Frequency tables 1991-2020

Frequency tables for various meteorological quantities for various KNMI observation stations, for the period 1991-2020. The frequency tables describe, among other things, wind direction, wind speed, sunshine duration, temperature and humidity.



The tables consist of hourly data, grouped into hourly blocks (columns) and classes (rows). All tables are available in four different formats. Two with distributive data, in which the associated frequency is given for each hourly block per class, and two with cumulative data, in which the sum of the frequencies of this and all the above classes is given for each hourly block per class. Of both the distributive and cumulative variants, there is one in which the frequencies are given as exact numbers of observations, and one in which the frequencies are given as a percentage of the total number of observations per hourly block.

Simple

Date (Publication)
2025-05-09
Edition

1
Citation identifier
urn:xkdc:ds:nl.knmi::frequentietabellen_1991-2020/1.0/
Status
Completed
Point of contact
Organisation name Individual name Electronic mail address Role

Koninklijk Nederlands Meteorologisch Instituut (KNMI)

opendata@knmi.nl

Point of contact
Maintenance and update frequency
Not planned

DG Discovery Properties Vocabulary 1.0

  • Climate

  • Atmospheric conditions

  • Meteorological geographical features

  • Radiation

  • Relative humidity

  • Sunshine

  • Temperature

  • Wind direction

  • Wind speed
Keywords

  • Open data
Use limitation

no use limitations
Access constraints
Other restrictions
Other constraints

https://creativecommons.org/licenses/by/4.0/deed.nl

Classification
Unclassified
Spatial representation type
Text, table
Language
English
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
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S
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Begin date
1991-01-01
End date
2020-12-31
Reference system identifier
http://www.opengis.net/def/crs/EPSG/0/4326
Distribution format
Name Version

ASCII

1.0
Distributor contact
Organisation name Individual name Electronic mail address Role

Koninklijk Nederlands Meteorologisch Instituut (KNMI)

opendata@knmi.nl

Point of contact
Transfer size
60
OnLine resource
Protocol Linkage Name

landingpage

 		https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=frequentietabellen_1991-2020&x-dataset-version=1.0

KNMI Data Platform
Hierarchy level
Dataset
Statement

KNMI Meteorological Data distribution System (KMDS)

Metadata

File identifier
bbf63b44-30ba-11f0-aeeb-3ac53960df03 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2025-07-01T10:18:20.134Z
Metadata standard name

ISO 19115
Metadata standard version

ISO 19115:2003 NL Kernset 1.3 KNMI 2.1.0
Metadata author
Organisation name Individual name Electronic mail address Role

Koninklijk Nederlands Meteorologisch Instituut (KNMI)

opendata@knmi.nl

Point of contact
Other language
Language Character encoding
Dutch; Flemish
English UTF8
 
 

Overviews

Spatial extent

N
S
E
W
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Keywords



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