The weather pattern from day to day is dominated by a succession of anti-cyclones, separated by troughs of low pressure, which pass more or less regularly from west to east across the Australia-Tasman Sea-New Zealand area and beyond. In this region there is no semi-permanent anticyclone such as those found in similar latitudes over the Indian Ocean and eastern Pacific Ocean respectively.
The troughs normally have a north-west to south-east orientation and are associated with deep depressions centred far to the south. A typical weather sequence commences with a low-pressure trough approaching from the west. Freshening north-westerly winds prevail with increasing cloud, followed by rain for a period during which winds may reach gale force. The passage of the trough, with its associated cold front, is accompanied by a change to cold south-westerly or southerly winds and showery weather, occasionally with some hail and thunder.
- dating agencies in Kawerau New Zeland.
- THE NEW ZEALAND OFFICIAL YEAR-BOOK, !
- black speed dating events near Pukekohe East New Zeland.
- New Zealand's smart way to date.;
- naked girls Kaiapoi New Zealand-nude swinger women-fuck tonight!
Barometers then rise with the approach of the next anticyclone from the west. Winds moderate and fair weather prevails for a few days as the anticyclone moves across the country. While the sequence just described is very common the situation is frequently much more complex.
The troughs are very unstable systems where depressions readily form, some of which develop into vigorous storms that may pass over New Zealand at any time of the year. Occasionally in summer a cyclonic storm of tropical origin passes over or near New Zealand accompanied by gales and heavy rain affecting mainly northern and eastern districts of the North Island.
The anticyclones vary in size, intensity, and rate of movement. Their centres, on the average, follow a track across the North Island but individual centres may pass either north or south of the country, the more northerly tracks being favoured in spring and the southerly tracks in autumn. At times when little development occurs within the troughs the anticyclones follow each other at intervals of about 6—7 days. The other main factors which influence the climate of New Zealand are, first, its position in the midst of a vast ocean, and second, the shape and topography of the country itself.
Hot air masses from the interior of Australia in summer or freezing air masses from the Antarctic, which occasionally reach New Zealand, retain little of their original character after their long ocean passage. Thus, there is an absence of extreme variations of temperature. On the other hand, since abundant supplies of moisture are supplied by evaporation from the ocean, and depressions are frequent and vigorous, the average precipitation is high.
The chain of high mountains, which extends from south-west to north-east through the length of the country, rises as a formidable barrier in the path of the prevailing westerly winds. The effect is to produce much sharper climatic contrasts from west to east than in the north-south direction. In some inland areas of the South Island just east of the mountains the climate is distinctly continental in character, despite the fact that no part of New Zealand is more than km from the sea. Winds —Winds from a westerly quarter prevail in all seasons, with a general tendency to increase in strength from north to south.
However, considerable local modifications to the general air flow occur during its passage across the mountainous terrain. Approaching the main ranges the flow from the west turns towards the north-east and on descending on the eastern side swings towards the south-east. This results in an increased number of south-westerlies in Westland and predominance of north-westerlies in inland districts of Otago and Canterbury, where strong gales from this quarter occur at times in the late spring and summer.
Daytime sea breezes usually extend from the coast inland for 30 km or more during periods of settled weather in summer. On the Canterbury coast the wind comes most frequently from the north-east, partly because there is a persistent sea breeze from this quarter, but south of Dunedin south-westerlies predominate. Cook Strait, the only substantial gap in the main mountain chain, acts as a natural funnel for the air flow and is a particularly windy locality afflicted by gales from the south-east as well as the north-west. North of Taranaki the general air flow is more from the south-west, and there is a noticeable reduction of windiness in the summer.
A Serious Online Dating Site
An indication of the variation in the frequency of strong winds from summer to winter and in different parts of the country, is given in the next table. These figures were all obtained by the use of anemographs at airports. Rainfall —The distribution of rainfall is mainly controlled by mountain features, and the highest rainfalls occur where the mountains are exposed to the direct sweep of the westerly and north-westerly winds.
The mean annual rainfall see map ranges from as little as mm in a small area of Central Otago to over mm in the Southern Alps. The average for the whole country is high, but for the greater part it lies between and mm, a range regarded as favourable for plant growth in the temperate zone. The only areas with under mm are found in the South Island to the east of the main ranges.
