August weather forecast and climate
Cartagena, Costa Rica

Weather in August

August, the last month of the summer, in Cartagena, is also a hot month, with temperature in the range of an average low of 24.4°C (75.9°F) and an average high of 30.2°C (86.4°F).

Temperature

In Cartagena, Costa Rica, the average high-temperature is practically the same as in July - a still hot 30.2°C (86.4°F). In August, in Cartagena, Costa Rica, the average low-temperature is 24.4°C (75.9°F).

Heat index

The average heat index is calculated to be a very hot 38.6°C (101.5°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 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 'apparent temperature', 'feels like', 'real feel', 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 (pregnancy, clothing, differences in body mass, height, and shape), 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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

In Cartagena, the average relative humidity is 81%.

Rainfall

In Cartagena, during August, the rain falls for 16.9 days and regularly aggregates up to 87mm (3.43") of precipitation. In Cartagena, during the entire year, the rain falls for 137.5 days and collects up to 624mm (24.57") of precipitation.

Daylight

In August, the average length of the day is 12.4h.

Sunshine

In August, the average sunshine is 9.8h.

UV index

Months with the highest UV index in Cartagena are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Cartagena. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in August transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Cartagena?

In Cartagena, Costa Rica, in August, the average high-temperature is 30.2°C (86.4°F), and the average low-temperature is 24.4°C (75.9°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 38.6°C (101.5°F).

What is the average humidity in August in Cartagena?

The average relative humidity in August in Cartagena, Costa Rica, is 81%.

How many days does it rain in August in Cartagena?

In Cartagena, Costa Rica, in August, during 16.9 rainfall days, 87mm (3.43") of precipitation is typically accumulated.

What is the average length of the day in August in Cartagena?

The average length of the day in August is 12.4h.

How long on average sun shines in August in Cartagena?

In Cartagena, Costa Rica, the average sunshine in August is 9.8h.

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

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

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

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

What is the UV index intensity in August in Cartagena?

In Cartagena, the average daily maximum UV index in August is 7. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in August
Cartagena, Costa Rica

Average temperature in August - Cartagena, Costa Rica
  • Average high temperature in August: 30.2°C

The warmest month (with the highest average high temperature) is April (33.4°C).
The month with the lowest average high temperature is October (28.7°C).

  • Average low temperature in August: 24.4°C

The month with the highest average low temperature is May (25.8°C).
The coldest month (with the lowest average low temperature) is January (23°C).

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Average pressure in August
Cartagena, Costa Rica

Average pressure in August - Cartagena, Costa Rica
  • Average pressure in August: 1010.5mbar

The month with the highest atmospheric pressure is January (1011.1mbar).
The month with the lowest atmospheric pressure is October (1010.1mbar).

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Average wind speed in August
Cartagena, Costa Rica

Average wind speed in August - Cartagena, Costa Rica
  • Average wind speed in August: 9.7km/h

The windiest month (with the highest average wind speed) is February (21.9km/h).
The calmest month (with the lowest average wind speed) is September (7.9km/h).

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Average humidity in August
Cartagena, Costa Rica

Average humidity in August - Cartagena, Costa Rica
  • Average humidity in August: 81%

The month with the highest relative humidity is October (84%).
Months with the lowest relative humidity are March and April (65%).

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Average rainfall in August
Cartagena, Costa Rica

Average rainfall in August - Cartagena, Costa Rica
  • Average rainfall in August: 87mm

The wettest month (with the highest rainfall) is October (177mm).
The driest months (with the least rainfall) are February and March (1mm).

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Average rainfall days in August
Cartagena, Costa Rica

Average rainfall days in August - Cartagena, Costa Rica
  • Average rainfall days in August: 16.9 days

The month with the highest number of rainy days is October (22.5 days).
The month with the least rainy days is February (0.8 days).

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Average daylight in August /
Average sunshine in August
Cartagena, Costa Rica

Average daylight in August / Average sunshine in August - Cartagena, Costa Rica
  • Average daylight in August: 12.4h

Months with the longest days are June and July (Average daylight: 12.7h).
The month with the shortest days is December (Average daylight: 11.5h).

  • Average sunshine in August: 9.8h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 7.6h).

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Average sunshine days in August
Cartagena, Costa Rica

Average sunshine days in August - Cartagena, Costa Rica
  • Average sunshine days in August: 13.2 days

The month with the most sunshine days is March (30.1 days).
The month with the least sunshine days is October (7 days).

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Average UV index in August
Cartagena, Costa Rica

Average UV index in August - Cartagena, Costa Rica
  • Average UV index in August: 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 August
Cartagena, Costa Rica

Average cloud cover in August - Cartagena, Costa Rica
  • Average cloud cover in August: 36

The month with the most cloud cover is October (Cloud cover 43).
The month with the least cloud cover is February (Cloud cover 9).

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Average visibility in August
Cartagena, Costa Rica

Average visibility in August - Cartagena, Costa Rica
  • Average visibility in August: 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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