The figure was a spike from January's 2.0 percent and the highest result since April 2012, when it stood at 3.4 percent.
The biggest price increases were registered for food (6 percent), consumer goods (3.3 percent), services (3.1 percent) and rentals (2.8 percent).
On a month-on-month basis, February's consumer price index (CPI) gained 1.1 percent.