NOAA's National Centers for Environmental Information calculates the global temperature anomaly every month based on preliminary data generated from authoritative datasets of temperature observations from around the globe.
below are excerpts from the global climate report for april just gone.
NOAA's NCEI:
"April 2024 was the warmest April on record for the globe in NOAA's 175-year record. The April global surface temperature was 1.32°C (2.38°F) above the 20th-century average of 13.7°C (56.7°F). This is 0.18°C (0.32°F) warmer than the previous April record set most recently in 2020, and the eleventh consecutive month of record-high global temperatures.
"April 2024 marked the 48th consecutive April with global temperatures, at least nominally, above the 20th-century average.
"Global land-only April temperature was warmest on record at 1.97°C (3.55°F) above average. The ocean-only temperature also ranked warmest on record for April at 1.03°C (1.85°F) above average, 0.17°C (0.31°F) warmer than the second warmest April of 2023, and the 13th-consecutive monthly ocean record high.
"These temperatures occurred as the current El Niño episode nears its end. El Niño conditions that emerged in June 2023 weakened further in April, and according to NOAA's Climate Prediction Center, a transition from El Niño to ENSO–neutral is likely in the next month, with odds of La Niña developing by June–August (49% chance) or July–September 2024 (69% chance)."
"as was the case in recent months, sea surface temperatures were above average across much of the northern, western, and equatorial Pacific Ocean, although the positive anomalies in the central and eastern equatorial Pacific were smaller than recent months as El Niño weakened.
"As they did in March, record-warm temperatures covered much of the tropical Atlantic Ocean as well as parts of the southern Atlantic and northwestern and southern Indian Ocean.
"Record warm temperatures covered 14.7% of the world's surface this month. This is more than twice the second-highest April value of 7.1% set in 2016 and the second highest record warm coverage for any month since records began in 1951, slightly below the 15.0% coverage in September 2023.
" Record cold temperatures covered 0.1% of the world's surface in April.In the Northern Hemisphere,
"April 2024 ranked warmest on record at 1.75°C (3.15°F) above average, 0.28°C (0.50°F) warmer than the previous April record of 2016.
"The Northern Hemisphere land temperature and ocean temperature each ranked warmest on record for the month.
" The Southern Hemisphere experienced its second warmest April on record at 0.88°C (1.58°F) above average, 0.05°C (0.09°F) cooler than 2023.
"The Southern Hemisphere land temperature for April tied 2010 as 20th warmest while April's ocean temperature was warmest on record."
