The 25-year-old went into the penultimate event holding a 113-point lead and looked set to stay in contention after throwing a personal best (42.16m) in her weakest discipline, only for Thiam to respond with a brilliant 57.91m.
Johnson-Thompson had too much to do in the final event, the 800m, and fell short by 57 points as Thiam again triumphed on the big stage.
European Championships
Teenager Duplantis soars to record-breaking triumph in pole vault
12/08/2018 AT 21:33
But it was a fine championships from the Brit, who ended up with a personal-best score after she finished first in the third heptathlon 800m heat in a season's best of 2:09.84 to secure the silver.
Watch the European Championships LIVE on Eurosport and the Eurosport Player
Thiam clocked 2:19.35 in the final two-lap event but it was enough for her to close out the gold and leave Johnson-Thompson to take second place.

Nafissatou Thiam of Belgium celebrates after winning Gold in the Women's Heptathlon during day four of the 24th European Athletics Championships at Olympiastadion

Image credit: Getty Images

However, the Commonwealth champion can take great heart from a championship that has produced more highs than lows.
She posted season’s bests in all four events on day one – the 100m hurdles (13.34 secs), high jump (1.91m), shot (13.09m) and 200m (22.88s) – to lead going into Friday.
Johnson-Thompson increased that advantage in the long jump (6.88m), but was again left ruing her inability to compete in the javelin as Thiam secured a 305-point swing.
In the end, the remarkable Thiam had enough to secure the gold medal once again with the second-best score of her career and her best ever at a major championship.


EVENT ONE: 100m hurdles
Johnson-Thompson: 13.34 seconds, 1074 points (4th)
Thiam: 13.69 seconds, 1023 points (14th)
EVENT TWO: High jump
Johnson-Thompson: 1.91m, 2193 points (1st)
Thiam: 1.91m, 2142 points (2nd)
Thiam: 15:35m, 3026 points (1st)
Johnson-Thompson: 13.09m, 2926 points (2nd)
Johnson-Thompson: 22:88s, 4017 points (1st)
Thiam: 24.81s, 3930 points (2nd)
EVENT FIVE: Long jump
Johnson-Thompson: 6.68m, 1066 points (1st)
Thiam: 6.60m, 1040 points (2nd)
EVENT SIX: Javelin
Thiam: 57.91m, 1014 points (1st)
Johnson-Thompson: 42.16m, 709 points (2nd)
Thiam: 2:19.35, final score: 6816 (1st)
Johnson-Thompson: 2:09.84, final score: 6759 (1st)
European Championships
Asher-Smith completes treble on another golden night for GB in Berlin
12/08/2018 AT 21:30