Jan 3 (Reuters) - Canadian energy company Suncor said on Wednesday it saw record upstream production in the fourth quarter, supported by strong output at its Firebag and Fort Hills assets.

The Calgary, Alberta-based company said it clocked its second-highest quarterly upstream production of 808,000 barrels per day (bpd) in the fourth quarter ended Dec. 31.

CEO Rich Kruger noted that December was Suncor's best month ever with upstream production averaging over 900,000 bpd.

Suncor's oil sands production for the quarter is expected to rise to 758,000 bpd, compared with 688,100 bpd in the year-ago quarter.

Last month, Suncor also forecast higher capital spend for 2024. (Reporting by Kabir Dweit; Editing by Ravi Prakash Kumar)