Channel Islands - Weather

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Summer weather is generally settled, but during the rest of the year, it can change very quickly. The winds during summer alternate between NW and NE. At other times, SW winds are more frequent and this is also the direction of most gales. More than strong winds, the main danger in the islands is the extremely strong tidal streams, the notorious Alderney Race reaching 8 knots on occasions. Other hazards are concealed rocks and poor visibility.

Guernsey Coastguard

VHF Channel 16 and Channel 20

Marine Safety Information Broadcasts will be announced by Guernsey Coastguard on VHF Channel 16 before being broadcast in full on VHF Channel 20.  The full Channel Islands shipping forecast will not be included as part of the MSI broadcast for Guernsey as this is undertaken by Jersey Coastguard for the whole Channel Islands sea area.

The Channel Islands shipping forecast will be available on request to mariners by contacting Guernsey Coastguard .

The MSI will generally be broadcast at the following times (All times in UTC/GMT):

  • 01.33, 05.33, 09.33, 13.33, 17.33, 21.33.

Jersey Coastguard

VHF Channel 25 and Channel 82

Shipping Forecast (and any gale or navigational warnings) at 06:45, 07:45, 08:45, 12:45, 18:45, 22:45. Gale Warnings, on receipt and at 03:07, 09:07, 15:07,21:07.

Wind information (speed and guests at St Helier Port Control) transmitted on VHF Channel 18 every two minutes.

Other Weather Links:

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Channel Islands was last updated 5 months ago.

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  1. September 29, 2021 at 10:27 AM
    michell says:

    Major works to replace the infrastructure of St Helier Marina are commencing 13th September 2021.
    The works will be ongoing until summer 2022.

    Partial closure of marina 13th September – 13th October 2021.

    MARINA CLOSED – There will be no vessel or pedestrian access to the marina from 13th October – until further notice.