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

In July, the average high-temperature registers at a still warm 28.7°C (83.7°F), nearly identical to June's 29.2°C (84.6°F). July nights reflect a consistent temperature dip to a still moderately hot 25.6°C (78.1°F), a slight descent from daytime peaks.

Heat index

The heat index for July is estimated at a very hot 35°C (95°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

June through August, with an average relative humidity of 83%, are the most humid months in Kalutara.

Rainfall

In Kalutara, in July, during 29.5 rainfall days, 260mm (10.24") of precipitation is typically accumulated. Throughout the year, in Kalutara, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Sea temperature

In Kalutara, Sri Lanka, the average seawater temperature in July is 27.3°C (81.1°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

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

Sunshine

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

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 7 during July translates into the following guidance:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.