To answer your question though – yes, the ruins are safe . Chichen Itza is a bit of a trek (3 hours drive each way) and being inland in the jungle, it can be extremely hot there. Tulum is much closer and the setting is spectacular (the ruins are on top of a cliff).
If you prefer to go on your own with no guide, the cost of entrance is just 80 pesos = $3-4 USD. Because the ruins are a little removed from the parking lot, a folkloric train is available to take you to the entrance and is another 20 pesos = $1 USD per person.
10 Best Riviera Maya Excursions, Tours, and Activities Explore Mayan Ruins. Dive into a Cenote. Visit Tulum . Road trip to Valladolid. Stay in Playa Del Carmen. Eco tours in Xel Ha, Xcaret , Xplor, and Xenses Parks. See the Sian Ka’an Biosphere. Explore Cozumel.
The 3 sites you should visit in this area are: Chichen Itza, Izamal and Dzibilchaltun. If you stay near or in Progreso, [Reef Club], then you should visit Extempo. Chichen Itza is by far the most popular and most visited of all the ruin sites. This is due to its proximity to Cancun and the Riviera.
the Pyramid of the Sun
about 60 miles
Cancun is a safe town to visit – locals are friendly and crime rates are very low compared to other cities in Mexico. The latter has a 13-mile arc of beautiful white-sand beaches lined with resorts and hotels, and considered the safest part of Cancun .
There is not any protection from rain while walking around. It is usually hot walking around, so comfortable clothes , shoes, sunscreen, hat, glasses and water are all good things to keep in mind. If you drive to the ruins , there are many gift shops by the entrance.
You can jump in the water at Tulum ruins and swim north to Boca Paila. Even if you are just going to visit the ruins it is still quite an experience to swim out on the ruins beach and see the ruins from the water. On a hot summer day it is a great way to cool off.
When to Visit the Riviera Maya The dry season begins in late November and ends in February, making this season the best time to visit the Riviera Maya. Avoid Riviera Maya travel from March through May , however – the heat and humidity are oppressive.
Water safety while around the sea and in the Riviera Maya The reef can be over 500 meters from shore and swimming out that far is not recommended. The sea has a mind of its own. Water safety is just prudent and good safety measures. Millions of people enjoy the water all year round, but water safety is important….
Truly. Yes, there are some (not a lot) of sharks in the area but I do not worry about them. However, the Riviera Maya area is one of the safest places in the world when it comes to having to worry about shark bites.