Temperatures could reach 38 degrees inland by Thursday.
A heatwave warning is in force for the region, with temperatures expected to reach 38 degrees inland by Thursday.
Cooling centres will open in libraries and community halls from Wednesday. Health officials are asking people to check on older neighbours and to avoid the midday sun.
Water companies have asked customers to avoid using hosepipes until the heat breaks.
Sandbags and pumps are being moved to towns along the coast.
Some farms are switching to crops that ripen faster or cope better with heat.
The buses charge overnight at the Northgate depot, which now has its own solar roof.
The map shows the delta has moved 300 metres seaward in 50 years.
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