Search gender: all male female Seiharu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: seiharu Katakana: セイハル 0 Kanji: 成晴 Meaning: 成To finish. Grow. To raise up. Accomplish. To be fruitful. to change into Good. splendid. large. well-organized. 晴Sunny. A blue sky with no clouds in the sky. Rain or snow will stop. To be free of worries and anxieties. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Seiharu Boy Name Meaning, Kanji Variations.