The 2018 temperature across South America was the eighth highest on record. The Caribbean region had its coolest year since 2012, while the Atlantic Main Development Region had its coolest year since 2001.The Gulf of Mexico and the Hawaiian region's 2018 temperature were both the third highest on record.The warmest January–November periods took place in 20. According to Mexico's National Weather Service, the January–November 2018 national temperature of 22.7☌ (40.9☏) was 1.5☌ (2.7☏) above average and the third warmest such period on record.Meanwhile, Alaska had its second warmest year on record with an annual temperature departure from average at +2.4☌ (+4.4☏). had a yearly temperature that was 0.84☌ (1.51☏) above the 20th century average-the 14th warmest year in the nation's 124-year record. The yearly temperature for North America has increased at an average rate of 0.12☌ (0.22☏) per decade since 1880 however, the average rate of increase is more than twice (0.29☌ / 0.52☏) as great since 1981. North America's 2018 continental temperature was the 18th highest since continental records began in 1910 at 0.73☌ (1.31☏). The global ocean-only surface temperature was also the fourth highest on record at +0.66☌ (+1.19☏). Averaged separately, the global land-only surface temperature for 2018 was 1.12☌ (2.02☏) above the 20th century average-the fourth highest annual temperature since global records began in 1880. Record warm temperatures were measured across much of Europe and the Mediterranean Sea, the Middle East, New Zealand and surrounding ocean, and across parts of Asia, the Atlantic Ocean and the western Pacific Ocean. Temperatures across much of the world were warmer- to much-warmer-than-average during 2018. January–December 2018 Blended Land and Sea Surface The following information was compiled from previous NCEI monitoring reports and public reports by National Hydrometeorological Services (NHMSs peers of the U.S. The 1901–2000 average combined land and ocean annual temperature is 13.9☌ (57.0☏), the annually averaged land temperature for the same period is 8.5☌ (47.3☏), and the long-term annually averaged sea surface temperature is 16.1☌ (60.9☏). January–December Ranks and Records January–December The following table lists the global combined land and ocean annually-averaged temperature rank and anomaly for each of the 10 warmest years on record. The yearly global land and ocean temperature has increased at an average rate of 0.07☌ (0.13☏) per decade since 1880 however, the average rate of increase since 1981 (0.17☌ / 0.31☏) is more than twice as great. The year 1998 is the only year from the 20th century among the ten warmest years on record, currently tying with 2009 as the ninth warmest year on record. Nine of the 10 warmest years (listed below) have occurred since 2005, with the last five years (2014–2018) ranking as the five warmest years on record. From 1880 to 1980, a new temperature record was set on average every 13 years however, for the period 1981–2018, the frequency of a new record has increased on average to once every three years. During the 21st century, the global land and ocean temperature departure from average has reached new record highs five times (2005, 2010, 2014, 2015, and 2016), with three of those being set back-to-back. The year began with a La Niña episode present across the tropical Pacific Ocean, transitioning to ENSO-neutral by April 2018.Ģ018 also marks the 42nd consecutive year (since 1977) with global land and ocean temperatures, at least nominally, above the 20th century average. The years 2015–2017 each had a global temperature departure from average that was more than 1.0☌ (1.8☏) above the 1880–1900 average, which is a period that is commonly used to represent the pre-industrial conditions. 2018 Global Significant Weather and Climate Events Global Temperaturesĭuring 2018, 11 of 12 monthly global land and ocean temperature departures from average ranked among the five warmest for their respective months, giving way to the fourth warmest year in NOAA's 139-year record.

Risk of rain 3 december 2018