General September Weather

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Dale
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Re: General September Weather

Unread post by Dale »

Ripper of a day so far after a cool start, makes it 3 in a row now. Managed to get a little sunburnt yesterday afternoon but my fault for lapping up the sunshine.
No wind to speak of today which is the catalyst for me.. flat ocean, snow on the alps behind me, lovely & warm.. happy me :)
melja
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Re: General September Weather

Unread post by melja »

Was a cracker on sunday too Dale when i was over there with the old reverse NWer SE going on, thats a great wind for making power on my wind turbine _b .
Saturday was a shocker tho #-o
Shame it was still light for the fire works in greymouth on sunday night :?:
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David
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Re: General September Weather

Unread post by David »

158 mm for Howick this month. Similar to last September (168 mm).
Beautiful sunny day to end the month.
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Michael
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Re: General September Weather

Unread post by Michael »

Good to see the back of that month but this month probably be the same maybe struggle 18 or 19c instead of 16/17
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Tornado Tim
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Re: General September Weather

Unread post by Tornado Tim »

Mod Note: September is now over folks, I have moved a few posts over to the October Thread as a result.
Use that thread to discuss daily weather etc, summary's and so on, can continue to be posted here.
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Nev
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Re: General September Weather

Unread post by Nev »

A warmer than average September overall. Very wet in some North Island areas (incl. Akld), but dry and very sunny for most of the South Island.
September 2014 Climate Anomaly Map (NIWA).gif
Some very preliminary September 2014 temp and rainfall figures for the main centres:

Code: Select all

Sep 2014 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        17.2  +0.9     10.6  +1.0     13.9  +0.9     140  137% 
Auckland Aero            17.0  +0.6     10.1  +0.4     13.6  +0.6     175  193% 
Tauranga Aero            17.5  +0.9      9.7  +1.4     13.6  +1.2     n/a   
Hamilton Aero            16.9  +0.6      7.0  +0.8     11.9  +0.6     141  140% 
Hamilton, Ruakura        17.5  +1.1      7.8  +1.1     12.6  +1.1     120  131% 
Wellington, Kelburn      14.5  +0.8      8.3  +0.4     11.4  +0.6     134  136% 
Christchurch Aero        14.5  -0.3      2.7  -1.2      8.6  -0.8      32   77% 
Dunedin, Musselburgh     13.4  +0.2      4.9  -1.0      9.1  -0.4      39   80%
Worth noting that Akld ended up with 147 hrs of sunshine - just 4 hrs shy of, or 97% of normal.
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David
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Re: General September Weather

Unread post by David »

Metservice is showing 208mm for Auckland Aero, NIWA shows 175 ?
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Manukau heads obs
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Re: General September Weather

Unread post by Manukau heads obs »

might depend on the daily reset time?
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Nev
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Re: General September Weather

Unread post by Nev »

Correct. As previously mentioned, all NIWA's rainfall figures are from and to 9am on the 1st. Have been for well over 100 years.
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David
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Re: General September Weather

Unread post by David »

Nev wrote:Correct. As previously mentioned, all NIWA's rainfall figures are from and to 9am on the 1st. Have been for well over 100 years.
Oops, completely forgot about that. Looking back at daily readings it was indeed quite wet between midnight and 9am on 1st Sep.
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Re: General September Weather

Unread post by NZ Thunderstorm Soc »

Nev wrote:Correct. As previously mentioned, all NIWA's rainfall figures are from and to 9am on the 1st. Have been for well over 100 years.
It's been interesting in the past, where events, ie., rainfall have occurred at the end of the month where traditional readings are taken at 9am. This giving totals for the 9 hours into the next month.
A lot of modern day readings are taken from midnight to midnight.
I take my readings from 10pm to 10pm.
Any comments on this ?
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Nev
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Re: General September Weather

Unread post by Nev »

Here's NIWA's preliminary, 'September 2014 National Climate Summary'.

A dry month for the South Island with warm and wet conditions in the North.


The national average temp of 10.9C was 0.5C above normal.

The month's highest temp of 24.1C was recorded at Leeston on the 11th, and the lowest of -6.9C was again recorded at Middlemarch on the 28th.

Queenstown recorded its highest September sunshine total since records began in 1930, following on from its sunniest August last month.
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Re: General September Weather

Unread post by RWood »

Nev wrote:Here's NIWA's preliminary, 'September 2014 National Climate Summary'.

A dry month for the South Island with warm and wet conditions in the North.


The national average temp of 10.9C was 0.5C above normal.

The month's highest temp of 24.1C was recorded at Leeston on the 11th, and the lowest of -6.9C was again recorded at Middlemarch on the 28th.

Queenstown recorded its highest September sunshine total since records began in 1930, following on from its sunniest August last month.
NIWA haven't got the message geographically yet - the Queenstown value, while very impressive, was set at the Aero site with an EWS. The town site's 1958 value of 208 might translate into a higher % of the possible, even with the slight disadvantage of being a manual measurement.
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Nev
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Re: General September Weather

Unread post by Nev »

You might also find these media gaffs amusing… :crazy:
The nationwide average temperature in September was 10.9 degrees above the 1971-2000 September average from Niwa's seven station temperature series which began in 1909).
- The Timaru Herald (Stuff), 04/10/2014

The data from Niwa shows September was mild for the majority of the country with only coastal Otago experiencing below average temperatures.
- NZCity, 4 October 2014
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