General July Weather

[Bradley]

A crazy overnight low of 9c here in Christchurch, heading for 15c today. Very nice change to wake up to at the end of July. Really feels like winter's grip is relenting.

Last two winters its been the end of July when there's been that switch to spring like. If we get through this winter with no snow on the ground that will make five years in a row, at 243 masl the Amuri basin every year had snow, most years more than once, climate change will mean snow as going to become a rare event. Hasnt been a hard frost since 2012.

This is your post from May 2015 Richard where you state you had a "hard frost". You also had 2 frosts in July 2015 where you state you got down to -9C. I mean I know you are one of these people who love talking about man-made climate change but why do you feel the need to exaggerate your own facts?

"Hard frost again with -7.5 deg You seem to get a lot colder on calm clear nights then what I get even though I'm hard up against mountains and at a higher elevation.. Was -5.6 this morning and -3.4 now. Has been below freezing"

[Awhituobs]

I mean I know you are one of these people who love talking about climate change

and he is in good company with climate scientists around the world

[Nev]

This is your post from May 2015 Richard where you state you had a "hard frost". You also had 2 frosts in July 2015 where you state you got down to -9C. ...

"Hard frost again with -7.5 deg You seem to get a lot colder on calm clear nights then what I get even though I'm hard up against mountains and at a higher elevation.. Was -5.6 this morning and -3.4 now. Has been below freezing"

Moot points, but Richard only wrote the first few words of that 'quote'. The rest was a reply from matttbs (Mayfield ?).
And I think it was 2 consecutive mornings of "-10deg" that Richard mentioned in mid July 2015.

Hard frost again with -7.5 deg

You seem to get a lot colder on calm clear nights then what I get even though I'm hard up against mountains and at a higher elevation..

Was -5.6 this morning and -3.4 now. Has been below freezing since 5.20pm

[NZ Thunderstorm Soc]

A day of thick high cloud with hardly any wind.
Today's maximum was 13.1C.

[Richard]

Sorry thought that 2012, I'll change that to 2015 was the last of the heavy frost along with the last snowfall

[Richard]

I mean I know you are one of these people who love talking about climate change

and he is in good company with climate scientists around the world

And why shouldn't it be when what was predicted as far back as the 1970's, which it is and at an ever increasing rate.

[NZ Thunderstorm Soc]

Coming onto rain here, now, when no rain is foretasted until about the 9th of August?

[Richard]

Coming onto rain here, now, when no rain is foretasted until about the 9th of August?

Wont be much John.

Noticed the weeping willows turning green today, same time as the last three years but two weeks earlier than it was say 30 years ago

[NZ Thunderstorm Soc]

Coming onto rain here, now, when no rain is foretasted until about the 9th of August?

Wont be much John.

Noticed the weeping willows turning green today, same time as the last three years but two weeks earlier than it was say 30 years ago

It wasn't.
One or 2 things coming alive in the garden. Snowdrops are out plus the Daphne is coming along.
Noticed too, Old Man's Beard is flourishing along the trees in the local riverbeds at the moment. [-X

[NZ Thunderstorm Soc]

Another day of thick high cloud with some light rain this evening.
Light this afternoon was rather dull due to the thickness of the cloud.
Hardly any wind.
Today's maximum was 14C. 0.4mm of rain this evening.

[Richard]

July stats-
A dry month with 18mm
Max temp - ..... 17.9 20th
lowest max- ..... 6.5 17th
lowest min- ..... -3.4 3rd
highest min- ...... 8,6 12th

[Cyclone Tracy]

Local July stats

Mean daily temp = 11.9 (0.1c above the 2018/19 Ave)
Rainfall = 88mm (36mm below 2001-2019 average)
Prevailing wind ENE
0 thunder days. (1 below average)
Air pressure ave 1017.7 hPa. (2.2 hPa above ave)
Humidity 83% (2.9% below average)

Year to date

Mean daily temp 0.36c below 2018/19 Ave
Rainfall 412.6mm , 277mm below 2001-2019 average.

July Records :
No records

[David]

Howick - July 2020

Summary:
A showery kind of month with rain on plenty of days but often in small doses. Warmer than usual.

Stats:
Mean temp = 11.4C (+0.8C)
Mean daily high = 15.3C (+0.5C)
Mean daily low = 8.0C (+0.9C)
Highest temp = 18.5C (20th)
Lowest temp = 1.3C (3rd)
Total rainfall= 82mm (-40%)
YTD rainfall = 440mm (-39%, or 286mm below avg)

[NZstorm]

Grey Lynn average daily range 8.0C to 15.6C. Total precip 107mm.

[NZ Thunderstorm Soc]

For July, the rainfall total we received here, was just 12.3mm over 11 days.
The month's maximum temperature was 18C on Tuesday the 21st.
The month's minimum was minus 4.2C on the morning of Friday the 3rd.
Highest minimum was 6.5C overnight Mon/Tues 20 and 21st
Lowest maximum was 6.1C on Thursday the 16th.
15 frosts down here in Raukapuka.

[Nev]

Waiheke July 2020 Stats:
Highest T-max ... 17.7°C (13th)
Lowest T-min ..... 3.6°C (3rd & 10th)
Mean T-max ...... 15.3°C
Mean T-min ....... 9.1°C
T-mean .......... 12.2°C
Rainfall ........ 69.0mm
15 wet days (1.0mm or more)

Although rainfall was relatively low this July, June's 226mm means our winter so far is currently well above normal.

[Nev]

July 2020 was another relatively dry and very warm month overall.

Jul 2020 Climate Anomaly Maps ℅ NIWA.png

Some very preliminary July 2020 figures for the main centres:

Code: Select all

Jul 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       15.3  +0.8     8.0  +0.7    11.6  +0.7     94   69%    116   88%
Auckland Aero           15.3  +1.0     8.1  +0.6    11.7  +0.8     92   69%
Tauranga Aero           14.8  +0.3     6.9  +0.8    10.9  +0.6     85   66%    n/a   n/a
Hamilton Aero           14.3  +0.5     4.2  +0.6     9.3  +0.6    106   82%
Hamilton, Ruakura       15.4  +1.6     4.3  +0.3     9.9  +1.0     94   80%    116   92%
Wellington, Kelburn     12.2  +0.8     6.9  +0.6     9.6  +0.7     59   43%    148  125%
Christchurch Aero       11.5  +0.6     1.2  +0.6     6.4  +0.6     67  103%    120   94%
Dunedin, Musselburgh    10.6  +0.6     3.7  +0.6     7.2  +0.7     70  123%    114  103%
Greymouth Aero          13.2  +1.1     4.5  +0.4     8.9  +0.8    170   86%    119  110% 

Edit: Wgtn & Chch sunshine figures updated. Also note that Wgtn's manual sunshine readings have now been replaced by AWS readings, which are generally a little higher.


Notable July rainfall totals:
489mm - Kaikohe (259%)
459mm - Kerikeri Aero (224%)
452mm - Whangarei Aero (267%)

Notable 24 hour rainfalls:
262mm - Kaikohe (to 9am 18th)
251mm - Whangarei Aero (to 9am 18th)
214mm - Kerikeri Aero (to midnight 17th)

Notable 1 hour rainfalls:
57mm - Kaikohe (to 4am 18th)
51mm - Whangarei Aero (to 10pm 17th)
50mm - Whangarei Aero (to 7pm 17th)
46mm - Kerikeri Aero (to 5am 17th)