Some Japanese vessels, like the new Akizuki class as well as larger capital ships like the Kongo, Haruna, Yamato, and more, were equipped with a surface-surface radar (Type 22) that could be used to provide information to the fire control systems. It was fairly standard equipment by early 1944 or so, and entered service in early 1942. However, this was not the same as dedicated fire control radar; the radar set simply found the range and bearing to a target and fed those to the guns; there was no shot correction or blind fire capability. The Japanese navy was in the process of developing dedicated fire-control radar, but the war ended before they could be put in service. This is a good and sourced online resource for the Japanese navy during the war, and this subpage outlines the various Japanese radar types in service.

In comparison, most contemporary Allied ships at the time had a fully blind-capable fire control with a PPI scope (i.e. the spinning lines with dots that show target positions like you see in movies). These more advanced radars, such as the American Mk. 13, had a much higher resolution and were able to detect the shell splashes and correct their fire, making them much more accurate. Their effectiveness over Japanese radars was seen in the action at Surigao Strait at Leyte Gulf, one of the few times where American and Japanese battleships directly engaged one another.