August weather forecast
Jayapura, Indonesia

August

Weather in August

The last month of the winter, August, is also a moderately hot month in Jayapura, Indonesia, with temperature in the range of an average low of 22.8°C (73°F) and an average high of 28.8°C (83.8°F).

Temperature

The onset of August notes an average high-temperature of a still warm 28.8°C (83.8°F), subtly shifted from July's 28.4°C (83.1°F). An average low-temperature of 22.8°C (73°F) is recorded in the month of August.

Heat index

The heat index value for August is estimated at a sweltering 35°C (95°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in August is 84%.

Rainfall

In Jayapura, during August, the rain falls for 27.8 days and regularly aggregates up to 239mm (9.41") of precipitation. Throughout the year, there are 327.5 rainfall days, and 2689mm (105.87") of precipitation is accumulated.

Sea temperature

The months with the coldest seawater are March and August, with an average sea temperature of 29.1°C (84.4°F).
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.

Daylight

The average length of the day in August in Jayapura is 12h and 2min.
On the first day of August, sunrise is at 05:43 and sunset at 17:43. On the last day of the month, sunrise is at 05:35 and sunset at 17:39 WIT.

Sunshine

The average sunshine in August is 8h.

UV index

January, February, June through August and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be alert! The reflection of water and sand augments UV radiation intensity.

Frequently asked questions

How hot does it get in August?
In August, in Jayapura, the average high-temperature is 28.8°C (83.8°F), and the average low-temperature is 22.8°C (73°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in August is estimated at 35°C (95°F).
What is the average humidity in August?
In Jayapura, the average relative humidity in August is 84%.
How much does it rain in August?
In Jayapura, in August, it is raining for 27.8 days, with typically 239mm (9.41") of accumulated precipitation.
What months are the sea coldest?
The months with the coldest seawater are March and August, with an average sea temperature of 29.1°C (84.4°F).
What is the sea water temperature in August?
In Jayapura, Indonesia, the average seawater temperature in August is 29.1°C (84.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.
How many hours of daylight does Jayapura have in August?
The average day length in August is 12h and 2min.
What time are sunrise and sunset in August?
In August, on the first day of the month, sunrise is at 05:43 and sunset at 17:43. On the last day of the month, sunrise is at 05:35 and sunset at 17:39 WIT.
How many hours of sunshine does Jayapura have in August?
In August, the average sunshine duration is 8h.
What are the months with the lowest UV index in Jayapura?
The months with the lowest UV index are January, February, June through August and December, with an average maximum UV index of 6.
What is the UV index intensity in August?
In Jayapura, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in August
Jayapura, Indonesia
  • Average high temperature in August: 28.8°C

The warmest months (with the highest average high temperature) are October and November (29.2°C).
The months with the lowest average high temperature are January and March (28.3°C).

  • Average low temperature in August: 22.8°C

The month with the highest average low temperature is December (23.8°C).
The coldest months (with the lowest average low temperature) are July and August (22.8°C).

Average pressure in August
Jayapura, Indonesia
  • Average pressure in August: 1009.9mbar

The months with the highest atmospheric pressure are August and September (1009.9mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

Average wind speed in August
Jayapura, Indonesia
  • Average wind speed in August: 7.2km/h

The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is May (6.7km/h).

Average humidity in August
Jayapura, Indonesia
  • Average humidity in August: 84%

The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are September, October and November (83%).

Average rainfall in August
Jayapura, Indonesia
  • Average rainfall in August: 239mm

The wettest month (with the highest rainfall) is December (261mm).
The driest month (with the least rainfall) is February (171mm).

Average rainfall days in August
Jayapura, Indonesia
  • Average rainfall days in August: 27.8 days

The months with the highest number of rainy days are May and October (28.5 days).
The month with the least rainy days is February (23.6 days).

Average sea temperature in August
Jayapura, Indonesia
  • Average sea temperature in August: 29.1°C

The best month for swimming (with the highest average sea temperature) is October (29.8°C).
The coldest months (with the lowest average sea temperature) are March and August (29.1°C).

Average daylight in August /
Average sunshine in August
Jayapura, Indonesia
  • Average daylight in August: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 12h and 0min).

  • Average sunshine in August: 8h and 0min

The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is March (Average sunshine: 6h and 48min).

Average sunshine days in August
Jayapura, Indonesia
  • Average sunshine days in August: 1.5 days

The month with the most sunshine days is February (3.6 days).
The month with the least sunshine days is May (1.4 days).

Average UV index in August
Jayapura, Indonesia
  • Average UV index in August: 6

The months with the highest UV index are March, April, May, September, October and November (UV index 7).
The months with the lowest UV index are January, February, June, July, August and December (UV index 6).

Average cloud cover in August
Jayapura, Indonesia
  • Average cloud cover in August: 44

The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are May, August and September (Cloud cover 44).

Average visibility in August
Jayapura, Indonesia
  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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