Day to Day NSW / ACT weather

Wavey

One of Us
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Jul 3, 2019
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Wollongong, NSW
Used to hate these weekends when I did surf live saving patrols. Cold, wet and windy all day with nothing to do and the bastard duty lifeguard wouldn't close the beach so we could go home.
Since we're talking about a Sydney summer, this must have been an extremely regular occurrence!
 

Belly

Part of the Furniture
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Oct 22, 2003
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South Coast NSW
I'm glad I've got a decent break coming up shortly, it will give me a chance to get on top of the mowing and yard work during the handful of sunny days we get. Weekends not enough in between other commitments. Also can't curse the rain (or continual surf :) ) but it is just so constantly grey on the south coast ATM.
Just scanned the GFS 6 dayer and no let up in sight!
 

Edge72

One of Us
Apr 3, 2020
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Sydney
It is as nuts as i have ever seen it
16377346217765620278559934804164.jpg

Where is this ? This is amazing :)
 
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Steve777

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Jul 4, 2019
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Artarmon, Sydney North Shore
…Looks like we'll start to see a warm and humid period begin from Dec 2, but will see southerlies break up spells of warmth potentially more regularly than we are used to. No 35+ degree day on the horizon at this point though, even in Penrith.
Looking at the models, I think that it’s more a matter of brief warm spells breaking up the Southerlies, with the warm days being cloudy and humid like Wednesday and Thursday.

EDIT: the main cloud band and rain had passed by lunch time, it even brightened up with the Sun attempting to break through. Another rain band passed over late this afternoon. Now it’s cold, cloudy and windy with persistent, annoying light rain / drizzle.
 
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AshestoAshes

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Jul 3, 2019
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Voyager Point NSW
Looking at the models, I think that it’s more a matter of brief warm spells breaking up the Southerlies, with the warm days being cloudy and humid like Wednesday and Thursday.

EDIT: the main cloud band and rain had passed by lunch time, it even brightened up with the Sun attempting to break through. Another rain band passed over late this afternoon. Now it’s cold, cloudy and windy with persistent, annoying light rain / drizzle.
Yh a bit of divergence between GFS and EC what a spell of long-fetch easterlies, looking like it's going to be many cloudy days ahead.
 
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Steve777

One of Us
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Jul 4, 2019
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Artarmon, Sydney North Shore
I didn’t see any rain today. There were a few sunny breaks, especially in the afternoon, but the cloud remained persistent. It was actually clearer on the coast and out to sea.

Here’s the view at Clovelly this afternoon, around 2:15 PM. Those Southerlies have really churned up the ocean. The wind cut right through you.

45-EF62-F4-EC5-C-4265-8-A69-79-C1875-AFAE6.jpg
 

Lady Penelope

One of some lot ...
Ski Pass
Sep 7, 2014
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Canberra
Canberra has had its wettest November on record with 147.8mm to date (around one quarter of our average annual rainfall), and probably the coldest. I can’t remember consistently turning on the heating before at this time of the year. NEWSFLASH - there was a glimpse of the sun today LOL
 

Jac0b

Addicted
Jul 5, 2019
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Western Sydney
I just recorded 3 consecutive days below 20°C, which is insane for this time of year but it didn't even feel out of place in this LaNina, negative IOD infested November despite summer being 3 days away.

Interesting note about December 2011, that month was sandwiched exactly between two significantly warmer months (Nov 2011 was warm and ended with a few 30's and Jan 2012 started with a few 30's). So the prevailing southerly infested weather pattern only lasted 4 weeks there.

We've had 4 weeks of this pattern and it looks to continue for at least another 2 weeks. So December 2011 on steroids.

I cannot wait until this weather pattern flips on it's head and we get some proper strings of heat + storms.
 

Wavey

One of Us
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Jul 3, 2019
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Wollongong, NSW
Just glancing at the forecast and I see another weekend of sub 20°C temps coming up for Wollongong. I can't contain my excitement!! Unfortunately with predicted maximums of 19 on both days, it will be warmer than yesterday's 17.8 and today's 18.3°C max. But I don't mind a slightly warmer weekend though since it will be summer by then. Anyway I really hope this week goes quick so I can enjoy some freezing cold gale force southerly winds and rainy conditions.

Side note for a bit of perspective: July had a warmer max temp for the month than November will (26.1 vs 24.7 at Bellambi Pt).
 

