onlybeaches

Japan · Nagasaki Prefecture

Best beaches in Saikai

24 ranked beaches in Saikai, Nagasaki Prefecture

Ranked by the OnlyBeaches Index (OBI) — a 1-10 score blending water purity, conditions, crowd levels and vibe. Updated every 30 minutes.

All beaches in Saikai

  1. 1

    Ikeshima Beach

    Rugged island coastline known for dramatic scenery

    7.0
  2. 2

    Matsushima Beach

    Island-fringed beach with quieter atmosphere

    7.0
  3. 3

    Matsushima Cove Beach

    Small peaceful cove surrounded by island scenery

    7.0
  4. 4

    Omura Bay Hidden Shore North

    Undiscovered stretch along the northern bay coast

    7.0
  5. 5

    Omura Bay North Coast Beach

    Long stretch of accessible bay coastline

    7.0
  6. 6

    Omura Bay Rural Beach

    Remote bay beach surrounded by countryside

    7.0
  7. 7

    Oseto Bay Beach

    One of the main calm-water beaches along northern Omura Bay

    7.0
  8. 8

    Oseto Calm Shore

    Quiet extension of main Oseto beach area

    7.0
  9. 9

    Oseto Hidden Cove

    Secluded cove tucked along bay shoreline

    7.0
  10. 10

    Oseto Rocky Coast

    Rugged coastal area offering scenic ocean views

    7.0
  11. 11

    Oseto Sunset Beach

    Popular for dramatic sunsets over the East China Sea

    7.0
  12. 12

    Oshima Beach

    One of the most visited open-sea beaches with wide sandy shoreline

    7.0
  13. 13

    Oshima Hidden Cove

    Small secluded cove near Oshima with minimal visitors

    7.0
  14. 14

    Saikai Omura Bay Beach

    Peaceful coastline ideal for relaxed swimming

    7.0
  15. 15

    Saikai Park Beach

    Well-maintained beach area near Saikai Park

    7.0
  16. 16

    Saikai Quiet Cove

    Small sheltered cove ideal for peaceful visits

    7.0
  17. 17

    Saikai Rural Beach

    Remote countryside beach with peaceful atmosphere

    7.0
  18. 18

    Sakito Beach

    Coastal beach on Sakito Island with expansive sea views

    7.0
  19. 19

    Sakito Hidden Beach

    Quiet sandy spot on Sakito Island rarely visited

    7.0
  20. 20

    Seihi Beach

    Popular local beach with gentle bay waters and easy access

    7.0
  21. 21

    Seihi Hidden Beach

    Lesser-known local beach with low visitor numbers

    7.0
  22. 22

    Seihi Quiet Shore

    Calm sandy patch used mostly by locals

    7.0
  23. 23

    Yukinoura Beach

    Well-known regional beach with clean water and easy access

    7.0
  24. 24

    Yukinoura Hidden Shore

    Lesser-known stretch beyond main Yukinoura area

    7.0

What makes Saikai's beaches stand out?

Saikai sits in Nagasaki Prefecture, Japan and is home to 24 ranked beaches on OnlyBeaches. Every beach here is scored by the OnlyBeaches Index — a 1-10 metric blending water purity, live conditions (waves, water temperature, wind), crowd intelligence and vibe.

Whether you're after the highest-scoring beach in Saikai or a quieter hidden cove, the list above is refreshed every 30 minutes using live Stormglass and OpenWeather data.