Global temperature, Sep 2025

Global anomaly+1.25°C1951–1980

Rank among all Seps2 / 146warmest first

N. Hemisphere+1.41°C

S. Hemisphere+1.09°C

vs same month last year+0.04°C

CO₂ (Mauna Loa)424.37 ppm

All months of 2025

Jan+1.38°C

Feb+1.26°C

Mar+1.37°C

Apr+1.25°C

May+1.08°C

Jun+1.07°C

Jul+1.02°C

Aug+1.18°C

Sep ◀+1.25°C

Oct+1.19°C

Nov+1.21°C

Dec+1.06°C

This month+1.25°C

Same month, previous year+1.21°C

Same month 10 years earlier+0.84°C

Same month 50 years earlier−0.02°C

Sep average 1991–2020+0.58°C

Warmest Sep on record (2023)+1.48°C

Year	Global	NH	SH	Rank
2015	+0.84°C	+1.18°C	+0.52°C	10
2016	+0.90°C	+1.23°C	+0.59°C	7
2017	+0.74°C	+0.99°C	+0.51°C	13
2018	+0.80°C	+0.98°C	+0.63°C	11
2019	+0.93°C	+1.22°C	+0.65°C	5
2020	+0.96°C	+1.20°C	+0.73°C	4
2021	+0.92°C	+1.05°C	+0.80°C	6
2022	+0.88°C	+1.15°C	+0.61°C	8
2023	+1.48°C	+1.68°C	+1.29°C	1
2024	+1.21°C	+1.56°C	+0.87°C	3
2025	+1.25°C	+1.41°C	+1.09°C	2

Rank 21 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.