The group, which trades from over 700 stores around the world as well as through its internet and catalogue business, said trading had been volatile but reported total sales up 4.3% per cent in the 13 weeks to October 26.
That outcome was just above Next's guidance for sales growth of 1% to 4% in its second half and represented an acceleration from growth of 2.3% in the first half.
Next was reliant on a strong performance from its Directory business, where sales increased 10.7%, while sales at traditional stores rose 0.4% in spite of a stock blunder following the summer heatwave that left Next short of warm weather fashions in August.
Next has generally been able to defy the tough macro economic background helped by its strong online offer, new store openings and diversification into new product areas, such as homewares, as well as new overseas markets.
The firm said it now expected a pre-tax profit of £650 million to £680m, which would be a year-on-year increase of 9.4% at the higher end of the forecast.
It previously guided to a pre-tax profit in the range of £635m to £675m.
The sales forecast was upped from between 1.5% and 3.5% to between 2% and 3.7%.
Cantor Fitzgerald analyst Freddie George said the latest sales improvement was "a positive surprise given the warm weather".