NZLW MAP DATA YESTERDAY 21/09/2026 Maxima/Maxima OF All Reporting Stations   
Coldest night      TEMP (c)
RANK   Station:   
1   Castle Hill   -0.50
2   Otane   0.3
3   Opotiki   1.2
4   Port Levy   2.2
5   Palmerston North   2.3
6   Marahau, Tasman   2.9
7   Pongakawa   3.3
      
      
WARMEST NIGHT      
RANK   Station:   TEMP (c)
1   Awhitu   11.9
2   Grey Lynn   11.2
3   Taipuha, Northland   10.9
4   Howick   9.6
5   Taupiri   8.5
6   Beachlands   8.1
7   Port Robinson   7.3
      
      
COLDEST DAY      
RANK   Station:   TEMP (c)
1   Arthur's Pass   11.3
2   Palmerston North   13.7
3   Hunua   14.1
4   Taupiri   14.9
5   Brooklyn   15
6   Waikawa Beach   15
7   Eastbourne   15.3
      
      
WARMEST Temp DAY      
RANK   Station:   TEMP (c)
1   Opotiki   25.8
2   Port Levy   21.6
3   Port Robinson   21.4
4   Dunedin   20.7
5   Wairoa   20.4
6   Otane   19.9
7   Castle Hill   19.7
      
      
rainfall for the day      Most
RANK   Station:   RAINFALL (mm)
1   Dunedin   14.2
2   Arthur's Pass   3.3
3   Palmerston North   0.2
4   Brooklyn   0.1
5   Awhitu   0
6   Beachlands   0
7   Bishopdale   0
      
      
MAX WIND   GUST   MAX WIND
RANK   Station:   GUST (km)
1   Arthur's Pass   83.7
2   Bishopdale   78.5
3   Opawa   59.3
4   Brooklyn   56.9
5   Eastbourne   56.3
6   Stewart Island   53.7
7   Awhitu   50.7
      
      
WINDRUN      MOST WIND (km)
RANK   Station:   
1   Pongakawa   1489.4
2   Pongakawa   1489.4
3   Awhitu   482.4
4   Arthur's Pass   385.4
5   Stewart Island   310.8
6   Eastbourne   310
7   Waikawa Beach   297.8
      

   NZLW MAP DATA YESTERDAY 20/09/2026 Maxima/Maxima OF All Reporting Stations   
Coldest night      TEMP (c)
RANK   Station:   
1   Castle Hill   -0.90
2   Arthur's Pass   0.1
3   Port Levy   2.4
4   Bishopdale   2.8
5   Dunedin   2.8
6   Opotiki   3.3
7   Opawa   4
      
      
WARMEST NIGHT      
RANK   Station:   TEMP (c)
1   Grey Lynn   12.7
2   Taipuha, Northland   12.2
3   Beachlands   11.9
4   Awhitu   11.7
5   Howick   11.4
6   Taupiri   10.6
7   Hunua   9.3
      
      
COLDEST DAY      
RANK   Station:   TEMP (c)
1   Dunedin   9.4
2   Stewart Island   11.3
3   Arthur's Pass   11.9
4   Castle Hill   13.1
5   Opawa   13.2
6   Bishopdale   14.2
7   Brooklyn   14.2
      
      
WARMEST Temp DAY      
RANK   Station:   TEMP (c)
1   Opotiki   25.7
2   Pongakawa   19.1
3   Marahau, Tasman   17.3
4   Grey Lynn   16.9
5   Beachlands   16.8
6   Howick   16.7
7   Morrinsville   16.4
      
      
rainfall for the day      Most
RANK   Station:   RAINFALL (mm)
1   Eastbourne   12.2
2   Pakawau   9.4
3   Port Robinson   9.4
4   Opawa   9.3
5   Otane   6.6
6   Palmerston North   6.5
7   Port Levy   4.5
      
      
MAX WIND   GUST   MAX WIND
RANK   Station:   GUST (km)
1   Awhitu   130.8
2   Taupiri   77
3   Grey Lynn   72.2
4   Pakawau   68.5
5   Beachlands   66
6   Taipuha, Northland   64.8
7   Nuhaka   64.4
      
      
WINDRUN      MOST WIND (km)
RANK   Station:   
1   Pongakawa   1302.6
2   Pongakawa   1302.6
3   Awhitu   786.3
4   Nuhaka   518.2
5   Taipuha, Northland   456.1
6   Grey Lynn   441.8
7   Beachlands   392.6

The cold that dominated Antarctica through the 2026 winter was also evident across Australia’s Antarctic network.

Bureau of Meteorology data show Casey, Davis and Mawson all finished winter with below-average temperatures.

Davis posted the largest nighttime departure, averaging -23C (-9.4F) for winter — 2.9C (5.2F) below average. Its mean maximum came in at -15.3C (4.5F), which was 1.7C (3.1F) below average.

Mawson averaged -23.1C (-9.6F) at night, 2.5C (4.5F) below average, while its mean max of -16.1C (3F) ran 1.6C (2.9F) below normal.

At Casey, the winter mean minimum came in at -20C (-4F), 1.3C (2.3F) below average, with daytime maxima averaging -11.9C (10.6F), 1.2C (2.2F) below normal.

The cold was particularly pronounced at Davis, which fell to -36.8C (-34.2F) on July 21.

Casey reached -34.4C (-29.9F), while Mawson dropped to -31C (-23.8F).

All three of Australia’s Antarctic bases finished colder than their long-term averages in both maximum and minimum temperatures.
https://electroverse.substack.com/p/aussie-antarctic-stations-all-logged

Antarctica’s prolonged 2026 cold has continued deep into September.

On Sept 9, I reported that Antarctica (specifically Concordia) had remained below -100F (-73.3C) for four straight days:

Sept. 5: -76.6C (-105.9F)

Sept. 6: -75.7C (-104.3F)

Sept. 7: -76.4C (-105.5F)

Sept. 8: -77.3C (-107.1F)

The run did not stop there.
https://electroverse.substack.com/p/antarctica-logs-100f-cold-for-10

Another Antarctic cold benchmark has fallen, with Baldrick (AWS) plunging to -66C (-86.8F) on Sept 12.

Following a reliability check by ANTMET, the reading has been confirmed as valid.
https://electroverse.substack.com/p/antarctic-station-smashes-september