Monthly and annual global land–ocean temperature anomalies from 1880 to the present, relative to the 1951–1980 average.
About
NASA's GISS Surface Temperature Analysis (GISTEMP v4): combined land and sea-surface temperature anomalies for the whole globe, in °C, relative to the 1951–1980 mean. One row per year, one column per month, plus annual (J-D), December–November (D-N) and seasonal means.
Reading the file
- The first line is a title; the header row is the second line.
- The current year is incomplete: months not yet published are shown as
***. - NASA revises the whole series slightly as new station data arrives, so the link always gives the current analysis.
Source and licence
NASA Goddard Institute for Space Studies. A US government work, so in the public domain. Cite:
GISTEMP Team (2026). GISS Surface Temperature Analysis (GISTEMP), version 4. NASA Goddard Institute for Space Studies. https://data.giss.nasa.gov/gistemp/