August weather forecast
Vavuniya, Sri Lanka

In August, the weather in Vavuniya continues its course towards a drier climate, gearing up to bid farewell to the monsoons. Although the temperature figures remain more or less consistent around this time, winds take the upper hand and blow stronger, contributing to a slightly cooler climate than July. With monsoons receding, the city wades back into sunny weather, albeit shrouded beneath a thick palate of clouds. A hint of the autumnal ambience begins to grace the city towards the end of the month, when the tranquil monsoon sunset gives way to the stunning hues of an autumn evening.

Temperature

Vavuniya, Sri Lanka, marks the start of August with an average high-temperature of a still tropical 32.8°C (91°F), hinting at a slight fluctuation from July's 33°C (91.4°F). Vavuniya, in August, witnesses an average low-temperature of 25.1°C (77.2°F).

Heat index

The average heat index in August is estimated at a blistering 43°C (109.4°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The months with the lowest humidity in Vavuniya, Sri Lanka, are July through September, with an average relative humidity of 71%.

Rainfall

In August, the rain falls for 12.1 days. Throughout August, 31mm (1.22") of precipitation is accumulated. Throughout the year, in Vavuniya, there are 199.1 rainfall days, and 893mm (35.16") of precipitation is accumulated.

Daylight

In Vavuniya, the average length of the day in August is 12h and 24min.
On the first day of August in Vavuniya, sunrise is at 05:59 and sunset at 18:29. On the last day of the month, sunrise is at 05:59 and sunset at 18:17 +0530.

Sunshine

In August, the average sunshine in Vavuniya is 8.5h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 7 in August translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.