Afternoon Showers and Southerly Shifts: Adelaide’s Midweek Weather Shake-Up

Midweek Weather Outlook

Adelaide residents should prepare for a noticeable shift in conditions this Wednesday, 11 February 2026. While the day is expected to start with the typical warmth of a South Australian summer, a developing weather system will bring a medium chance of showers and a significant wind change by the middle of the day. Forecasters are predicting a top temperature of 30°C, following a relatively warm overnight minimum of 23°C.

Morning Conditions and the Midday Shift

The morning hours will likely be the most stable part of the day, featuring partly cloudy skies and light winds. Early commuters can expect northwest to northeasterly winds blowing at 20 to 30 km/h. However, a transition is expected around midday. The breeze will shift significantly, tending southerly and increasing in strength to between 25 and 35 km/h. This shift marks the arrival of cooler air from the coast, which will gradually temper the morning heat but also bring increased cloud cover.

Afternoon and Evening Showers

By the afternoon, the probability of precipitation rises. There is a 60% to 70% chance of rain, with showers most likely to impact the metropolitan area during the late afternoon and into the evening. Rainfall totals are expected to be modest, with predictions ranging from 1 to 5 mm. While this is unlikely to cause major disruptions, motorists are advised to be cautious of slippery road conditions during the evening peak. The evening is expected to remain overcast as the shower activity tapers off late into the night.

UV Alerts and Fire Safety

Despite the predicted showers, solar protection is critical for anyone outdoors during the first half of the day. The UV Index is forecast to reach an 'Extreme' level of 12. Health authorities recommend full sun protection measures between 9:20 am and 5:30 pm. Additionally, while the Adelaide metropolitan area currently holds no specific fire rating, the Mount Lofty Ranges are under a 'High' fire danger warning. Residents in the hills should remain vigilant and stay informed of any updates to local fire permits or restrictions.

Summary of Predictions

• Temperature: Minimum of 23°C; Maximum of 30°C.
• Rainfall: 60-70% chance of showers, primarily in the afternoon and evening; 1-5 mm possible.
• Wind: 20-30 km/h NW/NE in the morning, shifting to 25-35 km/h Southerly by midday.
• UV Index: Extreme (12); protection recommended 9:20 am – 5:30 pm.
• Hazards: High fire danger in the Mount Lofty Ranges.