Anak Krakatau erupts: What it means for SA travellers

If Bali, Lombok or Jakarta feature anywhere on your travel calendar this month, you need to know: Indonesia’s most notorious volcano is having a moment, and it’s throwing regional air travel into chaos.

WHAT’S HAPPENING?

Anak Krakatau, meaning “child of Krakatau,” born from the crater of the volcano that reshaped world history in 1883 — kicked off a major eruptive phase late on 4 September. Since then it’s been putting on a genuinely alarming show: lava fountains, booming rumbles heard for kilometres, and ash plumes rocketing up to 50,000 feet into the sky above the Sunda Strait, the narrow channel between Java and Sumatra.

The volcano remains at Alert Level III — the second-highest rung on Indonesia’s four-level warning scale — with a 3km exclusion zone in force around the crater. The good news, if you can call it that: authorities say there’s no tsunami threat, and the nearest settlement sits more than 16km away.

WHY THIS MATTERS

Ash and jet engines do not mix, and Indonesia’s aviation network has taken a serious hit. Eight airports — including Jakarta’s Soekarno-Hatta, the region’s second-busiest — shut down over the weekend as ash drifted across western Indonesia. By Monday, the transport ministry was reporting more than 1,500 flights cancelled, delayed or diverted, and upward of 270 000 passengers stranded.

Bali’s Ngurah Rai airport has so far avoided a full closure, but it hasn’t escaped unscathed — flights in from Jakarta have been cancelled and schedules shuffled as airlines reroute aircraft around the ash clouds. Medan has also felt the knock-on effects.

The volcano is still active and unpredictable, so more disruption down the line isn’t off the table. Indonesian officials have even floated cloud-seeding to try to rain the ash out of the sky faster.

WHAT THIS MEANS IF YOU’RE PLANNING TO TRAVEL

Flying via Jakarta to connect onward? Build in buffer time, or brace for it. Most South Africans heading to Bali route through Perth, Singapore, or occasionally Jakarta — check which leg of your itinerary passes through affected airspace and confirm directly with your airline rather than assuming your flight is unaffected.

Already booked a Bali or Lombok trip? Nothing suggests you should cancel outright — Bali itself is operating, and there’s no threat to the island. But do keep a close eye on your airline’s app and the airport’s own channels in the days before you fly, since schedules are shifting fast.

Wondering about travel insurance? Cover for weather and natural-disaster disruption typically depends on when you bought the policy relative to the eruption becoming public knowledge — buy it now expecting the volcano to bail you out, and most insurers will treat it as a “known event” excluded from cover. If you already had a policy in place before 4 September, you’re in a stronger position. Either way, keep every receipt for rebooking, meals or accommodation you’re forced to pay for.

Thinking of visiting the volcano itself? Don’t. The exclusion zone is there for a reason, and Anak Krakatau has a well-earned reputation — its 2018 eruption triggered an underwater landslide and a tsunami that killed over 400 people. This isn’t the moment for volcano tourism.

You will not need to entirely scrap your Indonesia plans over this, but flexibility is crucial. Check your specific route, monitor your airline directly rather than relying on general news, and don’t book anything non-refundable until the ash settles — literally.

Take a look at the countries South Africans can travel to without a visa here.