July weather forecast
Jakarta, Indonesia

Jakarta's weather in July aligns with June's dry and sunny conditions, with a slight decrease in humidity. The conditions are characterised by one of the year's lowest average monthly rainfall measurements of 47mm. The UV index stays at 7, while the average pressure value goes somewhat higher resulting in 1010.6mb. This month's weather is ideal for outdoor explorations, city tours, and beach visits, as July has the highest number of sunshine days in the year. Despite the decrease in sea temperature, the waters remain inviting for sea-related activities.

Temperature

July's onset in Jakarta brings an average high-temperature of a still hot 30.6°C, showing a minute difference from June's 30.8°C. Jakarta's nights in July cool down to an average low-temperature of 24.8°C.

Heat index

July's heat index is estimated at a torrid 37°C. Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Jakarta, the average relative humidity in July is 72%.

Rainfall

In Jakarta, in July, it is raining for 16.8 days, with typically 47mm of accumulated precipitation. Throughout the year, in Jakarta, there are 252 rainfall days, and 1150mm of precipitation is accumulated.

Sea temperature

In Jakarta, the average seawater temperature in July is 29°C.
Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C to 29°C are seen as very agreeable and pleasurable for lengthy periods without discomfort.

Daylight

In Jakarta, the average length of the day in July is 11h and 48min.
On the first day of July, sunrise is at 06:03 and sunset at 17:49. On the last day of the month, sunrise is at 06:03 and sunset at 17:54 WIB.

Sunshine

With an average of 7.3h of sunshine, July has the least sunshine of the year.

UV index

The months with the highest UV index in Jakarta are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 7 during July translates into the following directions:
Deflect overexposure. Sun protection is a necessity. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! The Sun's UV rays are heightened by the reflection of sand and water.