Just how bad are the mosquitoes on Thai islands, and are they seasonal?

Mosquitoes are worst (anywhere) early morning and late afternoon/early evening. In Thailand, they are also worse June–October.

In Thailand, mosquitoes are at their worst during and just after the rainy season (June through October), but they are a nuisance all year round—though the risk of catching Dengue Fever and Japanese B encephalitis from one of them is greater during the rainy season.

However, it's really more a time-of-day, issue than a time-of-year one. Mosquitoes are out feeding in the early morning and again in the late afternoon/early evening. In the end, it's easiest just to plan to be indoors during these swarming hours.

In general:

That said, Thai islands are actually infinitely better than the Thailand interior when it comes to flying blood-suckers—if for no other reason than the steady light breeze coming off the water keeps them at bay.

Seriously; you can be sitting at a beachside restaurant, completely bug-free, then walk just one block inland to where the buildings cut off the breeze, and all of a sudden it's feeding frenzy time for mosquitoes.

This is also an argument for splurging on a sea-view room at a beachside hotel rather than saving a bit of money by booking a hotel even a block inland from the shore. Those breezes really can make all the difference.

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This article was by Reid Bramblett and last updated in April 2011.
All information was accurate at the time.

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Copyright © 1998–2013 by Reid Bramblett. Author: Reid Bramblett.