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Koh Rong plankton in January 2027: darkest nights

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

19 pitch-dark nights, 20 dark nights

New moon Fri 8 Jan · Full moon Fri 22 Jan

Night by night, January 2027

NightMoon20:0022:00Best
Fri 1 Jan 31%●●●●●●●●●●20:00
Sat 2 Jan 22%●●●●●●●●●●20:00
Sun 3 Jan 15%●●●●●●●●●●20:00
Mon 4 Jan 9%●●●●●●●●●●20:00
Tue 5 Jan 4%●●●●●●●●●●20:00
Wed 6 Jan 1%●●●●●●●●●●20:00
Thu 7 Jan 0%●●●●●●●●●●20:00
Fri 8 Jan 1%●●●●●●●●●●20:00
Sat 9 Jan 3%●●●●●●●●●●20:00
Sun 10 Jan 7%●●●●●●●●●●22:00
Mon 11 Jan 13%●●●●●●●●●●22:00
Tue 12 Jan 21%●●●●●●●●●●22:00
Wed 13 Jan 30%●●●●●●●●●●22:00
Thu 14 Jan 40%●●●●●●●●●●22:00
Fri 15 Jan 50%●●●●●●●●●●22:00
Sat 16 Jan 61%●●●●●●●●●●22:00
Sun 17 Jan 72%●●●●●●●●●●20:00
Mon 18 Jan 82%●●●●●●●●●●20:00
Tue 19 Jan 90%●●●●●●●●●●20:00
Wed 20 Jan 96%●●●●●●●●●●20:00
Thu 21 Jan 99%●●●●●●●●●●20:00
Fri 22 Jan 100%●●●●●●●●●●20:00
Sat 23 Jan 98%●●●●●●●●●●20:00
Sun 24 Jan 93%●●●●●●●●●●20:00
Mon 25 Jan 86%●●●●●●●●●●20:00
Tue 26 Jan 78%●●●●●●●●●●20:00
Wed 27 Jan 68%●●●●●●●●●●20:00
Thu 28 Jan 58%●●●●●●●●●●20:00
Fri 29 Jan 48%●●●●●●●●●●20:00
Sat 30 Jan 38%●●●●●●●●●●20:00
Sun 31 Jan 29%●●●●●●●●●●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 January 2027?

The darkest nights are Fri 1 Jan, Sat 2 Jan, Sun 3 Jan, Mon 4 Jan, Tue 5 Jan, Wed 6 Jan, Thu 7 Jan, Fri 8 Jan, Sat 9 Jan, Sun 10 Jan and more. 20 of 31 nights score at least 4 out of 5.

Which nights should I avoid in January 2027?

Avoid the nights around the full moon on Fri 22 Jan, when moonlight washes out the glow.

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

20:00 is the darker choice on 16 nights; 22:00 is the darker choice on 6 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).