Jersey Met and the Coastguard are issuing an orange tide warning for 27 and 28 October.
Islanders are being asked to be cautious when travelling on coastal roads as there may be flooding.
The worst affected areas are on the south coast, with waves expected to breach the sea wall.
Motorists could see Havre Des Pas and Victoria Avenue closed as a result.
At 6:18 pm this evening (27 October) high water will reach 11.1 metres, as well as tomorrow morning (28 October) at 6:42 am.
Jersey Coastguard has reminded people in a post on social media that almost half of people who drown in the UK do not intend to go in the water.
"If you're considering going close to the coast during high tide, we recommend you dress appropriately, wear high viz, and let someone know where you are."
Cheaper parcel prices for 2026
Draft Food Law lodged to protect people with allergies
WATCH: Last Blue Islands plane leaves Jersey
Jersey pupils secure places in STEM Racing UK National Finals
Plémont puffins get a Christmas makeover
New café bar and kitchen coming to Jersey Airport
Fresh process to choose Havre des Pas Lido operator
Jersey Water has 100% compliance in all water quality standards, including PFAS
