Switzerland vs Vietnam: Tropical nights

Tropical nights in 2014: 0.2 nights in Switzerland and 242.6 nights in Vietnam, in the CMIP6 climate models’ median run. In 2014 the value was higher in Vietnam, by 242.4 nights, or 1,000 times that in Switzerland.

Watch it change on the map

nights a year · CMIP6

SwitzerlandVietnamCMIP6 model median (SSP2-4.5, middle of the road)models’ 10th–90th percentile

What the numbers say

Vietnam has been higher in every year both have figures for since 1950.
The CMIP6 model median (SSP2-4.5, middle of the road) puts Switzerland at 3.8 nights and Vietnam at 282.7 nights in 2100.

Every year

nights a year · CMIP6

Year	Switzerland	Vietnam
2014	0.2	242.6
2013	0.1	243.6
2012	0.1	242.4
2011	0.1	241.9
2010	0.1	240.9
2009	0.1	240
2008	0.1	238.7
2007	0	238
2006	0	239.1
2005	0.1	238.3
2004	0.1	241.8
2003	0.1	235.9
2002	0.1	236.3
2001	0.1	241.3
2000	0	237
1999	0	236
1998	0	236.8
1997	0	237.1
1996	0	231.4
1995	0	229.9
1994	0	231.2
1993	0	225.3
1992	0	221.9
1991	0	229.8
1990	0	233.1
1989	0	229.2
1988	0	231.7
1987	0	230.3
1986	0	230.9
1985	0	228
1984	0	230.2
1983	0	224.9
1982	0	227.5
1981	0	229.7
1980	0	228.1
1979	0	228.9
1978	0	227.5
1977	0	229
1976	0	225.8
1975	0	225.8
1974	0	225.7
1973	0	230.3
1972	0	225.6
1971	0	225.5
1970	0	226.1
1969	0	227
1968	0	227.1
1967	0	222.9
1966	0	226.8
1965	0	225.4
1964	0	222.6
1963	0	224.3
1962	0	227.8
1961	0	229.4
1960	0	228.5
1959	0	226.2
1958	0	230.9
1957	0	228.4
1956	0	228.7
1955	0	227.5
1954	0	226.3
1953	0	228.2
1952	0	228.5
1951	0	229.2
1950	0	228.9

CMIP6 model median (SSP2-4.5, middle of the road) · 2015–2100

Year	Switzerland	Vietnam
2015	0.10–1.1	245.8228.2–261.9
2016	0.20–1.3	243.7226.1–259.4
2017	0.20–1.5	247229.6–260.7
2018	0.10–1.3	248.3228.8–263.3
2019	0.30–1.4	248.1229.2–262.8
2020	0.10–1.4	248.8229.6–262.9
2021	0.30–2.2	251.1233.1–266.7
2022	0.30–2.1	252.4234.3–266.8
2023	0.30–1.9	253.4235.4–266.6
2024	0.40–1.5	251.3236.7–264.6
2025	0.40–1.9	252.4234.1–266.2
2026	0.50–1.9	252.8232.9–268.5
2027	0.30–1.6	253.2237–268.8
2028	0.50–1.9	254.3237.7–272
2029	0.80–2.2	258.1238.5–273.7
2030	0.30–2.4	256.4240.9–270.1
2031	0.40–1.4	255.9241.2–270.9
2032	0.60.1–2.4	257.4239.1–269.9
2033	0.60–3.2	258.3241.7–273.2
2034	0.70.1–3.3	258.8240.7–275.8
2035	0.70.1–2.4	258.6242.5–275.4
2036	0.80–2.7	258.3239.1–273.8
2037	0.60.1–2.7	258.7242.4–272.4
2038	0.80–2.9	263.4247.6–277.3
2039	0.90–2.6	260.2243.7–275.9
2040	0.90–2.6	260.1242.8–274.8
2041	10–2.9	263.1245.9–279
2042	0.80.1–2.8	263.6246.5–279
2043	10.1–2.7	261.4245.5–279.6
2044	0.80.1–3.3	263.2245.2–277.6
2045	1.20–3.5	265.5249.6–281.4
2046	1.20.2–3.8	264.9246.8–278.1
2047	1.50.1–3.8	266.9250.4–282.9
2048	10.1–4.6	268250.5–283.8
2049	1.60.1–4.2	267.8251.2–284.8
2050	1.20.3–3.5	268251.2–283.5
2051	10–4	270.9254.3–285.4
2052	1.40.1–3.9	268.3253.3–282.8
2053	0.80.1–3.8	268.5250.1–283.2
2054	1.40.2–3.5	269.1250.8–283.6
2055	1.30.1–3.4	270249.8–284.2
2056	1.40.2–6.5	271.7254.8–290.1
2057	1.70.2–3.7	270253–285.7
2058	2.10.2–5.5	270.7252.9–286.5
2059	1.80.1–7.1	273257.6–286.6
2060	1.60.4–5.6	275.7255.6–290.6
2061	1.90.1–4.9	273.5254.6–289.5
2062	2.30.3–5	271.4253.1–290.2
2063	2.20.2–5.9	272.9252.7–288.1
2064	20.3–5	273.8254.4–288.1
2065	20.1–7.4	272255.8–286.3
2066	20.3–5.5	271.8254.4–287.3
2067	3.80.8–10	270.8252.1–287.6
2068	2.20.2–4.9	275.6256.9–292.4
2069	2.60.7–5.9	276.4258.5–292
2070	2.60.3–7.1	274.6257.8–292.8
2071	2.90.1–7.8	276.2255.2–294.1
2072	2.91.2–6.5	277256.8–291.4
2073	20.3–7	278.5262.7–293.4
2074	1.70.2–7.6	277.6259.2–295.8
2075	2.40.4–7.7	276.4258.7–294.4
2076	2.80.5–10.6	279.2258.5–296.6
2077	2.40.5–8.8	280264.9–294.7
2078	2.20.3–8.1	278.4258.6–295.5
2079	2.60.4–8.5	279.3263.4–293.6
2080	2.90.3–6.6	280261.4–296.5
2081	2.90.5–8.3	280.4261.2–297.9
2082	3.30.4–8.9	280.9258.9–296
2083	2.50.5–7.9	278.4261.6–295
2084	2.60.6–6.1	279257.4–293.8
2085	30.9–7.7	281.3265–297.8
2086	3.40.7–8.7	282.3260.2–297.5
2087	4.10.5–10.4	281.9261.3–300.7
2088	3.60.8–11.7	283.1265.7–301.5
2089	3.61.1–9	280.8261.2–301.6
2090	3.60.6–9.5	280.5264.5–297.6
2091	40.7–9.8	283.3264.3–298.9
2092	3.10.2–9.4	281.1261.5–299.4
2093	2.70.7–7.8	280.5263.4–296.1
2094	4.21.2–9.2	283264.5–300
2095	3.90.2–11.4	285.5264.5–302.9
2096	3.10.2–10	281.8264.8–299.8
2097	2.80.2–10.3	281.5263.3–299
2098	3.80.7–10.2	282.5263.9–301.5
2099	3.90.4–10.7	282.7265.1–298
2100	3.80.8–11.7	282.7261–298.2

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