GISS August global temperature up by 0.05°C from July.

The GISS V4 land/ocean temperature anomaly was 1.24°C in August 2023, up from 1.19°C in July. This rise is nearly the same as the 0.056°C rise reported for TempLS.

As with TempLS, August was by a large margin the warmest August in the record - next was 1.02°C in 2016. As GISS emphasises in another tweet, the three months in a row make it by far the warmest summer in the record.

As usual here, I will compare the GISS and earlier TempLS plots below the jump.

August global surface TempLS up 0.056°C from July.

The TempLS FEM anomaly (1961-90 base) was 1.117°C in August, up from 1.061°C in July. It was the warmest August in the record, 0.24°C well ahead of 0.875°C in 2016. The NCEP/NCAR reanalysis base index fell by 0.083°C.

That makes three vrey warm months in a row, and the recent warmth makes it very likely that 2023 will be the warmest year in the record. The average to date is 0.904°C, well ahead of 0.857°C in 2016. But unlike 2016, 2023 is getting warmer, while 2016 peaked in Feb-Mar. I'll show again the table of months in descending order of warmth:



Most of the world was warm, with the only cool spots neing areas of Antarctica. The pattern was so similar to July that I had to check that I wasn't just recycling!

Here is the temperature map, using now the FEM-based map of anomalies.

As always, the 3D globe map gives better detail. There are more graphs and a station map in the ongoing report which is updated daily.