Average retail gasoline prices in Honolulu have risen 9.6 cents per gallon in the past week, averaging $4.17 per gallon Monday, according to GasBuddy’s daily survey of 214 gas outlets in Honolulu. 

The website GasBuddy.com said this compares with the national average that has increased 5.7 cents per gallon in the last week to $3.55 per gallon.

During the past week, gas prices Monday were 12.1 cents per gallon higher than the same day one year ago and are 18.8 cents per gallon higher than a month ago. The national average has increased 28.2 cents per gallon during the last month and stands 7.2 cents per gallon higher than this day one year ago.