IDS11045 Australian Government Bureau of Meteorology South Australia Lower South East District Forecast Issued at 9:26 pm CDT on Sunday 21 December 2025 for the period until midnight CDT Thursday 25 December 2025. Warning Information For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts. Weather Situation A broad trough of low pressure lies over the far northeast as a ridge of high pressure ridge builds over the west and south of the State during Sunday evening. The high pressure ridge extends across the entire State by early Monday and persists until Thursday. Forecast for the rest of Sunday 21 December Cloudy. Winds southwesterly 15 to 25 km/h. Forecast for Monday 22 December Cloudy. Medium chance of showers, most likely in the evening. Winds west to southwesterly 15 to 20 km/h becoming light before dawn then becoming westerly 20 to 30 km/h in the early morning. Overnight temperatures falling to around 9 with daytime temperatures reaching the low 20s. Coonawarra Shower or two. Min 7 Max 21 Mount Gambier Shower or two. Min 8 Max 20 Naracoorte Cloudy. Min 8 Max 23 Robe Shower or two. Min 12 Max 19 Fire Danger: Moderate Sun protection 8:40am to 5:20pm, UV Index predicted to reach 12 [Extreme] Forecast for Tuesday 23 December Cloudy. Slight chance of a shower in the south, near zero chance elsewhere. Winds southwesterly 20 to 30 km/h. Overnight temperatures falling to around 10 with daytime temperatures reaching between 19 and 23. Coonawarra Cloudy. Min 9 Max 21 Mount Gambier Cloudy. Min 10 Max 19 Naracoorte Cloudy. Min 10 Max 23 Robe Cloudy. Min 13 Max 19 Forecast for Wednesday 24 December Cloudy. Slight chance of a shower, most likely in the morning. Winds west to southwesterly 15 to 25 km/h tending south to southwesterly 25 to 35 km/h during the day. Overnight temperatures falling to between 9 and 12 with daytime temperatures reaching the low 20s. Coonawarra Cloudy. Min 8 Max 21 Mount Gambier Possible shower. Min 11 Max 20 Naracoorte Cloudy. Min 9 Max 23 Robe Possible shower. Min 13 Max 19 Forecast for Thursday 25 December Cloudy. Winds southerly 25 to 35 km/h. Overnight temperatures falling to around 9 with daytime temperatures reaching between 18 and 23. Coonawarra Cloudy. Min 8 Max 20 Mount Gambier Cloudy. Min 9 Max 19 Naracoorte Partly cloudy. Min 7 Max 23 Robe Cloudy. Min 12 Max 18 The next routine forecast will be issued at 4:10 am CDT Monday. * Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Copyright Commonwealth of Australia 2011, Bureau of Meteorology (ABN 92 637 533 532). Users of these web pages are deemed to have read and accepted the conditions described in the Copyright, Disclaimer, and Privacy statements (http://www.bom.gov.au/other/copyright.shtml).