July weather forecast
Petaling Jaya, Malaysia

In July, Petaling Jaya experiences an elevation in wind speed that reaches 5.2km/h (3.2mph), offering some respite in the humidity-laden air. While there's plenty of rain to keep the heavy heat under control, daytime remains partly sunny. With skies less overcast compared to previous months, the city feels warmer. The slight breeze along with rainfall creates a tranquil atmosphere across the city. In the upcoming month of August, weather conditions remain roughly the same, with minor tweaks in temperature and rainfall.

Temperature

An average high-temperature of a still hot 32.3°C (90.1°F) marks July, exhibiting a close resemblance to the conditions in June. Throughout the month of July, Petaling Jaya sees a steady low-temperature average of 23.8°C (74.8°F).

Heat index

July's heat index is calculated to be a blistering 43°C (109.4°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In July, the average relative humidity is 74%.

Rainfall

In Petaling Jaya, during July, the rain falls for 26.6 days and regularly aggregates up to 103mm (4.06") of precipitation. In Petaling Jaya, during the entire year, the rain falls for 309.8 days and collects up to 1481mm (58.31") of precipitation.

Daylight

The average length of the day in July is 12h and 17min.
On the first day of July in Petaling Jaya, sunrise is at 7:08 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:27 pm +08.

Sunshine

The average sunshine in July is 8.7h.

UV index

The months with the highest UV index are February through October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.