I have been to Mitoma once, during Autumn and saw some decent waves and a LOT of (though more on the small choppy category) and a LOT of surfers. It is on the eastern part of Fukuoka, passed Island City. I did not have chance to return since then until one winter day in December. I checked out the forecast and saw a 6 foot swell heading towards Mitoma so I decided to go catch the train going there and check it out (and perhaps brave it out there with a wetsuit if things seemed tempting enough.) It was blown out and empty (I guess I forgot to check the wind in the forecast) so I just enjoyed the view of the eerily empty beach and returned to the highway to walkfurther north east to check out a spot I read about in a map, Shingu. It was a train station (of the same name) away from Mitoma but I decided to walk there instead.