Díli
East Timor
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Díli, East Timor

A scenic view of the mountainous shores in Díli, East Timor, on a calm, sunny day
A scenic view of the mountainous shores in Díli, East Timor, on a calm, sunny day
The first month of the summer, December, is still a hot month in Díli, East Timor, with average temperature varying between 23.6°C (74.5°F) and 31.1°C (88°F).

Temperature

In December, the average high-temperature is almost the same as in November - a still hot 31.1°C (88°F). In December, in Díli, the average low-temperature is 23.6°C (74.5°F).

Heat index

In December, the average heat index is appraised at a scorching 40.2°C (104.4°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. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels.

Humidity

In Díli, the average relative humidity in December is 77%.

Rainfall

The month with the most rainfall in Díli is December when the rain falls for 11 days and typically aggregates up to 144.9mm (5.7") of precipitation.

Sea temperature

The month with the warmest seawater is December, with an average sea temperature of 30.6°C (87.1°F).
Note: 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.

Daylight

January and December, with an average of 12.6h of daylight, are months with the longest days in Díli.

Sunshine

In Díli, East Timor, the average sunshine is 7.1h.

UV index

January through April, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 12 in December interpret into the following advice:
Take all necessary precautions, as unprotected skin can burn in minutes. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Díli?

The average high-temperature, in December, in Díli, East Timor, is 31.1°C (88°F), while the average low-temperature is 23.6°C (74.5°F).

What is the average humidity in December in Díli?

In December, the average relative humidity is 77%.

How many days does it rain in December in Díli?

In Díli, East Timor, during December, the rain falls for 11 days and regularly aggregates up to 144.9mm (5.7") of precipitation.

What is the wettest month in Díli?

December is the month with the most rainfall. Rain falls for 11 days and accumulates 144.9mm (5.7") of precipitation.

What month is the sea warmest in Díli?

The month with the warmest seawater is December, with an average sea temperature of 30.6°C (87.1°F).

What is the sea water temperature in December in Díli?

In December, the average sea temperature in Díli is 30.6°C (87.1°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

When are the longest days in Díli?

Months with the longest days in Díli are January and December, with an average of 12.6h of daylight.

What is the average length of the day in December in Díli?

The average length of the day in December in Díli, East Timor, is 12.6h.

How long on average sun shines in December in Díli?

The average sunshine in December in Díli is 7.1h.

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

Months with the highest UV index are January through April, August through December, with an average maximum UV index of 12.

What is the UV index reading in December in Díli?

In December, the average daily maximum UV index in Díli is 12. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Díli, East Timor
  • Average high temperature in December: 31.1°C

The warmest month (with the highest average high temperature) is April (31.5°C).
The month with the lowest average high temperature is August (30.1°C).

  • Average low temperature in December: 23.6°C

Months with the highest average low temperature are January and February (24.1°C).
The coldest month (with the lowest average low temperature) is August (20.1°C).

Average humidity in December - Díli, East Timor
  • Average humidity in December: 77%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (70%).

Average rainfall in December - Díli, East Timor
  • Average rainfall in December: 144.9mm

The wettest month (with the highest rainfall) is December (144.9mm).
The driest month (with the lowest rainfall) is September (9mm).

Average rainfall days in December - Díli, East Timor
  • Average rainfall days in December: 11 days

Months with the highest number of rainy days are January and February (13 days).
Months with the lowest number of rainy days are August and September (1 days).

Average sea temperature in December - Díli, East Timor
  • Average sea temperature in December: 30.6°C

The best month for swimming (with the highest average sea temperature) is December (30.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

Average daylight in December / Average sunshine in December - Díli, East Timor
  • Average daylight in December: 12.6h

Months with the longest days are January and December (Average daylight: 12.6h).
The month with shortest days is June (Average daylight: 11.6h).

  • Average sunshine in December: 7.1h

Months with most sunshine are September and October (Average sunshine: 9.6h).
The month with least sunshine is February (Average sunshine: 5.8h).

Average UV index in December - Díli, East Timor
  • Average UV index in December: 12

Months with the highest UV index are January, February, March, April, August, September, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 10).