Summary of the sources linked above. Verify anything time sensitive.
Prices and times are estimates. Check with the operator before you book.
Is Puerto Rico in a drought right now?
According to TravelAge West, yes. The outlet has published a briefing for travel advisors on Puerto Rico's drought (TravelAge West). When the trade press starts explaining a water situation to the people who sell the island, it has usually gone past the point of being a one-week dry spell.
What that does not mean is that the island is closed. A drought headline is not a closure notice. The effects a visitor is most likely to notice are smaller and more annoying: lower water pressure on upper floors, pools on reduced hours, fountains and gardens switched off, laundry service trimmed back. None of that ruins a trip. All of it is worth a question before you commit to a nonrefundable rate.
What to ask your hotel before you book
Send three questions by email so the answers sit in writing. Has the property had any water service interruptions in the past month? Is the pool open and filled for my dates? What is the cancellation window if conditions change?
A hotel that answers those clearly is a hotel that is on top of the situation. One that replies with a copy-paste welcome message is telling you something too. Ask as well whether the property has on-site water storage, since a building with a tank rides out a pressure drop better than one without.
On the ground, bottled water is cheapest at a supermarket rather than a hotel shop, and it is worth buying a few litres on day one if you are heading somewhere small. Do not cancel a whole trip over a drought story. Base the decision on the answers you get from the specific property you booked, not on an island-wide headline.
Vieques' bio bay has gone dark: check before you pay
This is the item that should actually change an itinerary. Primera Hora reports that Puerto Mosquito on Vieques has gone months without recovering its characteristic glow, and that scientist measurements came back at zero for the dinoflagellate that produces most of the light (Primera Hora). Researchers are still investigating what happened.
Puerto Mosquito is the bay that anchors most Vieques night tours, so if you have already booked a kayak trip, this is the week to ask questions. Ask the operator for glow reports from the past two weeks, not last season. Ask what happens if the bay does not light up: a reroute, a partial refund, or a full one. Get that answer in writing before you pay.
Even a healthy bay is moon-dependent. Book near a new moon if you can, because bright moonlight flattens the glow in any bay, and the gap between a good night and a disappointing one is often just the calendar. Do not cancel Vieques over this. The beaches and the wildlife refuge are why most people go back. Just do not pay for the glow on faith. More on the island in our Vieques guide and our bioluminescent bays guide.
How to plan around Sunday's storms
Separate story, same week. Meteorology is forecasting rain and thunderstorms that could affect Puerto Rico this Sunday, with conditions favourable for afternoon showers (Primera Hora). Today is Sunday 18 October, so this is not a long-range guess.
Front-load anything outdoors. Walk Old San Juan in the morning rather than at 3 PM. If El Yunque is on your list, go early and treat the afternoon as a write-off for hiking, since the rainforest usually builds its own rain after lunch anyway (El Yunque guide). Keep a museum or a long lunch as the wet-weather card you can play without thinking.
If you are flying out today, expect the familiar pattern: storms build, delays stack, the 6 PM departure slips. A morning flight is the boring and correct choice.
What to book instead if the bay stays dark
You have two swaps. First, Fajardo's Laguna Grande is the bay most travelers pair with a San Juan trip, and it is worth putting the same two questions to an operator there before you pay (Fajardo guide). Second, replace the night tour with a daytime Vieques plan and move the money to a beach day.
For a wet afternoon, there is one live event worth knowing about if your dates line up: Marcos Llunas plays an intimate concert in Puerto Rico on 13 November (Primera Hora).
In a week with both a drought and a storm forecast, avoid prepaying nonrefundable tours and rooms. Refundable is not a splurge here. It is the whole strategy, and it costs less than one rescheduled night tour.
What to check in the 48 hours before you fly
Confirm the hotel's water answer in writing. Check whether your bio bay operator has run tours in the past week and what those trips reported. Look at the rain forecast for the day you land, not for the week. Keep one indoor plan per day so a storm does not wipe out the schedule.
Travelers staying in San Juan or Isla Verde have an easier time of it than people doing a multi-island run, because the city has more backup options when an afternoon turns. If your trip leans heavily on Vieques or Culebra, build in one buffer day so a washed-out night does not eat the whole itinerary. Our Puerto Rico guide covers the broader planning side.
Best tours and tickets in Vieques
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Frequently asked questions
Is Puerto Rico in a drought right now?
Is the Vieques bioluminescent bay still glowing?
Should I cancel my Vieques trip because of the bay?
Will storms on Sunday ruin my plans?
What if my bio bay tour does not glow?
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