February weather forecast
Jakarta, Indonesia

February's weather in Jakarta continues in the same vein as January, with comparably high temperatures, although the average wind speed drops slightly to 10km/h (6.2mph). This month still receives a significant amount of rainfall, with high humidity levels persisting. The UV index remains at 7, meaning sun protection is essential for outdoor activities. Despite the somewhat gloomy weather conditions, the average sea temperature still holds steady at 28°C (82.4°F). Towards the end of February, the weather starts to transition slowly to the less rainy season, which is first noticeable in a slight decrease in the number of rainy days.

Temperature

January and February, with an average high-temperature of 29.8°C (85.6°F), are marked as the coldest months.

Heat index

The heat index in February is calculated to be a very hot 36°C (96.8°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. 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.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

With an average relative humidity of 76%, February is the most humid month in Jakarta.

Rainfall

In Jakarta, during February, the rain falls for 24.7 days and regularly aggregates up to 137mm (5.39") of precipitation. In Jakarta, during the entire year, the rain falls for 252 days and collects up to 1150mm (45.28") of precipitation.

Sea temperature

The months with the coldest seawater are January and February, with an average sea temperature of 28°C (82.4°F).
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

The average length of the day in February is 12h and 19min.
On the first day of February, sunrise is at 05:54 and sunset at 18:17. On the last day of the month, sunrise is at 05:58 and sunset at 18:11 WIB.

Sunshine

The average sunshine in February in Jakarta is 9.9h.

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 in Jakarta are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in February interprets into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.