July weather forecast
Haikou, China

Hit by the summer's zenith, temperatures in July peak at a scorching 33.1°C (91.6°F), marking the hottest month of the year in Haikou. The humid, mist-laden air moves heavily through the city, a stark contrast to the relatively cooler conditions of June. Rainfall remains generous, ensuring the cityscape remains suffuse with lush, flourishing tropical flora. This rainy, sun-drenched period heralds the intense summer, inviting the brave to experience Haikou at its warmest.

Temperature

July, recording an average high temperature of 33.1°C (91.6°F) and a low temperature of 25.5°C (77.9°F), is Haikou's warmest month.

Heat index

July's average heat index is calculated to be a blazing hot 50°C (122°F). Vigilance: Heat cramps and heat exhaustion are likely. The likelihood of heatstroke increases with continued activity.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Haikou, the average relative humidity in July is 82%.

Rainfall

In Haikou, in July, it is raining for 15 days, with typically 218mm (8.58") of accumulated precipitation. Throughout the year, there are 145 rainfall days, and 1652mm (65.04") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 29.5°C (85.1°F), July is the month with the warmest seawater.
Note: Surface water temperatures falling between 25°C (77°F) and 29°C (84.2°F) are regarded as prime and extremely agreeable for enduring periods during any water activity.

Daylight

In Haikou, China, the average length of the day in July is 13h and 13min.
On the first day of the month, sunrise is at 06:03 and sunset at 19:22. On the last day of July, sunrise is at 06:14 and sunset at 19:16 CST.

Sunshine

July has the most sunshine of the year, with an average of 8.1h of 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 ultimate health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 12 during July translates into the following directions:
Enforce every vital precaution. Those with light skin could endure burns in a matter of minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Watch out! Reflections from sand and water can surge UV radiation exposure.