Saturday: Variable about 10 knots. Seas: Below 1 metre. Swell: Southwesterly 2 metres. Sunday: Variable about 10 knots becoming west to northwesterly 15/20 knots in the evening then becoming westerly 20/30 knots in the late evening. Seas: Below 1 metre, increasing to 1/1.5 metres by early evening. Swell: Southwesterly 2/2.5 metres. Weather: The chance of thunderstorms offshore late in the evening. Outlook Monday: Westerly 25/30 knots increasing to 40 knots before turning southerly 20/30 knots in the afternoon. Seas: 2/3 metres, increasing to 3/4 metres during the morning, then decreasing below 3 metres during the afternoon. Swell: Southwesterly 2/3 metres, increasing to 4/6 metres before dawn. Weather: Isolated thunderstorms until evening. Outlook Tuesday: Southerly 15/25 knots turning southeasterly 10/15 knots during the day. Seas: 1/2 metres, decreasing below 1 metre during the morning. Swell: Southwesterly 3/4 metres, decreasing to 2.5/3 metres during the morning.Issued Sat 16:01 WST
17:01 EST Sydney's offshore Sea Surface Temperatures (SST's) have remained above 21 degrees for the last four days.