Global temperature, May 2025

Global anomaly+1.08°C1951–1980

Rank among all Mays3 / 147warmest first

N. Hemisphere+1.22°C

S. Hemisphere+0.94°C

vs same month last year−0.08°C

CO₂ (Mauna Loa)430.51 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+1.08°C

Same month, previous year+1.16°C

Same month 10 years earlier+0.80°C

Same month 50 years earlier+0.16°C

May average 1991–2020+0.58°C

Warmest May on record (2024)+1.16°C

Year	Global	NH	SH	Rank
2015	+0.80°C	+1.05°C	+0.55°C	12
2016	+0.96°C	+1.11°C	+0.81°C	5
2017	+0.91°C	+0.93°C	+0.90°C	7
2018	+0.81°C	+1.01°C	+0.61°C	11
2019	+0.86°C	+1.02°C	+0.71°C	9
2020	+0.99°C	+1.26°C	+0.72°C	4
2021	+0.79°C	+1.05°C	+0.53°C	13
2022	+0.84°C	+1.03°C	+0.65°C	10
2023	+0.94°C	+1.13°C	+0.75°C	6
2024	+1.16°C	+1.45°C	+0.88°C	1
2025	+1.08°C	+1.22°C	+0.94°C	3
2026	+1.13°C	+1.30°C	+0.97°C	2

Rank 51 of all 1760 months on record. Temperatures are anomalies vs the 1951–1980 average (NASA GISTEMP v4); values can be revised later.