Chiang Mai
Thailand
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Chiang Mai, Thailand

The stunning aerial panorama of the fantastic Two Pagoda on top of the Doi Inthanon mountain in Chiang Mai, Thailand
The stunning aerial panorama of the fantastic Two Pagoda on top of the Doi Inthanon mountain in Chiang Mai, Thailand
April, like March, in Chiang Mai, Thailand, is another sweltering spring month, with average temperature fluctuating between 36.5°C (97.7°F) and 22.9°C (73.2°F).

Temperature

The warmest month is April, with an average high-temperature of 36.5°C (97.7°F) and an average low-temperature of 22.9°C (73.2°F).

Heat index

The average heat index is calculated to a burning hot 48.1°C (118.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like wind, pregnancy, clothing, 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 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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

The average relative humidity in Chiang Mai is 57%.

Rainfall

In Chiang Mai, it is raining for 6 days, with typically 57.3mm (2.3") of accumulated precipitation. In Chiang Mai, during the entire year, the rain falls for 113 days and collects up to 1130.6mm (44.5") of precipitation.

Daylight

The average length of the day in April is 12.6h.

Sunshine

In April, the average sunshine in Chiang Mai is 8.6h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Mai?

The warmest month in Chiang Mai, Thailand, is April, with an average high-temperature of 36.5°C (97.7°F) and an average low-temperature of 22.9°C (73.2°F).

What is the temperature in April in Chiang Mai?

In April, in Chiang Mai, Thailand, the average high-temperature is 36.5°C (97.7°F), and the average low-temperature is 22.9°C (73.2°F). In April, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines relative humidity and air temperature, is estimated at 48.1°C (118.6°F).

What is the average humidity in April in Chiang Mai?

The average relative humidity in April in Chiang Mai is 57%.

How much does it rain in Chiang Mai in April?

In Chiang Mai, in April, it is raining for 6 days, with typically 57.3mm (2.3") of accumulated precipitation.

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

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

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

In Chiang Mai, Thailand, the average sunshine in April is 8.6h.

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

March through September, with an average maximum UV index of 12, are months with the highest UV index in Chiang Mai.

What is the UV index reading in April in Chiang Mai?

In Chiang Mai, Thailand, the average daily maximum UV index in April is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in April - Chiang Mai, Thailand
  • Average high temperature in April: 36.5°C

The warmest month (with the highest average high temperature) is April (36.5°C).
The month with the lowest average high temperature is December (28.6°C).

  • Average low temperature in April: 22.9°C

The month with the highest average low temperature is June (24°C).
The coldest month (with the lowest average low temperature) is January (14.9°C).

Average humidity in April - Chiang Mai, Thailand
  • Average humidity in April: 57%

Months with the highest relative humidity are August and September (81%).
The month with the lowest relative humidity is March (52%).

Average rainfall in April - Chiang Mai, Thailand
  • Average rainfall in April: 57.3mm

The wettest month (with the highest rainfall) is August (216.9mm).
The driest month (with the lowest rainfall) is January (4.2mm).

Average rainfall days in April - Chiang Mai, Thailand
  • Average rainfall days in April: 6 days

The month with the highest number of rainy days is September (20 days).
Months with the lowest number of rainy days are January and December (1 days).

Average daylight in April / Average sunshine in April - Chiang Mai, 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: 11h).

  • Average sunshine in April: 8.6h

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

Average UV index in April - Chiang Mai, 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 8).