An estimated 93% of soft wheat was in good or excellent condition, unchanged from the previous week, the office said in a weekly cereal report.
The score was above the 69% registered a year earlier and the highest for the time of year in FranceAgriMer data going back to 2011.
A sunny, warm spell this week is expected to help crops in key northern plains following a wet, chilly start to May, though traders are still wary of renewed dryness.
The good/excellent ratings for winter and spring barley were also unchanged from the prior week, at 90% and 95% respectively.
In a first rating for this year's grain maize crop, FranceAgriMer estimated that 94% of the crop was in good or excellent condition against 90% a year earlier.
Farmers were nearing the end of maize planting, with 95% of the expected area drilled. Planting progress, which was hampered by rainy, cool weather, remained behind an average level of the past five years at 97%.