Global temperature, Dec 1899

Global anomaly−0.27°C1951–1980

Rank among all Decs117 / 146warmest first

N. Hemisphere−0.47°C

S. Hemisphere−0.07°C

vs same month last year−0.03°C

CO₂ (Mauna Loa)–

All months of 1899

Jan−0.17°C

Feb−0.39°C

Mar−0.37°C

Apr−0.21°C

May−0.23°C

Jun−0.32°C

Jul−0.16°C

Aug−0.09°C

Sep−0.05°C

Oct−0.04°C

Nov+0.12°C

Dec ◀−0.27°C

This month−0.27°C

Same month, previous year−0.24°C

Same month 10 years earlier−0.29°C

Dec average 1991–2020+0.60°C

Warmest Dec on record (2023)+1.36°C

Year	Global	NH	SH	Rank
1889	−0.29°C	−0.55°C	−0.05°C	120
1890	−0.32°C	−0.48°C	−0.17°C	127
1891	−0.04°C	−0.03°C	−0.06°C	74
1892	−0.40°C	−0.68°C	−0.13°C	132
1893	−0.32°C	−0.61°C	−0.04°C	126
1894	−0.21°C	−0.36°C	−0.07°C	109
1895	−0.15°C	−0.23°C	−0.06°C	98
1896	−0.05°C	−0.22°C	+0.12°C	78
1897	−0.21°C	−0.29°C	−0.14°C	108
1898	−0.24°C	−0.27°C	−0.21°C	114
1899	−0.27°C	−0.47°C	−0.07°C	117
1900	−0.07°C	−0.03°C	−0.11°C	84
1901	−0.28°C	−0.40°C	−0.15°C	119
1902	−0.43°C	−0.61°C	−0.24°C	135
1903	−0.52°C	−0.57°C	−0.47°C	141
1904	−0.34°C	−0.35°C	−0.33°C	129
1905	−0.14°C	−0.17°C	−0.09°C	96
1906	−0.15°C	+0.03°C	−0.35°C	97
1907	−0.47°C	−0.57°C	−0.37°C	139
1908	−0.50°C	−0.56°C	−0.45°C	140
1909	−0.57°C	−0.57°C	−0.57°C	143

Rank 1444 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.