August weather forecast
Hai Phong, Vietnam

August ushers in the wettest period of the year in Hai Phong. Despite the decrease in temperature from the peak in July, the weather remains hot and humid. In addition, the short bursts of rainfall seen in July become more frequent and intense, leading to higher relative humidity. The rain reaches its maximum level from 312mm (12.28") in July to 473mm (18.62") in August. August signals the closure of summer with its wet and stormy weather conditions interspersed with warm and sunny intervals.

Temperature

The shift into August reveals an average high-temperature of a still hot 31.5°C (88.7°F), closely mirroring July's climate. Hai Phong, during the month of August, experiences an average low-temperature of 25.3°C (77.5°F).

Heat index

August's average heat index is computed to be a life-threatening hot 46°C (114.8°F). Keep alert: Heat cramps and heat exhaustion are probable. Heatstroke is a potential danger with continued physical activity.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. 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', is found by incorporating humidity levels into the air temperature measurement. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In August, the average relative humidity is 88%.

Rainfall

August is the month with the most rainfall. Rain falls for 15.3 days and accumulates 473mm (18.62") of precipitation.

Sea temperature

In Hai Phong, in August, the average water temperature is 30.2°C (86.4°F).
Note: Cooling down in waters with temperatures over 30°C (86°F) might not feel as satisfying.

Daylight

In August, the average length of the day is 12h and 50min.
On the first day of August in Hai Phong, sunrise is at 05:27 and sunset at 18:31. On the last day of the month, sunrise is at 05:36 and sunset at 18:10 +07.

Sunshine

In Hai Phong, the average sunshine in August is 5.7h.

UV index

March through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 12 during August translates into these guidelines:
Enforce every vital precaution. Those with light skin could endure burns in a matter of minutes. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout. Attention! UV strength is notably upped by the reflection of sand and water.