| Températeurs minimales annuelles par station | ||||||||||||
| en degrés Celsius | ||||||||||||
| Année | Agadez | Bilma | Birni N'Konni | Gaya | Mainé Soro | Maradi aérop | N'Guigmi | Niamey | Tahoua | Tillabéri | Zinder | |
| 1951 | 19.1 | … | 21.6 | … | 19.7 | 18.7 | 19.5 | 22.2 | 21.3 | 22.8 | 20.5 | |
| 1952 | 18.6 | 18.0 | 21.4 | … | 19.7 | 18.2 | 19.9 | 21.5 | 20.7 | 21.9 | 20.6 | |
| 1953 | 18.9 | 18.2 | 20.8 | … | 19.2 | 18.7 | 19.6 | 21.1 | 20.7 | 21.6 | 20.9 | |
| 1954 | 18.7 | 18.5 | 21.5 | … | 19.6 | 19.5 | 19.5 | 21.7 | 21.4 | 22.3 | 20.5 | |
| 1955 | 18.8 | 17.9 | 21.4 | … | 19.9 | 19.5 | 19.8 | 21.2 | 21.6 | 21.1 | 20.8 | |
| 1956 | 18.9 | 17.8 | 21.5 | … | 19.6 | 19.3 | 19.6 | 21.4 | 21.8 | 22.2 | 21.1 | |
| 1957 | 19.4 | 18.7 | 21.2 | … | 19.2 | 19.6 | 19.1 | 21.4 | 21.1 | 21.8 | 20.8 | |
| 1958 | 19.4 | 18.1 | 21.3 | … | 19.4 | 19.8 | 19.8 | 22.2 | 21.6 | 22.1 | 21.4 | |
| 1959 | 18.8 | 17.5 | 20.8 | … | 19.0 | 19.5 | 18.9 | 21.6 | 21.2 | 21.4 | 21.1 | |
| 1960 | 18.9 | 17.7 | 21.5 | … | 19.9 | 19.8 | 19.7 | 22.0 | 21.5 | 21.8 | 21.5 | |
| 1961 | 17.6 | 17.2 | 21.0 | … | 19.0 | 18.7 | 18.9 | 20.7 | 19.9 | 20.3 | 20.3 | |
| 1962 | 18.9 | 18.9 | 20.2 | … | 20.1 | 19.3 | 19.7 | 22.2 | 21.6 | 22.0 | 21.5 | |
| 1963 | 20.5 | 18.5 | 21.0 | … | 20.2 | 19.1 | 20.4 | … | 22.2 | 22.3 | 21.9 | |
| 1964 | 19.1 | 18.1 | 20.7 | … | 19.6 | 19.4 | 19.8 | 21.8 | 20.8 | 21.9 | 20.9 | |
| 1965 | 18.8 | 17.9 | 20.2 | … | 19.4 | 18.8 | 18.9 | 21.4 | 20.9 | 20.9 | 20.8 | |
| 1966 | 20.1 | 17.8 | 20.7 | … | 19.8 | 19.6 | 19.6 | 21.6 | 21.5 | 22.4 | 20.6 | |
| 1967 | 20.2 | 18.4 | 20.9 | … | 19.8 | 18.9 | 19.4 | 22.2 | 21.9 | 22.0 | 20.5 | |
| 1968 | 20.3 | 17.8 | 21.1 | … | 19.6 | 19.6 | 19.9 | 21.9 | 21.9 | 22.7 | 20.6 | |
| 1969 | 21.5 | 19.2 | 21.9 | … | 20.8 | 20.4 | 20.8 | 22.6 | 22.9 | 23.7 | 21.8 | |
| 1970 | 19.8 | 17.3 | 21.2 | … | 20.0 | 19.3 | 19.8 | 22.4 | 21.7 | 23.1 | 21.2 | |
| 1971 | 20.2 | 18.4 | 21.2 | 22.5 | 19.7 | 19.2 | 19.8 | 22.4 | 22.2 | 22.9 | 21.2 | |
| 1972 | 20.7 | 18.1 | 22.1 | 22.9 | 20.6 | 20.5 | 20.9 | 23.0 | 22.5 | 23.5 | 21.9 | |
| 1973 | 20.3 | 19.0 | 22.2 | 23.6 | 21.2 | 20.6 | 21.3 | 23.1 | 22.8 | 23.5 | 21.8 | |
| 1974 | 19.9 | 17.7 | 21.6 | 22.6 | 20.0 | 19.8 | 20.4 | 22.3 | 21.8 | 22.8 | 20.8 | |
| 1975 | 19.9 | 17.4 | 21.4 | 21.9 | 20.0 | 20.2 | 19.7 | 21.5 | 21.6 | 22.8 | 20.8 | |
| 1976 | 20.8 | 18.6 | 21.7 | 22.1 | 20.4 | 20.3 | 20.4 | 21.6 | 22.1 | 22.4 | 21.2 | |
| 1977 | 19.3 | 16.5 | 21.6 | 22.3 | 19.6 | 20.0 | 19.6 | 21.5 | 21.3 | 22.9 | 21.0 | |
