March 2024 Global Climate Report (2024)

Temperature

In January 2024, the NOAA Global Surface Temperature (NOAAGlobalTemp) dataset version 6.0.0 replaced version 5.1.0. This new version incorporates an artificial neural network (ANN) method to improve the spatial interporlation of monthly land surface air temperatures. The period of record (1850-present) and complete global coverage remain the same as in the previous version of NOAAGlobalTemp. While anomalies and ranks might differ slightly from what was reported previously, the main conclusions regarding global climate change are very similar to the previous version. Please see our Commonly Asked Questions Document and web story for additional information.

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. The major dataset, NOAAGlobalTemp version 6.0.0, updated in 2024, uses comprehensive data collections of increased global area coverage over both land and ocean surfaces. NOAAGlobalTempv6.0.0 is a reconstructed dataset, meaning that the entire period of record is recalculated each month with new data. Based on those new calculations, the new historical data can bring about updates to previously reported values. These factors, together, mean that calculations from the past may be superseded by the most recent data and can affect the numbers reported in the monthly climate reports. The most current reconstruction analysis is always considered the most representative and precise of the climate system, and it is publicly available through Climate at a Glance.

March 2024

March 2024 was the warmest March on record for the globe in NOAA's 175-year record. The March global surface temperature was 1.35°C (2.43°F) above the 20th-century average of 12.7°C (54.9°F). This is 0.01°C ( °F) warmer than the previous March record set in 2016, and the tenth consecutive month of record-high global temperatures. March 2024 marked the 48th consecutive March with global temperatures, at least nominally, above the 20th-century average.

Global land-only March temperatures ranked fourth-warmest on record at 2.09°C (3.76°F) above average. Ocean-only temperatures ranked warmest on record for March at 1.01°C (1.82°F) above average. This is 0.18°C (0.32°F) warmer than the second warmest March of 2016, and the 12th-consecutive monthly 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 March, and according to NOAA's Climate Prediction Center, a transition from El Niño to ENSO–neutral is likely by April-June 2024 (85% chance), with odds of La Niña developing by June–August 2024 (60% chance).

Temperatures were much-above average to record warm throughout much of South America, Africa and western and central Europe. Temperatures were also much warmer-than-average across large parts of the northeastern quadrant of the U.S. and eastern Canada (where monthly anomalies exceeded +3.0°C in many areas). Much warmer-than-average tempertures also occurred in parts of Southwest Asia, central and eastern China, much of the eastern half of Australia, parts of far eastern Russia as well as large parts of West Antarctica. As was the case in February, sea surface temperatures were again above average across much of the northern, western, and equatorial Pacific Ocean. Record-warm March temperatures covered much of the tropical Atlantic Ocean as well as parts of the southern Atlantic and northwestern Indian Ocean. Record warm temperatures covered 10.8% of the world's surface this month.

March temperatures were cooler than the 1991–2020 average across much of the western U.S., south-central Canada, northern Iceland and surrounding waters of the North Atlantic, and northwestern parts of Siberia. Temperatures also were below-average in large parts of western Australia and East Antarctica, and slightly cooler-than-average temperatures stretched from Afghanistan to northeastern parts of India. Sea surface temperatures were below average in the southeastern Pacific and parts of the Southern Ocean. There were no areas of record cold temperatures in March.

In the Northern Hemisphere, March 2024 ranked second warmest on record at 1.68°C (3.02°F) above average, cooler than the March 2016 record of 1.82°C (3.28°F). The Northern Hemisphere land temperature was seventh warmest while the ocean temperature ranked warmest on record for the month. The Southern Hemisphere experienced its warmest March on record at 1.01°C (1.82°F) above average. Both the Southern Hemisphere land temperature and ocean temperature also ranked warmest on record for March.

A smoothed map of blended land and sea surface temperature anomalies is also available.

South America and Africa each had their warmest March while Europe had its 2nd-warmest March on record.

• Much of Central Africa was record warm in March. In South Sudan, widespread daily high temperatures exceeding 38°C persisted across the country, and a two-week nationwide school closure took place due to extremely high forecasted temperatures.
• In Germany March 2024 was the warmest March since records began in 1881, 2.8°C warmer than the 1991–2020 average. It was the second month in a row to set a new monthly record for Germany.
• The lowlands of Austria had a March that was warmest on record in the 258-year history of measurements at 3.4°C above the 1991–2020 average. This followed a February that also was the warmest on record for the lowlands. The persistently warm temperatures led to the earliest apricot blossom date since these records began in 1946, three weeks earlier than average for the 1991–2020 climate period. The mountains of Austria had their 9th warmest March in the 174-year series of mountain measurements, 2.4°C above average.
• March 2024 in France was the sixth warmest such month on record, tied with 2001 and 1981, 1.6°C warmer than the 1991–2020 average.
• Temperatures across the United Kingdom for March were 1.0°C above average based on provisional data. England provisionally recorded its seventh-warmest March on record in a series from 1884.
• In Croatia mean temperatures were in the top ten percentile or higher across the country in March.
• Italy had its sixth-warmest March in a record that began in 1800. The country as a whole was 1.42°C above the 1991–2020 average. Northern Italy was 9th warmest, Central Italy 2nd warmest, and Southern Italy 4th warmest on record
• In Iceland, in contrast to March 2023 which was the coldest such month since 1979, March 2024, was warmer than average in the South, where Reykjavik was 0.5°C above the 1991–2020 average, and generally cooler than average in the North where Akureyri was 0.3°C below average.
• In Argentina March temperatures were generally below average in the southern half of the country and warmer than average in northern areas. Monthly anomalies exceeding +3°C above the 1991–2020 average were widespread in provinces that included Formosa, Chaco, Santiago del Estero, and parts of Salta, Santa Fe, Tucuman, Catamarca, La Rioja, and San Luis.

