Global temperature, May 1899

Global anomaly−0.23°C1951–1980

Rank among all Mays108 / 147warmest first

N. Hemisphere−0.25°C

S. Hemisphere−0.22°C

vs same month last year+0.08°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−0.23°C

Same month, previous year−0.31°C

Same month 10 years earlier−0.02°C

May average 1991–2020+0.58°C

Warmest May on record (2024)+1.16°C

Year	Global	NH	SH	Rank
1889	−0.02°C	−0.05°C	+0.01°C	71
1890	−0.40°C	−0.36°C	−0.44°C	139
1891	−0.17°C	−0.16°C	−0.18°C	97
1892	−0.23°C	−0.23°C	−0.23°C	109
1893	−0.34°C	−0.44°C	−0.25°C	132
1894	−0.32°C	−0.27°C	−0.36°C	128
1895	−0.27°C	−0.30°C	−0.24°C	117
1896	−0.16°C	−0.17°C	−0.16°C	96
1897	−0.02°C	+0.13°C	−0.16°C	70
1898	−0.31°C	−0.28°C	−0.34°C	126
1899	−0.23°C	−0.25°C	−0.22°C	108
1900	−0.09°C	−0.04°C	−0.14°C	84
1901	−0.15°C	−0.11°C	−0.18°C	94
1902	−0.33°C	−0.40°C	−0.25°C	130
1903	−0.40°C	−0.44°C	−0.37°C	138
1904	−0.52°C	−0.44°C	−0.60°C	145
1905	−0.30°C	−0.29°C	−0.30°C	125
1906	−0.26°C	−0.25°C	−0.28°C	115
1907	−0.46°C	−0.58°C	−0.35°C	142
1908	−0.38°C	−0.30°C	−0.47°C	137
1909	−0.55°C	−0.50°C	−0.60°C	146

Rank 1348 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.