Disease
Gray moldFuzzy gray mold on strawberries

Fuzzy gray mold on fruit and leaves, in damp, still weather.
When it shows up: Damp spells, spring to autumn
What to do
Pick off mouldy fruit and bin it.
Put straw under strawberries so the fruit stays off the soil.
Give plants room so air can move round them.
Not quite it?
These look similar. Compare the photos.

