December 2017 rainfall & 2017 rainfall summary

Most of our monitored sites got less than half of their usual December rainfall and a few of them were as low as 13% to 15%. This dry end to the year, however, balanced earlier wet periods, and total 2017 rainfall at most places was not far above normal.

December 2017 rainfall & 2017 rainfall summary

Between 13% and 55% of normal December rainfall was recorded at our monitored sites last month. Patea and the Stony River site near Okato recorded just 13% of normal rainfall with 12.4mm and 23.5mm respectively. Taungatara, east of Opunake, didn’t fare much better at 15% of normal, or 18.5mm for the month. Nineteen of our 27 monitored rainfall recorded new December minimums: North Egmont, Dawson Falls, Kahui Hut, Hillsborough, Brooklands, Mangati (Bell Block), Egmont Village, Everett Park, Inglewood, Huinga, Kotare, Okoki, Pohokura Saddle, Stony River (Okato), Taungatara (Te Kiri), Manaia, Patea, Omaru and Omahine. Rain fell on seven to 15 days, mostly during afternoon thunderstorms.

Total 2017 rainfall at our monitored sites was between 88% and 124% of normal. North Egmont was the only site below normal at 6257.5mm. It must be noted that by the end of November all our monitored sites except North Egmont already received their mean annual rainfall.

December 2017 rainfall maps [PDF, 636 KB]

What you should know:

  1. The site maps show data from a selection of the sites we monitor, but not all of them.

  2. The distribution maps are based on mathematical modelling and may not accurately represent actual rainfall in some unmonitored areas.

Click on each map for larger version.


Rainfall in December 2017.

Rainfall in the 2017 calendar year.


Rainfall distribution in December 2017.

Rainfall distribution in 2017.