, the same as December
, in Ko Lanta
, is a hot winter month, with an average temperature fluctuating between 23.9°C (75°F) and 32.7°C (90.9°F).
In January, the average high-temperature is relatively the same as in December - a still hot 32.7°C (90.9°F). The average low-temperature, in January, is 23.9°C (75°F).
The average heat index in January is computed to be a life-threatening hot 45°C (113°F). Be wary
: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.Note
: The heat index, also known as 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, clothing), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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.
The average relative humidity in January is 75%.
January is the month with the least rainfall in Ko Lanta. Rain falls for 3 days and accumulates 15mm (0.59") of precipitation.
In January, the average length of the day is 11h and 44min.
On the first day of January in Ko Lanta, sunrise is at 06:36 and sunset at 18:17. On the last day of the month, sunrise is at 06:43 and sunset at 18:31 +07.