Jakarta
Indonesia
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Jakarta, Indonesia

The cityscape of Jakarta, Indonesia, under a dramatic evening skyline
The cityscape of Jakarta, Indonesia, under a dramatic evening skyline
The last month of the autumn, May, is another tropical month in Jakarta, Indonesia, with average temperature fluctuating between 31.2°C (88.2°F) and 26.1°C (79°F).

Temperature

In May, the average high-temperature is practically the same as in April - a still hot 31.2°C (88.2°F). The average low-temperature, in May, is 26.1°C (79°F).

Heat index

The average heat index is estimated at a very hot 38.8°C (101.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, pregnancy, clothing), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in May is 72%.

Rainfall

In May, the rain falls for 22.5 days. Throughout May, 98mm (3.86") of precipitation is accumulated. Throughout the year, in Jakarta, there are 252 rainfall days, and 1150mm (45.28") of precipitation is accumulated.

Sea temperature

April and May, with an average sea temperature of 30°C (86°F), are months with the warmest seawater.
Note: For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

Daylight

Months with the shortest days in Jakarta are May through July, with an average of 11.8h of daylight.

Sunshine

In May, the average sunshine in Jakarta, Indonesia, is 9.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. Months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Jakarta?

In May, in Jakarta, the average high-temperature is 31.2°C (88.2°F), and the average low-temperature is 26.1°C (79°F). In May, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines both air temperature and relative humidity, is appraised at 38.8°C (101.8°F).

What is the average humidity in May in Jakarta?

The average relative humidity in May in Jakarta is 72%.

How much does it rain in Jakarta in May?

In Jakarta, Indonesia, during May, the rain falls for 22.5 days and regularly aggregates up to 98mm (3.86") of precipitation.

When is the sea warmest in Jakarta?

April and May, with an average sea temperature of 30°C (86°F), are months with the warmest seawater.

What is the sea water temperature in May in Jakarta?

In May, the average sea temperature in Jakarta is 30°C (86°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

What is the month with the shortest days in Jakarta?

May through July, with an average of 11.8h of daylight, are months with the shortest days.

How many hours of daylight does Jakarta have in May?

In May, the average length of the day in Jakarta, Indonesia, is 11.8h.

How long on average sun shines in May in Jakarta?

In Jakarta, Indonesia, the average sunshine in May is 9.3h.

What is the month with the highest UV index in Jakarta?

January through December, with an average maximum UV index of 7, are months with the highest UV index.

What are the months with the lowest UV index in Jakarta?

Months with the lowest UV index in Jakarta, Indonesia, are January through December, with an average maximum UV index of 7.

How high is the UV index in May in Jakarta?

In May, the average daily maximum UV index in Jakarta is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in May - Jakarta, Indonesia
  • Average high temperature in May: 31.2°C

The warmest month (with the highest average high temperature) is October (31.8°C).
Months with the lowest average high temperature are January and February (29.8°C).

  • Average low temperature in May: 26.1°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.7°C).

Average humidity in May - Jakarta, Indonesia
  • Average humidity in May: 72%

The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is October (67%).

Average rainfall in May - Jakarta, Indonesia
  • Average rainfall in May: 98mm

The wettest month (with the highest rainfall) is March (144mm).
The driest month (with the least rainfall) is August (35mm).

Average rainfall days in May - Jakarta, Indonesia
  • Average rainfall days in May: 22.5 days

The month with the highest number of rainy days is March (26.1 days).
The month with the least rainy days is August (11.6 days).

Average sea temperature in May - Jakarta, Indonesia
  • Average sea temperature in May: 30°C

The best months for swimming (with the highest average sea temperature) are April and May (30°C).
The coldest months (with the lowest average sea temperature) are January and February (28°C).

Average daylight in May / Average sunshine in May - Jakarta, Indonesia
  • Average daylight in May: 11.8h

The month with the longest days is December (Average daylight: 12.5h).
Months with the shortest days are May, June and July (Average daylight: 11.8h).

  • Average sunshine in May: 9.3h

The month with the most sunshine is March (Average sunshine: 10.2h).
The month with the least sunshine is July (Average sunshine: 7.3h).

Average UV index in May - Jakarta, Indonesia
  • Average UV index in May: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).