July weather forecast
Gampaha, Sri Lanka

As July picks up in Gampaha, there's a minor reduction in rainfall to 177mm (6.97"), but the weather remains dominated by the monsoon season. The drop in rainfall comes with a reduction in temperature, introducing a slight chill in the air. The reduction in sunshine hours due to increased cloud coverage implies less heat. Winds maintaining strength at this time provide a refreshing break to the inhabitants and tourists alike. Although the city is often covered in a rainy mist, the weather remains amicable, ideal for indoor activities and short trips.

Temperature

The month of July, characterized by an average high of 29.2°C (84.6°F) and a low of 25.5°C (77.9°F), is recognized as the coldest.

Heat index

In July, the average heat index is appraised at a very hot 36°C (96.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The months with the highest humidity in Gampaha are June through August, with an average relative humidity of 82%.

Rainfall

In Gampaha, during July, the rain falls for 27.7 days and regularly aggregates up to 177mm (6.97") of precipitation. In Gampaha, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

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

Sunshine

In Gampaha, the average sunshine in July is 8h.

UV index

The months with the highest UV index in Gampaha are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in July translates into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.