Strongest positive SAM in three years – what does this mean for Australia's weather?
The Southern Annular Mode (SAM) has just reached its highest value since 2023.
ELDERS NEWS
The Southern Annular Mode (SAM) has just reached its highest value since 2023.
Three Australian cities all shivered through their coldest temperatures of 2026 to date overnight, in the cool, crisp air in the wake of a cold front.
This morning, Adelaide Airport experienced its coldest temperature of the year so far, with the mercury falling to 2.
Adelaide has benefited from healthy rainfall over the past few weeks, with only 4 days remaining dry so far in June.
Winter has failed to show up in Sydney so far this month, with the city registering its longest run of June days over 20°C in close to 170 years of records.
Wintry weather will finally return to eastern Australia after a remarkable run of June warmth.
This weekend, June 20-21, will be the darkest weekend of 2026 in Australia based on the amount of time between sunset and sunrise.
An unseasonable weather pattern has dominated the first half of June across southeastern Australia, with average temperatures much closer to late autumn than early winter.
El Niño was officially declared by the BoM on Tuesday, June 16.
A northwest cloudband will cause heavy rain and thunderstorms over parts of South Australia on Wednesday, with flash flooding possible in some parts of the state.