Global temperature in the 1980s

Decade average+0.25°C1951–1980

vs previous decade+0.21°C

Warmest year1988+0.39°C

CO₂ average345.7 ppmMauna Loa

Each year

1980+0.26°C

1981+0.32°C

1982+0.14°C

1983+0.31°C

1984+0.16°C

1985+0.12°C

1986+0.18°C

1987+0.32°C

1988+0.39°C

1989+0.27°C

Year	Global	NH	SH	Rank
1980	+0.26°C	+0.17°C	+0.35°C	40
1981	+0.32°C	+0.37°C	+0.27°C	35
1982	+0.14°C	+0.05°C	+0.23°C	50
1983	+0.31°C	+0.25°C	+0.39°C	38
1984	+0.16°C	+0.04°C	+0.28°C	49
1985	+0.12°C	±0.00°C	+0.24°C	52
1986	+0.18°C	+0.13°C	+0.23°C	46
1987	+0.32°C	+0.25°C	+0.41°C	36
1988	+0.39°C	+0.37°C	+0.41°C	31
1989	+0.27°C	+0.27°C	+0.28°C	39

1880s−0.22°C

1890s−0.24°C

1900s−0.32°C

1910s−0.34°C

1920s−0.24°C

1930s−0.12°C

1940s+0.04°C

1950s−0.05°C

1960s−0.03°C

1970s+0.03°C

1980s ◀+0.25°C

1990s+0.39°C

2000s+0.59°C

2010s+0.81°C

2020s+1.07°C

Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.