Why was Tim Peake sweating when he was sat down once he had landed?

Question: Why was Tim Peake sweating when he was sat down once he had landed?
- Keywords:
  landing,
  sweat,
  Tim Peake
Asked by Rosiebunny to Andrea, Charlie 🚀, Col Op, Kirsty, Vinita on 21 Jun 2016. This question was also asked by AmethystGlimmer, mini_astronaut22, Jacky Chan.
- Andrea Boyd answered on 21 Jun 2016:
  
  It was a hot summer day in the desert of Kazakhstan and Tim was in direct sun! About 27oC! I’d sweat too 🙂
- Kirsty Lindsay answered on 21 Jun 2016:
  
  And he was wrapped up in his sokol launch/landing suit which is airtight- he must have been very hot!

Question: Why was Tim Peake sweating when he was sat down once he had landed?