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Convention of the World Meteorological Organization
PartiesTooltip Parties with a link have a reservation.
Party
Signature
RatificationTooltip S=Signature without reservation or requirement of ratification R=Ratification, Acceptance,
Approval or Notification A=Accession Su=Succession NK=Not Known
Entry into force
Renunciation
Termination
Afghanistan
11-09-1956 (A)
11-10-1956
Albania
29-07-1957 (A)
28-08-1957
Algeria
04-04-1963 (A)
04-05-1963
Andorra
17-10-2018 (A)
16-11-2018
Angola
16-03-1977 (A)
15-04-1977
Antigua and Barbuda
16-11-1988 (A)
16-12-1988
Argentina
11-10-1947
02-01-1951 (R)
01-02-1951
Armenia
16-09-1992 (A)
16-10-1992
Australia
11-10-1947
14-03-1949 (R)
23-03-1950
Austria
23-02-1955 (A)
25-03-1955
Azerbaijan
27-12-1993 (A)
26-01-1994
Bahamas
29-11-1973 (A)
29-12-1973
Bahrain
21-04-1980 (A)
21-05-1980
Bangladesh
24-08-1973 (A)
23-09-1973
Barbados
22-03-1967 (A)
21-04-1967
Belarus
12-04-1948 (A)
23-03-1950
Belgium
11-10-1947
02-02-1951 (R)
04-03-1951
Belize
25-05-1982 (A)
24-06-1982
Benin
14-04-1961 (A)
14-05-1961
Bhutan
11-02-2003 (A)
13-03-2003
Bolivia
15-05-1954 (A)
14-06-1954
Bosnia and Herzegovina
01-06-1994 (A)
01-07-1994
Botswana
16-10-1967 (A)
15-11-1967
Brazil
11-10-1947
15-03-1950 (R)
14-04-1950
Brunei
26-11-1984 (A)
26-12-1984
Bulgaria
12-03-1952 (A)
11-04-1952
Burkina Faso
31-10-1960 (A)
30-11-1960
Burundi
30-10-1962 (A)
29-11-1962
Cabo Verde
21-10-1975 (A)
20-11-1975
Cambodia
08-11-1955 (A)
08-12-1955
Cameroon
17-12-1960 (A)
16-01-1961
Canada
11-10-1947
28-07-1950 (R)
27-08-1950
Central African Republic
28-06-1961 (A)
28-07-1961
Chad
02-02-1961 (A)
04-03-1961
Chile
11-10-1947
09-05-1957 (R)
08-06-1957
China
11-10-1947
27-04-1973 (R)
27-05-1973
Colombia
11-10-1947
05-01-1962 (R)
04-02-1962
Comoros
19-03-1976 (A)
18-04-1976
Cook Islands
18-10-1995 (A)
17-11-1995
Costa Rica
16-12-1960 (A)
15-01-1961
Côte d'Ivoire
31-10-1960 (A)
30-11-1960
Croatia
09-10-1992 (A)
08-11-1992
Cuba
11-10-1947
04-03-1952 (R)
03-04-1952
Cyprus
11-04-1963 (A)
11-05-1963
Czech Republic
25-01-1993 (A)
24-02-1993
Czechoslovakia (<01-01-1993)
11-10-1947
26-07-1949 (R)
23-03-1950
Democratic People's Republic of Korea
27-05-1975 (A)
26-06-1975
Democratic Republic of the Congo
05-11-1960 (A)
05-12-1960
Denmark
11-10-1947
10-07-1951 (R)
09-08-1951
Djibouti
30-06-1978 (A)
30-07-1978
Dominica
21-02-1980 (A)
22-03-1980
Dominican Republic
11-10-1947
15-09-1949 (R)
23-03-1950
Ecuador
11-10-1947
07-06-1951 (R)
07-07-1951
Egypt
11-10-1947
10-01-1950 (R)
23-03-1950
El Salvador
27-05-1955 (A)
26-06-1955
Eritrea
08-07-1993 (A)
07-08-1993
Estonia
21-08-1992 (A)
20-09-1992
Eswatini
02-11-1982 (A)
02-12-1982
Ethiopia
03-12-1953 (A)
02-01-1954
Federated States of Micronesia
20-09-1995 (A)
20-10-1995
Fiji
18-03-1980 (A)
17-04-1980
Finland
11-10-1947
07-01-1949 (R)
23-03-1950