These include most of central and north Otago, and South Canterbury. In the North Island, the driest areas are central and southern Hawke's Bay, Wairarapa, and Manawatu where the average rainfall is — mm a year. Of the remainder, much valuable farm land, chiefly in northern Taranaki and Northland, has upwards of mm.
Over a considerable area of both Islands rainfall exceeds mm a year but, with the exception of Westland, this is mountainous and unoccupied, much of it being forest-covered. For a large part of the country the rainfall is spread evenly through the year. The greatest contrast is found in the north, where winter has almost twice as much rain as summer.
Nz 100 free dating sites
This predominance of winter rainfall diminishes southwards. It is still discernible over the northern part of the South Island but, over the southern half, winter is the season with least rainfall, and a definite summer maximum is found inland due to the effect of convectional showers. The rainfall is also influenced by seasonal variations in the strength of the westerly winds.
Spring rainfall is increased in and west of the ranges as the westerlies rise to their maximum about October, while a complementary decrease occurs at the same time in the lee of the ranges.
John, Kaiapoi 35 y.o. ID7488
Areas which are exposed to the west and south-west experience much showery weather, and rain falls on roughly half the days of the year. Over most of the North Island there are at least rain days days with at least 0. Those areas of the South Island with annual rainfall under mm generally have about rain days a year. In the far south the frequency of rain increases sharply; in Stewart Island and Fiordland rain days exceed a year.
Over most of the country between 55 and 65 percent of the rain days also qualify as wet days 2.
The percentage increases to over 70 in Westland, but in the low rainfall area of inland Otago there are only about 40 wet days a year compared with rain days. On the whole the seasonal rainfall does not vary greatly from year to year, the reliability in spring being particularly advantageous for agricultural purposes. It is least reliable in late summer and autumn, when very dry conditions may develop east of the ranges, particularly in Hawke's Bay. The highest daily rainfall on record is mm which occurred at Rapid Creek, Hokitika Catchment, where the mean annual rainfall exceeds mm.
naked girls Kaiapoi New Zealand-nude swinger women-fuck tonight
Other areas with considerably lower rainfall are also subject to very heavy daily falls; such areas are to be found in northern Hawke's Bay and in northeastern districts of the Auckland Province. By contrast, in the Manawatu district and in Otago and Southland daily falls reaching 80 mm are very rare. Thunderstorms —Thunderstorms are not numerous. Their frequency is greatest in the north and west where thunder is heard on 15 to 20 days a year; east of the ranges except in Gisborne the figure is five or less. Hail —Hail is most frequent in the south-west where it is reported on about 20 days a year, but for the greater part of the country it occurs on about 5 days a year or less.
Most of the hailstones are small, but occasionally large stones cause local damage to glasshouses, and to orchards and market gardens, chiefly in Canterbury and Hawke's Bay. January and February, with approximately the same mean temperature are the warmest months of the year; July is the coldest. Some temperature statistics for selected places are included in the table on climatological averages. As is to be expected, there is a small annual range of temperature difference between mean temperature of the warmest and coldest months.
Frost —It is well known that local variations in frostiness are considerable, even within quite small areas. Gently sloping ground with a northerly aspect tends to be least affected by frost.
Favourable sites in coastal areas of Northland are free of frost, although further inland light frosts occur frequently in the winter months. At Albert Park, Auckland, the screen minimum thermometer 1. Excluding the uninhabited mountainous areas, the most severe winter conditions are experienced in Central Otago and the Mackenzie Plains of inland Canterbury, and on the central plateau of the North Island.
Elsewhere over the North Island the winters are very mild and pastures maintain continuous growth. In both Islands sheep and cattle remain in the open all the year round.
Free online dating site new zealand
Snow —The majority of New Zealanders rarely see snow except on the mountains. The North Island has a small permanent snow field above m on the central plateau, but the snow line rarely descends below m even for brief periods in winter. In the South Island snow falls on a few days a year in eastern coastal districts, and in some years may lie for a day or two even at sea level.
In Westland it does not lie at sea level. The snow line on the Southern Alps is around m in summer, being slightly lower on the western side where the Franz Josef and Fox Glaciers descend through heavy bush to within m of sea level.