Asia had its 12th-warmest March and Oceania its 17th warmest March on record.

• The March 2024 national mean monthly temperature for Pakistan was near average, 0.08°C below the country average of 18.86°C. The hottest day of the month in Pakistan occurred at Shaheed Benazirabad (Sindh), when the high temperature reached 42.5°C (108.5°F) on March 26.
• According to the Hong Kong Observatory, the mean temperature in March 2024 for Hong Kong ranked eighth warmest on record at 1.6°C above the 1991–2020 average.
• Australia recorded a national area-average mean temperature that was 1.11°C above the 1961–1990 average, tied for the 10th-warmest March on record.

North America had its ninth warmest March at 2.08°C (3.74°F) above average.

• The average temperature of the contiguous U.S. in March 2024 was 45.1°F, which is 3.6°F above the 1901-2000 average, ranking it the 17th warmest on record.
• The Caribbean region had its warmest March on record, 1.41°C (2.54°F) above the 1910-2000 average. This is 0.41°C (0.74°F) above the second warmest March of 2016.

500 mb maps

In the atmosphere, 500-millibar height pressure anomalies correlate well with temperatures at the Earth's surface. The average position of the upper-level ridges of high pressure and troughs of low pressure—depicted by positive and negative 500-millibar height anomalies on the map—is generally reflected by areas of positive and negative temperature anomalies at the surface, respectively.

Year-to-date Temperature: January–March 2024

The January–March global surface temperature ranked warmest in the 175-year record at 1.35°C (2.43°F) above the 1901-2000 average of 12.3°C (54.1°F). According to NCEI's statistical analysis, there is a 55% chance that 2024 will rank as the warmest year on record and a 99% chance that it will rank in the top five.

January to March was characterized by widespread much-warmer-than-average and record warm conditions across almost all of South America. Large parts of southern and western Europe also were record warm for the three-month period, and record warm temperatures were widespread in Southwest Asia and many parts of Africa. Much-warmer-than-average temperatures stretched from areas of the central U.S. to eastern Canada and also covered most of the Arctic. Temperatures were much warmer-than-average across most of China, Southeast Asia, and southern Australia. Cooler-than-average temperatures were widespread in Antarctica. Temperatures below the 1991—2020 average also were notable in areas of northern Iceland stretching into east-central Greenland, parts of western North America, much of northern India and Nepal, and small parts of southwestern Russia, eastern Russia, and far eastern Mongolia.

Sea surface temperatures were much warmer-than-average across much of the northern and equatorial Pacific as well as the southwest Pacific. Record-warm sea surface temperatures stretched from the Caribbean Sea across the tropical Atlantic and to the northeastern Atlantic. Record warm temperatures also affected large parts of the Indian Ocean, southern Atlantic and parts of the southwestern Pacific Ocean. The most widespread areas of cooler-than-average sea surface temperatures occurred in the southeastern Pacific, southwestern Indian Ocean and parts of the Southern Ocean.

A smoothed map of blended land and sea surface temperature anomalies is also available.

South America had its warmest January–March year-to-date period, Europe and Africa each their second-warmest, and North America its fourth-warmest. Oceania had its second-warmest January–March period and Asia its 11th warmest. Overall, the Northern Hemisphere had its second-warmest year-to-date, while the Southern Hemisphere had its warmest such period on record.

• The average temperature of the contiguous U.S. for the January-March 2024 period was 39.4°F, which is 4.2°F above the 1901-2000 average, ranking as the fifth warmest on record.
• The Caribbean region had its warmest January-March on record, 1.23°C (2.21°F) above the 1910-2000 average.
• In Spain, preliminary reports indicate the January-March period was likely the warmest since 1961.

Precipitation

The maps shown below represent precipitation percent of normal (left, using a base period of 1961–1990) and precipitation percentiles (right, using the period of record) based on the GHCN dataset of land surface stations.

March 2024

Above-average March precipitation occurred in areas that included much of western Europe, much of central and eastern Russia, areas of central China, large parts of Japan, and much of central and western Australia. Precipitation also was above-average along much of the U.S. East Coast and Deep South, the western contigous U.S. and western Alaska. In South America wetter-than-average conditions were notable in coastal Brazil and northeastern Argentina. Conversely, drier-than-average conditions were widespread in Mexico, Central America, many northern areas of South America, and the Hawaiian Islands. March precipitation also was below-average in much of central and eastern Europe, southern Mongolia, northern and southeastern China, southern and western India, large parts of North Africa and West Africa, as well as much of eastern Australia and New Zealand.

References

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• Adler, R., M. Sapiano, G. Huffman, J. Wang, G. Gu, D. Bolvin, L. Chiu, U. Schneider, A. Becker, E. Nelkin, P. Xie, R. Ferraro, D. Shin, 2018. The Global Precipitation Climatology Project (GPCP) Monthly Analysis (New Version 2.3) and a Review of 2017 Global Precipitation. Atmosphere. 9(4), 138; doi:10.3390/atmos9040138
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