April weather forecast
Chiang Rai, Thailand

April brings an even hotter environment to Chiang Rai, with a considerable increase in rainfall compared to the previous months. The precipitation rate noted is significant at 98mm (3.86"). With an increased UV index, sun protection becomes a priority for anyone spending ample time outdoors. Even with these weather shifts, the exotic locale of Chiang Rai manages to enthral its visitors. A blend of sunny and rainy spells makes Chiang Rai unpredictable and appealing during April.

Temperature

The highest temperatures in Chiang Rai are recorded in April, with averages reaching a high of 34.8°C (94.6°F) and a low of 20.6°C (69.1°F).

Heat index

The heat index in April is estimated at a blazing hot 47°C (116.6°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in April in Chiang Rai is 66%.

Rainfall

In April, in Chiang Rai, the rain falls for 10 days. Throughout April, 98mm (3.86") of precipitation is accumulated. In Chiang Rai, during the entire year, the rain falls for 137 days and collects up to 1691mm (66.57") of precipitation.

Daylight

In Chiang Rai, the average length of the day in April is 12h and 36min.
On the first day of April, sunrise is at 06:13 and sunset at 18:34. On the last day of the month, sunrise is at 05:51 and sunset at 18:43 +07.

Sunshine

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

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 12 in April leads to these recommendations:
Take all critical precautions, unprotected skin might burn swiftly. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Directly after outdoor activities or swimming, a broad-spectrum sunscreen with SPF 30+ should be applied generously and reapplied frequently.