July and August are hot, no two ways about it, but they're good months for a holiday in Madrid because many of the local residents leave the city so it's a lot quieter... until the sun goes down, because then Madrid is on fire and it's all pure fun. At this time of year the temperature can reach 37 degrees, so many hotels have rooftop pools, which are a cool way to cool down! The city also boasts plenty of parks to escape to when the sun is beating down: the Retiro, the Casa del Campo and Juan Carlos I. If you're here for a good few days, you might want to visit the Sierra de Madrid, a mountain range dotted with charming villages where the temperature is magically much lower.