September weather forecast and climate
Jabilla Abajo, Costa Rica

Weather in September

The first month of the autumn, September, is still a warm month in Jabilla Abajo, Costa Rica, with temperature in the range of an average low of 22.8°C (73°F) and an average high of 29.7°C (85.5°F).

Temperature

In Jabilla Abajo, the average high-temperature is essentially the same as in August - a moderately hot 29.7°C (85.5°F). The average low-temperature, in Jabilla Abajo, is 22.8°C (73°F).

Heat index

The average heat index is evaluated at a sweltering 38.4°C (101.1°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like pregnancy, differences in body mass, height, and shape, wind, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. 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 September, the average relative humidity is 86%.

Rainfall

In Jabilla Abajo, it is raining for 29 days, with typically 261mm (10.28") of accumulated precipitation. In Jabilla Abajo, during the entire year, the rain falls for 236.6 days and collects up to 1996mm (78.58") of precipitation.

Daylight

In Jabilla Abajo, Costa Rica, the average length of the day is 12.2h.

Sunshine

The average sunshine in September is 7.8h.

UV index

Months with the highest UV index in Jabilla Abajo are January through September and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 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. 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 Jabilla Abajo?

The average high-temperature, in September, in Jabilla Abajo, is 29.7°C (85.5°F), while the average low-temperature is 22.8°C (73°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines relative humidity and air temperature, in September is appraised at 38.4°C (101.1°F).

What is the average humidity in September in Jabilla Abajo?

In September, the average relative humidity is 86%.

How many days does it rain in September in Jabilla Abajo?

In Jabilla Abajo, Costa Rica, in September, during 29 rainfall days, 261mm (10.28") of precipitation is typically accumulated.

What is the average length of the day in September in Jabilla Abajo?

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

How long on average sun shines in September in Jabilla Abajo?

The average sunshine in September is 7.8h.

When is the highest UV index in Jabilla Abajo?

January through September and December, with an average maximum UV index of 7, are months with the highest UV index in Jabilla Abajo.

What is the UV index reading in September in Jabilla Abajo?

The average daily maximum UV index in September in Jabilla Abajo, Costa Rica, is 7. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.

Average temperature in September
Jabilla Abajo, Costa Rica

Average temperature in September - Jabilla Abajo, Costa Rica
  • Average high temperature in September: 29.7°C

The warmest month (with the highest average high temperature) is April (34.4°C).
The month with the lowest average high temperature is October (28.7°C).

  • Average low temperature in September: 22.8°C

The month with the highest average low temperature is May (24.4°C).
The coldest month (with the lowest average low temperature) is January (21°C).

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Average pressure in September
Jabilla Abajo, Costa Rica

Average pressure in September - Jabilla Abajo, Costa Rica
  • Average pressure in September: 1010.4mbar

The month with the highest atmospheric pressure is January (1011mbar).
Months with the lowest atmospheric pressure are May, October and November (1010.2mbar).

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Average wind speed in September
Jabilla Abajo, Costa Rica

Average wind speed in September - Jabilla Abajo, Costa Rica
  • Average wind speed in September: 5.3km/h

The windiest month (with the highest average wind speed) is February (15km/h).
The calmest month (with the lowest average wind speed) is September (5.3km/h).

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Average humidity in September
Jabilla Abajo, Costa Rica

Average humidity in September - Jabilla Abajo, Costa Rica
  • Average humidity in September: 86%

The month with the highest relative humidity is October (88%).
The month with the lowest relative humidity is March (61%).

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Average rainfall in September
Jabilla Abajo, Costa Rica

Average rainfall in September - Jabilla Abajo, Costa Rica
  • Average rainfall in September: 261mm

The wettest month (with the highest rainfall) is October (427mm).
The driest months (with the least rainfall) are February and March (5mm).

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Average rainfall days in September
Jabilla Abajo, Costa Rica

Average rainfall days in September - Jabilla Abajo, Costa Rica
  • Average rainfall days in September: 29 days

The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (3.5 days).

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Average daylight in September /
Average sunshine in September
Jabilla Abajo, