General July Weather

[tornado]

loud thunder now.

[spwill]

Lightning with the thunder about 2 secs later here.

[Brassnz]

Thunder on and off here for the last two hours or so, and some pretty good flashes looking towards the city. Fun times.

[Cyclone Tracy]

It certainly is rumbling. Totals must be moving up nicely south of the harbour. On the edge of it here for the moment.....again.

[NZstorm]

Hail here now.

[David]

Lightning with the thunder about 2 secs later here.

Interesting the thunder was further west while radar shows heaviest rain more east. Really wet out there tonight!

[tornado]

what a good day. hail,thunder,heavy rain. some intresting dark clouds around at 4pm

[NZ Thunderstorm Soc]

How unusual, Auckland getting a thunderstorm

[Richard]

How unusual, Auckland getting a thunderstorm

It will be our turn soon John, so hang in there fella

[Richard]

My July stats
rainfall total 55mm
max high temp 19.3 3/7/2019
max low 13.3 3/7/ "
lowest min -4 7/7/ "
lowest max 7.8 5/7/ "

[Cyclone Tracy]

July 2019 stats –

Mean daily temp = 12.1 (about 1c above normal)
Rainfall = 102.4mm (23mm below local average)
Prevailing wind WSW
1 thunder day.
YTD daily mean temp = 17.08c (Around 1.3c above normal). Still 0.2c less than to 31 July, 2018.
YTD rainfall = 374.6mm. 323mm under average of 697mm to end of July.

No records

[NZstorm]

Ricky's Grey lynn station recorded a mean daily temperature range of 8.4C to 17.2C for July. Exceptionally mild month.

[David]

July 2019 stats for Howick

Mean temp 11.4C
Mean daily max 15.6C
Mean daily min 7.8C
Highest temp 17.8C (3rd)
Lowest temp 1.7C (7th)
Rainfall 157 mm

[NZ Thunderstorm Soc]

I thought I would put July's figures here instead of my weather blog.

Highest Temperature: 17.8C on Wednesday the 3rd
Lowest Temperature: minus 3.3 on the morning of Tuesday the 9th
Total rainfall: 94.8mm
Frosts: 13
Wettest Event: WE of the 20/21st when 65.5mm fell
non Event: Forecasted heavy rain/snow to low levels here 30/31st.

[Nev]

A near record warm July. Christchurch Aero and Dunedin (Musselburgh) recorded their warmest ever July, with some other main centre sites not far behind.

Jul 2019 Climate Anomaly Maps ℅ NIWA.gif

Some very preliminary July 2019 figures for the main centres:

Code: Select all

July 2019 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       15.9  +1.4     7.9  +0.6    11.9  +1.0    140  102%    160  121%
Auckland Aero           15.8  +1.5     8.4  +0.9    12.1  +1.2    146  110%
Tauranga Aero           15.8  +1.3     8.2  +2.1    12.0  +1.7    152  118%    n/a   n/a
Hamilton Aero           15.0  +1.2     5.0  +1.4    10.0  +1.3    126   98%
Hamilton, Ruakura       15.2  +1.4     5.5  +1.5    10.3  +1.4    113   96%    126  100%
Wellington, Kelburn     13.1  +1.7     8.5  +2.2    10.8  +1.9    159  116%    112   94%
Christchurch Aero       13.2  +2.3     2.0  +1.4     7.6  +1.8     86  133%    110   86%
Dunedin, Musselburgh    11.8  +1.8     5.0  +1.9     8.4  +1.9     49   87%     92   83%

[Nev]

Here's NIWA's preliminary, 'July 2019 National Climate Summary'.

New Zealand’s 2nd-warmest July on record

I think NZ's warmest July was in 1998, also with a national average temp of 9.6C, so there couldn't have been much in it…

Similarly, Musselburgh's average temp this July was apparently just 0.02C shy of its 2013 record.

[RWood]

Here's NIWA's preliminary, 'July 2019 National Climate Summary'.

New Zealand’s 2nd-warmest July on record

I think NZ's warmest July was in 1998, also with a national average temp of 9.6C, so there couldn't have been much in it…

Similarly, Musselburgh's average temp this July was apparently just 0.02C shy of its 2013 record.

An information point for future monthlies - Kelburn now has electronic sunshine readings available as well as the manual ones - predictably, in accordance with other site histories, they are significantly higher - by about 48 hours for June & July combined. Might alter the balance in the occasional stupid stories Stuff runs, where they compare cities' and towns' "vital statistics" with no explanation of how they were derived (a lazy recent NIWA effort gave a misleading impression in that respect).