General September Weather

Archive of NZ Weather & Climate
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.

For today's weather discussion head to: New Zealand Weather & Climate
User avatar
Rogue
Posts: 189
Joined: Sun 14/08/2011 12:35
Location: Kapiti Coast

Re: General September Weather

Unread post by Rogue »

Have been watching a mint CB go up north of Whanganui from my place in Kapiti, Blitzortung picking up some lightning activity on it. Got a timelapse going which I will post tonight if it turns out any good. Should have chased!
User avatar
Rogue
Posts: 189
Joined: Sun 14/08/2011 12:35
Location: Kapiti Coast

Re: General September Weather

Unread post by Rogue »

Anvil on the Whanganui storm today, looking north
You do not have the required permissions to view the files attached to this post.
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland

Re: General September Weather

Unread post by NZstorm »

The 500mb vortex will be over the North Island tomorrow.
You do not have the required permissions to view the files attached to this post.
spwill
Posts: 10072
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland

Re: General September Weather

Unread post by spwill »

Dry for Auckland city today, could see a few towering cumulus showers to the north and south
tich
Posts: 3509
Joined: Sat 15/03/2003 18:32
Location: Christchurch (St Albans)/Akaroa

Re: General September Weather

Unread post by tich »

In Rotorua, saw plenty of cloud buildups yesterday afternoon - looked as if building up to something, but nothing eventuated bar a few scattered showers. (not in city)
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: General September Weather

Unread post by Manukau heads obs »

@Rogue
is that a yacht club across the road...lots of wind instruments on it
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland

Re: General September Weather

Unread post by NZstorm »

Another fine day, 19C to end the month. NIWA UV for Auckland is 'high' now.
User avatar
Nev
Moderator
Posts: 6324
Joined: Tue 07/03/2006 15:24
Location: Waiheke Island, Hauraki Gulf

Re: General September Weather

Unread post by Nev »

A cool September overall. A heavy rain event for the east from Gisborne to Marlborough (and parts of north Canterbury), otherwise dry for most of the South Island and remarkably sunny on the West Coast.
Sep 2015 Climate Anomaly Map ℅ NIWA.gif
Some preliminary September 2015 figures for the main centres:

Code: Select all

September 2015 Average Temps, Rainfall and departures from their 1981-2010 normals ℅ NIWA

Site                      T-max °C       T-min °C       T-mean °C    Rainfall mm

Auckland, Mangere        16.6  +0.3      9.7  +0.1     13.1  +0.1      89   87% 
Auckland Aero            16.1  -0.3      9.5  -0.2     12.8  -0.2     107  118% 
Tauranga Aero            16.1  -0.5      7.6  -0.7     11.9  -0.5      92  109%
Hamilton Aero            15.7  -0.6      6.1  -0.1     10.9  -0.4     163  162% 
Hamilton, Ruakura        16.4   0.0      7.1  +0.4     11.7  +0.2      97  105% 
Wellington, Kelburn      12.3  -1.4      7.2  -0.7      9.7  -1.1     103  105% 
Christchurch Aero        13.4  -1.4      3.4  -0.5      8.4  -1.0      55  135% 
Dunedin, Musselburgh     12.1  -1.1      4.8  -1.1      8.5  -1.0      28   58%
Greymouth Aero           13.4  -0.7      6.3  -0.3      9.9  -0.5     126   60%
Gisborne Aero recorded 183mm, with 131mm of that falling on the 20th and 21st. Similary, Napier Aero recorded 171mm with 97mm of that falling on the same 2 days.
You do not have the required permissions to view the files attached to this post.
User avatar
David
Posts: 7636
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland

Re: General September Weather

Unread post by David »

For Howick, average min 8.8C, average max 16.4C, total rainfall 109mm. Pretty standard figures. Of note was that the coldest temperature was only 5.5C - no particularly cold nights all month.
Image
einzack
Posts: 401
Joined: Sun 12/02/2012 10:21
Location: Rolleston, Canterbury

Re: General September Weather

Unread post by einzack »

