The 24-year-old has scored just four league goals since his £45 million transfer from RB Leipzig in the summer.
He arrived at Stamford Bridge having enjoyed a prolific spell in the Bundesliga, but he's yet to replicate his blistering form for Chelsea.
The German international says the price tag brings added pressure, though he believes he can cope with the demand.
"It does matter how much you cost. It's always a bit of pressure when you come to a new club," he said.
"But I think I can handle it very well. It's not something new.
"The pressure is a little bit higher than the previous years but I think good footballers are the best under pressure and that's my plan, I can do very well under pressure.
"The Premier League is a little bit different to my old league. It's tougher than I thought. The contact here is harder than in Germany, it's what I expected but not like this."
Werner reckons the hectic schedule of games has impacted his form.
He added: "The beginning was very good, but now after a lot of games I'm struggling a little.
"I think it's hard when you play every three days... and on Saturday against teams that can rest the whole week.
"It makes it tough to be the best in every game but the Premier League is very fun to play in."
Featured Image Credit: YouTube/PA
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