Iran vs Yemen
Iran vs Yemen: Tropical nights
Tropical nights in 2014: 90.8 nights in Iran and 175.8 nights in Yemen, in the CMIP6 climate models’ median run. In 2014 the value was higher in Yemen, by 85 nights, or 1.94 times that in Iran.
nights a year · CMIP6
What the numbers say
- Yemen has been higher in every year both have figures for since 1950.
- The CMIP6 model median (SSP2-4.5, middle of the road) puts Iran at 124.4 nights and Yemen at 225.7 nights in 2100.
Every year
nights a year · CMIP6
| Year | Iran | Yemen |
|---|---|---|
| 2014 | 90.8 | 175.8 |
| 2013 | 90.6 | 176.9 |
| 2012 | 90.3 | 178.4 |
| 2011 | 89.8 | 178.3 |
| 2010 | 87 | 174.9 |
| 2009 | 87.2 | 173.4 |
| 2008 | 88 | 174 |
| 2007 | 87.9 | 173.9 |
| 2006 | 88.2 | 173.6 |
| 2005 | 87.1 | 172.4 |
| 2004 | 86.4 | 174.3 |
| 2003 | 85.9 | 173.5 |
| 2002 | 87.7 | 171.8 |
| 2001 | 86.6 | 172.7 |
| 2000 | 86.5 | 167.9 |
| 1999 | 85.1 | 168.6 |
| 1998 | 83.8 | 168.7 |
| 1997 | 84.3 | 168.8 |
| 1996 | 82.4 | 166 |
| 1995 | 81.6 | 164.3 |
| 1994 | 80.6 | 161.6 |
| 1993 | 77.7 | 161.2 |
| 1992 | 77 | 157.2 |
| 1991 | 81.9 | 166.5 |
| 1990 | 83.1 | 168.3 |
| 1989 | 81.7 | 164.3 |
| 1988 | 80.4 | 163.7 |
| 1987 | 79.8 | 160.7 |
| 1986 | 80.1 | 162.3 |
| 1985 | 79.7 | 158.2 |
| 1984 | 78.8 | 159.8 |
| 1983 | 75.5 | 155.4 |
| 1982 | 77.9 | 161.5 |
| 1981 | 80.2 | 161.7 |
| 1980 | 79.4 | 158.5 |
| 1979 | 80.2 | 160.1 |
| 1978 | 78.1 | 158.9 |
| 1977 | 77.8 | 161.2 |
| 1976 | 77.2 | 157.5 |
| 1975 | 76.6 | 156.9 |
| 1974 | 76.4 | 157.8 |
| 1973 | 76.9 | 158.1 |
| 1972 | 77.4 | 157.5 |
| 1971 | 75 | 156.7 |
| 1970 | 75.3 | 156.9 |
| 1969 | 75.6 | 157.5 |
| 1968 | 76.3 | 154.5 |
| 1967 | 76.1 | 152.1 |
| 1966 | 75.5 | 155.1 |
| 1965 | 75.3 | 153.5 |
| 1964 | 75.3 | 154 |
| 1963 | 76.4 | 154.7 |
| 1962 | 77.5 | 155.9 |
| 1961 | 77.7 | 158.7 |
| 1960 | 77.6 | 160.1 |
| 1959 | 76.8 | 156.1 |
| 1958 | 78.4 | 158.5 |
| 1957 | 78.2 | 158.1 |
| 1956 | 76.2 | 156.2 |
| 1955 | 76.5 | 157.4 |
| 1954 | 77.6 | 156.1 |
| 1953 | 77.3 | 155.1 |
| 1952 | 78.2 | 157 |
| 1951 | 76.6 | 155.4 |
| 1950 | 77.7 | 157.6 |
CMIP6 model median (SSP2-4.5, middle of the road) · 2015–2100
| Year | Iran | Yemen |
|---|---|---|
| 2015 | 94.482.7–106 | 180.9163.8–197.8 |
| 2016 | 94.183.1–105.3 | 178.4162.7–194.6 |
| 2017 | 93.981.7–104 | 179.8162.3–196.8 |
| 2018 | 94.183–106.3 | 183.2165.3–198.6 |
| 2019 | 95.183.4–105.8 | 179162–200.4 |
| 2020 | 95.985.5–107.5 | 181.5163.1–195.9 |
| 2021 | 97.286–107.7 | 184.6170.2–202.6 |
| 2022 | 96.285.2–108.3 | 184.1167.5–203.7 |
| 2023 | 98.485.7–110.6 | 186.8170.1–200.5 |
| 2024 | 9885.1–110.5 | 185.3168.8–206.4 |
| 2025 | 98.787.2–110.5 | 186.5164.7–211.8 |
| 2026 | 99.186.7–111.7 | 187.8167.9–208.8 |
| 2027 | 100.288.7–112.1 | 186.5167.9–205.3 |
| 2028 | 99.686.2–111.6 | 188.2172.3–203.6 |
