July weather forecast
Vannivilankulam, Sri Lanka

July, like June, in Vannivilankulam, Sri Lanka, is a moderately hot summer month, with an average temperature varying between 27.3°C (81.1°F) and 29.8°C (85.6°F).

Temperature

Vannivilankulam registers an average high-temperature of a warm 29.8°C (85.6°F) with the arrival of July, showing minor deviation from the preceding month. Throughout July, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 27.3°C (81.1°F).

Heat index

The heat index in July is estimated at a very hot 36°C (96.8°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In July, the average relative humidity is 76%.

Rainfall

In July, in Vannivilankulam, the rain falls for 12.8 days. Throughout July, 32mm (1.26") of precipitation is accumulated. In Vannivilankulam, during the entire year, the rain falls for 181.2 days and collects up to 849mm (33.43") of precipitation.

Daylight

In Vannivilankulam, the average length of the day in July is 12h and 36min.
On the first day of July, sunrise is at 05:52 and sunset at 18:31. On the last day of the month, sunrise is at 05:59 and sunset at 18:30 +0530.

Sunshine

In July, the average sunshine is 10.6h.

UV index

The months with the highest UV index are January through October and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 7 in July leads to these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.