April weather forecast
Bangkok, Thailand

April distinguishes itself by hosting the most torrid conditions in Bangkok, Thailand throughout the year. This month witnesses the zenith of temperature, soaring up to 35.4°C (95.7°F), making it the warmest period in the city. Concurrently, precipitation accelerates sharply, attaining 91mm (3.58"), spread across six days of rainfall. These weather conditions create a unique blend of scorching heat and refreshing rain. With the end of the month, the city hints at a substantial rise in relative humidity, making way for a more cool atmosphere in May.

Temperature

April, with average temperatures reaching a high of 35.4°C (95.7°F) and a low of 26.9°C (80.4°F), is the warmest month.

Heat index

During April, the heat index is estimated at a life-threatening hot 53°C (127.4°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
The standards for the heat index are set for locations in shade and under light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Bangkok, Thailand, the average relative humidity in April is 72%.

Rainfall

In Bangkok, in April, during 6 rainfall days, 91mm (3.58") of precipitation is typically accumulated. In Bangkok, during the entire year, the rain falls for 128 days and collects up to 1648mm (64.88") of precipitation.

Sea temperature

In Bangkok, Thailand, the average seawater temperature in April is 29.4°C (84.9°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in April is 12h and 26min.
On the first day of April in Bangkok, sunrise is at 06:13 and sunset at 18:29. On the last day of the month, sunrise is at 05:56 and sunset at 18:33 +07.

Sunshine

In Bangkok, the average sunshine in April is 8.6h.

UV index

The months with the highest UV index in Bangkok, Thailand, are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: An average maximum UV index of 12 in April leads to these recommendations:
Carry out all crucial safety measures, unprotected skin may burn instantly. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise. Stay aware! UV radiation is magnified when reflecting off sand and water.