A dramatic drop in temperature helped Ireland remain in touch with the leader in the Argentinian Amateur Open Championship in Buenos Aires.
Temperatures dropped around 10˚C to 21˚c at Tortugas Country Club and while Hume shot a one over 71, he's only five shots behind Edgar Catherine of France with Gary Hurley's fine 69 leaving him a shot further back.
John-Ross Galbraith shot a 74 to share 22nd on nine over, 14 shots off the pace. But Hume and Hurley still have a great chance of challenging for a win or a top finish before moving on to next week's Souther Cross Invitational at Nordelta Golf Club.
Hume is tied for seventh on four over after he recovered well from five dropped shots in a three-hole spell on his front nine.
Two under after four, he bogeyed the fifth and then double bogeyed the sixth and seventh. But having turned in three over, he came back in two under with a hat-trick of birdies from the 10th and just one more bogey, at the 18th.
Hurley is tied for 10th, six shots behind Catherine on two over after a 69 featuring three birdies and just two bogeys.
Catherine (68p69-69) leads by a shot on four under from world No 63 Jarryd Felton (71) of Australia with Argentina's Ernesto Correa (70) alone in third on two under.
Italian Amateur Open — The Island's Kevin LeBlanc made the cut with a shot to spare at Is Molas in Sardinia.
The Junior Open champion added a 76 to previous rounds of 74 and 76 to make the 11-over guillotine on 10 over 226. But there was no luck for Tommy O'Driscoll, despite a best of the week 75, as he ended on 234.
Alexandre Daydou of France (710-70-69) leads by two shots on six under from Stefano Mazzoli of Italy with Warayu Melzer of Germany three off the pace in third place.