Like The Photo

Manialtepec Lagoon in December 2026: darkest nights

Swimming in the glowing water is allowed from the boats. Best August to December.

18 pitch-dark nights, 19 dark nights

New moon Tue 8 Dec · Full moon Wed 23 Dec

Night by night, December 2026

NightMoon19:3021:00Best
Tue 1 Dec 41%●●●●●●●●●●19:30
Wed 2 Dec 30%●●●●●●●●●●19:30
Thu 3 Dec 21%●●●●●●●●●●19:30
Fri 4 Dec 13%●●●●●●●●●●19:30
Sat 5 Dec 7%●●●●●●●●●●19:30
Sun 6 Dec 3%●●●●●●●●●●19:30
Mon 7 Dec 1%●●●●●●●●●●19:30
Tue 8 Dec 0%●●●●●●●●●●19:30
Wed 9 Dec 2%●●●●●●●●●●19:30
Thu 10 Dec 5%●●●●●●●●●●19:30
Fri 11 Dec 9%●●●●●●●●●●21:00
Sat 12 Dec 15%●●●●●●●●●●21:00
Sun 13 Dec 23%●●●●●●●●●●21:00
Mon 14 Dec 31%●●●●●●●●●●21:00
Tue 15 Dec 41%●●●●●●●●●●21:00
Wed 16 Dec 51%●●●●●●●●●●21:00
Thu 17 Dec 62%●●●●●●●●●●19:30
Fri 18 Dec 72%●●●●●●●●●●19:30
Sat 19 Dec 81%●●●●●●●●●●19:30
Sun 20 Dec 89%●●●●●●●●●●19:30
Mon 21 Dec 95%●●●●●●●●●●19:30
Tue 22 Dec 99%●●●●●●●●●●19:30
Wed 23 Dec 100%●●●●●●●●●●19:30
Thu 24 Dec 98%●●●●●●●●●●19:30
Fri 25 Dec 94%●●●●●●●●●●19:30
Sat 26 Dec 87%●●●●●●●●●●19:30
Sun 27 Dec 78%●●●●●●●●●●19:30
Mon 28 Dec 68%●●●●●●●●●●19:30
Tue 29 Dec 57%●●●●●●●●●●19:30
Wed 30 Dec 46%●●●●●●●●●●19:30
Thu 31 Dec 36%●●●●●●●●●●19:30

Check one night in detail Manialtepec Lagoon tours

Questions

What are the best nights to see the bioluminescence at Manialtepec Lagoon in December 2026?

The darkest nights are Tue 1 Dec, Wed 2 Dec, Thu 3 Dec, Fri 4 Dec, Sat 5 Dec, Sun 6 Dec, Mon 7 Dec, Tue 8 Dec, Wed 9 Dec, Thu 10 Dec and more. 19 of 31 nights score at least 4 out of 5.

Which nights should I avoid in December 2026?

Avoid the nights around the full moon on Wed 23 Dec, when moonlight washes out the glow.

19:30 or 21:00: which Manialtepec Lagoon tour is darker in December?

19:30 is the darker choice on 17 nights; 21:00 is the darker choice on 5 nights.

Manialtepec Lagoon darkness by month

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