General September Weather

[NZ Thunderstorm Soc]

Basically, a fine day.
Some overthrow rain this morning (1mm here from this ) but really it was a fine and sunny blue dome day.
NW winds gusty for a time early this morning and also this afternoon.
Some cloud this afternoon moving from the west to the east of the Cu type.
Today's maximum was 20.1C.

[NZ Thunderstorm Soc]

Apart from the rain later this morning, it was basically a fine day with cold NW winds changing more to the SW to south from around 4pm.
Despite the low surface hPa and a bit of heating, there was no trigger to activate anything substantial.
It was cold this morning with single figure digits until the cold snowy layer above dissipated around noon.
Total rainfall for today was just 3.4mm
Today's maximum was 15.5C when the cold winds dyed down around 2pm.
Cold evening with it being calm and clear at 10pm with a temperature of 1.2C.

[NZ Thunderstorm Soc]

A fine but cold day here in Geraldine.
The wind chill of the SW breezes were rather cold but it was very warm in my conservatory.
Some Cu humulus moving across.
Today's maximum was 10C.
Cold again this evening. nort @ 10pm.

[Awhituobs]

Had a great catchup with Richard at a pub here in Hanmer springs
Covid was only mentioned once lol

[NZ Thunderstorm Soc]

After a good, but earlier frost this morning, it turned out to be a pleasant day with the cold SW winds gradually dying away as the day wore on.
Quite mild in the sun with today's maximum getting up to 17.8C.

[Cyclone Tracy]

Local September stats

Mean daily temp = 13.4 (0.1c below the 2018/19 Ave)
Rainfall = 32mm (73mm below 2001-2019 average) - MetService North Shore 31.2mm
Prevailing wind SW
0 thunder days. (1.5 below average)
Air pressure ave 1020.4hPa. (6.2 hPa above ave)
Humidity 75.2% (2.7% below average)

Year to date running totals

Mean daily temp 0.25c below 2018/19 Ave
Rainfall 551.2mm , 315mm below 2001-2019 average.

September record: Driest by 25mm

[Richard]

September was a wet month with 102mm, first time over the 100 mark for this weather station.

Temperatures - max 19.3deg 8th

lowest max 9.1deg 15th

low -4.1deg 30th

warmest min 12.4deg 14th

[Razor]

Just 22mm for us in Halswell. Yet another bone dry month really among a very dry year, with only 250mm from three quarters of the whole year.

[David]

Howick - September 2020

Summary:
Showery periods through the month without any significant falls, resulting in an unusually dry September (driest in my records, just beating Sep 2018 by 3mm). Temperatures near average.

Stats:
Mean temp = 12.7C (+0.0C)
Mean daily high = 17.2C (+0.2C)
Mean daily low = 8.5C (-0.5C)
Highest temp = 21.9C (25th)
Lowest temp = 1.6C (4th)
Total rainfall= 54.8mm (-73mm, or 43% of average)
YTD rainfall = 612.2mm (-407mm, or 60% of average)

[Nev]

Back to a dry Sep here, after managing to top our tanks up over a fairly wet winter.

Waiheke September 2020 Stats
Highest T-max ... 20.9°C (25th)
Lowest T-min ..... 2.9°C (4th)
Mean T-max ...... 17.4°C
Mean T-min ...... 10.1°C
T-mean .......... 13.7°C
Rainfall ........ 30.6mm
7 wet days (1.0mm or more)

[Nev]

September 2020 ended up a generally warm and sunny month for most, very dry for the upper North Island and south Canterbury/Otago, but fairly wet for the lower North Island and most other parts of the South Island.

Sep 2020 Climate Anomaly Maps ℅ NIWA.png

Some preliminary September 2020 figures for the main centres:

Code: Select all

Sep 2020 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       16.6  +0.3     9.5  -0.1    13.1  +0.1     43   42%    186  123%
Auckland Aero           17.0  +0.6     9.6  -0.1    13.3  +0.3     44   49%
Tauranga Aero           17.2  +0.6     8.6  +0.3    12.9  +0.5     28   33%    n/a   n/a
Hamilton Aero           16.3   0.0     6.5  +0.3    11.4  +0.1     72   71%
Hamilton, Ruakura       17.7  +1.3     6.4  -0.3    12.0  +0.5     65   71%    167  114%
Wellington, Kelburn     13.4  -0.3     8.5  +0.6    10.9  +0.1    196  200%    196  120%
Christchurch Aero       16.7  +1.9     3.1  -0.8     9.9  +0.5     35   86%    260  153%
Dunedin, Musselburgh    15.0  +1.8     5.5  -0.4    10.2  +0.7     23   48%    185  138%
Greymouth Aero          14.4  +0.3     6.5  -0.1    10.5  +0.2    227  109%    160  121%

Edit: Wgtn & Chch's sunshine updated.

[NZ Thunderstorm Soc]

Stats from here in Raukapuka.

Ppt - 71.8mm over 10 days
Min - minus 4.2C (Wednesday the 30th)
Max - 24.1C (Wednesday the 23st)
Highest minimum - 7.7C (Friday the 25th)
Lowest maximum - 10C (Tuesday the 29th)
10 frosts, also one snow day, the 1st.