The foreign reserves were equal of 4.6 months of imports.
The reserves haven been boosted partly with the help of a swap with India.
Sri Lanka sold a 650 million US dollar sovereign bond and 338 million US dollars in floating rate bonds to the domestic market in June.
Analysts believe a part of the bond proceeds had been converted but with state subsidies and salaries going up, and interest rates kept low with liquidity releases, a consumption boom has been fired, which is hitting the balance of payments.
June is also usually a month where there is spike in state foreign debt settlements.
The state sold another 327 million dollars of floating rate notes on Thursday which has a June 29 settlement date, which will analysts say will help make forex reserve numbers look better.