{"id":459585,"date":"2026-06-03T23:02:12","date_gmt":"2026-06-03T23:02:12","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/459585\/"},"modified":"2026-06-03T23:02:12","modified_gmt":"2026-06-03T23:02:12","slug":"whats-el-nino-and-how-might-it-impact-nzs-weather","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/459585\/","title":{"rendered":"What&#8217;s El Ni\u00f1o and how might it impact NZ&#8217;s weather?"},"content":{"rendered":"<p class=\"body-paragraph articleLinkText  [&amp;_p]:tit-sub-xl tit-sub-xl md:[&amp;_p]:d-tit-sub-xl md:d-tit-sub-xl mb-[1.3rem]\">We are being told to look out for El Ni\u00f1o in the coming months and for it to peak over our summer. But what exactly does that mean?<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">By Nik Dirga of <a href=\"https:\/\/www.rnz.co.nz\/news\/environment\/597141\/explainer-what-is-el-nino-and-how-it-might-impact-new-zealand-s-weather\" target=\"_blank\" rel=\"nofollow noopener\">RNZ<\/a><\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">The &#8220;climate driver&#8221; is likely to bring <a href=\"https:\/\/www.1news.co.nz\/2026\/06\/03\/well-and-truly-on-its-way-el-nino-very-likely-to-peak-over-nz-summer\/\" rel=\"nofollow noopener\" target=\"_blank\">drier, hotter and windier conditions<\/a> to much of New Zealand.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">In its seasonal climate outlook for June through August, Earth Sciences New Zealand said there&#8217;s a 95% change of El Ni\u00f1o conditions, an even higher outlook than the United Nations&#8217; World Meteorological Organisation, which puts the odds at 80%.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">The UN has also issued a warning, telling the rest of the world to be prepared for the extreme heat El Ni\u00f1o may bring.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">Here&#8217;s a quick refresher on what an El Ni\u00f1o season means.<\/p>\n<p>What is El Ni\u00f1o again?<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">It&#8217;s when ocean waters off the coast of South America warm above average, and trade winds \u2013 the permanent east-west prevailing winds around the Equator \u2013 can weaken or sometimes even reverse.<\/p>\n<p class=\"text-greyDarkFaded\">Meteorologists say, given the strength of the climate event, the country will be impacted this winter.    (Source: 1News)<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">It means the sea in the far western Pacific cools down while the eastern Pacific rises.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;Rain and thunderstorms follow the warm ocean water and cool ocean water promotes dryness of high pressure,&#8221; Earth Sciences NZ principal forecasting scientist Chris Brandolino told RNZ&#8217;s Nights recently.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">That can cause stronger or more frequent winds from the west in summer, and more southerly winds in <a href=\"https:\/\/www.1news.co.nz\/2026\/05\/30\/dan-corbetts-winter-outlook-this-one-could-be-interesting\/\" target=\"_blank\" rel=\"nofollow noopener\">winter in New Zealand<\/a>.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;No El Ni\u00f1o is average &#8211; each comes with a unique set of climate characteristics and therefore can be expected to influence the weather differently,&#8221; Earth Sciences NZ notes on its website.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">El Ni\u00f1o can be seen as a &#8220;climate driver,&#8221; Brandolino said.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;If you know where your air is coming from you have an idea of what your precipitation or your rainfall patterns are going to be, and your temperature patterns,&#8221; Brandolino said.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;At a global scale, El Ni\u00f1o events make for warmer years by raising air temperatures and reducing the rate at which the ocean absorbs heat,&#8221; climate scientist and former Kiwibank New Zealander of the Year Dr Jim Salinger wrote for RNZ recently.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/06\/earth-sciences-new-zealand-seasonal-climate-outlook-for-june-6EPFCNACWFBOHC7TUKLM6YUYAY.jpg\" alt=\"Earth Sciences New Zealand seasonal climate outlook for June to August 2026. Photo: Supplied \/ ESNZ\" width=\"800\" height=\"450\" loading=\"lazy\"\/><\/p>\n<p class=\"ImageMetadata__MetadataParagraph-sc-hi5x8q-0 cWTYyG image-metadata\">Earth Sciences New Zealand seasonal climate outlook for June to August 2026. Photo: Supplied \/ ESNZ <\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">This year&#8217;s El Ni\u00f1o, Salinger notes, will follow &#8220;a rain-soaked start to the year across much of New Zealand, partly owing to the lingering, warm-and-wet influence of El Ni\u00f1o&#8217;s climate driver counterpart: La Ni\u00f1a&#8221;.<\/p>\n<p>Explain to me difference between El Ni\u00f1o and La Ni\u00f1a?<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">If El Ni\u00f1o is hot, La Ni\u00f1a is cool.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">The two have typically swapped back and forth every few years in what&#8217;s known as the El Ni\u00f1o\/Southern Oscillation (ENSO).<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;They&#8217;re naturally occurring climate drivers that take place in the Equatorial Pacific, generally,&#8221; Brandolino said.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">La Ni\u00f1a, which is finishing its latest cycle, usually features strong easterly trade winds and cooler waters in the eastern Pacific and warmer waters in the far western Pacific.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">In New Zealand, that often means lots of northeasterly winds and moist, rainy conditions to northeastern spots in the North Island. But the lower South Island can, conversely, have less rainfall.<\/p>\n<p>So what does this mean for the coming months?