Keep rain equipment whatever the weather. The weather can always take a turn for the wetter especially in high altitudes. You don’t want to get caught without protection when it rains especially in colder climes. The best type is a waterproof (or raincoat) instead of an umbrella which is impractical for hiking. Your bags should also have a protective cover to keep your stuff dry.
Always have stuff to protect you from the heat or the cold. You should carry with you extra warm clothing especially if you live in colder areas and if you’re spending a night or more in a hike. Even in more temperate areas the temperatures up in the mountains can drop significantly so keep the shivers (and the colds) away by keeping warm. On sunny days, make sure that your head is protected by a hat or some other protective head gear. You should also wear sunglasses that keep the glare from the sun away.
Make sure that you tackle the right terrain for your fitness level. You wouldn’t want to take on challenging routes that are more apt for experienced hikers if you are only a beginner. There are powerful forces of nature that should be respected and can be dangerous if taken on without the proper training. If you’re just starting out, it would be best to choose a fairly straightforward trail that is well-used and not too technical.
Bring a mobile phone. In case of an emergency or in case you get lost, bring a cellular phone with you to act as a link to the world. Best to bring spare batteries too.
Never hike alone. You should hike with an experienced hiker when you’re just starting out and do not attempt to hike a trail you’re unfamiliar with by yourself. Many have suffered serious, or even fatal consequences by attempting to hike by themselves, succumbing to disorientation, the weather or to wild animals. Always engage the help of an experienced hiker and learn from his experience.
Try to learn basic survival lessons. It is always better to be prepared for any emergency—as they say, you never see when an emergency is coming. Know the basics of survival like first aid, being able to tell directions without a compass, learning to read the signs of nature, building a shelter, building a fire, and keeping off wild animals.