Donza

Dogs body...
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Apr 21, 2004
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Canberra has had its wettest November on record with 147.8mm to date (around one quarter of our average annual rainfall), and probably the coldest. I can’t remember consistently turning on the heating before at this time of the year. NEWSFLASH - there was a glimpse of the sun today LOL
AXS-C places 100mm of Rain for Canberra area from now upto tomorrow at 11pm.
EEk.
 

Jimi

Hard Yards
Sep 10, 2021
57
140
33
Roseville
Side note for a bit of perspective: July had a warmer max temp for the month than November will (26.1 vs 24.7 at Bellambi Pt).
Ridiculous. Less extreme but something I noted - Obs Hill had 3 days over 28C in September but only one this month.

Sometimes extremes can be outliers, but even with a rather sedate threshold of 26C, September (6) still beats November (4).

Obs Hill averaged 26.1C last November.
 

Steve777

One of Us
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Jul 4, 2019
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Artarmon, Sydney North Shore
Geez I wish these cloud bands would give us a break.

If you’re on the coast and wondering what happened to the Sun, you’re not alone. While, by local standards, it hasn’t been particularly wet in Sydney, Sydney Airport has averaged only 1.9 hours of sunshine per day in the ten days November 19 to 28. That’s about 13% of daylight hours. Yesterday and, by the look of things at the moment, today, won’t change that by much. It makes Glasgow, with a year-round average of about 29%, seem positively Mediterranean.

On the other hand, Sydney OH has just recorded two consecutive days without rain, after measurable rain was recorded on each of the previous ten*. Would that me a “Mini drought”?


* Note: for a fairly modest 82 mm. It didn’t rain very efficiently.
 

Donza

Dogs body...
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Apr 21, 2004
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For the last few hours I have had mizzle here with the occasional heavier burst of drizzle.
All under a dull, slate grey, featureless overcast sky and a light sou-easter.

This is some depressingly bleak shite. :crap:
Yeah I drove Wollongong to Frenchs Forest and back. Was wet over at the nearly NBs
That murk extended over most of the basin.
I tried going out west on the M5 to avoid it.
 
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Jac0b

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Jul 5, 2019
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Western Sydney
With November now finishing up, I have recorded the final averages for weather stations in Sydney, Canberra and Bathurst as well as Alice Springs (central Aus), and Marble Bar (Northwest Aus) to show how widespread and significant the negative anomalies has been. Northeast Aus, Southwest Aus and Southern Aus also had impressive negative anomalies but not as significant.

Sydney maximum temperatures
In terms of maximum temperature it has been a very very cold and cloudy November in Sydney (especially the western suburbs). Richmond actually had it's coldest Nov on record, and has over a century of records. There were a handful of days above 25°C.

Richmond actually recorded no days above 30°C which is exceedingly rare for November, with an absolute maximum of just 29.6°C. This is the coolest "hottest day" on record for November. Other stations like Parramatta and Horsley Park were similar in this regard. Very much like Dec 2011.

Sydney sunshine
An average November has 7.5 hours of sun. Daily sunshine has been recorded from Sydney airport since 1990 and this November was the cloudiest November on record as well.

Nov 2021 averaged just 4.9 hours of sun (estimating today's overcast conditions = 2 hours at most). This easily beats the previous low in Nov 1995 with an average of 5.4 hours.

In fact since 1990, just 11 out of 383 months calendar months have averaged less than 5 hours of sunshine. Half those months were Junes, and the rest were either March, April, May or July. Nov 2021 is now number 12, the first month in the second half of the year to achieve this.

4EpTHMf.png
 

Steve777

One of Us
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Ski Pass
Jul 4, 2019
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Artarmon, Sydney North Shore
With November now finishing up, I have recorded the final averages for weather stations in Sydney, Canberra and Bathurst as well as Alice Springs (central Aus), and Marble Bar (Northwest Aus) to show how widespread and significant the negative anomalies has been. Northeast Aus, Southwest Aus and Southern Aus also had impressive negative anomalies but not as significant...

Great stats Jacob.

With regard to Sunshine, 4.9 hours a day represents about 35% of daylight hours. That’s a bit less than Manchester or Glasgow in late Spring (May) - about 38% and 36% respectively.
 

Snow Blowey

Old n' Crusty
Ski Pass
Jan 7, 2004
27,289
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Dubbo NSW
Checking the dam levels and i see Burrendong is up to 145%. It has been spilling at a level which keeps flow well within the river banks since saturday and the level has dropped about 0.15m. Inflows are still north of 15GL/day and release rate of 34GL/day. Barely making any progress. Could get interesting later in the week or next week.
 

