September weather forecast and climate
Carara, Costa Rica

Weather in September

The first month of the autumn, September, is also a moderately hot month in Carara, Costa Rica, with average temperature ranging between max 28.5°C (83.3°F) and min 25.3°C (77.5°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still warm 28.5°C (83.3°F). In Carara, Costa Rica,, the average low-temperature is 25.3°C (77.5°F).

Heat index

The average heat index in September is appraised at a tropical 33.2°C (91.8°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
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', 'real feel', 'apparent temperature', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, differences in body mass, height, and shape, clothing). 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. 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.

Humidity

The average relative humidity in Carara is 79%.

Rainfall

In Carara, during September, the rain falls for 23.6 days and regularly aggregates up to 131mm (5.16") of precipitation. In Carara, during the entire year, the rain falls for 236.2 days and collects up to 1501mm (59.09") of precipitation.

Daylight

In Carara, the average length of the day in September is 12.2h.

Sunshine

In September, the average sunshine in Carara is 8.9h.

UV index

Months with the highest UV index in Carara 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 Carara. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 interpret into the following advice:
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. 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 September in Carara?

The average high-temperature, in September, is 28.5°C (83.3°F), while the average low-temperature is 25.3°C (77.5°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 33.2°C (91.8°F).

What is the average humidity in September in Carara?

The average relative humidity in September in Carara is 79%.

How many days does it rain in September in Carara?

In Carara, in September, during 23.6 rainfall days, 131mm (5.16") of precipitation is typically accumulated.

How many hours of daylight does Carara have in September?

The average length of the day in September in Carara is 12.2h.

How long on average sun shines in September in Carara?

In September, the average sunshine in Carara is 8.9h.

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

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

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

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

What is the UV index intensity in September in Carara?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Carara, Costa Rica

Average temperature in September - Carara, Costa Rica
  • Average high temperature in September: 28.5°C

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is October (28.1°C).

  • Average low temperature in September: 25.3°C

Months with the highest average low temperature are April and May (26.2°C).
The coldest month (with the lowest average low temperature) is January (24.5°C).

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Average pressure in September
Carara, Costa Rica

Average pressure in September - Carara, Costa Rica
  • Average pressure in September: 1010.9mbar

The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).

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Average wind speed in September
Carara, Costa Rica

Average wind speed in September - Carara, Costa Rica
  • Average wind speed in September: 7.7km/h

The windiest month (with the highest average wind speed) is March (9.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).

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Average humidity in September
Carara, Costa Rica

Average humidity in September - Carara, Costa Rica
  • Average humidity in September: 79%

Months with the highest relative humidity are June and October (80%).
Months with the lowest relative humidity are February and March (68%).

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Average rainfall in September
Carara, Costa Rica

Average rainfall in September - Carara, Costa Rica
  • Average rainfall in September: 131mm

The wettest month (with the highest rainfall) is October (383mm).
The driest month (with the least rainfall) is February (11mm).

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Average rainfall days in September
Carara, Costa Rica

Average rainfall days in September - Carara, Costa Rica
  • Average rainfall days in September: 23.6 days

The month with the highest number of rainy days is October (26.1 days).
The month with the least rainy days is February (7.8 days).

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Average daylight in September /
Average sunshine in September
Carara, Costa Rica

Average daylight in September / Average sunshine in September - Carara, Costa Rica
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.7h).
Months with the shortest days are January and December (Average daylight: 11.6h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is October (Average sunshine: 8.1h).

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Average sunshine days in September
Carara, Costa Rica

Average sunshine days in September - Carara, Costa Rica
  • Average sunshine days in September: 5.9 days

The month with the most sunshine days is March (18.6 days).
The month with the least sunshine days is May (4.3 days).

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Average UV index in September
Carara, Costa Rica

Average UV index in September - Carara, Costa Rica
  • Average UV index in September: 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 September
Carara, Costa Rica

Average cloud cover in September - Carara, Costa Rica
  • Average cloud cover in September: 39

The month with the most cloud cover is October (Cloud cover 44).
The month with the least cloud cover is February (Cloud cover 13).

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Average visibility in September
Carara, Costa Rica

Average visibility in September - Carara, Costa Rica
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, June, July, August, September, November and December (10km).
Months with the lowest visibility are May and October (9km).

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