Live rating · updated every 15 minutes

Bioluminescence tonight

Tonight’s rating

Good

Score 60/100 · Waxing crescent · 33% moon

Why we rated tonight good

Moon: Waxing crescent (33% illuminated). Contributes 27/40 to the score. Darker moon = better.
Cloud cover: 10/25.
Season: 18/25. Holbox biolum peaks late spring through early autumn.
Calm water: 5/10 — calmer water reveals the glow more clearly.

How to see it

The best spot is Punta Cocos, the south-west tip of Holbox. Go 1–2 hours after sunset, walk into ankle-to-knee-deep water, and swirl your hand. On peak nights, every disturbance flashes electric blue.

Licensed kayak tours run from the beach clubs at Playa Norte; typical cost MXN 800–1,200 per person. No flash photography — it kills the effect for everyone around you.

Best nights in the next two weeks

2026-10-17

Good

First quarter · 42% moon · score 61

2026-10-16

Good

Waxing crescent · 33% moon · score 60

2026-10-18

Good

First quarter · 52% moon · score 57

Full 14-night forecast

Date	Rating	Moon	Illumination	Score
2026-10-16	Good	Waxing crescent	33%	60
2026-10-17	Good	First quarter	42%	61
2026-10-18	Good	First quarter	52%	57
2026-10-19	Fair	Waxing gibbous	61%	53
2026-10-20	Fair	Waxing gibbous	70%	50
2026-10-21	Fair	Waxing gibbous	79%	46
2026-10-22	Fair	Waxing gibbous	87%	43
2026-10-23	Fair	Waxing gibbous	93%	41
2026-10-24	Poor	Waxing gibbous	97%	39
2026-10-25	Poor	Full moon	100%	38
2026-10-26	Poor	Full moon	99%	38
2026-10-27	Poor	Waning gibbous	97%	39
2026-10-28	Fair	Waning gibbous	91%	41
2026-10-29	Fair	Waning gibbous	84%	45

Rating combines moon illumination (SunCalc, offline math), cloud cover (Open-Meteo, live) and Holbox biolum-season phenology. This is a viewing potential estimate, not a guarantee — currents, temperature and dinoflagellate concentration all affect what you actually see.