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Average temperature 9.3°C
Average humidity 88%
Average dewpoint 7.4°C
Average barometer 1012.2 mb
Average windspeed 9 km/h
Average gustspeed 13 km/h
Average direction 294 ° (WNW)
Rainfall for month 239.8 mm
Rainfall for year 741.2 mm
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Maximum rain per minute 1.4mm on day 22 at time 21:12
Maximum temperature 17.0°C on day 19 at time 14:05
Minimum temperature -2.7°C on day 08 at time 08:13
Maximum humidity 100 % on day 31 at time 02:20
Minimum humidity 56 % on day 08 at time 15:32
Maximum pressure 1034.6 mb on day 09 at time 00:13
Minimum pressure 973.9 mb on day 26 at time 00:23
Maximum windspeed 51.8 kmh from 239° on day 23 at time 14:10
Maximum gust speed 64.8 kmh from 116° on day 26 at time 14:08
Maximum heat index 17.0 °C on day 19 at time 14:05
Growing degrees days : 48.7 °C
Wettest: Day 30 - 44.6mm
151.2mm total for the month, with rain falling on 21 days, here in West Melton.
Precipitation was recorded on each day, of the last 14 days of the month.
All the main centres received near to slightly above average temperatures for July, with Auckland the warmest.
Rainfall was well above normal for Auckland, Wellington (the wettest of the main centres), Christchurch, and Dunedin (the driest – or least wet! – of the main centres) and above normal for Hamilton.
All of the main centres received below normal sunshine hours for July, with the sun peeping through the cloud most often in Auckland and least often in Dunedin.
A soggy month almost everywhere. This was the cloudiest month since January 2007 at least [but then almost every month in that interval was sunnier than average]. A certain poster should note that Auckland was the least cloudy of the 5 main centres.
July was amazing for action weather. No complaints at all there. T-storms, flooding, tornadoes, really good frosts, snow to crazy levels, hail. Cant really remember a month so action packed.
We could have done with more wind - as I stated earlier one of the reasons everything is so sodden is the relative lack of drying westerlies. July 2006 was actually wetter but it was windier and much sunnier, also the accumulated rainfall prior to it was less than this time.
j--me--h wrote:July was amazing for action weather. No complaints at all there. T-storms, flooding, tornadoes, really good frosts, snow to crazy levels, hail. Cant really remember a month so action packed.
Yes, you're probably right, so we REALLY must'nt grumble about the weather.
Imagine if a 'blocking high' stayed over the country for a month???
The NZ Thunderstorm Soc will probably have to close down sorry
We actually hardly had that many SW winds in July,so the wind run wasnt so high I thought,Just wished now we could get a week of dry anticyclonic N-NW weather but it will be months away but even some cold frosty weather would be welcome.
j--me--h wrote:July was amazing for action weather. No complaints at all there. T-storms, flooding, tornadoes, really good frosts, snow to crazy levels, hail. Cant really remember a month so action packed.
Yes, you're probably right, so we REALLY must'nt grumble about the weather. Imagine if a 'blocking high' stayed over the country for a month???
The NZ Thunderstorm Soc will probably have to close down sorry
JohnGaul
NZTS
That would be fantastic. Please see to the arrangements.
I recently emailed the Botany weather station owner to find out what station is used because of the 350mm rain total it reported in July (sounds suspect)! Turns out it is a Vantage Pro 2 station used to collect the data - so how can the readings be inaccurate!
It's quite close to here and reports 1017mm rain for 2008, compared to my 874mm. Ricky has a VP2 and only has 618mm for 2008! (huge difference) I've really no clue about this one.
I'll never have anything close to here to compare my readings to, maybe someday I'll have a VP2...
David wrote:I recently emailed the Botany weather station Turns out it is a Vantage Pro 2 station used to collect the data - so how can the readings be inaccurate!
With the Davis tipping buckets you can adjust the screws so the buckets catch more or less rain depending on weight.
I need to recalibrate mine with a manual rain gauge sitting near by the station. (Think it's over reading)
generally though people think out of the box the VP2 underreads by 10% too low for rain
Botany downs is closer to the Hunua ranges than you David, its possible they will be in a higher rainfall zone....but I am surprised its that much more
I am more inline with Ricky for rainfall
the last rain band in July slowed down over south auckland through to waiuku....and south....so I missed out on a large July rain total than the rest of Franklin.,...
Last edited by Manukau heads obs on Fri 08/08/2008 08:23, edited 1 time in total.
I also wonder if gauge-positioning could be a contributing factor. Are there any obstacles nearby that could have a shadowing effect? Gauges mounted at the top of a solid fence or building might also be prone to updrafts in strong winds which could lift rain away from the gauge. I think ideally the standard manual Nylex 1000 gauges were placed in large open grassed areas not far from the ground-level where wind is at its least due to friction.
sorry 
