Lightning is the weather risk most likely to damage a boat in Panama. IMHPA counts about 500 strikes a day on average, most of them in the May–November rainy season. No system makes a boat strike-proof. A proper grounding and bonding system gives the strike a safe path to the water, and good habits protect the electronics and the people aboard.
How big the risk is in Panama
Panama's weather institute, IMHPA, puts the national average at about 500 lightning strikes a day. It estimated more than 334,000 discharges in the first months of 2025, with May the busiest month at about 117,000, and it expected activity to rise again in October and November. Panama City and Colón province were among the most active areas. By late September 2025, SINAPROC had counted 13 deaths from lightning that year. These figures were reported by TVN.
Panama has no boat-specific claims data. The best guide is from the United States. Ten years of BoatUS insurance claims showed about 0.9 lightning claims per 1,000 boats a year nationally, with Gulf Coast and south-eastern states such as Florida well above that. The risk depends on the boat:
| Boat type | BoatUS claims per 1,000 boats |
|---|---|
| All boats (US average) | 0.9 |
| Monohull sailboats | 3.8 |
| Multihull sailboats | About twice the monohull rate |
| Boats 40–65 ft | About 6 |
| Runabouts, bass boats, pontoons | 0.1 |
More than 75% of those claims were for less than 30% of the boat's insured value, and most involved electronics. Tall masts raise the odds. That matters at La Playita and Shelter Bay, where many sailing yachts wait to transit the canal.
How a lightning protection system works
The American Boat & Yacht Council (ABYC) standard E-4, now a technical information report, and the US fire code NFPA 780 describe the same idea: give the strike a short, direct path from the top of the boat to the water, away from people and wiring.
- Air terminal: a metal rod at the highest point, or a metal mast that serves as one. It creates a cone-shaped zone of protection below it.
- Down conductor: a heavy conductor running as straight and vertical as possible to the water.
- Ground plate: a metal plate below the waterline. NFPA 780 asks for at least 1 sq ft of contact area, with no thick coating on it.
- Bonding: large metal objects near the conductor, such as engines, tanks, shrouds and winches, are connected to the system so the strike doesn't jump to them.
ABYC itself says no system guarantees against damage or injury. Dissipator brushes sold to prevent strikes give little real protection, according to Practical Sailor. Have a marine electrician check the system and the bonding before each rainy season. See choosing mechanics, electricians and yards, and for wiring and batteries in heat, electrical systems and batteries.
Protecting the electronics
Even a nearby strike can induce a surge strong enough to kill a chartplotter, radar or autopilot. To limit the damage:
- Switch off the battery switches and shore power when you leave the boat.
- Unplug antenna leads and power to the VHF, radar and plotter where the connectors allow it.
- Fit surge protection on shore power and lightning arresters on antenna feed lines.
- Keep a handheld VHF, a handheld GPS and a phone in the oven or a metal box during a storm, so a backup survives.
- Back up waypoints, routes and settings so a replacement unit is quick to set up.
Replacement electronics often have to be imported, which can take weeks. Having a backup on board matters more here than in Florida.
Keeping people safe
SINAPROC's advice is to get out of and away from the water during a storm, and it warns that lightning can strike without rain. On a boat:
- Plan to be in port or at anchor by mid-afternoon in the rainy season.
- If caught out, stay low and inside the cabin, keep arms and legs inside, and don't touch the mast, shrouds, wheel or any part of the protection system.
- Keep people off the bow and out of dinghies. Stop fishing, swimming and diving.
- Finish anchoring or reefing before the storm reaches you.
Squall tactics and the go/no-go call are covered in lightning and squalls.
What to check after a strike
A strike can leave damage you can't see from the deck, including at the point where it left the hull.
- Check the bilge for water at once. A strike can crack a through-hull or blow out a small hole below the waterline.
- Check the compass against a handheld GPS. Strikes can change its deviation.
- Test every electronic and electrical system, including the bilge pumps and the engine charging.
- Look for burn marks on wiring, bonding straps and the ground plate.
- Have a diver or a haul-out inspect the hull, through-hulls and running gear.
Photograph everything, note the date and time, and call your insurer before you start repairs. Claims are covered in filing a boat insurance claim in Panama. Log the strike and the repairs in your maintenance records. A future buyer or surveyor will ask.
Check your policy
Read the lightning wording in your policy before May. Ask whether electronics are covered at replacement value, what the deductible is, and whether the insurer asks for a protection system or a survey. Coverage in Panama is covered in boat insurance in Panama.
Your practical starting checklist
- Have a marine electrician check the bonding and any lightning protection system before May.
- Fit surge protection on shore power and arresters on antenna leads.
- Switch off batteries and unplug key electronics whenever you leave the boat.
- Keep a handheld VHF and GPS in a metal box or the oven during storms.
- Be in port or anchored by mid-afternoon in the rainy season.
- After any strike, check the bilge, compass and electronics, then call your insurer.
Frequently asked questions
How common is lightning in Panama?
Very common. IMHPA reports about 500 strikes a day on average, with most activity in the May–November rainy season. May, October and November are busy months.
Can a lightning protection system stop my boat being hit?
No. It gives the strike a safe path to the water, which reduces damage and risk to people. ABYC says no system guarantees protection.
What should I check after my boat is struck?
The bilge for water first, then the compass, electronics, wiring and bonding. Have the hull and through-hulls inspected, and call your insurer before repairs.
Are sailboats more likely to be struck?
Yes. BoatUS claims data shows monohull sailboats at about 3.8 claims per 1,000 a year, against 0.1 for small runabouts. Multihulls are higher still.
¿Qué hago con la lancha durante una tormenta eléctrica en Panamá?
Regrese a puerto o fondee antes de media tarde. Si la tormenta lo alcanza, quédese dentro de la cabina, no toque metal ni el mástil, desconecte la electrónica y suspenda la pesca y el buceo, como recomienda el SINAPROC.
The next question to answer
Weather decisions and tactics on the water. Read Lightning and squalls: Panama's real weather risk.
Covers, drains, mould and lightning, May to November. Read Rainy-season boat prep.
Wiring, charging and battery care. Read Electrical systems and batteries in heat.
Official resources
Use the relevant Panamanian authority for current requirements and fees. These resources are the next place to check; a practical recommendation is not an agency determination.
- TVN (secondary): IMHPA lightning figures and SINAPROC advice, 29 Sept 2025 ↗
- Claims Journal (secondary): BoatUS 10-year lightning claims analysis, Feb 2015 ↗
- ABYC E-4 Lightning Protection (ANSI preview) ↗
- Practical Sailor (secondary): Lightning protection 101 ↗