Summer in Mongolia is the warmest season, as sometimes temperatures can reach +40 centigrade (average the temperature is from +10’C-27’C), air is dry and pleasant to travel around.  Also the summer is when Mongolia gets the majority of its rainfall. Mongolian herders eagerly await these rains for the grass they bring their livestock, and the steppe turns from a dry, dead tan to its beautiful green. Summer is when many semi-nomadic families will head out from the aimag cities to the countryside in order to tend their herds, shear their wool, and create a bewildering array of dairy products.
Most tourists’ flock here in summer to enjoy the comfortable temperatures and see the vast landscapes of wide open country and nomadic culture. 

NAADAM (Three Manly Games)
Event Date: 11th and 13th of July
Venue: Throughout Mongolia

The biggest festival of the Mongolia is the Naadam Festival celebrated in Mongolia nationwide on July 11-13. The festival is also locally termed "Eriin Gurvan Naadam" (эрийн гурван наадам) "the three games of men". The games are Mongolian wrestling, horse racing, and archery, and are held throughout the country during midsummer. Women have started participating in the archery and girls in the horse-racing games, but not in Mongolian wrestling.

Event Date: at 23rd of July
Venue: In Orkhon valley

In Mongolia, the yak plays an important part in supporting local livelihoods. Yaks are used to transport people and cargo, warm clothes are made from their wool, their milk, and meat provides food, and even their dung is used for fuel. While yaks are dependable domesticated animal, they are also surprisingly fast runner, especially in sprints. In Mongolia, yaks races are popular form of local entertainment.
The Yaks Festival is one of the most important festivals in Mongolia. It’s held each year on the 23rd of July, in Orkhon Valley, in Bat Ulzii, province of Ovorkhangai.