July weather forecast
Chiang Rai, Thailand

July in Chiang Rai is known for its highest rainfall, measuring at 311mm (12.24"), making it the wettest month of the year. As the destination is in full swing of the rainy season, there are fewer daylight hours. The persistent rainfall brings about a mystical aura, transforming the city into a moist and green paradise. Humidity is at its peak, but the continuous rain keeps the overall temperature in check. For people who enjoy the monsoons, this is the month to witness Chiang Rai in its most authentic form.

Temperature

The high-temperature average in July for Chiang Rai is a still tropical 31.1°C (88°F), staying closely aligned with June's conditions. July in Chiang Rai witnesses an average low-temperature hovering around a warm 23.4°C (74.1°F).

Heat index

The average heat index in July is estimated at a blisteringly hot 42°C (107.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in July is 82%.

Rainfall

In Chiang Rai, in July, it is raining for 22 days, with typically 311mm (12.24") of accumulated precipitation. In Chiang Rai, during the entire year, the rain falls for 137 days and collects up to 1691mm (66.57") of precipitation.

Daylight

In July, the average length of the day is 13h and 12min.
On the first day of July, sunrise is at 05:45 and sunset at 19:04. On the last day of the month, sunrise is at 05:56 and sunset at 18:58 +07.

Sunshine

June through August, with an average of 5h of sunshine, are months with the least sunshine.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 12 during July, leads to the following recommendations:
Implement all key precautions. Warding off sun damage is critical. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Sunscreen of at least SPF 30 should be applied generously and reapplied often on overcast days, especially post swim or outdoor exercise.