Global temperature, Aug 1999

Global anomaly+0.31°C1951–1980

Rank among all Augs38 / 147warmest first

N. Hemisphere+0.30°C

S. Hemisphere+0.32°C

vs same month last year−0.34°C

CO₂ (Mauna Loa)367.06 ppm

All months of 1999

Jan+0.48°C

Feb+0.64°C

Mar+0.33°C

Apr+0.32°C

May+0.26°C

Jun+0.36°C

Jul+0.39°C

Aug ◀+0.31°C

Sep+0.39°C

Oct+0.34°C

Nov+0.37°C

Dec+0.40°C

This month+0.31°C

Same month, previous year+0.65°C

Same month 10 years earlier+0.33°C

Same month 50 years earlier−0.13°C

Aug average 1991–2020+0.58°C

Warmest Aug on record (2026)+1.40°C

Year	Global	NH	SH	Rank
1989	+0.33°C	+0.26°C	+0.40°C	37
1990	+0.34°C	+0.41°C	+0.28°C	36
1991	+0.39°C	+0.35°C	+0.43°C	32
1992	+0.08°C	−0.07°C	+0.24°C	55
1993	+0.11°C	+0.02°C	+0.19°C	53
1994	+0.22°C	+0.32°C	+0.11°C	41
1995	+0.45°C	+0.54°C	+0.37°C	29
1996	+0.48°C	+0.18°C	+0.77°C	26
1997	+0.41°C	+0.48°C	+0.35°C	31
1998	+0.65°C	+0.72°C	+0.59°C	20
1999	+0.31°C	+0.30°C	+0.32°C	38
2000	+0.42°C	+0.47°C	+0.38°C	30
2001	+0.48°C	+0.68°C	+0.30°C	25
2002	+0.53°C	+0.55°C	+0.52°C	24
2003	+0.64°C	+0.86°C	+0.43°C	21
2004	+0.45°C	+0.55°C	+0.35°C	28
2005	+0.60°C	+0.69°C	+0.50°C	23
2006	+0.71°C	+0.68°C	+0.73°C	15
2007	+0.60°C	+0.72°C	+0.47°C	22
2008	+0.45°C	+0.58°C	+0.34°C	27
2009	+0.69°C	+0.72°C	+0.66°C	17

Rank 445 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.