General May Weather

[Andy]

I see Wanaka is into its 4th day stuck under valley cloud, temperature not getting above 6C.

Yes fog sitting here for 4 days as well max temp of 3/4 degs

[NZ Thunderstorm Soc]

Another blue dome day after a frosty start this morning. Light NE this afternoon.
Frosty again this evening. minus 1 at 10pm.
Today's maximum was 12.5C.

[David]

Howick - May 2020

Summary:
Rainy weather at the start and end of the month, not quite enough to reach average, making it the 7th consecutive month failing to do so. Temperature was just a tiny bit below the average for the last 10 years.

Stats:
Mean temp = 13.7C (-0.2C)
Mean daily high = 18.0C (-0.1C)
Mean daily low = 9.9C (-0.2C)
Highest temp = 21.6C (4th)
Lowest temp = 3.6C (20th)
Total rainfall= 114.4mm (-7%)
YTD rainfall = 194.0mm (-59%)

[Cyclone Tracy]

Local May stats

Mean daily temp = 14.6 (0.5c below the 2018/19 Ave)
Rainfall = 116.6mm (9mm below 2001-2019 average)
Prevailing wind ENE
1 thunder day.
Air pressure ave 1020.0 hPa. (2.1 hPa above ave)
Humidity 81.0% (1.4% below average)

Year to date

Mean daily temp 0.82c below 2018/19 Ave
Rainfall 182mm , 266mm below 2001-2019 average.

May Records

2020 is the driest start to the calendar year ever recorded (2001-2020).

[jamie]

For the farming season 1 June to 31 May I recorded 895mm average is 1250.


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[Achten]

Stats:

Hawkes Bay Hastings South

Mean temp = 10.4C
Mean max = 18.0C
Mean min = 3.0C
Highest temp = 26.1C
Lowest temp = -4.9C
Total rainfall= 41.6mm
YTD rainfall = 114.0mm
Prevailing wind SW

[NZ Thunderstorm Soc]

For May, 17.2mm of rain was recorded over 6 days.
Maximum temperature for the month was 23.5C on Friday the 22nd.
Coldest morning was minus 2.5C, Thursday the 21st, one of the 12 frosts we had for the month.

[tornado]

stats
91mm of rain
1 thunderstorm day.

highest temp 19c
lowest temp 3 (night low)

[Nev]

An fairly mild May overall, with a few heavy rainfalls in east Northland and the Coromandel, and a little relief for Auckland's water drought, otherwise generally dry, particularly in the SE of the South Island.

May 2020 Climate Anomaly Maps ℅ NIWA.png

Some very preliminary May 2020 figures for the main centres:

Code: Select all

May 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       17.9  +0.4     9.9  -0.5    13.9  -0.1     98   91%    153  107%
Auckland Aero           17.9  +0.5    10.3  -0.2    14.1  +0.1    105   96%
Tauranga Aero           18.2  +0.9     9.2  -0.1    13.7  +0.4     57   52%    n/a   n/a
Hamilton Aero           17.2  +0.4     5.3  -1.1    11.3  -0.3     77   72%
Hamilton, Ruakura       18.6  +1.7     6.1  -0.8    12.4  +0.5     77   79%    153  106%
Wellington, Kelburn     14.7  +0.4     9.9  +0.9    12.3  +0.6    136  123%    146  110%
Christchurch Aero       15.4  +1.1     3.4  -0.3     9.4  +0.4     32   55%    142  102%
Dunedin, Musselburgh    14.0  +1.3     6.0  +0.1    10.0  +0.7      5    8%    132  121%
Greymouth Aero          15.7  +1.2     6.8  -0.3    11.3  +0.5    171   87%    134  130%

Notable May rainfall totals: Whitianga Aero 355mm, Kerikeri Aero 269mm and Whangarei Aero 209mm.

[Richard]

May stats 91.6mm rainfall.
min temp -3.6deg - 18th
highest overnight temp 12 deg - 2th
max 22.6deg - 2nd
lowest day time max 8.2 deg - 29th

[Chris W]

Just 5mm for Dunedin? I haven't been keeping an eye on them but that's pretty low if correct!

[Razor]

22mm here in Halswell for may, nearly all of that falling in the one lot last week

88mm since Dec 18 last year

Like ChCh Aero we had significantly warmer t-Maxs, dragged up especially by the first half of the month. Frosts last week bought the ave back a bit but still above.

All in all dry, warmer and following the trend of the last 6 months to continued drought

[Nev]

Just 5mm for Dunedin? I haven't been keeping an eye on them but that's pretty low if correct!

Yes, I think the 5.4mm at Musselburgh is an all-time low monthly record since records began there in 1918.
Note that the Octagon fared a little better with 12.4mm, as did the airport with 11.4mm.

[Chris W]

Just 5mm for Dunedin? I haven't been keeping an eye on them but that's pretty low if correct!

Yes, I think the 5.4mm at Musselburgh is an all-time low monthly record since records began there in 1918.
Note that the Octagon fared a little better with 12.4mm, as did the airport with 11.4mm.

Wow, and good for Dunners! Well, as long as it doesn't cause drought down there anyway.