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 (1.85"). 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

Upon the beginning of July, Jakarta's high-temperatures register at a still tropical 30.6°C (87.1°F), closely mirroring the preceding month. Jakarta's nighttime temperature in July drops to an average of 24.8°C (76.6°F).

Heat index

For most parts of July, the heat index is calculated to be a torrid 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant 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 human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in July is 72%.

Rainfall

In July, in Jakarta, the rain falls for 16.8 days. Throughout July, 47mm (1.85") of precipitation is accumulated. In Jakarta, during the entire year, the rain falls for 252 days and collects up to 1150mm (45.28") of precipitation.

Sea temperature

In July, the average sea temperature is 29°C (84.2°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

In July, the average length of the day in Jakarta 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 in Jakarta.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Jakarta, Indonesia. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Jakarta, Indonesia. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 7 in July translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Caution! The Sun's UV rays become stronger due to reflections from water and sand.