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 Recreational Marine: Christchurch Marine Weather Situation and Forecast issued at 2030hrs Wednesday 16-Apr-2025 by MetService Nil for CONWAY Situation: Cyclone Tam is expected to move southwards into the Tasman Sea tonight. Strong northeasterly winds, reaching severe gale with gusts to 120 km/h, and heavy rain are expected for parts of the upper North Island tonight and tomorrow. Meanwhile, a ridge moves eastwards off the South Island. Cyclone Tam continues to move slowly southwards over the Tasman Sea on Good Friday and during the weekend. A moist northeasterly flow associated with the cyclone covers New Zealand during most of the period, but southeasterlies develop over the southern South Island on Sunday. Forecast issued at 1628hrs Wednesday 16-Apr-2025 Valid to 8 pm Wednesday for Inshore waters from Lyttelton Harbour to the Waimakariri River mouth. Wednesday: Northeast 20 knots. Sea moderate. Cloudy. Chance of a light shower. Easterly swell half a metre. Thursday: Easterly 20 knots easing to 15 knots in the afternoon. Moderate sea easing in the afternoon. Fair visibility in occasional rain or drizzle. Easterly swell half a metre rising to 1.5 metres. Outlook until midnight Sunday: Friday: Northeast 20 knots, easing to easterly 10 knots late. Showers, clearing. Northeast swell 1 metre developing. Saturday: Northeast 15 knots. Rain, clearing. Easterly swell 1 metre dying out. Sunday: Northeast 10 knots, easing to variable 5 knots early. Becoming southwest 15 knots later. Partly cloudy. 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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