Chiang Rai
Thailand
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Chiang Rai, Thailand

The White Temple of Wat Rong Khun with a waterfront fishpond in Chiang Rai, Thailand, on a beautiful cloudy day panorama
The White Temple of Wat Rong Khun with a waterfront fishpond in Chiang Rai, Thailand, on a beautiful cloudy day panorama
April, the same as March, in Chiang Rai, Thailand, is another hot spring month, with average temperature fluctuating between 34.8°C (94.6°F) and 20.6°C (69.1°F).

Temperature

April is the warmest month, with an average high-temperature of 34.8°C (94.6°F) and an average low-temperature of 20.6°C (69.1°F).

Heat index

The average heat index is appraised at a life-threatening hot 47.4°C (117.3°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. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like pregnancy, wind, metabolic differences, and activity influence one's weather impression. 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 particularly important for children. 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. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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 Chiang Rai, Thailand, the average relative humidity in April is 66%.

Rainfall

In Chiang Rai, Thailand, during 10 rainfall days, 97.9mm (3.9") of precipitation is typically accumulated. Throughout the year, there are 137 rainfall days, and 1690.5mm (66.6") of precipitation is accumulated.

Daylight

In April, the average length of the day is 12.6h.

Sunshine

In April, the average sunshine in Chiang Rai is 8h.

UV index

Months with the highest UV index in Chiang Rai are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In April, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect 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. 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.

What is the warmest month in Chiang Rai?

With an average high-temperature of 34.8°C (94.6°F) and an average low-temperature of 20.6°C (69.1°F), April is the warmest month in Chiang Rai, Thailand.

What is the temperature in April in Chiang Rai?

In April, in Chiang Rai, Thailand, the average high-temperature is 34.8°C (94.6°F), and the average low-temperature is 20.6°C (69.1°F). In April, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines relative humidity and air temperature, is appraised at 47.4°C (117.3°F).

What is the average humidity in April in Chiang Rai?

In April, the average relative humidity is 66%.

How many days does it rain in April in Chiang Rai?

In Chiang Rai, Thailand, during April, the rain falls for 10 days and regularly aggregates up to 97.9mm (3.9") of precipitation.

How many hours of daylight does Chiang Rai have in April?

In April, the average length of the day in Chiang Rai is 12.6h.

How many hours of sunshine does Chiang Rai have in April?

In Chiang Rai, Thailand, the average sunshine in April is 8h.

What are the months with the highest UV index in Chiang Rai?

Months with the highest UV index in Chiang Rai, Thailand, are March through September, with an average maximum UV index of 12.

What is the UV index intensity in April in Chiang Rai?

In April, the average daily maximum UV index in Chiang Rai, Thailand, is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in April - Chiang Rai, Thailand
  • Average high temperature in April: 34.8°C

The warmest month (with the highest average high temperature) is April (34.8°C).
The month with the lowest average high temperature is December (27.2°C).

  • Average low temperature in April: 20.6°C

The month with the highest average low temperature is June (23.6°C).
The coldest month (with the lowest average low temperature) is January (12.8°C).

Average humidity in April - Chiang Rai, Thailand
  • Average humidity in April: 66%

The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is March (62%).

Average rainfall in April - Chiang Rai, Thailand
  • Average rainfall in April: 97.9mm

The wettest month (with the highest rainfall) is August (358.4mm).
The driest month (with the lowest rainfall) is January (7.5mm).

Average rainfall days in April - Chiang Rai, Thailand
  • Average rainfall days in April: 10 days

The month with the highest number of rainy days is August (24 days).
The month with the lowest number of rainy days is February (1 days).

Average daylight in April / Average sunshine in April - Chiang Rai, Thailand
  • Average daylight in April: 12.6h

The month with the longest days is June (Average daylight: 13.3h).
The month with shortest days is December (Average daylight: 10.9h).

  • Average sunshine in April: 8h

The month with most sunshine is February (Average sunshine: 9h).
Months with least sunshine are June, July and August (Average sunshine: 5).

Average UV index in April - Chiang Rai, Thailand
  • Average UV index in April: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).