At a glance
Holbox in September: the essentials
- Temperature
- 24–32°C
- Sea
- 29°C
- Rain
- 130 mm · 12 days
- Sun
- ~6 h/day
- Wind
- variable · 18 km/h
- Hurricanes
- high risk
- Whale shark
- late season
- Bioluminescence
- good
- Sargassum
- moderate
- Crowds
- low
- Hotels
- budget
Monthly weather
Holbox weather in September
In September, Holbox has highs of 32°C (90°F) and lows of 24°C (75°F). Sea surface temperature averages 29°C (84°F) — warm and pleasant. With about 6 hours of sun per day on average, rain is constant: we record 12 days with precipitation in a typical month (total: ~130 mm).
The prevailing breeze is variable at around 18 km/h — enough to cool the heat without canceling boat trips.
Wildlife
What wildlife is active in September
We are in the late season for whale sharks — the season closes on September 17. If this is your only window, book as early as possible.
Bioluminescence quality is good this month. On new moon or quarter-moon nights, a nighttime kayak tour is worth booking.
Pink flamingos are abundant at Punta Mosquito and the inner lagoons. Best time: before 9 am or at sunset, at low tide.
Sargassum
Sargassum in Holbox in September
Sargassum level is moderate in September, although Holbox remains one of the least affected beaches in the Mexican Caribbean. LANOT-UNAM satellite monitoring confirms occasional but manageable arrivals at this time.
Crowds & prices
How crowded is Holbox in September?
September is low season. Crowds are low and hotels are budget. You can book with just days of notice and find better rates.
What to pack
Packing list for Holbox in September
- Mineral sunscreen (mandatory for marine wildlife tours)
- Swimsuit and light towel
- Sunglasses and hat
- Light rain jacket or poncho (afternoon showers, short but intense)
- Cotton or linen clothing (heat with humidity feels heavy)
- Water shoes in case of sargassum on the shore
- DEET 20–30% repellent (mangroves breed mosquitoes year-round)
- Cash in Mexican pesos (many places do not accept cards)
Verdict
Is September a good time to visit Holbox?
September is the peak of hurricane season. Prices are the lowest of the year and the few visitors have the island nearly to themselves, but there is a real risk of cancellations. Recommended only with travel insurance and flexible flights.
Frequently asked questions
What people ask
What is the weather like in Holbox in September?
In September, Holbox has highs of 32°C (90°F) and lows of 24°C (75°F), with sea temperature at 29°C. Expect about 12 rain days and 6 sun hours per day. Winds are predominantly from the east.
Is there sargassum in Holbox in September?
There is moderate sargassum presence in September, though Holbox remains less affected than the rest of Quintana Roo. LANOT-UNAM monitors the situation via satellite.
Can you see whale sharks in Holbox in September?
Yes, you are still in season — but the window closes on September 17. If this is your only chance, book as early as possible.
Is September a good month to visit Holbox?
It depends on your priorities. If you prioritize price and quiet, yes — it is low season with the lowest prices. See the Verdict section below for the full analysis.
How much does a hotel cost in Holbox in September?
September is low season. Prices 20–40% below the annual average. Boutique hotels from $85 USD, budget from $40 USD. You can book with just days of notice.
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