August weather forecast
Haikou, China

August weather mirrors that of July, but with a marginal decrease in temperature, reversing the ascent begun in June. Rainfall peaks in August, resulting in increased humidity and occasionally cloudy days. The powerful sun and rainfall act together to ensure that Haikou's tropical landscapes remain awash in hues of green and yellow. This period promises a refreshing experience for those seeking the city's tropical essence at its peak.

Temperature

During August, Haikou records an average high-temperature of a still hot 32.3°C (90.1°F), marking a slight divergence from July's 33.1°C (91.6°F). Haikou experiences a nighttime temperature average of 25.3°C (77.5°F) during August.

Heat index

August's mean heat index is calculated to be a burning hot 48°C (118.4°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Heat index determinations are made taking into account the shade and light air movements. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in August in Haikou is 85%.

Rainfall

In Haikou, during August, the rain falls for 14.9 days and regularly aggregates up to 236mm (9.29") of precipitation. In Haikou, during the entire year, the rain falls for 145 days and collects up to 1652mm (65.04") of precipitation.

Sea temperature

In Haikou, China, in August, the average water temperature is 28.8°C (83.8°F).
Note: A water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm and enjoyable, allowing water activities to be pleasant for extended periods without irritation.

Daylight

The average length of the day in August in Haikou is 12h and 48min.
On the first day of August in Haikou, China, sunrise is at 06:14 and sunset at 19:16. On the last day of the month, sunrise is at 06:23 and sunset at 18:55 CST.

Sunshine

In August, the average sunshine is 7h.

UV index

The months with the highest UV index in Haikou are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 12 during August translates into the following directions:
Carry out all crucial safety measures, unprotected skin may burn instantly. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Boost your sun resistance with garments that are densely woven yet spacious. Ensure the liberal application and reapplication of a broad-spectrum SPF 30+ sunscreen after each outdoor activity or swim, and every two hours. Beware! Reflections from sand and water can intensify the Sun's UV radiation.