July weather forecast
Jalthara, Sri Lanka

July, the same as June, is a moderately hot summer month in Jalthara, Sri Lanka, with an average temperature fluctuating between 25.3°C (77.5°F) and 28.9°C (84°F).

Temperature

Jalthara sees its lowest temperatures during July and August, with an average high-temperature of 28.9°C (84°F).

Heat index

During July, the heat index is estimated at a fiery hot 35°C (95°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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 highest humidity are June through August, with an average relative humidity of 83%.

Rainfall

In July, in Jalthara, the rain falls for 29.8 days. Throughout July, 256mm (10.08") of precipitation is accumulated. In Jalthara, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

Daylight

The average length of the day in July is 12h and 29min.
On the first day of July, sunrise is at 05:58 and sunset at 18:29. On the last day of the month, sunrise is at 06:03 and sunset at 18:28 +0530.

Sunshine

The average sunshine in July is 7.6h.

UV index

January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Jalthara. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in July translates into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.