<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">We&#8217;re probably going to see less rain and the landslide and flooding events that have hit much of the year so far, but it could also create droughts and heat waves as a result.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;As we move through spring and summer there&#8217;s a distinct possibility where we could see some pretty hot days,&#8221; Brandolino told RNZ today.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">The rain events that have hit from the north this year are expected to be less frequent.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">Earth Sciences NZ&#8217;s climate outlook states that &#8220;rainfall totals for June-August 2026 are about equally likely to be near normal or below normal for the north of the South Island and the west of the North Island&#8221;.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;Rainfall is most likely to be below normal for the remainder of the North Island, and for the east of the South Island. Meanwhile, rainfall is about equally likely to be near normal or above normal for the west of the South Island.&#8221;<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">As for temperatures, Earth Sciences NZ says for the next few months they are most likely to be near average in most places, while it&#8217;s equally likely that parts of the west side of the South Island would be below average and the east of the South Island below average.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">The El Ni\u00f1o patterns are expected to grow stronger, with June seen as a transitional month \u2013 the wet weather this past weekend won&#8217;t be characteristic of the upcoming season, Earth Sciences NZ said.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;Later this winter, this is expected to translate to periods favouring active weather including unusually windy conditions, along with notable temperature variability,&#8221; Earth Sciences NZ writes in its outlook.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">Winter has already started out with some record-breaking high temperatures with nearly 20C seen in Wellington this week.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">That lower winter rainfall will have an effect on water-reliant sectors like farmers.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;Some stand-out events \u2013 such as in 1982-83, 1997-98 and 2015-16 \u2013 caused severe droughts that cost the economy hundreds of millions of dollars,&#8221; Salinger wrote.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">But the impact of El Ni\u00f1o will last longer than the next few months.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;Peak El\u202fNi\u00f1o conditions are expected to occur during the austral summer of 2026-27, with the potential for this event to have significant impacts,&#8221; Earth Sciences NZ writes.<\/p>\n<p>And what about the rest of the world?<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">United Nations agency the World Meteorological Organisation issued a statement warning that the risk of extreme weather is high over the coming months.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;The world must treat it as the urgent climate warning it is,&#8221; UN Secretary-General Ant\u00f3nio Guterres warned.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;El Ni\u00f1o conditions will pour fuel on the fire of a warming world. Impacts will hit even harder, travel even farther, and cross borders with devastating speed.&#8221;<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">Brandolino was interviewed at the end of April by RNZ&#8217;s Nights, and said then that &#8220;for the Northern Hemisphere what&#8217;ll probably happen this summer &#8230; they&#8217;re going to see some pretty spiky temperatures, some pretty intense temperatures I&#8217;m almost certain will make international news.&#8221;<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">And that&#8217;s proven the case, with reports of &#8220;mind-boggling&#8221; heat in Europe just last week.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;We need to prepare for a potentially strong El Ni\u00f1o event \u2013 which will exacerbate drought and heavy rainfall and increase the risk of heatwaves both on land and in the ocean,&#8221; the WMO&#8217;s Secretary-General Celese Saulo said.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;The most recent El Ni\u00f1o, in 2023-24, was one of the five strongest on record and it played a role in the record global temperatures we saw in 2024.&#8221;<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">Salinger wrote that exactly how this El Ni\u00f1o plays out is still uncertain.<\/p>\n<p class=\"body-paragraph articleLinkText  lg mb-4\">&#8220;But coming on the back of the world&#8217;s warmest period on record, it warrants our close attention.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"We are being told to look out for El Ni\u00f1o in the coming months and for it to&hellip;\n","protected":false},"author":2,"featured_media":459586,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[390,273,14940,42,43,40,38,41,39,3393],"class_list":["post-459585","post","type-post","status-publish","format-standard","has-post-thumbnail","category-headlines","tag-climate-change","tag-environment","tag-explainers","tag-headlines","tag-news","tag-top-news","tag-top-stories","tag-topnews","tag-topstories","tag-weather-news"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/459585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=459585"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/459585\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/459586"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=459585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=459585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=459585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}