Traveler’s Diarrhea and Surf Travel
Traveler’s diarrhea is one of the most common illnesses affecting surfers abroad. Learn how contaminated food, water, and even seawater exposure can increase your risk and what to do if symptoms develop during a surf trip.
Why Surfers Are at Risk
Most travelers think food is the primary source of illness, but surfers face an additional challenge: swallowing ocean water.
Studies show surfers ingest significantly more water than swimmers, increasing exposure to bacteria, viruses, and other pathogens. Risk is even higher after heavy rainfall, near river mouths, or in areas with inadequate wastewater treatment.
Popular surf destinations including Indonesia, Sri Lanka, the Maldives, Costa Rica, and parts of Latin America all carry elevated risk.
Common Symptoms
Symptoms often begin within several days of exposure and may include:
Loose or watery stools
Abdominal cramping
Nausea
Vomiting
Fever
Urgent bowel movements
Most cases improve within a few days, but severe dehydration can occur, especially in hot tropical climates.
Prevention
Simple precautions can significantly reduce risk:
Drink bottled or properly treated water
Avoid ice when the water source is uncertain
Eat foods that are cooked and served hot
Wash hands frequently
Avoid surfing near storm drains or river runoff after heavy rain
Many experienced surf travelers also carry oral rehydration salts and anti-diarrheal medication as part of their travel medical kit.
Treatment
Most mild cases can be managed with:
Oral hydration
Electrolyte replacement
Rest
Seek medical attention if you develop:
Bloody diarrhea
Persistent high fever
Severe dehydration
Symptoms lasting longer than several days
For some destinations, physicians may prescribe a travel antibiotic before departure for emergency self-treatment.
From a Surfer + Medical Perspective
As both a surfer and medical professional, traveler’s diarrhea is one of the most predictable surf travel problems I encounter. Most cases are not dangerous, but they can quickly derail a surf trip and become serious if dehydration develops in remote locations.
From a medical perspective, prevention and hydration are the most important tools. From a surfer’s perspective, missing a few sessions because you’re careful with food and water is much better than spending your trip stuck in a hotel room.
Key Takeaway
Traveler’s diarrhea is common, but it is often preventable. Careful food choices, safe water practices, and avoiding contaminated surf conditions can help keep you healthy and in the water.
References
CDC Yellow Book. Traveler’s Diarrhea.
Stone DL, et al. Exposure Assessment and Risk of Gastrointestinal Illness Among Surfers. J Toxicol Environ Health. 2008.
Arnold BF, et al. Acute Illness Among Surfers After Exposure to Seawater. Am J Epidemiol. 2017.
Rupert J, Groh T, Allen R. The Pretravel Consultation. American Family Physician. 2025.
Riddle MS, DuPont HL, Connor BA. ACG Clinical Guideline: Diagnosis, Treatment, and Prevention of Acute Diarrheal Infections in Adults. Am J Gastroenterol. 2016.