August weather forecast
Jakarta, Indonesia

In August, the city of Jakarta experiences incremental changes in its weather conditions from the previous month. This month sees the least amount of rainfall in the year, dropping to 35mm, which results in fewer rainy days. The temperatures remain stable, with only minor fluctuations observed, whereas the average sunshine hours increase owing to the low rain rate. Beachgoers continue to enjoy favourable sea conditions as the sea temperature persists at 29°C. August's weather, marked by abundant sunshine, makes it one of Jakarta's most enticing months for visitors.

Temperature

The transition into August is marked with an average high-temperature of a still hot 31.1°C, showing an insignificant shift from July's 30.6°C. August nights in Jakarta experience a consistent temperature drop to a moderately hot 24.7°C.

Heat index

For most parts of August, the heat index is estimated at a very hot 38°C. More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
One should consider that heat index numbers are for shaded settings and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Jakarta, Indonesia, the average relative humidity in August is 70%.

Rainfall

The month with the least rainfall is August, when the rain falls for 11.6 days and typically collects 35mm of precipitation.

Sea temperature

In Jakarta, the average seawater temperature in August is 29°C.
Note: For engaging in any water activities, temperatures from 25°C to 29°C are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

In August, the average length of the day in Jakarta is 11h and 55min.
On the first day of the month, sunrise is at 06:03 and sunset at 17:54. On the last day of August, in Jakarta, sunrise is at 05:53 and sunset at 17:52 WIB.

Sunshine

In August, the average sunshine in Jakarta is 8.5h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In August, a daily maximum UV index of 7 leads to the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Notice! Sand and water reflections contribute to a stronger UV exposure.