May does not see a relentless rise in temperature as
April but rather a consistency in warmth. There's a significant rise in rainfall, the highest so far, going up to 127mm (5"), distributed across 14 days. It causes an increase in relative humidity to 77%, leading to a humid, almost wet, environment. Outdoor enthusiasts would be wise to plan activities around the weather, with the understanding that frequent showers, intermittently heavy, will occur. With daylight available for around 12.7 hours, the change from sultriness to gentle showers, with occasional thundershowers, can be witnessed within a single day.
Temperature
May's climate in
Prachuap Khiri Khan shows a minor adjustment in average high-temperatures to a still hot 33.5°C (92.3°F) from April's 34°C (93.2°F). In Prachuap Khiri Khan, May's nights observe an average temperature dip to a moderately hot 25.3°C (77.5°F).
Heat index
The heat index for May is computed to be a burning hot 49°C (120.2°F).
Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Consider that heat index readings are for situations in the shade and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In Prachuap Khiri Khan, the average relative humidity in May is 77%.
Rainfall
In Prachuap Khiri Khan,
Thailand, in May, it is raining for 14 days, with typically 127mm (5") of accumulated precipitation. In Prachuap Khiri Khan, during the entire year, the rain falls for 128 days and collects up to 1092mm (42.99") of precipitation.
Daylight
The average length of the day in May in Prachuap Khiri Khan is 12h and 40min.
On the first day of the month, sunrise is at 06:01 and sunset at 18:34. On the last day of May, in Prachuap Khiri Khan, Thailand, sunrise is at 05:55 and sunset at 18:41 +07.