August weather forecast
Chiang Mai, Thailand

August experiences one of the most voluminous and consistent rainfall in Chiang Mai, with 217mm (8.54") spreading over 18 days. The weather, hence, is cooler than the scorching heat of the summer but continues to be humid. The touchdown of heavy showers doesn't drastically decrease the temperatures. With 13.1 hours of daylight, August gives an authentic taste of tropical monsoons. Visitors in August can witness Chiang Mai in its rain-laden glory.

Temperature

Chiang Mai greets August with an average high-temperature of a still tropical 31.5°C (88.7°F), marking a slight deviation from the preceding month. In Chiang Mai, the average low-temperature during the month of August is a warm 23.7°C (74.7°F).

Heat index

In August, the average heat index is evaluated at an extremely hot 43°C (109.4°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', comes about by integrating the temperature readings with the humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the highest humidity in Chiang Mai are August and September, with an average relative humidity of 81%.

Rainfall

August is the month with the most rainfall. Rain falls for 18 days and accumulates 217mm (8.54") of precipitation.

Daylight

In Chiang Mai, the average length of the day in August is 12h and 45min.
On the first day of August, sunrise is at 06:01 and sunset at 18:59. On the last day of the month, sunrise is at 06:09 and sunset at 18:39 +07.

Sunshine

August and September, with an average of 5.2h of sunshine, are months with the least sunshine in Chiang Mai.

UV index

The months with the highest UV index in Chiang Mai, Thailand, are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 12 during August leads to these advisories:
Put into action all important safeguards, unprotected skin may burn swiftly. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. One should apply and reapply liberally a broad-spectrum sunscreen of SPF 30+ every two hours and immediately after a swim or an outdoor exercise.