The climate in Rayong during May can be summarized as very hot, humid and very wet.
May is in the spring in Rayong and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 26°C (80°F) is normal.
|Daytime temperature||32.6°C 90.7°F|
|Nightly temperature||26.4°C 79.5°F|
|Average temperature||29.5°C 85.1°F|
|Daily sunshine||6.3 hrs|
|Avg rainfall||228 mm 9 ins|
|Rainy days||15 days|
|Sea temperature||30.5°C 86.9°F|
|Windspeed||9kph 6 mph|
On average May is the 3rd wettest month of the year in Rayong with around 228mm 9 inches of rain making it a very wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rayong in May 2021.
|Hottest month:||April||33.2°C 91.8°F|
|Driest month:||December||14mm 0.6ins|
|Coldest month:||December||30.9°C 87.6°F|
|Wettest month:||September||305mm 12ins|