with John Maunder
Temperatures have been recorded in the Tauranga area at several sites during the last 107 years, including at the current Tauranga Airport site from June 1990.
The graph shows details of the average daily maximum temperatures, called simply ‘afternoon', for Tauranga for June from 1913-2019.
The long-term average afternoon temperature in June for Tauranga is 14.8 degrees Celsius.
The cool' June months were in 1972 with 13.0 degrees Celsius, 1936 with 13.2 degrees Celsius, and 1933 with 13.3 degrees Celsius.
The ‘warm' June months were in 2014 with 16.9 degrees Celsius, 1916 and 2011, both with 16.6 degrees Celsius, and June 2016 with 16.5 degrees C.
June 2014 had an average afternoon temperature of 16.9 degrees Celsius was the warmest June on record since observations were first made in 1913. The temperature in June 2019 was 15.5 degrees Celsius.
The graph of the average afternoon temperatures for June shows generally ‘normal' variations from June to June during the last 100 years.
But many of the last 20 June months since 1996 have been a little ‘warmer' than other June months since 1913.
From 1913 to 2019, there have been 15 June months with an average afternoon temperature of 15.6 degrees Celsius or more, and 12 June months with an average afternoon temperature of less than 13.9 degrees Celsius.
The ninth ‘warmest' June months on record, in chronological order, are: 1916, 1971, 1981, 1998, 1999, 2002, 2003, 2011, 2014, and 2016.
By contrast, the seventh ‘coolest' June months on record, in chronological order, are 1933, 1936, 1941, 1944,1969, 1972 and 1976.
The average afternoon temperature in June during the 51 year period 1914-1964 was 14.7 degrees Celsius, compared with 14.9 degrees Celsius for the 51 year period from 1965 to 2015.
For further information see https://sites.google.com/images/climatediceandthebutterfly/