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

Weather in May

The last month of the autumn, May, is another tropical month in Jakarta, Indonesia, with average temperature ranging between min 26.1°C (79°F) and max 31.2°C (88.2°F).

Temperature

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

Heat index

In May, the average heat index is calculated to be a sweltering 38.8°C (101.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, differences in body mass, height, and shape, wind), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In May, the average relative humidity is 72%.

Rainfall

In Jakarta, it is raining for 22.5 days, with typically 98mm (3.86") of accumulated precipitation. 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 in Jakarta, Indonesia.
Note: The surface water temperatures above 30°C (86°F) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

Daylight

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

Sunshine

The average sunshine in May is 9.3h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Jakarta. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Jakarta. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for average individuals.
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. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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.
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FAQ

What is the temperature in May in Jakarta?

The average high-temperature, in May, in Jakarta, is 31.2°C (88.2°F), while the average low-temperature is 26.1°C (79°F). In May, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is calculated to be 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 many days does it rain in May in Jakarta?

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

What months are 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 temperature in May in Jakarta?

In Jakarta, in May, the average water temperature is 30°C (86°F). The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

What is the month with the shortest days in Jakarta?

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

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 May, the average sunshine in Jakarta is 9.3h.

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

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

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

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

What is the UV index intensity in May in Jakarta?

In Jakarta, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Jakarta, Indonesia

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).

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Average pressure in May
Jakarta, Indonesia

Average pressure in May - Jakarta, Indonesia
  • Average pressure in May: 1009.7mbar

The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

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Average wind speed in May
Jakarta, Indonesia

Average wind speed in May - Jakarta, Indonesia
  • Average wind speed in May: 8.5km/h

The windiest month (with the highest average wind speed) is January (12.4km/h).
The calmest month (with the lowest average wind speed) is November (8.1km/h).

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Average humidity in May
Jakarta, Indonesia

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%).

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Average rainfall in May
Jakarta, Indonesia

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).

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Average rainfall days in May
Jakarta, Indonesia

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).

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Average sea temperature in May
Jakarta, Indonesia

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).

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Average daylight in May /
Average sunshine in May
Jakarta, Indonesia

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).

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Average sunshine days in May
Jakarta, Indonesia

Average sunshine days in May - Jakarta, Indonesia
  • Average sunshine days in May: 6.7 days

The month with the most sunshine days is August (16 days).
The month with the least sunshine days is February (2.6 days).

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Average UV index in May
Jakarta, Indonesia

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).

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Average cloud cover in May
Jakarta, Indonesia

Average cloud cover in May - Jakarta, Indonesia
  • Average cloud cover in May: 29

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in May
Jakarta, Indonesia

Average visibility in May - Jakarta, Indonesia
  • Average visibility in May: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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