The figure was higher than $294.9m in July, which was the lowest total since Massachusetts launched legal betting in April.
Some $307.2m was spent wagering online, an increase of 6.6% from July. Retail betting was also 13.2% higher at $7.7m for August.
Handle rise fails to halt revenue drop
However, while handle was higher month-on-month, the same could not be said for revenue from sports betting. Total revenue in August hit $22.7m, down 22.8% from $29.4m in July.
Of this total, $22.6m came from online betting, a decline of 21.5% from July. Just $157,782 was generated in retail wagering revenue, down 72.6%.
DraftKings leads in Massachusetts
DraftKings remains the runaway leader, posting $10.8m from $161.9m in bets during August.
FanDuel again placed second with $7.4m off a $79.4m handle, then BetMGM on revenue of $2.4m from $21.2m.
Looking at the land-based market, Plainridge Park Casino led the way with $150,773 worth of revenue off $2.8m. MGM Springfield also turned revenue of $64,934 from a $912,651 handle.
However, Encore Boston Harbor posted a sports betting loss of $57,925 despite having the highest retail handle – $4.0m.
Casino revenue edges down in August
As for land-based casino activity, combined table and slots revenue fell 0.7% to $97.9m.
Physical slots revenue amounted to $67.5m, level with July’s total. Table games revenue hit $30.4m, down 2.6% month-on-month.
Combined sports wagering and casino revenue in August reached $120.6m, a drop of 5.9% from $128.1m in the previous month. The state collected $4.5m in sports betting tax and $27.6m in land-based casino tax.