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 Recreational Marine: Christchurch Marine Weather Situation and Forecast issued at 0715hrs Thursday 31-Jul-2025 by MetService NIL for CONWAY Situation: A Tsunami marine advisory is in effect for ALL marine coastal areas including Stewart Island and Chatham Islands. Please refer to https://www.civildefence.govt.nz/ for details and updates. Today, a deep low to the east of the country directs strong southerlies to the east of both islands and a front moves onto the lower South Island late evening. On Friday, a couple of weak fronts embedded in a southerly flow bring showers to mainly eastern parts of northern and central New Zealand, while a ridge of high pressure builds over the South Island from the Tasman Sea. Over the weekend, the ridge remains over the South Island, while east to southeast winds bring showers to eastern parts of the North Island. On Monday, the high shifts to the east of the country. Forecast issued at 0435hrs Thursday 31-Jul-2025 Valid to 7 am Thursday for Inshore waters from Lyttelton Harbour to the Waimakariri River mouth. Thursday: Southwest 15 knots, rising to 20 knots this afternoon. Sea becoming moderate this afternoon. EXPECT STRONG AND UNUSUAL CURRENTS AND UNPREDICTABLE SURGES. Poor visibility in showers, easing this morning. Northeast swell 1.5 metres easing. Outlook until midnight Sunday: Friday: Southwest 20 knots, easing to 15 knots in the morning, then to variable 5 knots in the afternoon. Partly cloudy. Saturday: Becoming northeast 10 knots early. Easing to variable 5 knots in the morning, becoming southwest 15 knots later. Partly cloudy. Sunday: Southwest 15 knots, easing to variable 5 knots early. Becoming northerly 10 knots later. Fine. High tide at Lyttelton: Article © 2025 Metservice, Funded by the NZ Government Data is for information only. New Zealand City disclaims all liability or responsibility for any loss or damage that may result from the action or failure to act by any person in reliance on any information provided herein. |
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