Climate Trends in New Zealand

• In New Zealand, the longest run of frost days in a row in the data is 57 days, at Tara Hills (New Zealand), from 28 May 1969 to 23 July 1969.
• In New Zealand, the longest run of dry days in a row in the data is 106 days, at Enderby Island AWS (New Zealand), in 2013.
• In New Zealand, the longest run of wet days in a row in the data is 32 days, at Enderby Island AWS (New Zealand), in 2013.

Longest run of frost days (minimum at or below 0 C)

Consecutive days with a daily minimum at or below 0 C (32 F).

Longest dry spell (days under 1 mm of rain), within one year

Consecutive days with less than 1 mm (0.04 in) of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).

Longest wet spell (days with 1 mm or more of rain), within one year

Consecutive days with 1 mm (0.04 in) or more of rain, the longest run within a year. The dates are not kept, so the list gives the year (within the year).

A run belongs to the year it started in, even when it ran on into the next year. A station appears once per list, with its longest run in a complete year. Dry and wet spells are the longest run within a year. Lists use complete years only, so a long run in a year with gaps in the record is not counted.

• In New Zealand, the largest reported one day rise in the daily maximum is 15.7 C (28.3 F), at Tara Hills (New Zealand) on 24 November 1966.
• In New Zealand, the largest reported one day drop in the daily maximum is 18.1 C (32.6 F), at Invercargill Airpor (New Zealand) on 27 February 1995.
• In New Zealand, the largest reported one day rise in the daily minimum is 18.0 C (32.4 F), at Campbell Island AWS (New Zealand) on 13 November 1943.
• In New Zealand, the largest reported one day drop in the daily minimum is 17.7 C (31.9 F), at Tara Hills (New Zealand) on 5 January 1961.
• In New Zealand, the largest reported range between the high and the low of one day is 27.9 C (50.2 F), at Tara Hills (New Zealand) on 12 January 1960.
• In New Zealand, the smallest reported range between the high and the low of one day is 0.0 C (0.0 F), at Campbell Island AWS (New Zealand) on 29 January 1949.

Caveat.Single readings can still be instrument errors that quality control missed. A station with one faulty value can top a list, so read each entry as a reported value, not as a confirmed event.

Biggest one day rise in the daily maximum

The largest increase in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day drop in the daily maximum

The largest decrease in the daily maximum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day rise in the daily minimum

The largest increase in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Biggest one day drop in the daily minimum

The largest decrease in the daily minimum temperature from one day to the next. Values are in degrees Celsius with Fahrenheit beside them.

Widest range between the high and the low of one day

The largest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.

Narrowest range between the high and the low of one day

The smallest difference between the highest and the lowest temperature of the same day. Values are in degrees Celsius with Fahrenheit beside them.

Only stations with at least 10 complete years are listed, and a station appears once per list.