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Koh Rong plankton in July 2027: darkest nights

Swim off Long Set Beach or from night boat trips on Koh Rong Samloem. Year-round; best in the dry season.

17 pitch-dark nights, 19 dark nights

New moon Sun 4 Jul · Full moon Sun 18 Jul

Night by night, July 2027

NightMoon20:0022:00Best
Thu 1 Jul 8%●●●●●●●●●●20:00
Fri 2 Jul 3%●●●●●●●●●●20:00
Sat 3 Jul 0%●●●●●●●●●●20:00
Sun 4 Jul 0%●●●●●●●●●●20:00
Mon 5 Jul 3%●●●●●●●●●●20:00
Tue 6 Jul 9%●●●●●●●●●●22:00
Wed 7 Jul 17%●●●●●●●●●●22:00
Thu 8 Jul 27%●●●●●●●●●●22:00
Fri 9 Jul 37%●●●●●●●●●●22:00
Sat 10 Jul 49%●●●●●●●●●●22:00
Sun 11 Jul 60%●●●●●●●●●●22:00
Mon 12 Jul 70%●●●●●●●●●●22:00
Tue 13 Jul 79%●●●●●●●●●●22:00
Wed 14 Jul 86%●●●●●●●●●●20:00
Thu 15 Jul 92%●●●●●●●●●●20:00
Fri 16 Jul 97%●●●●●●●●●●20:00
Sat 17 Jul 99%●●●●●●●●●●20:00
Sun 18 Jul 100%●●●●●●●●●●20:00
Mon 19 Jul 99%●●●●●●●●●●20:00
Tue 20 Jul 96%●●●●●●●●●●20:00
Wed 21 Jul 92%●●●●●●●●●●20:00
Thu 22 Jul 86%●●●●●●●●●●20:00
Fri 23 Jul 78%●●●●●●●●●●20:00
Sat 24 Jul 69%●●●●●●●●●●20:00
Sun 25 Jul 59%●●●●●●●●●●20:00
Mon 26 Jul 49%●●●●●●●●●●20:00
Tue 27 Jul 38%●●●●●●●●●●20:00
Wed 28 Jul 27%●●●●●●●●●●20:00
Thu 29 Jul 18%●●●●●●●●●●20:00
Fri 30 Jul 10%●●●●●●●●●●20:00
Sat 31 Jul 4%●●●●●●●●●●20:00

Check one night in detail Koh Rong plankton tours

Questions

What are the best nights to see the bioluminescence at Koh Rong plankton in July 2027?

The darkest nights are Thu 1 Jul, Fri 2 Jul, Sat 3 Jul, Sun 4 Jul, Mon 5 Jul, Tue 6 Jul, Wed 7 Jul, Thu 8 Jul, Fri 23 Jul, Sat 24 Jul and more. 19 of 31 nights score at least 4 out of 5.

Which nights should I avoid in July 2027?

Avoid the nights around the full moon on Sun 18 Jul, when moonlight washes out the glow.

20:00 or 22:00: which Koh Rong plankton tour is darker in July?

20:00 is the darker choice on 16 nights; 22:00 is the darker choice on 5 nights.

Koh Rong plankton darkness by month

Darkness score 1-5 per tour slot from twilight and moonlight. Weather and plankton health are not included. Times are local (Asia/Phnom_Penh).