The comment about how remarkably sunny it was on the West Coast is not an exaggeration. A stunning September was had, with the last 2 weeks in particular breathtakingly good. I don't have my stats at hand as we're mid-move so it's all packed away, but I believe my average daily max was 16.4°C which is stupidly warm. We also only had 73mm of rain which is virtually zero for these parts, particularly for spring, and when I looked at NIWA's data a week or so back it'll end up being the 2nd driest September since records began in the 1960's.
User avatar
Nev
Moderator
Posts: 6324
Joined: Tue 07/03/2006 15:24
Location: Waiheke Island, Hauraki Gulf

Re: General September Weather

Unread post by Nev »

Here's NIWA's preliminary, 'September National Climate Summary'.

A wet end to the month for eastern North Island.


The national average temp of 9.8C was 0.9C below normal.

The month's highest temp of 25.7C was yet again recorded at Christchurch (Riccarton) on the 16th, and the lowest temp of -7.0C was recorded at Hanmer Forest on the 8th.
Dean.
Posts: 1751
Joined: Mon 10/03/2003 20:29
Location: Ashburton

Re: General September Weather

Unread post by Dean. »

einzack wrote:The comment about how remarkably sunny it was on the West Coast is not an exaggeration. A stunning September was had, with the last 2 weeks in particular breathtakingly good. I don't have my stats at hand as we're mid-move so it's all packed away, but I believe my average daily max was 16.4°C which is stupidly warm. We also only had 73mm of rain which is virtually zero for these parts, particularly for spring, and when I looked at NIWA's data a week or so back it'll end up being the 2nd driest September since records began in the 1960's.
Spent a few days on the Paparoa coastline last weekend north of Punakaiki.Beautiful part of NZ with its own microclimate.Certainly noticed a big difference in warmth after arriving from a drab Canterbury under an easterly flow.
NZ Thunderstorm Soc
Posts: 18895
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: General September Weather

Unread post by NZ Thunderstorm Soc »

Nev wrote:
The month's highest temp of 25.7C was yet again recorded at Christchurch (Riccarton) on the 16th, and the lowest temp of -7.0C was recorded at Hanmer Forest on the 8th.
Not Riccarton again, I think the previous day was much warmer??/ :-w
JohnGaul
NZThS
RWood
Posts: 3745
Joined: Sat 24/01/2004 16:56
Location: Wellington

Re: General September Weather

Unread post by RWood »

Nev wrote:Here's NIWA's preliminary, 'September National Climate Summary'.

A wet end to the month for eastern North Island.


The national average temp of 9.8C was 0.9C below normal.

The month's highest temp of 25.7C was yet again recorded at Christchurch (Riccarton) on the 16th, and the lowest temp of -7.0C was recorded at Hanmer Forest on the 8th.
Regarding the West Coast, again one has to note that the sunshine anomalies are for EWSs versus manual site means, so they look more impressive than they really are. But the like for like comparison should still show a substantial surplus however ...
NZ Thunderstorm Soc
Posts: 18895
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: General September Weather

Unread post by NZ Thunderstorm Soc »

Here are my figures for this month.

Ave temp 7.9°C
Ave Minimum 2.7°C
Ave Maximum 13.1°C
Minimum -2.2°C on the 8th (10 air frosts)
Maximum 23°C on the 15th
Rainfall 73.1mm from 17 days with 21.6mm on 20th, YTD 455.2mm
JohnGaul
NZThS
trickytiger
Posts: 336
Joined: Sat 05/07/2008 10:36
Location: Timaru, New Zealand. 13m asl

Re: General September Weather

Unread post by trickytiger »

Rangitata figures this month:

Avg temp: 7.9°C
Avg Minimum: 2.9°C
Avg Maximum: 13.8°C
Minimum temp:-1.6°C on 22nd
Maximum temp: 23°C on 16th
Rainfall: 21.6mm (12 days of rain, 10.6mm on 1st) YTD 174mm (not complete as recording didn't start at start of year)