Marlborough-Nelson Marine Radio broadcast the most recent weather forecast on:
Channel 01, 04, 60, 63, 65 and 66 starting at 0835, 1135, 1335 and 1735
Maritime Radio transmit the weather at 0533, 0733, 1033, 1333, 1733 and 2133 - listen on Channel 16 for a general broadcast and then go to the appropriate channel for your area.
If you miss a broadcast then the Marlborough-Nelson Radio operators are happy to give updates on request. Please call them and tell them which sea area forecasts or information you require.