Sydney 28-day Rainfall Forecast
med
high
high
high
med
low
med
high
med
med
low
low
low
med
low
low
low
high
high
low
low
| Chance of rainfall within district | |||
|---|---|---|---|
| nil < 25% |
low 25% to 50% |
med 50% to 75% |
high ≥ 75% |
Issue Notes
The hemispheric long wave pattern has remained stable in recent weeks. There are five main troughs. Currently the most significant troughs are near the longitudes of South Africa, Western Australia, eastern Australia, the south Pacific, and the Atlantic Ocean.
Summary:
Over southern and eastern Australia the cold front events with potential to bring widespread rain are now expected about 8 October to 12 October, 14 October to 18 October, and 30 October to 3 November. Rain events originating in the tropics and moving south are possible about 14 October to 18 October, 18 October to 22 October, and 5 November to 9 November.
Over Western Australia the strongest cold fronts should occur about 7 October to 11 October, 22 October to 26 October, and 31 October to 4 November.
Forecast Explanation
This forecast is produced by a multi-model ensemble consisting of dynamical atmospheric models, which are forced by the latest observed atmosphere, ocean, land and ice conditions. The models are designed to simulate features of the real atmosphere, including the daily movement of long and short wave patterns in the Southern Hemisphere.
The future probability of rain in each district is estimated using output from the multi-model ensemble, combined with historical information about the difference between the model forecasts and observed rainfall.
In this deterministic framework the skill of the forecast tends to decrease with time, however the forecasts are updated daily to provide the latest estimates of rainfall probability out to 28 days.
-
Display your Local Weather here
automatically each time you visit us:
Rotates through Temperature,
Wind, Humidity and RainUse the Search Bar above
to find your Local, and go to the Local page
Click "Set My Local"
button next to the location name
Weather News
News quiz: Will your strategies be criticised like the Trump-Biden presidential debate or will you race up the charts?
08:22 EST
Will your quiz skills be panned as much as the tactics in the first presidential debate or will you race up the charts like it's an Instagram record? Test yourself and find out.
Kununurra counts 'catastrophic' cost after freak storm slams WA town's airport
23:56 EST
Kununurra aviation operators are assessing the damage after an intense storm flipped planes and damaged buildings in the West Australian town on Wednesday afternoon.