France
11-10-1947
05-12-1949 (R)
23-03-1950
Gabon
05-06-1961 (A)
05-07-1961
Gambia, The
02-10-1978 (A)
01-11-1978
Georgia
01-09-1993 (A)
01-10-1993
Germany
10-06-1954 (A)
10-07-1954
Ghana
06-05-1957 (A)
05-06-1957
Greece
11-10-1947
20-01-1950 (R)
23-03-1950
Guatemala
11-10-1947
21-03-1952 (R)
20-04-1952
Guinea
27-03-1959 (A)
26-04-1959
Guinea-Bissau
15-12-1977 (A)
14-01-1978
Guyana
22-11-1966 (A)
22-12-1966
Haïti
14-08-1951 (A)
13-09-1951
Honduras
10-10-1960 (A)
09-11-1960
Hungary
11-10-1947
15-02-1951 (R)
17-03-1951
Iceland
11-10-1947
16-01-1948 (R)
23-03-1950
India
11-10-1947
27-04-1949 (R)
23-03-1950
Indonesia
16-11-1950 (A)
16-12-1950
Iran
30-09-1959 (A)
30-10-1959
Iraq
21-02-1950 (A)
23-03-1950
Ireland
11-10-1947
14-03-1950 (R)
13-04-1950
Israel
30-09-1949 (A)
23-03-1950
Italy
11-10-1947
09-01-1951 (R)
08-02-1951
Jamaica
29-05-1963 (A)
28-06-1963
Japan
11-08-1953 (A)
10-09-1953
Jordan
11-07-1955 (A)
10-08-1955
Kazakhstan
05-05-1993 (A)
04-06-1993
Kenya
02-06-1964 (A)
02-07-1964
Kiribati
26-03-2003 (A)
25-04-2003
Kuwait
01-12-1962 (A)
31-12-1962
Kyrgyzstan
20-07-1994 (A)
19-08-1994
Laos
01-06-1955 (A)
01-07-1955
Latvia
15-05-1992 (A)
14-06-1992
Lebanon
22-12-1948 (A)
23-03-1950
Lesotho
03-08-1979 (A)
02-09-1979
Liberia
07-02-1974 (A)
09-03-1974
Libya
29-12-1955 (A)
28-01-1956
Lithuania
03-06-1992 (A)
03-07-1992
Luxembourg
29-10-1952 (A)
28-11-1952
Madagascar
15-12-1960 (A)
14-01-1961
Malawi
15-02-1965 (A)
17-03-1965
Malaysia
19-05-1958 (A)
18-06-1958
Maldives
01-06-1978 (A)
01-07-1978
Mali
11-11-1960 (A)
11-12-1960
Malta
28-12-1976 (A)
27-01-1977
Mauritania
23-01-1962 (A)
22-02-1962
Mauritius
17-07-1969 (A)
16-08-1969
Mexico
11-10-1947
27-05-1949 (R)
23-03-1950
Moldova
21-11-1994 (A)
21-12-1994
Monaco
09-04-1996 (A)
09-05-1996
Mongolia
04-04-1963 (A)
04-05-1963
Montenegro
06-12-2006 (Su)
03-06-2006
Morocco
03-01-1957 (A)
02-02-1957
Mozambique
21-06-1976 (A)
21-07-1976
Myanmar
11-10-1947
19-08-1949 (R)
23-03-1950
Namibia
06-02-1991 (A)
08-03-1991
Nauru
16-04-2019 (A)
16-05-2019
Nepal
12-08-1966 (A)
11-09-1966
Netherlands, the Kingdom of the
11-10-1947
12-09-1951 (R)
12-10-1951
New Zealand
11-10-1947
02-04-1948 (R)
23-03-1950
Nicaragua
27-02-1959 (A)
29-03-1959
Niger
28-10-1960 (A)
27-11-1960
Nigeria
30-11-1960 (A)
30-12-1960
Niue
31-05-1996 (A)
30-06-1996
North Macedonia
01-06-1993 (A)
01-07-1993
Norway
11-10-1947
09-12-1948 (R)
23-03-1950
Oman
03-01-1975 (A)
02-02-1975
Pakistan
11-10-1947
11-04-1950 (R)
11-05-1950
Panama
12-09-1967 (A)
12-10-1967
Papua New Guinea
15-12-1975 (A)
14-01-1976
Paraguay
11-10-1947
15-09-1950 (R)
15-10-1950
Peru
30-12-1949 (A)
23-03-1950
Philippines
11-10-1947
05-04-1949 (R)
23-03-1950
Poland
11-10-1947
16-05-1950 (R)
15-06-1950
Portugal
11-10-1947
15-01-1951 (R)
14-02-1951
Qatar
04-04-1975 (A)
04-05-1975
Republic of Korea, the
15-02-1956 (A)
16-03-1956
Republic of the Congo
