Deprecation

This dataset has been deprecated since March 16, 2026 and will no longer receive updates per June 22, 2026.
Please read the deprecation notice of this dataset for how to proceed.

The newest version of this dataset can be found at: https://dataplatform.knmi.nl/dataset/maritime-forecasts-1-0

Abstract

The Marifoon forecast covers the coastal waters around the Netherlands up to 30 nautical mile offshore and the greater inland waters. This area is divided into the following districts: Vlissingen, Zierikzee, Hoek van Holland, IJmuiden, Texel, Harlingen, Rottum, Delfzijl, IJsselmeer and Markermeer. The Marifoon is issued four times a day and covers a period of 24 hours beginning at 00:00, 06:00, 12:00 and 18:00 UTC. The forecast contains wind warnings in force (≥6 Bft) and a forecast of: general synopsis, average wind direction and force, wind gusts (if  ≥ 10 knots above average wind), weather and visibility for the districts mentioned above. For the time indication, "first" or "soon" are used for a change in the weather in the first 4 hours of the time block, "later" is used to indicate a change in the last 4 hours. The data is published in two different formats: txt and xml.

Supplemental information

Visit https://www.knmi.nl/nederland-nu/maritiem/marifoon_uitleg for more information.


Metadata

Dataset name marifoon
Dataset version 1.0
Status completed
Update frequency notPlanned
File formats TXT, XML
Spatial representation type textTable
License https://creativecommons.org/licenses/by/4.0/
North bound latitude 53.7
East bound longitude 7.4
South bound latitude 50.6
West bound longitude 3.2
Dataset edition 1
Dataset manager Peter Siegmund
Maintainer KNMI Data Services
Publication date 2023-02-17
Reference system identifier EPSG4326
Dataset start time 2023-03-02
Dataset end time 2026-06-22
Identifier urn:xkdc:ds:nl.knmi::marifoon/1.0/
Lineage statement KNMI Meteorological Data distribution System (KMDS) storage
Use limitation No use limitations
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