File photo: Nadine Hutton.

Johannesburg - South Africa's government bonds weakened in thin volumes on Monday as traders awaited inflation and retail sales data later in the week for pointers on the central bank's interest rate decision due at the end of the month.

The yield on the benchmark 2026 issue climbed to 9.825 percent after ending Friday's session at 9.715 percent.

“We haven't seen much recovery of the rand so volumes have been low,” said Rand Merchant Bank fixed income analyst Gordon Kerr, referring to the local currency's sharp depreciation over the past month.

“Guys are still waiting to get some fundamental data out such as inflation data this week.”