Warmest June on record for the globe, record-low Antarctic sea ice extent

July 18, 2019 – The global land and ocean surface temperature departure from average for June 2019 was the highest for the month of June in the 140-year NOAA global temperature dataset record, which dates back to 1880. The year-to-date temperature for 2019 was the second warmest January–June on record.

This monthly summary, developed by scientists at NOAA National Centers for Environmental Information, is part of the suite of climate services NOAA provides to government, business, academia and the public to support informed decision-making.

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June 2019 Temperature

The June temperature across global land and ocean surfaces was 1.71°F above the 20th century average of 59.9°F and was the highest for June in the 1880–2019 record. June 2019 bested the previous record set in 2016 by 0.04°F.

  • Nine of the 10 warmest Junes have occurred since 2010. June 1998 is the only value from the previous century among the 10 warmest Junes on record, and it is currently ranked as the eighth warmest June on record.

  • June 2019 also marks the 43rd consecutive June and the 414th consecutive month with temperatures, at least nominally, above the 20th century average.

  • Record warm temperatures during June 2019 were present across parts of central and eastern Europe, northern Russia, Asia, Africa, South America, the north Indian Ocean, and across parts of the Pacific and Atlantic oceans. No land or ocean areas had record cold June temperatures.

The June globally averaged land surface temperature was 2.41°F above the 20th century average of 55.9°F. This value was also the highest June land temperature in the 140-year record, surpassing the previous record of +2.34°F set in 2015.

  • The most notable warm temperature departures from average were present across central and eastern Europe, north-central Russia, northeastern Canada and southern parts of South America, where temperatures were 3.6°F above the 1981–2010 average or higher. The most notable cooler-than-average temperatures were limited to parts of western Asia and Antarctica, where temperatures were at least 1.8°F below the 1981–2010 average or cooler.

  • Regionally, South America, Europe, Africa, the Hawaiian region and the Gulf of Mexico had their warmest June in the 110-year record. Asia and the Caribbean region had their eighth and ninth highest June temperature since continental records began in 1910, respectively. Meanwhile, North America and Oceania had their coolest June since 2009 and 2012, respectively.

The June globally averaged sea surface temperature was 1.46°F above the 20th century monthly average of 61.5°F — tying with 2016 as the highest global ocean temperature for June on record. June 2019 also tied with August 2015, April 2016 and June 2016 as the 10th highest monthly global ocean temperature departure from average among all months (1,674 months) on record. The 10 highest global ocean monthly temperature departures from average have all occurred since September 2015.

Sea Ice and Snow Cover

June 2019 marked the 20th consecutive June with Arctic sea ice extent below average. This was the second smallest Arctic sea ice extent for June in the 41-year record at 475,000 square miles (10.5%) below the 1981–2010 average and 46,300 square miles above the record low set in June 2016, according to an analysis by the National Snow and Ice Data Center using data from NOAA and NASA.

June 2019 marks the fourth consecutive June that the Antarctic sea ice extent was below average at 425,000 square miles (8.5%) below the 1981–2010 average. This was the smallest June extent in the 41-year record, surpassing the previous record set in 2002 by 62,000 square miles.

Year-to-date (January–June 2019)

The year-to-date temperature across global land and ocean surfaces was 1.71°F above the 20th century average of 56.3°F — tying with 2017 as the second highest for January–June in the 140-year record. Only January–June 2016 (+2.00°F) was warmer.

  • The most notable warm temperature departures from average were present across parts of the Northern Hemisphere, specifically Alaska, western Canada and central Russia, where temperature departures from average were +5.4°F or higher. Meanwhile, the most notable cool temperature departures from average were present across much of the contiguous U.S. and southern Canada, where temperatures were at least 1.8°F below average or cooler.

  • Record-warm January–June temperatures were present across central South America, the southern half of Africa, New Zealand and its surrounding ocean, as well as parts of Alaska, western Canada, Mexico, the Bering Sea, the Atlantic Ocean, Madagascar and surrounding Indian Ocean, and across parts of eastern Asia. No land or ocean areas had record-cold temperatures during January–June 2019.

  • Regionally, five of six continents had a January–June temperature that ranked among the four highest such periods on record, with South America having its warmest year-to-date on record and Oceania having a near-record January-June temperature.

The year-to-date globally averaged land surface temperature was 2.68°F above the 20th century average of 45.0°F. This value was the third highest for January–June on record, behind 2016 (+3.35°F) and 2017 (+2.79°F).

The year-to-date globally averaged sea surface temperature was the second highest for January–June in the 1880–2019 record at 1.33°F above the 20th century average of 60.9°F. June 2016 (+1.51°F) was warmer.

The Global Report for June 2019 utilizes the newly released NOAA GlobalTemp dataset version 5 from NOAA NCEI.

For a more complete summary of climate conditions and events, see our June 2019 Global Climate Report.