World temperature anomalies in June 2010 Photograph: NCDC/NESDIS/NOAA

Last month was the hottest June ever recorded worldwide and the fourth consecutive month that the combined global land and sea temperature records have been broken, according to the US government’s climate data centre.

The figures released last night by the National Oceanic and Atmospheric Administration (NOAA) suggest that 2010 is now on course to be the warmest year since records began in 1880.

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