Wavey

One of Us
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Jul 3, 2019
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Wollongong, NSW
In fact since 1990, just 11 out of 383 months calendar months have averaged less than 5 hours of sunshine. Half those months were Junes, and the rest were either March, April, May or July. Nov 2021 is now number 12, the first month in the second half of the year to achieve this.
It's even more significant since being November because all those other months have much shorter daylight hours, so I wonder if it was measured in "potential sunshine hours" whether this month would come on top for least percentage of sunshine out of any month on record or at least since 1990.
 

Jac0b

Addicted
Jul 5, 2019
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Western Sydney
It's even more significant since being November because all those other months have much shorter daylight hours, so I wonder if it was measured in "potential sunshine hours" whether this month would come on top for least percentage of sunshine out of any month on record or at least since 1990.
Actually that's an interesting way to think about it. The theoretical maximum sunshine for May/Jun/Jul is 10 hours, and for Nov/Dec/Jan it's just above 13 hours.

Based on percent of maximum sunshine, Nov 2021 is the lowest on record and also the first calendar month since 1990 with below 40% of maximum sunshine hours.

Lowest sunshine months
1. Nov 2021 - 38%
2. Mar 2017, Jun 2013 - 40%
3. Jan 2020, Mar 2000 - 41%
4. Dec 2020, Feb 2002, Jun 1998, Nov 1995, Feb 1992, Apr 1990 - 42%

Dec 2011 actually had 50% of maximum sunshine, and Nov 1999 had 64%! This surprised me a lot.

Highest sunshine months
The sunniest months by percent maximum sunshine are mainly Jul-Sep.

1. Aug 1991 - 90%
2. Jul 2018 - 86%
3. Apr 2006, Aug 1995 - 85%
4. Jul 2013, Sep 1994 - 83%

Since 1990 there have been only 14 calendar months with above 80% sunshine, and only one year has had more than 1 month above 80% - 2017 had 3 of those months - Jul, Aug and Sep.
 

Steve777

One of Us
Ski Pass
Ski Pass
Jul 4, 2019
1,487
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Artarmon, Sydney North Shore
Partly cloudy here with some lengthy periods of sunshine and a light to moderate NE'er. I think that Sydney's East is under a hole in the clouds - maybe the sea breeze causes it? Sydney's West still looks to be under cloud. It's about 24-26 degrees across Sydney. certainly an improvement on recent days.

The models show troughs alternating with SE'ers for the foreseeable future.

EDIT: scattered storm cells have developed between Goulburn and Oberon, more more activity over the Southern Tablelands and Snowys.
 

Donza

Dogs body...
Platinum
Apr 21, 2004
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Partly cloudy here with some lengthy periods of sunshine and a light to moderate NE'er. I think that Sydney's East is under a hole in the clouds - maybe the sea breeze causes it? Sydney's West still looks to be under cloud. It's about 24-26 degrees across Sydney. certainly an improvement on recent days.

The models show troughs alternating with SE'ers for the foreseeable future.

EDIT: scattered storm cells have developed between Goulburn and Oberon, more more activity over the Southern Tablelands and Snowys.
Yeah the illawarra started showery.
The cleared to a sunny break...or hole.
Now back to cloudy with clouds rolling onshore.
Odd.
 

Mcbobbings

Hard Yards
Jul 10, 2019
84
199
83
Macquarie Park NSW
Actually that's an interesting way to think about it. The theoretical maximum sunshine for May/Jun/Jul is 10 hours, and for Nov/Dec/Jan it's just above 13 hours.

Based on percent of maximum sunshine, Nov 2021 is the lowest on record and also the first calendar month since 1990 with below 40% of maximum sunshine hours.

Lowest sunshine months
1. Nov 2021 - 38%
2. Mar 2017, Jun 2013 - 40%
3. Jan 2020, Mar 2000 - 41%
4. Dec 2020, Feb 2002, Jun 1998, Nov 1995, Feb 1992, Apr 1990 - 42%

Dec 2011 actually had 50% of maximum sunshine, and Nov 1999 had 64%! This surprised me a lot.

Highest sunshine months
The sunniest months by percent maximum sunshine are mainly Jul-Sep.

1. Aug 1991 - 90%
2. Jul 2018 - 86%
3. Apr 2006, Aug 1995 - 85%
4. Jul 2013, Sep 1994 - 83%

Since 1990 there have been only 14 calendar months with above 80% sunshine, and only one year has had more than 1 month above 80% - 2017 had 3 of those months - Jul, Aug and Sep.
Biggest surprise out of that list is Jan 2020 being =3rd lowest month for sunshine, and Dec 2019 not being on the list at all for potential sunshine given there was only a few mm of rain that month.
 
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