July rain is behind you.
Will it rain in Perth during my trip?
Rain is where forecasts disagree most. Instead of trusting one app, the comparison above lines up the European, American and German models for Perth - check your dates and look for the days they agree; those are the ones you can plan around.
Which forecast is most accurate for Perth?
For destinations abroad we compare three open global models (ECMWF, GFS and ICON) and show you where they disagree, so you can judge the confidence yourself.
How much warmer is Perth than London?
On 30-year averages (1991-2020) the daytime high in Perth is about 9°C warmer than in London (25°C against 16°C), with the monthly gap between -6°C and 23°C.

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