| 1978 | 20.8 | 18.2 | 22.3 | 22.3 | 20.3 | 19.9 | 20.4 | 22.0 | 21.9 | 23.1 | 21.7 | |
| 1979 | 20.9 | 18.6 | 21.8 | 23.1 | 20.4 | 19.9 | 20.7 | 22.0 | 22.3 | 22.9 | 21.7 | |
| 1980 | 21.1 | 18.3 | 22.1 | 23.0 | 20.7 | 20.4 | 20.7 | 22.7 | 22.1 | 23.4 | 21.8 | |
| 1981 | … | … | … | 23.7 | 20.0 | 20.3 | 20.3 | 22.0 | 21.9 | 22.8 | 21.4 | |
| 1982 | 20.7 | 18.3 | 22.1 | 22.7 | 21.0 | 21.2 | … | 22.6 | 22.4 | 23.1 | 21.8 | |
| 1983 | 20.6 | 17.9 | 22.3 | 22.8 | 20.5 | 20.9 | 20.5 | 22.3 | 22.2 | 23.6 | 21.6 | |
| 1984 | 21.3 | 17.8 | 22.6 | 22.8 | 21.3 | 21.3 | 21.0 | 23.2 | 22.6 | 23.7 | 21.9 | |
| 1985 | 20.8 | 18.1 | 22.9 | 23.2 | 21.1 | 21.2 | 21.1 | 23.4 | 22.2 | 23.9 | 21.7 | |
| 1986 | 21.3 | 18.5 | 22.3 | 23.1 | 21.1 | 20.8 | 21.1 | 23.1 | 22.7 | 23.6 | 21.7 | |
| 1987 | 21.3 | 17.7 | 22.7 | 23.4 | 21.1 | 21.4 | 20.8 | 23.3 | 29.6 | 24.1 | 21.9 | |
| 1988 | 21.7 | 12.5 | 22.3 | 22.9 | 20.8 | 21.7 | 21.1 | 22.9 | 21.9 | 22.9 | 23.3 | |
| 1989 | 20.5 | 16.8 | 21.3 | 22.0 | 20.1 | 20.1 | … | 22.1 | 21.0 | 22.7 | 21.3 | |
| 1990 | 21.9 | 17.7 | 22.3 | 23.3 | 21.5 | 21.2 | 21.1 | 22.8 | 22.7 | 23.7 | 22.3 | |
| 1991 | 22.1 | 15.4 | 22.3 | 23.2 | 21.1 | 20.9 | 22.4 | 23.5 | 22.0 | 23.4 | 22.2 | |
| 1992 | 21.1 | 18.5 | 21.8 | 22.8 | 20.8 | 20.9 | 20.3 | 23.0 | 21.9 | 23.1 | 21.5 | |
| 1993 | 21.6 | 16.9 | 22.2 | 24.3 | 21.0 | 21.0 | 21.1 | 23.1 | 22.6 | 23.4 | 22.0 | |
| 1994 | 21.3 | 17.8 | 22.4 | 22.9 | 20.5 | 21.0 | 20.9 | 22.9 | 22.6 | 23.7 | 21.9 | |
| 1995 | 21.9 | 17.8 | 22.3 | 18.4 | 20.7 | 20.8 | 20.6 | 23.1 | 22.5 | 23.5 | 21.9 | |
| 1996 | 21.7 | 17.4 | 22.2 | 23.1 | 20.9 | 20.8 | 20.7 | 23.0 | 22.5 | 23.1 | 22.1 | |
| 1997 | 22.2 | 18.3 | 22.3 | 22.8 | 21.1 | 21.4 | 21.1 | 23.5 | 22.7 | 23.6 | 22.3 | |
| 1998 | 22.3 | 18.0 | 22.8 | 23.3 | 21.6 | 21.7 | 21.3 | 23.4 | 23.1 | 23.7 | 22.5 | |
| 1999 | 21.6 | 17.9 | 22.2 | 22.9 | 21.6 | 21.1 | 20.8 | 23.1 | 22.6 | 23.2 | 22.2 | |
| 2000 | 21.3 | 17.0 | 21.9 | 22.7 | 20.8 | 20.6 | 21.2 | 22.8 | 22.1 | 23.1 | 21.6 | |
| 2001 | 21.3 | 16.7 | 22.1 | 22.9 | 21.0 | 20.7 | 20.5 | 22.6 | 22.1 | 23.2 | 21.5 | |
| 2002 | 21.6 | 18.3 | 22.3 | 23.0 | 21.4 | 21.1 | 20.7 | 23.2 | 22.4 | 23.4 | 21.4 | |
| 2003 | 21.6 | 19.2 | 22.2 | 23.2 | 21.1 | 21.1 | 20.8 | 23.2 | 22.6 | 23.4 | 21.4 | |
| 2004 | 22.0 | 17.5 | 22.6 | 23.4 | 21.5 | 21.4 | 20.8 | 23.5 | 22.8 | 23.8 | 21.7 | |
| 2005 | 22.4 | 18.5 | 23.0 | 23.7 | 22.1 | 21.8 | 21.4 | 23.7 | 23.2 | 24.3 | 22.4 | |
| 2006 | 21.9 | 17.9 | 22.6 | 23.5 | 21.7 | 21.5 | 21.7 | 23.2 | 22.7 | 23.6 | 22.2 | |
| Source : Direction de la Météorologie Nationale | ||||||||||||