Adelaide is in for a classic spring week of contrasts, with cool and breezy conditions easing today before a run of warmer weather builds across the city, then gives way to showers and a possible thunderstorm by mid to late week. For locals, that means a fairly calm Sunday, a sharp jump in temperatures by Tuesday, and then a wetter turn just in time for the start of October.
Today will stay partly cloudy across Adelaide, with only a slight chance of a brief shower about the hills and southern suburbs during the morning before conditions clear up. Tops are only expected to reach 21 degrees in the city, with easterly winds easing through the middle of the day. Monday brings a noticeable warm-up, climbing to 28 degrees under partly cloudy skies as easterly winds tend northeasterly. It should stay dry, making it the pick for anyone planning to get outdoors before the weather becomes more unsettled.
By Tuesday, Adelaide heats up further, with the temperature forecast to reach 32 degrees after a mild overnight low of 20. Partly cloudy skies will stick around, but the bigger story will be the wind, with northerly to northeasterly gusts strengthening before a south to southwesterly change moves through in the evening. That change sets the scene for a much cooler Wednesday, when the mercury drops back to 23 degrees. Cloud will increase, showers become more likely during the afternoon and evening, and there is also the chance of a thunderstorm later in the day.
The wettest part of the week looks set to arrive on Thursday. Adelaide is forecast to stay cloudy with a very high chance of showers, possible rainfall of 2 to 9 millimetres, and the chance of a thunderstorm. Temperatures will remain on the cool side, with a top of 21 degrees. From there, conditions begin to settle again heading into the weekend. Friday should see just a slight chance of a morning shower before skies clear to a mostly sunny afternoon and a top of 19 degrees. Saturday remains partly cloudy with a slight chance of a later shower, and another cool spring day is expected with a maximum of 19 degrees after a crisp morning low of 8.
Across the rest of South Australia, conditions are following a similar pattern, though the shift will be more dramatic away from the southeast. Southern coastal districts may see an early shower today before drying out, while the far northwest has a chance of a thunderstorm. Through Monday and Tuesday, much of the state will turn warmer, with temperatures above to well above average and the hottest conditions across northern districts. Showers and thunderstorms are expected to begin in the far west late Monday, then extend further across western parts, the Eyre Peninsula and southern coasts by late Tuesday. On Wednesday, showers and thunderstorms are forecast to spread across agricultural areas, the North West Pastoral and West Coast, with falls generally light but higher totals possible in the far west, Lower Eyre Peninsula and Kangaroo Island. Coastal communities can also expect fresh winds at times, particularly through exposed southern waters, while Adelaide’s metropolitan waters remain relatively moderate before cloud and shower activity increases midweek.
Adelaide 7-Day Summary Forecast
Sunday: Max 21°C – Partly cloudy.
Monday: Min 12°C, Max 28°C – Partly cloudy.
Tuesday: Min 20°C, Max 32°C – Partly cloudy.
Wednesday: Min 15°C, Max 23°C – Shower or two.
Thursday: Min 14°C, Max 21°C – Showers.
Friday: Min 10°C, Max 19°C – Mostly sunny.
Saturday: Min 8°C, Max 19°C – Partly cloudy.