21-11-1960 (A)
21-12-1960
Romania
18-08-1948 (A)
23-03-1950
Russian Federation
02-04-1948 (A)
23-03-1950
Rwanda
04-02-1963 (A)
06-03-1963
Saint Lucia
02-03-1981 (A)
01-04-1981
Samoa
11-07-1995 (A)
10-08-1995
São Tomé e Principe
23-11-1976 (A)
23-12-1976
Saudi Arabia
26-02-1959 (A)
28-03-1959
Senegal
01-11-1960 (A)
01-12-1960
Serbia
21-02-2001 (A)
23-03-2001
Seychelles
15-02-1977 (A)
17-03-1977
Sierra Leone
30-03-1962 (A)
29-04-1962
Singapore
24-01-1966 (A)
23-02-1966
Slovakia
11-02-1993 (A)
13-03-1993
Slovenia
20-08-1992 (A)
19-09-1992
Solomon Islands
06-05-1985 (A)
05-06-1985
Somalia
02-03-1964 (A)
01-04-1964
South Africa
11-10-1947
17-01-1950 (R)
23-03-1950
South Sudan
14-11-2012 (A)
14-12-2012
Spain
27-02-1951 (A)
29-03-1951
Sri Lanka
23-05-1951 (A)
22-06-1951
Sudan
03-12-1956 (A)
02-01-1957
Suriname
26-07-1976 (A)
25-08-1976
Sweden
11-10-1947
10-11-1948 (R)
23-03-1950
Switzerland
11-10-1947
23-02-1949 (R)
23-03-1950
Syria
16-07-1952 (A)
15-08-1952
Tajikistan
10-08-1993 (A)
09-09-1993
Tanzania
14-09-1962 (A)
14-10-1962
Thailand
11-10-1947
11-07-1949 (R)
23-03-1950
Togo
28-10-1960 (A)
27-11-1960
Tonga
25-02-1996 (A)
26-03-1996
Trinidad and Tobago
01-02-1963 (A)
03-03-1963
Tunisia
22-01-1957 (A)
21-02-1957
Türkiye
11-10-1947
05-08-1949 (R)
23-03-1950
Turkmenistan
04-12-1992 (A)
03-01-1993
Tuvalu
23-08-2012 (A)
22-09-2012
Uganda
15-03-1963 (A)
14-04-1963
Ukraine
12-04-1948 (A)
23-03-1950
United Arab Emirates
17-12-1986 (A)
16-01-1987
United Kingdom
11-10-1947
14-12-1948 (R)
23-03-1950
United States of America
11-10-1947
04-05-1949 (R)
23-03-1950
Uruguay
11-10-1947
11-01-1951 (R)
10-02-1951
Uzbekistan
23-12-1992 (A)
22-01-1993
Vanuatu
24-06-1982 (A)
24-07-1982
Venezuela
16-06-1950 (A)
16-07-1950
Vietnam
08-07-1975 (A)
07-08-1975
Yemen
28-01-1969 (A)
27-02-1969
Yugoslavia (< 25-06-1991)
11-10-1947
07-12-1948 (R)
23-03-1950
Zambia
28-12-1964 (A)
27-01-1965
Zimbabwe
12-01-1981 (A)
11-02-1981
Extensions
Australia
Extended to
Entry into force
Termination
Australian Antarctic Territory
16-07-1955
Norfolk Island
25-11-1950
China
Extended to
Entry into force
Termination
Hong Kong SAR
01-07-1997
Macao SAR
20-12-1999
Denmark
Extended to
Entry into force
Termination
Greenland
24-02-1952
France
Extended to
Entry into force
Termination
French Guiana
23-03-1950
French Polynesia
23-03-1950
New Caledonia
23-03-1950
Réunion
23-03-1950
Saint Pierre and Miquelon
19-05-1971
Portugal
Extended to
Entry into force
Termination
Macao (<20-12-1999)
14-02-1951
20-12-1999
United Kingdom
Extended to
Entry into force
Termination
Anguilla
24-10-1953
Bermuda
23-03-1950
British Virgin Islands
24-10-1953
Cayman Islands
24-10-1953
Falkland Islands
23-03-1950
Gibraltar
23-03-1950
Hong Kong (< 01-07-1997)
23-03-1950
01-07-1997
Montserrat
24-10-1953
Turks and Caicos Islands
24-10-1953
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