with John Maunder
Temperatures have been recorded in the Tauranga area at several sites during the last 100 years, including the current Tauranga Airport site from June 1990.
The average afternoon temperature in December 2016 was 22.3 degrees Celsius, only 0.1 degrees warmer the average over the last 104 years.
The graph below shows details of the average daily maximum temperatures, called simply ‘afternoon', for Tauranga for December from 1913-2016.
The long-term average afternoon temperature in December for Tauranga is 22.1 degrees Celsius, ranging from the ‘cool' December months of 2004 (20.1), 1968 (20.5) and 1944 and 1951 (both 20.7), to the ‘warm' December months of 1940 (24.4), 1937 (24.0), and 1990 (23.8).
The graph of the average afternoon temperatures for December shows generally normal variations from December-to-December during the last 100 years.
The average December afternoon temperature during the 50 years from 1963 to 2011 of 22.2 degrees Celsius which is the same as that recorded in the 50 years from 1914 to 1961.
The average afternoon temperature of 23.0 degrees Celsius or more, and 12 December months with an average afternoon temperature of less than 21.0 degrees Celsius or less.
The seven warmest December months (in terms of afternoon temperatures), on record, in chronological order, are 1930, 1934, 1937, 1940, 1990, 1993, and 1994.
By contrast, the seven coolest December months (in terms of afternoon temperatures), on record, in chronological order, are 1921, 1946, 1951, 1962, 1968, 1977, and 2004.
For further information on climate and climate matters, see: https://sites.google.com/site/climatediceandthebutterfly/