April weather forecast and climate
Bangkok, Thailand

A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
A beautiful park outside the Wat Ratchanatdaram Temple in the heart of Bangkok, Thailand
April is a very hot spring month in Bangkok, Thailand, with average temperature varying between 35.4°C (95.7°F) and 26.9°C (80.4°F).

Temperature

April is the warmest month, with an average high-temperature of 35.4°C (95.7°F) and an average low-temperature of 26.9°C (80.4°F).

Heat index

In April, the average heat index is estimated at a blazing hot 53.1°C (127.6°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. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, metabolic differences, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Bangkok, the average relative humidity is 72%.

Rainfall

In Bangkok, Thailand, it is raining for 6 days, with typically 91.4mm (3.6") of accumulated precipitation. In Bangkok, Thailand, during the entire year, the rain falls for 128 days and collects up to 1648.2mm (64.89") of precipitation.

Sea temperature

In Bangkok, 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

In Bangkok, the average length of the day is 12.4h.

Sunshine

In Bangkok, the average sunshine is 8.6h.

UV index

Months with the highest UV index in Bangkok are February through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the warmest month in Bangkok?

With an average high-temperature of 35.4°C (95.7°F) and an average low-temperature of 26.9°C (80.4°F), April is the warmest month in Bangkok.

What is the temperature in April in Bangkok?

In April, the average high-temperature is 35.4°C (95.7°F), and the average low-temperature is 26.9°C (80.4°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines relative humidity and air temperature, in April is evaluated at 53.1°C (127.6°F).

What is the average humidity in April in Bangkok?

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

How many days does it rain in April in Bangkok?

In April, in Bangkok, Thailand, the rain falls for 6 days. Throughout April, 91.4mm (3.6") of precipitation is accumulated.

What is the sea water temperature in April in Bangkok?

In Bangkok, Thailand, the average seawater temperature in April is 29.4°C (84.9°F). 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.

What is the average length of the day in April in Bangkok?

In Bangkok, Thailand, the average length of the day in April is 12.4h.

How many hours of sunshine does Bangkok have in April?

The average sunshine in April in Bangkok, Thailand, is 8.6h.

What are the months with the highest UV index in Bangkok?

Months with the highest UV index in Bangkok are February through September, with an average maximum UV index of 12.

What is the UV index reading in April in Bangkok?

In April, the average daily maximum UV index in Bangkok, Thailand, is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in April - Bangkok, Thailand
  • Average high temperature in April: 35.4°C

The warmest month (with the highest average high temperature) is April (35.4°C).
The month with the lowest average high temperature is December (31.7°C).

  • Average low temperature in April: 26.9°C

The month with the highest average low temperature is April (26.9°C).
The coldest month (with the lowest average low temperature) is December (22°C).

Average humidity in April - Bangkok, Thailand
  • Average humidity in April: 72%

The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is December (66%).

Average rainfall in April - Bangkok, Thailand
  • Average rainfall in April: 91.4mm

The wettest month (with the highest rainfall) is September (334.3mm).
The driest month (with the least rainfall) is December (6.3mm).

Average rainfall days in April - Bangkok, Thailand
  • Average rainfall days in April: 6 days

The month with the highest number of rainy days is September (21 days).
Months with the least rainy days are January and December (1 days).

Average sea temperature in April - Bangkok, Thailand
  • Average sea temperature in April: 29.4°C

The best month for swimming (with the highest average sea temperature) is May (29.9°C).
The coldest month (with the lowest average sea temperature) is January (26.7°C).

Average daylight in April / Average sunshine in April - Bangkok, Thailand
  • Average daylight in April: 12.4h

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in April: 8.6h

The month with the most sunshine is February (Average sunshine: 9h).
Months with the least sunshine are August and September (Average sunshine: 5.2).

Average UV index in April - Bangkok, Thailand
  • Average UV index in April: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).