General January Weather

[NZ Thunderstorm Soc]

Lightning from last Thursday's thunderstorm taken from up on the Downs taken by Sade Hopkins.

[spwill]

Not much humid weather here this January, max 25C here today but dp around 12C. Comfortable weather.

[NZ Thunderstorm Soc]

Another fine and blue dome day here with it getting up to 24.9C. NE winds.
Nothing much happening for the first week of the next month, weather-wise sadly.

[Cyclone Tracy]

January 2021 stats locally –

Mean daily temp = 20.7 (1.1c below 2018/20 average)
Rainfall = 45.8mm (21mm below average)
Prevailing wind SW
3 thunder days.
Humidity 71.9% (3.8% below average!)

[Richard]

January 2021 stats
rainfall 68.8
Max temp 34.3deg - 26th
lowest max 16.5deg - 8th
Min temp 4.1deg - 31st
Highest min 15deg - 7th

[ricky]

January 2021 local stats Grey Lynn:

Rainfall = 64.2mm (6.2mm above average)
Mean daily temp = 19.3deg (0.4deg below average)
Max T = 28.2deg - 6th
Min T = 9.3deg - 21st
Low Max = 21.8deg - 20th
High Min =17.7deg - 26th

[Awhituobs]

jan average temperature was average here for me
91mm here...up on average....but no real thanks to la nina?

[David]

Howick - January 2021

Summary
Mostly dry throughout, but ended up wetter than average due to high rainfall on the 2nd. Temperatures about average.

Stats:
Mean temp = 19.9C (+0.0C)
Mean daily high = 25.1C (+0.4C)
Mean daily low = 15.5C (-0.2C)
Highest temp = 27.8C (on day 6)
Lowest temp = 10.6C (on day 21)
Total rainfall= 87.2mm (+20mm, or 130% of average). 61mm of this fell on day 2.
YTD rainfall = 87.2mm

No La Nina signature on the monthly wind rose:

[Nev]

A generally dry January 2021, apart from lower South Island areas, particularly Otago. Temps were also generally mild overall, apart from being a little cooler in the western South Island. Also generally sunny, apart from the northeastern and southern areas of the South Island.

MetService January 2021 Summary - Mountain snow followed by record heat

2021 began with flooding rain and large hail for parts of Canterbury and Otago whilst thunderstorms rumbled across North Island and the upper South Island. Respite came in the form of a brief ridge before a low swept across the Tasman Sea. That was the last unsettled act for a week as high pressure set in, diverting a Tasman low away to the northeast. On the 19th a low in the Southern Ocean brought severe gales, heavy rain, and severe thunderstorms to South Island. Cold air moved in behind this feature delivering summer snow to the mountains. The chill didn’t last though as northwesterlies pushed temperatures to record levels in the east. Ashburton Airport hit its highest ever temperature at 39.3 Celsius on the 26th, Christchurch saw temperatures of 35 Celsius on two consecutive days for the first time ever, Napier hit 35.1 Celsius on the 28th whilst Gisborne Airport and Masterton saw 35.0 Celsius. A southerly change then dropped temperatures before high pressure brought a settled end to the month.

Jan 2021 Climate Anomaly Maps ℅ NIWA.png

Preliminary January 2021 figures for the main centres:

Code: Select all

Jan 2021 Average Temps, Rainfall, Sunshine and departures from 1981-2010 normals ℅ NIWA

Site                     T-max °C      T-min °C      T-mean °C     Rain mm      Sun hrs

Auckland, Mangere       24.1  +0.7    16.1  +0.2    20.1  +0.5     54   88%    280  120%
Auckland Aero           24.7  +1.1    16.2  +0.2    20.4  +0.6     41   61%
Tauranga Aero           25.3  +1.4    15.4  +0.3    20.3  +0.8     17   22%    n/a   n/a
Hamilton Aero           24.6  +0.3    11.8  -0.6    18.2  -0.1     77   93%
Hamilton, Ruakura       25.0  +1.0    12.4  -0.5    18.7  +0.3     77   97%    255  111%
Wellington, Kelburn     20.5  +0.2    14.1  +0.6    17.3  +0.4     33   44%    244   99%
Christchurch Aero       23.1  +0.5    12.2  +0.3    17.7  +0.5     41  115%    230   97%
Dunedin, Musselburgh    19.7  +0.8    12.1  +0.5    15.9  +0.6    106  146%    219  122%
Greymouth Aero          19.1  -0.7    11.9  -0.5    15.5  -0.6    239  114%    214  106%

Edit: MS Summary added

[NZ Thunderstorm Soc]

January 2021 stats from Raukapuka Geraldine

Rainfall 88,5mm
Max temp 38.7deg - Tuesday 26th
lowest max 15.7deg - Friday 8th
Min temp 3.9Cdeg - Friday 29th (Snow on Mt. Peel)
Highest min 17.7deg - Saturday 16th
4 Thunder days.