Global temperature, Jan 1981

Global anomaly+0.53°C1951–1980

Rank among all Jans27 / 147warmest first

N. Hemisphere+0.80°C

S. Hemisphere+0.25°C

vs same month last year+0.23°C

CO₂ (Mauna Loa)339.29 ppm

All months of 1981

Jan ◀+0.53°C

Feb+0.42°C

Mar+0.48°C

Apr+0.32°C

May+0.25°C

Jun+0.29°C

Jul+0.33°C

Aug+0.35°C

Sep+0.15°C

Oct+0.12°C

Nov+0.23°C

Dec+0.41°C

This month+0.53°C

Same month, previous year+0.30°C

Same month 10 years earlier−0.02°C

Same month 50 years earlier−0.11°C

Jan average 1991–2020+0.63°C

Warmest Jan on record (2025)+1.38°C

Year	Global	NH	SH	Rank
1971	−0.02°C	−0.15°C	+0.09°C	76
1972	−0.22°C	−0.54°C	+0.10°C	104
1973	+0.29°C	+0.15°C	+0.44°C	43
1974	−0.10°C	−0.26°C	+0.05°C	89
1975	+0.10°C	+0.16°C	+0.04°C	59
1976	−0.03°C	+0.05°C	−0.12°C	78
1977	+0.19°C	−0.16°C	+0.53°C	51
1978	+0.06°C	+0.16°C	−0.03°C	67
1979	+0.09°C	−0.05°C	+0.22°C	61
1980	+0.30°C	+0.21°C	+0.39°C	42
1981	+0.53°C	+0.80°C	+0.25°C	27
1982	+0.05°C	−0.14°C	+0.24°C	70
1983	+0.53°C	+0.55°C	+0.51°C	26
1984	+0.31°C	+0.33°C	+0.28°C	40
1985	+0.22°C	+0.07°C	+0.37°C	49
1986	+0.26°C	+0.36°C	+0.16°C	46
1987	+0.32°C	+0.25°C	+0.39°C	39
1988	+0.57°C	+0.59°C	+0.55°C	23
1989	+0.12°C	+0.08°C	+0.16°C	57
1990	+0.42°C	+0.47°C	+0.36°C	34
1991	+0.43°C	+0.59°C	+0.26°C	33

Rank 306 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.