Mosquitoes on Cruise Ships

Mosquitoes are one of the most annoying insects that we all have to deal with!

On top of this they are also the deadliest creature in existence! Each year there are more than a million people who die from mosquito related diseases!

But do mosquitoes exist on cruise ships? And what if you were to leave the cruise ship to take part in a shore excursion?
Mosquitoes on your Cruise

Will I have to deal with mosquitoes on my cruise?

The answer is: Yes, but the probability of encountering one on a cruise ship dramatically decreases when the ship is out at sea.

Mosquitoes do not travel and thus tend to stay near breeding areas which are places where stagnant water is located. If there is no stagnant water near any of your ports than you will likely not have to deal with any mosquitoes during your time onboard a cruise ship.

Will I have to deal with mosquitoes when I get off the cruise ship?

The answer is: Yes, there is a very good chance you will have to deal with mosquitoes when you get off the cruise ship.

When it comes to getting off the cruise ship and engaging in shore excursions there are many factors that play into the chances of dealing with mosquitoes such as temperature, rainfall, and whether or not there is stagnant water nearby.


The first factor is temperature. Mosquito season starts when temperatures maintain a consistent temperature of over 50 degrees Fahrenheit. If you are taking an Alaskan cruise during the winter then you will not encounter mosquitoes. Unfortunately most cruises take place in the Caribbean or other places with similar warm temperatures.


One of the main factors that contribute to the mosquito population is rainfall; mosquitoes only need an inch of stagnant water in order to lay their eggs, so the more it rains the more potential areas are created for mosquitoes to multiply. If you are visiting an area with lush green foliage, then you better believe you will be dealing with mosquitoes!

Stagnant Water

In just under 10 days mosquito larvae will develop into a blood sucking adult mosquito. If you are visiting areas that have a lot of ponds, swamps, or areas where stagnant water collects then you definitely need to bring your mosquito repellent!

For more information on factors that contribute to the mosquito population: Mosquito Season

What about ZIKA?

Mosquitoes can and will transmit the Zika virus in areas where transmission of the virus is active. It is critical that pregnant women avoid traveling to these areas at all cost during their pregnancy. Do not assume that you will be safe from the virus if you stay on the cruise ship!

Quote from CDC.GOV:

“Because there is neither a vaccine nor prophylactic medications available to prevent Zika virus infection, CDC recommends that all pregnant women consider postponing travel to areas where Zika virus transmission is ongoing.”

If you already booked your cruise and you are worried about going to an area where the Zika virus is prevalent; call your cruise line and request a cancelation on this basis. Most cruise lines will either refund your entire cruise cost or give you a credit for a future cruise.