October weather forecast
Petaling Jaya, Malaysia

October, like September, is another hot autumn month in Petaling Jaya, Malaysia, with temperature in the range of an average low of 23.9°C (75°F) and an average high of 32.3°C (90.1°F).

Temperature

In October, Petaling Jaya experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 32.2°C (90°F) in September to a still hot 32.3°C (90.1°F). During the nights in October, Petaling Jaya observes an average low-temperature of 23.9°C (75°F).

Heat index

For most parts of October, the heat index is calculated to be a blistering 43°C (109.4°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Petaling Jaya, the average relative humidity in October is 75%.

Rainfall

In October, the rain falls for 26.7 days. Throughout October, 169mm (6.65") of precipitation is accumulated. Throughout the year, there are 309.8 rainfall days, and 1481mm (58.31") of precipitation is accumulated.

Daylight

In Petaling Jaya, the average length of the day in October is 12h and 3min.
On the first day of the month, sunrise is at 7:00 am and sunset at 7:05 pm. On the last day of October, sunrise is at 6:56 am and sunset at 6:57 pm +08.

Sunshine

In Petaling Jaya, Malaysia, the average sunshine in October is 8.1h.

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 estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in October interprets into the following advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.