Sweers Island's climate could best be described as 'Dry Tropics'. The average daily maximum temperature ranges from 24C in June/July to 35C in December. The most pleasant times to visit the Gulf Country are from early April until mid October. During this time, south-easterly winds prevail and can sometimes blow up to 25 knots in the morning and drop off to flat calm in the afternoon. These winds can be chilly at night, so from May to September it is advisable to bring at least a warm jacket & jeans for evenings. The Morning Glory Roll Cloud is often seen in this area during September-October.
Local Radar Picture (Mornington Island): CLICK HERE
Four Day Weather Forecast: CLICK HERE
Local Weather Observations: CLICK HERE
Gulf waters are dangerous as conditions can change rapidly. Glass calm at 5pm can turn to 25 knot gale conditions by 10pm. If you are planning to travel to Sweers Island in a private boat please ensure that the skipper is experienced in open waters, and that all regulation radios, safety gear and navigation equipment are carried. Please check BOM website for weather conditions and please phone us before departure to establish a SARtime. FATALITIES HAVE OCCURED IN THIS AREA.