July weather forecast
Polonnaruwa, Sri Lanka

July, like June, is a hot summer month in Polonnaruwa, Sri Lanka, with an average temperature ranging between min 24.5°C (76.1°F) and max 33.5°C (92.3°F).

Temperature

In July, the average high-temperature is essentially the same as in June - a still tropical 33.5°C (92.3°F). In Polonnaruwa, in July, the average low-temperature is 24.5°C (76.1°F).

Heat index

In July, the average heat index is computed to be a scorching 44°C (111.2°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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 are June through September, with an average relative humidity of 67%.

Rainfall

In Polonnaruwa, in July, during 10.3 rainfall days, 26mm (1.02") of precipitation is typically accumulated. Throughout the year, in Polonnaruwa, there are 196.8 rainfall days, and 943mm (37.13") of precipitation is accumulated.

Daylight

In Polonnaruwa, Sri Lanka, the average length of the day in July is 12h and 32min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:27. On the last day of July, sunrise is at 05:58 and sunset at 18:26 +0530.

Sunshine

In Polonnaruwa, the average sunshine in July is 11.2h.

UV index

February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 7 in July transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.