The hottest years in recent history have been primarily in the 21st century. According to various climate data sources, the years that are often cited as some of the hottest include:
- 2014
- 2015
- 2016
- 2019
- 2020
- 2021
- 2022
Among these, 2016 is frequently recorded as the hottest year on record globally.
While the other years you mentioned (1898 and 1899, 1998 and 2005) had warmer periods, they do not surpass the recent years in terms of global temperature averages.
Overall, the trend indicates that recent years, particularly from 2014 onward, have consistently set new heat records.