July weather forecast
Kalutara, Sri Lanka

Julys' weather in Kalutara calms down a bit from June's monsoon peak with reduction in heavy rainfall and more sunshine hours. Temperatures, however, remain consistent with the maximum temperature reaching 28.7°C (83.7°F). The climatic changes experienced in July pave the way for a decent sunny yet tropical weather, making it a favorable period for visitors. Notably, the seas maintain a warm temperature that particularly favors marine activities.

Temperature

July commences in Kalutara with an average high-temperature of a still warm 28.7°C (83.7°F), showing little deviation from June's 29.2°C (84.6°F). A modest dip in temperatures to an average of 25.6°C (78.1°F) is observed throughout Kalutara's July nights.

Heat index

During July, the heat index is evaluated at a torrid 35°C (95°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The months with the highest humidity are June through August, with an average relative humidity of 83%.

Rainfall

In Kalutara, during July, the rain falls for 29.5 days and regularly aggregates up to 260mm (10.24") of precipitation. In Kalutara, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Sea temperature

In Kalutara, in July, the average water temperature is 27.3°C (81.1°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in July is 12h and 28min.
On the first day of July, sunrise is at 05:59 and sunset at 18:29. On the last day of the month, sunrise is at 06:04 and sunset at 18:28 +0530.

Sunshine

In Kalutara, the average sunshine in July is 7.8h.

UV index

The months with the highest UV index in Kalutara are January through April, July, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Alert! The Sun's UV rays are heightened by the reflection of sand and water.