Tommy Bowe loses the ball in tricky weather conditions at the Liberty Stadium.
Jonathan Humphreys insists the Ospreys are hitting form at just the right time after regaining top spot in the Magners League.
Scotland wing Nikki Walker bagged a brace of first-half tries before skipper Ryan Jones sealed an emphatic Welsh derby victory over Cardiff Blues at the Liberty Stadium.
The result puts the Ospreys two points clear of Glasgow Warriors at the summit of the table and in good spirits ahead of a crunch month which includes mammoth Heineken Cup ties against Clermont Auvergne and Leicester Tigers.
Humphreys said: "It's good to be top of the league and that's where we want to be. We appreciate everyone else has games coming up but with the changes we made to our game, we always felt December and January would be defining months for us.
"The structure was good as was our defence. There are still things to work on but we believe things are coming right for us and our form is getting towards where we want it to be.
"We have to be in good shape going into the Heineken Cup and continue our momentum before facing Clermont."
Man-of-the-match Dan Biggar opened the scoring with a deft 12th minute drop goal on the way to an 11-point personal haul before Walker crossed at the end of the opening quarter.
Then Walker doubled his try count from close-range in the left corner following a neat break by fly-half Biggar and Jones added a third with a try just after the hour mark to leave the Blues white-washed.
Humphreys added: "We're pleased with the performance but it is disappointing that we didn't get the bonus point considering how early we scored the third try.
"We're delighted to keep them to nil and it's nice to achieve that against anybody. But it wasn't easy. There are a lot of battered and bruised bodies in the dressing room."
Blues coach Dai Young offered no excuses as his side are still searching for their away success in the league this season.
Young said: "Sometimes you have to hold your hands and say we were beaten by a far better side. It was a disappointing performance and the Ospreys controlled the field."
Porthcawl recently received a WRU facilities grant and funding from Natwest RugbyForce in order to give their changing rooms a facelift. This came after receiving £10,000 in a WRU facilities grant last year to tarmac their car park. The improvements have already helped to make the club more accessible, not only for their own members and players but for the whole community.
The Welsh Rugby Union has launched a new, accredited Safeguarding and Protecting Children course - funded by the WRU and delivered in partnership with Sport Wales and the NSPCC - fo rugby club volunteers around Wales.
The SWALEC semi-final draws threw up some mouth-watering clashes in the Cup, Plate and Bowl as the 12 teams aim for the Millennium Stadium Finals Day. All the semi-finals are to be played on the weekend of April 12.
Welsh whistler Rhys Thomas continues to scale the heights of the game as he prepares to be an official in this weekend's Hong Kong Sevens tournament, undoubtedly the showpiece event on the World Series calendar.
Wales International Ian Evans and Wales and Lions legend Scott Quinnell swapped rugby balls for paint pots at Tonna during the RBS 6 Nations. They surprised club players with a special clubhouse makeover to launch NatWest RugbyForce 2014 - a programme developed in partnership with the WRU to make rugby clubs stronger businesses by improving and renovating their facilities with the support of volunteers and the local community.
Fresh from claiming the Bowl honours in Tokyo last Sunday, the Wales Sevens squad have settled into their routine as they prepare for this weekend's Hong Kong tournament where Iolo Evans is aiming high, as WRU TV's Graeme Gillespie discovers.