Practical Information for visiting Northern Mexico

Coverage for mobile networks is good in the cities and along the main highways from Telcel, AT&T Mexico and Movistar, with 4G and 5G in Monterrey and the larger centres.

It disappears across long stretches of desert highway and in the Copper Canyon, where the sierra blocks signal almost entirely — Creel and Divisadero have some, the canyon floor and the trails have none.

Local SIMs are cheap; Telcel has the best rural coverage by a clear margin.

Wi-Fi is standard in city hotels and available at the canyon lodges, usually by satellite and slow.

Download offline maps before any desert drive, and carry water and fuel margin — the gaps between services are genuinely long.

Security is the honest issue in northern Mexico, and it varies sharply by state. This deserves research rather than a general reassurance.

• Check current advice for each specific state. Several northern states — Tamaulipas, Sinaloa, Zacatecas, Chihuahua and parts of Sonora, Durango and Coahuila — carry advisories against travel or against non-essential travel from various governments, and the picture changes. Nuevo Leon and Monterrey are generally treated more favourably.
• Do not drive at night anywhere in the region, and use toll roads by day.
• The Copper Canyon tourist corridor — the train, Creel, Divisadero — is generally trouble-free, but the wider sierra has drug cultivation and is not a place to wander independently. Use local guides.
• Heat and dehydration are the most likely physical danger from May to September.
• Flash floods in arroyos during the monsoon.
• Do not buy drugs, at all.

Monterrey has some of the best hospitals in Latin America, and Chihuahua, Hermosillo and Saltillo have good private facilities. The sierra and the desert towns have clinics only, and distances to help are long — insurance covering evacuation is sensible.

Vaccinations: routine cover plus hepatitis A and typhoid; rabies for extended rural stays. There is no malaria in the northern deserts, though a small risk exists in parts of Sinaloa and Durango.

Heat is the region’s defining health risk. Summer temperatures above 42°C with low humidity dehydrate you faster than thirst registers; carry far more water than seems necessary.

Altitude at the canyon rim is mild but noticeable at 2,400 metres, and the temperature swing between rim and floor catches people out.

Scorpions are common in the desert; the Durango and Nayarit species are medically significant. Shake out shoes and bedding.

Water: purified only.

With the Raramuri, restraint is the rule. Ask before photographing, accept a refusal, buy crafts at the asking price without haggling hard, and understand that some ceremonies — particularly at Easter — are not staged for visitors and may not welcome cameras at all.

At Cuatro Cienegas, only designated pools may be entered, and the restrictions exist because the endemic species and the stromatolites are irreplaceable.

Military and National Guard checkpoints are frequent on northern highways. Stop, be polite, comply, and expect the vehicle to be looked at.

Greetings and formality: northerners are direct but courteous, and buenos dias before a request is expected.

Mennonite communities are private and conservative; do not photograph people without asking.

Tipping: ten to fifteen per cent in restaurants.

Drugs carry serious penalties and connect directly to the region’s violence.

Emergency number: 911 nationwide. Angeles Verdes assist motorists free of charge on 078, which matters on long desert highways.

Medical. Monterrey’s hospitals are excellent and are the regional referral point for the whole north-east. From the Copper Canyon, evacuation means a road journey of several hours to Chihuahua.

In the canyon, tell someone your route, carry water, and use local guides — trails are unmarked, signal is absent, and the temperature difference between rim and floor is substantial.

Driving: keep the tank above half, carry water, use toll roads, and do not travel at night.

Flash floods: never enter a flowing arroyo, and do not camp in one during the monsoon.

US and Canadian consulates operate in Monterrey, Chihuahua, Hermosillo and the border cities.