Extreme heat can cause exhaustion, heatstroke, and dehydration, with older people and children particularly at risk, the government said.
Temperatures could go as high as 31°C on Sunday.
Steps Islanders can take to stay cool during the hot spell include:
-
Avoid going outside during the hottest time of day 11am to 3pm
-
Leave strenuous activities for later on in the day when it is cooler
-
Take cold baths and showers
-
Drink plenty of water and avoid coffee and alcohol
-
Keep your home cool by closing curtains, opening windows, and using fans
-
Wear a hat and loose light clothing, try to stay in the shade and carry water with you
-
Wear sun cream when going outside
The latest weather forecast can be found here.