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Manialtepec Lagoon in July 2027: darkest nights

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

14 pitch-dark nights, 16 dark nights

New moon Sat 3 Jul · Full moon Sun 18 Jul

Night by night, July 2027

NightMoon19:3021:00Best
Thu 1 Jul 5%●●●●●●●●●●21:00
Fri 2 Jul 1%●●●●●●●●●●21:00
Sat 3 Jul 0%●●●●●●●●●●21:00
Sun 4 Jul 2%●●●●●●●●●●21:00
Mon 5 Jul 6%●●●●●●●●●●21:00
Tue 6 Jul 13%●●●●●●●●●●21:00
Wed 7 Jul 22%●●●●●●●●●●21:00
Thu 8 Jul 32%●●●●●●●●●●21:00
Fri 9 Jul 43%●●●●●●●●●●21:00
Sat 10 Jul 55%●●●●●●●●●●21:00
Sun 11 Jul 65%●●●●●●●●●●21:00
Mon 12 Jul 75%●●●●●●●●●●21:00
Tue 13 Jul 83%●●●●●●●●●●21:00
Wed 14 Jul 90%●●●●●●●●●●21:00
Thu 15 Jul 95%●●●●●●●●●●21:00
Fri 16 Jul 98%●●●●●●●●●●19:30
Sat 17 Jul 100%●●●●●●●●●●19:30
Sun 18 Jul 100%●●●●●●●●●●19:30
Mon 19 Jul 98%●●●●●●●●●●19:30
Tue 20 Jul 94%●●●●●●●●●●19:30
Wed 21 Jul 89%●●●●●●●●●●19:30
Thu 22 Jul 82%●●●●●●●●●●19:30
Fri 23 Jul 73%●●●●●●●●●●21:00
Sat 24 Jul 64%●●●●●●●●●●21:00
Sun 25 Jul 54%●●●●●●●●●●21:00
Mon 26 Jul 43%●●●●●●●●●●21:00
Tue 27 Jul 32%●●●●●●●●●●21:00
Wed 28 Jul 22%●●●●●●●●●●21:00
Thu 29 Jul 13%●●●●●●●●●●21:00
Fri 30 Jul 6%●●●●●●●●●●21:00
Sat 31 Jul 2%●●●●●●●●●●21:00

Check one night in detail Manialtepec Lagoon tours

Questions

What are the best nights to see the bioluminescence at Manialtepec Lagoon 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, Sat 24 Jul, Sun 25 Jul, Mon 26 Jul, Tue 27 Jul and more. 16 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.

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

19:30 is the darker choice on 3 nights; 21:00 is the darker choice on 17 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).