November through to February sees the perfect weather combo: very little rain and hot but not too hot temperatures (average highs of 31degrees Celsius, lows of around 21-22C). This is the busiest time on the Pattaya tourist calendar, so expect high season prices. 

March, April and May are the hottest months, temperatures averaging highs of 33 degrees Celsius and lows of between 25 and 27. It is scorching hot and sticky; often unpleasantly so. The sea breeze helps but the humidity is very high. Often there is a bit of rain to clear the air, especially toward the end of April and into May. 

The intense but usually brief downpours between June and October make this low season for tourists (and breeding season for mosquitoes). Rarely, though, does it rain all day or night. Temperatures fluctuate in the low 30s during the day; and between 25-27degrees Celsius at night. Still a good time to come as the bars and beaches are less crowded, hotel rates lower and there’s still lots of tenacious sunshine.