April weather forecast
Pattiya, Sri Lanka

April, like March, is another hot spring month in Pattiya, Sri Lanka, with an average temperature varying between 31.3°C (88.3°F) and 26°C (78.8°F).

Temperature

In Pattiya, March and April are characterised by the peak of temperatures, recording an average high of 31.3°C (88.3°F).

Heat index

In April, the heat index is computed to be an extremely hot 41°C (105.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In April, the average relative humidity is 78%.

Rainfall

In Pattiya, during April, the rain falls for 25.8 days and regularly aggregates up to 127mm (5") of precipitation. Throughout the year, in Pattiya, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

In April, the average length of the day in Pattiya is 12h and 16min.
On the first day of the month, sunrise is at 06:08 and sunset at 18:19. On the last day of April, sunrise is at 05:56 and sunset at 18:18 +0530.

Sunshine

The average sunshine in April in Pattiya is 9h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Pattiya. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum daily UV index of 7 during April morphs into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.