Yield given in the source: 25 t/ha. The source notes that in South India the rainy-season crop is preferred even though its quality is poorer, because prices are high then. Actual yields and prices depend on variety, care and local markets.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Guava – Yield; crop regulation, p. 29