| 2029 | 99.386.7–109.9 | 193175.7–211.5 |
| 2030 | 100.889.8–111.6 | 189.4171.6–207.4 |
| 2031 | 102.990.1–114.8 | 193.4176.6–211.5 |
| 2032 | 101.289–113.9 | 192.7173.2–213.2 |
| 2033 | 102.889.9–115.1 | 191.2173–209.1 |
| 2034 | 104.690.7–117.3 | 193.1172.1–214.9 |
| 2035 | 10592.1–116.2 | 193.1174.5–214.1 |
| 2036 | 103.591.4–115.2 | 194177.6–213.5 |
| 2037 | 10693.1–119.4 | 195.9180.3–212.8 |
| 2038 | 105.993.2–116.5 | 197.6178.5–217.1 |
| 2039 | 104.392.9–116.6 | 194.8179.8–215.4 |
| 2040 | 105.592.3–118.4 | 196.4178.8–220.1 |
| 2041 | 104.892.5–116.4 | 198.5176.5–216.9 |
| 2042 | 107.793.4–120.7 | 197.3174.4–225.8 |
| 2043 | 10692.9–118.8 | 198.3179.3–221 |
| 2044 | 106.893.6–121.2 | 198.7180.5–221.9 |
| 2045 | 108.795.1–121.8 | 199.8181.6–220.3 |
| 2046 | 109.296.1–121.9 | 202.2181.7–229.3 |
| 2047 | 110.596.9–123.3 | 205182.7–229.8 |
| 2048 | 111.498.6–124 | 207.4188.8–229.5 |
| 2049 | 11095.7–123.4 | 203.6186.1–222.5 |
| 2050 | 112.199.6–125.1 | 202.8186.2–226.3 |
| 2051 | 111.797.6–124.1 | 204.6185.1–229.1 |
| 2052 | 11298.3–126 | 207.2186.9–227.7 |
| 2053 | 111.597.5–124 | 203.9186.1–226.9 |
| 2054 | 111.899–126.3 | 208.4188.3–234.9 |
| 2055 | 114.6101.4–128 | 208.3190.7–228 |
| 2056 | 113.1100.2–126.2 | 208.6188.5–236.3 |
| 2057 | 113.899.9–128.9 | 208.4190.1–233.1 |
| 2058 | 114.2100–127.7 | 207.2184.7–236 |
| 2059 | 113.498.9–126.3 | 213.3191.6–239.3 |
| 2060 | 116.3100.3–129.5 | 215194.1–235.3 |
| 2061 | 115100.5–127.6 | 209.8189.8–233.3 |
| 2062 | 115.799.7–131.1 | 211.4189.6–246.5 |
| 2063 | 117103.7–130.3 | 215.9193.5–239.5 |
| 2064 | 115.1101.7–130.3 | 212.6194.7–231.7 |
| 2065 | 117.3102.8–132.3 | 212.5191.7–241.4 |
| 2066 | 117.7103.7–132.1 | 215.6196.9–241.3 |
| 2067 | 119103–133.5 | 214.6192.2–242.5 |
| 2068 | 118.1104.3–131.4 | 217192.5–243.8 |
| 2069 | 118.4103.8–133.2 | 216.7196.5–240.8 |
| 2070 | 118.2104.9–132.9 | 214.6189–244.5 |
| 2071 | 119.3105.1–135.3 | 221.2192.7–244.8 |
| 2072 | 119103.2–135.1 | 217.5194.7–239.4 |
| 2073 | 120.6104.9–137.7 | 220.5197.7–248.2 |
| 2074 | 119.1104.4–134.5 | 215.3193.3–240.1 |
| 2075 | 119.7105.9–135.5 | 220.7195.5–247.6 |
| 2076 | 118.9102.6–137 | 219.5196.2–243.5 |
| 2077 | 120.3104.3–135.3 | 220.8193.8–249.9 |
| 2078 | 119.2105.3–136 | 220.7198.9–246.9 |
| 2079 | 120.1103.2–135.6 | 219.4195.2–249.3 |
| 2080 | 120.4106.1–139.5 | 221.7197.8–246 |
| 2081 | 120.5104.3–137.1 | 222.4199.1–247 |
| 2082 | 122.5107.5–137.7 | 220.1198.5–243 |
| 2083 | 122.6105.8–140.4 | 217.4195.3–258.9 |
| 2084 | 123.7107.6–139.1 | 223.7195.6–246 |
| 2085 | 121.3106.6–140.6 | 225.1203.3–254.4 |
| 2086 | 122.1107.9–139.8 | 223.1196.5–256 |
| 2087 | 123.7108–140.7 | 225.8201.1–255.8 |
| 2088 | 124106.5–142.2 | 224197.1–259.9 |
| 2089 | 124.1109–139.7 | 225.6200.2–255.2 |
| 2090 | 122.5105.4–141.9 | 225.1201.5–253 |
