May weather forecast
Surat Thani, Thailand

May weather in Surat Thani steps up the rainfall steadily from April, shifting towards the monsoon. This month does not hold back on delivering tropical showers, with rainfall reaching a substantial average of 178mm (7.01"). Though the rainfall increases significantly, the temperatures do not drastically drop, keeping the tropical ambience intact. Despite the high humidity, sea temperatures and daylight hours remain consistent, offering a balanced mix of weather elements.

Temperature

May brings a marginal elevation to a hot 34°C (93.2°F) from April's 35°C (95°F) in Surat Thani's average high-temperatures. During the month of May, Surat Thani experiences a steady low-temperature average of 23.8°C (74.8°F).

Heat index

In May, the average heat index is computed to be a blazing hot 53°C (127.4°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely vital to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In May, in Surat Thani, the rain falls for 18 days. Throughout May, 178mm (7.01") of precipitation is accumulated. Throughout the year, there are 159 rainfall days, and 1622mm (63.86") of precipitation is accumulated.

Sea temperature

April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Surat Thani.
Note: It is often perceived that water temperatures beyond 30°C (86°F) lack the cooling effect desired during hot weather.

Daylight

In May, the average length of the day in Surat Thani is 12h and 32min.
On the first day of May, sunrise is at 06:06 and sunset at 18:33. On the last day of the month, sunrise is at 06:01 and sunset at 18:39 +07.

Sunshine

In May, the average sunshine in Surat Thani is 6h.

UV index

The months with the highest UV index in Surat Thani are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 12 during May leads to these advisories:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Stay sun-safe with clothing that is both closely woven and worn loosely. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Notice! The reflection of water and sand increases the UV radiation significantly.