Health & safety
Health and Safety in Colombia: Altitude, Sun and Sense
Colombia is a mainstream travel destination and most visits pass without incident, so the useful thing a guide can do is be specific rather than nervous. The genuine issues here are environmental and they cluster around one fact — this is an equatorial country with enormous variation in altitude — plus the ordinary urban awareness any large city asks of a visitor.
Updated 2026-08-16
Altitude, and the sun that comes with it
The capital sits at roughly two thousand six hundred metres, and a good many arrivals reach it directly from sea level after an overnight flight. That combination produces headache, tiredness, poor sleep and loss of appetite in a fair proportion of visitors during the first day or two — often mistaken for something caught on the plane. The behavioural answer is straightforward: drink considerably more water than you feel you need, eat lightly, be moderate with alcohol on the first night, and keep anything strenuous off the first day. Most people stop noticing within twenty-four hours. If symptoms are severe, or worsen rather than settling, that is the point to seek medical advice rather than to push on — and the sensible general rule is that anything clinical, including what to carry with you, is a question for a health professional before you travel.
The less-anticipated half is ultraviolet. Sitting on the equator at altitude gives Colombia's highlands some of the most intense UV levels measured anywhere, and because the air is cool and often overcast the usual warning signal — feeling hot — is absent. People burn badly in the capital and in the coffee country on grey days, which is not intuitive. High-factor sunscreen, a hat and sunglasses are more useful at altitude than they are on the Caribbean beach, and cloud is not protection.
The lowlands: mosquitoes, water and the certificate
Below about two thousand metres the picture changes to a standard tropical one. Yellow fever vaccination is required or recommended for travel to the Amazon, parts of the Pacific coast and other lowland regions, and proof can be requested — including at some domestic departure gates — so confirm the current requirement for the specific places you are going and carry your certificate. That is a documentation instruction, not medical advice; what to have and whether it suits you is a conversation with a health professional well before departure, since these things are not last-minute.
Mosquito-borne illness exists in the lowlands and the sensible response is entirely mechanical: repellent applied properly and reapplied, long sleeves at dawn and dusk when the relevant mosquitoes are most active, and a net where one is provided. Tap water is treated and safe to drink in the major cities — the capital's is genuinely good — and the answer changes in small towns and rural areas, where bottled or filtered is the norm. Food from busy street stalls with high turnover is generally a better bet than a quiet one, which is true most places and reliably true here.
Ordinary city sense
Colombia's cities ask what large cities generally ask. Opportunistic theft is the realistic risk rather than anything more serious, and it responds to ordinary habits: keep your phone off the table and out of your hand on the street, carry the day's cash rather than everything, use registered taxis or a ride-hailing app after dark instead of flagging one down, and take a moment to ask at your accommodation which immediate areas are worth avoiding at night — the answer is local, block by block, and staff will tell you plainly.
Two habits worth adding. Withdraw cash from machines inside banks, shopping centres or staffed premises rather than from street-facing ones, particularly at night. And treat drinks the way you would anywhere — never leave one unattended, and be wary of accepting them from people you have just met, which is the standard advice everywhere and is worth stating plainly here. None of this is unusual; it is the same list a sensible visitor applies in any large city, and applying it is most of the work.
Regions, advisories and the numbers
Colombia is a large country and conditions are not uniform across it. Colombia's headline destinations — the cities, the coffee region, the Caribbean coast and islands, the Sierra Nevada and the Amazon river towns — are established, well-travelled places with normal visitor infrastructure. Some rural and border areas carry restrictions or advice against travel, and those assessments change. The authoritative source is your own government's current travel advisory, which is updated as conditions do and is the right thing to check while planning anything away from the main routes. Follow it rather than a guidebook's snapshot, including this one.
Practical closers. The national emergency number is 123 and works for police, ambulance and fire. Medical care is good in the major cities, with private clinics widely used by visitors, and thinner in rural and remote areas — which is a distance issue rather than a quality one, and the reason travel insurance covering evacuation is worth having if you are going to the Amazon, the Pacific coast or high trekking country. Pharmacies are plentiful and pharmacists are a reasonable first stop for minor complaints. And carry a copy of your passport rather than the document itself for day-to-day identification.