Easter 2026 Travel Update: Full moon spring tides along South Africa’s coast

If you’re heading to the South African coast this Easter weekend, take note: the National Sea Rescue Institute (NSRI) warns that a full moon spring tide—peaking on Thursday, 02 April 2026—will bring higher-than-normal tides, stronger currents, and increased coastal hazards for several days. 
This natural phenomenon occurs when the sun, moon, and Earth align during the full moon phase, amplifying the gravitational pull on the Earth’s oceans.

What travellers should expect

• Higher high tides reaching further up beaches
• Lower low tides exposing more shoreline
• Stronger rip currents, especially in the late afternoon and evening

Key risks to keep in mind

• Powerful rip currents at popular swimming beaches
• Dangerous tidal flows in areas like Knysna Heads
• Coastal paths and hikes cut off at high tide
• Unexpected waves affecting anglers on rocks and shorelines

Essential safety tips for Easter travellers

• Swim only at lifeguard-patrolled beaches and stay between the flags
• Check weather updates from the South African Weather Service and local tide tables
• Plan coastal walks and hikes around low tide
• Keep a safe distance from the water when fishing
• Always supervise children and avoid alcohol near water
• For boating or paddling, wear life jackets and use the NSRI SafeTRX app

Spring tide conditions will persist throughout the long weekend—so plan ahead, stay alert, and enjoy South Africa’s coastline safely.

 

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Hartbeespoort Dam: NSRI issues urgent safety warning as water hyacinth chokes!

The South African National Sea Rescue Institute (NSRI) has issued a strong alert to the public regarding hazardous conditions at Hartbeespoort Dam, where rapidly spreading water hyacinth is creating dangerous and unpredictable circumstances for anyone considering launching boats or watercraft.

Hartbeespoort Dam, located in South Africa’s North West Province near the town of Hartbeespoort and roughly an hour from both Johannesburg and Pretoria, is one of the country’s most popular recreational water bodies. Nestled between the Magaliesberg mountain range, it attracts thousands of visitors for boating, fishing, and water sports. However, recurring water hyacinth infestations have become a major environmental and safety challenge.

(c) NSRI

Vast sections of the dam are now blanketed by thick mats of floating hyacinth, which are expected to expand significantly in the coming summer weeks. Seasonal growth, combined with frequent and sudden wind shifts, is causing these dense clusters to drift quickly across the water - transforming previously navigable channels into blocked or impassable routes within minutes.

Key dangers linked to current hyacinth conditions at Hartbeespoort Dam:

• Watercraft becoming trapped in dense vegetation and unable to return to shore.
• Engines overheating or failing due to tangled plant material and hidden debris.
• Concealed hazards such as illegal fishing nets or submerged objects caught within the hyacinth.
• Sudden wind changes pushing large hyacinth mats across the dam, cutting off escape routes.

While NSRI crews remain on standby for critical emergencies, the organisation stresses that conditions are severely compromised and should not be underestimated.

If you still choose to launch a boat, NSRI advises you to:

• Check the latest weather and wind forecasts before departure.
• Closely monitor hyacinth movement before and during your trip.
• Share your planned route and return time with someone on land.
• Carry sufficient supplies and protective gear in case you become stranded.
• Keep a charged mobile phone in a waterproof pouch, wear a lifejacket at all times, and log your journey using the NSRI SafeTRX app.

The NSRI urges all visitors to exercise extreme caution as Hartbeespoort Dam faces one of its most challenging hyacinth surges in recent years.

 

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South Africa: The NSRI releases a "full moon Spring tide safety alert"!

The National Sea Rescue Institute (NSRI), a voluntary non-profit organization tasked with saving lives through drowning prevention in South Africa, has released a full moon Spring tide safety alert. The NSRI, together with South Africa's emergency services, is appealing to bathers, boaters, paddlers, sailors, shoreline anglers and coastal hikers to be cautious around the coastline as the full moon Spring tide causes the daily 2 high tides to be higher than normal and the daily 2 low tides to be lower than normal. This Spring tide peaks on 22 June 2024.

(c) www.nsri.org.za

 

The affect that Spring tide has on the coast, caused by the gravitational effect that the moon has on the earth – causing the 2 daily high tides to be higher than normal and the 2 daily low tides to be lower than normal, – will already be noticeable around the coastline increasing in intensity towards the full moon peak, on 22 June 2024, and then gradually declining in intensity towards the middle of next week.

South Africa: Increased shark activity along the coastline of the Southern Cape & the Eastern Cape!

South Africa's National Sea Rescue Institute (NSRI), a voluntary non-profit organization tasked with saving lives through drowning prevention in South Africa, local Municipalities along the Southern Cape and Eastern Cape coastline and marine authorities  are appealing to coastal users, in particular bathers, paddlers, surfers, body boarders and kite boarders, to exercise caution due to increased inshore shark activity. According to the NSRI, over the past weeks and more recently increased shark activity has been noticed along the Southern Cape coastline from Mossel Bay to Plettenberg Bay and the Eastern Cape coastline from Storms River, Tsitsikamma, to Jeffrey's Bay. A large shark, for instance, was spotted in the breaking surfline at Secrets Beach across Commercial Marine (Jeffrey's Bay) on 25 May 2022. Surfers cleared the water without incident.

Plettenberg Bay: Great White Shark spotted in Keurbooms River! (video)

South Africa's National Sea Rescue Institute (NSRI), a voluntary non-profit organization tasked with saving lives through drowning prevention in South Africa, and the Bitou Municipality are warning the public of a 3.5-metre Great White Shark that was spotted in the Keurbooms River in Plettenberg Bay on 18 May 2022. The shark was discovered by the NSRI Plettenberg Bay duty crew during a routine exercise in the evening hours about 300 meters upstream of the Keurbooms River Mouth - about half way between the river mouth and the N2 bridge. According to Jaco Kruger, NSRI Plettenberg Bay station commander, marine scientists of the SA Shark Incident Committee suspect the shark may be ill or disorientated.

"But the warning is a precaution to alert the public of the presence of a shark in the Keurbooms River and a reminder that at this time of year sharks are known to feed inshore along the coastline and increased shark activity has been noticed along the Plettenberg Bay coastline." Jaco Kruger, NSRI Plettenberg Bay station commander.