November's climate

New Zealand climate in November 2005

 

Rainfall (click to enlarge).

Temperature (click to enlarge).

Rainfall was less than 50% of normal throughout much of the north and west of both islands, and less than 25% of normal in north Taranaki, Kapiti, and Golden Bay. Rainfall was higher than normal in Coromandel, Gisborne, and the far southwest of the South Island.

Mean temperatures were above historical averages in Marlborough, Otago, south Westland, Fiordland, and Southland, and below average in Thames, inland Bay of Plenty, Taupo, and Hawke’s Bay. They were near average elsewhere.

For more information on the climate in November, visit the climate summaries page at www.niwa.co.nz/ncc/cs/mclimsum_05_11

Low soil moisture in many areas

 

Soil moisture (click to enlarge).

In November, soils became drier in eastern regions from southern Wairarapa to Otago, as well as in Kapiti, Wellington, and Nelson. The change from October to drier conditions was particularly noticeable in the west of the North Island.

 

Low flows in many areas

 

River flows (click to enlarge).

November river flows were high for northern Hawke’s Bay and Gisborne, near average in parts of Bay of Plenty and southern Hawke’s Bay, and lower than average everywhere else.

September 2005 to November 2005: the climate we predicted and what happened

 

(click to enlarge).

Rainfall

Rainfall was above normal as predicted in the east of the North Island. The western North Island and most of the South Island were drier than expected.


 

(click to enlarge).

Air temperature

Air temperatures were above average in much of the North Island as was predicted, and above average in the southwest of the South Island.


 

(click to enlarge).

River flows

River flows were normal to above normal in the north and east of the North Island, below normal to normal in the southwest of the North Island, and lower than normal elsewhere.


The three outcome maps give the tercile rankings of the rainfall totals, mean air temperatures, and mean river flows that eventuated from September to November, in comparison with the forecast conditions.

As an approximate guide, middle tercile rainfalls typically range from 80 to 115% of the historical normal, and middle tercile temperatures range about the average by plus or minus 0.5 °C.