April weather forecast
Surat Thani, Thailand

April in Surat Thani means entering the peak of the hot season, characterized by high temperatures and increased precipitation. As the month progresses, heavier bouts of rain can be expected, packaged with soaring UV index. With a leap in the average rainfall to 73mm (2.87") over seven days compared to 24mm (0.94") in March, this month marks the commencement of the wetter part of the year. The humidity level persists in the high range, adding to the hot and steamy conditions. Still, the increase in sea and air temperatures doesn't interfere with outdoor activities, thanks to the lengthy daylight hours.

Temperature

In Surat Thani, April is the warmest month, with temperatures averaging a high of 35°C (95°F) and a low of 23.4°C (74.1°F).

Heat index

For most parts of April, the heat index is computed to be a life-threatening hot 55°C (131°F). Warning: These weather conditions are acknowledged as overly dangerous, and heatstroke is inevitable.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In April, the average relative humidity is 77%.

Rainfall

In Surat Thani, in April, it is raining for 7 days, with typically 73mm (2.87") of accumulated precipitation. Throughout the year, there are 159 rainfall days, and 1622mm (63.86") of precipitation is accumulated.

Sea temperature

The months with the warmest seawater are April through June, with an average sea temperature of 30°C (86°F).
Note: Water temperatures exceeding 30°C (86°F) can be viewed as uncomfortable, especially when the primary intention is to cool down from intense heat.

Daylight

In Surat Thani, the average length of the day in April is 12h and 20min.
On the first day of the month, sunrise is at 06:19 and sunset at 18:33. On the last day of April, sunrise is at 06:06 and sunset at 18:33 +07.

Sunshine

In Surat Thani, the average sunshine in April is 8h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 12 in April translates into the following instructions:
Carry out all crucial safety measures, unprotected skin may burn instantly. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Frequent application of a broad-spectrum SPF 30+ sunscreen is crucial, reapply it every two hours or immediately post swimming or outdoor exercise. Notice! The reflection of water and sand increases the UV radiation significantly.