| 2091 | 124.3108–140.5 | 228.1201.9–261.8 |
| 2092 | 125.5110.1–140 | 227.3200.1–261.6 |
| 2093 | 124.5109–139.3 | 223.6200.9–258.9 |
| 2094 | 125108.7–142.9 | 223200.3–250.5 |
| 2095 | 125.3108.5–141 | 228205.2–255.9 |
| 2096 | 125.8109–142.4 | 225.1201.6–257.9 |
| 2097 | 123.6106.9–141.8 | 222.6200.1–251.1 |
| 2098 | 125.8109.4–143.8 | 225.6199.6–261 |
| 2099 | 123.1107.8–140.1 | 223.2200.6–251.1 |
| 2100 | 124.4107.9–143.7 | 225.7204.7–259.7 |
Each country on its own
Good to know
- Nights in a year when the temperature stays above 20 °C, averaged over the country.
- Source: World Bank Climate Change Knowledge Portal, CMIP6 multi-model median.
- The dashed line is the CMIP6 model median (SSP2-4.5, middle of the road), a scenario rather than a forecast; the band is its models’ 10th–90th percentile.
- Climate model values are the median of the CMIP6 models, run on past emissions to 2014 and on SSP2-4.5, a middle-of-the-road path, after: they are not measurements.
How the layers work, where their data comes from and what they can’t tell you: Countries through time
Iran vs Yemen
Health
- Life expectancyIran: 77.7 years in 2023Yemen: 69.3 years in 2023
- Child mortalityIran: 1.1 per 100 live births in 2024Yemen: 3.8 per 100 live births in 2024
- Infant mortalityIran: 9.9 per 1,000 live births in 2023Yemen: 32.3 per 1,000 live births in 2023
- DepressionIran: 5.12% in 2017Yemen: 4.01% in 2017
- Suicide rateIran: 5.4 per 100,000 people in 2017Yemen: 6 per 100,000 people in 2017
People
- PopulationIran: 90.6 million people in 2023Yemen: 39.4 million people in 2023
- Population growthIran: 1.12% a year in 2023Yemen: 3.03% a year in 2023
- Fertility rateIran: 1.7 births per woman in 2023Yemen: 4.59 births per woman in 2023
- Urban populationIran: 77.4% in 2025Yemen: 37% in 2025
- Median ageIran: 32.9 years in 2023Yemen: 18.2 years in 2023
- People aged 65 and overIran: 7.9% in 2023Yemen: 2.5% in 2023
- Net migration rateIran: 2.9 per 1,000 people in 2023Yemen: -0.1 per 1,000 people in 2023
Economy
Education
Politics
Conflict
Military
- Military spendingIran: 2.09% of GDP in 2025Yemen: 3.97% of GDP in 2014
- Military spending in US dollarsIran: $7.45B in 2025Yemen: $12.3B in 2014
- Military spending per personIran: $80 in 2025Yemen: $58 in 2014
- Military share of state spendingIran: 11.2% of government spending in 2025Yemen: 14.3% of government spending in 2014
- Armed forces personnelIran: 650,000 people in 2020Yemen: 40,000 people in 2020
- National powerIran: 1.64% of world capability in 2022Yemen: 0.24% of world capability in 2022
- Armed forces, share of workersIran: 2.35% of the labour force in 2020Yemen: 0.58% of the labour force in 2020
- Arms importsIran: 42 million TIV in 2024Yemen: 1 million TIV in 2022
- Arms exportsIran: 80 million TIV in 2025Yemen: 51 million TIV in 1986