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

In Bangkok, the peak average temperatures are observed in April, with a high of 35.4°C (95.7°F) and a low of 26.9°C (80.4°F).

Heat index

The heat index value during April is calculated to be a blazing hot 53°C (127.4°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

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

Rainfall

In Bangkok, in April, it is raining for 6 days, with typically 91mm (3.58") of accumulated precipitation. Throughout the year, in Bangkok, there are 128 rainfall days, and 1648mm (64.88") of precipitation is accumulated.

Sea temperature

In Bangkok, Thailand, in April, the average water temperature is 29.4°C (84.9°F).
Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

In April, the average length of the day in Bangkok 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

The average sunshine in April in Bangkok is 8.6h.

UV index

The months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 12 during April translates into the following directions:
Employ all crucial safeguards, unprotected skin could burn rapidly. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Despite the cloudy weather, sunscreen with a sun protection factor of at least 30 should be liberally applied and reapplied, including after a swim or outdoor activity. Alert! UV radiation becomes sharper due to reflections from sand and water.