El Salvador has one of the highest crime rates in Latin America. Take particular care in downtown San Salvador and on roads outside major towns and cities at night. Avoid wearing expensive jewellery or displaying valuable items. Safeguard your passport, mobile phone and cash against pickpockets. See Crime
There are a number of potentially active volcanoes in El Salvador. You can get up to date information and advice about volcanic activity on the website of the Directorate General of Civil Protection (in Spanish). See Natural disasters.
The rainy season runs from June to November. See Rainy season
There is a low threat from terrorism. See Terrorism
Take out comprehensive travel and medical insurance before you travel.