(Reuters) - Spain's European Union-harmonised 12-month inflation rate rose to 1.8% in October from 1.7% in the period through September, preliminary data released by the National Statistics Institute (INE), showed on Wednesday.

The 12-month EU-harmonised inflation was in line with the 1.8% expected by analysts polled by Reuters.

Annual core inflation, which strips out volatile fresh food and energy prices, was 2.5% in October, up from 2.4% in the period through September, the INE data showed.

Spain's national inflation rose to 1.8% in the 12 months through October, up from 1.5% in September, INE said.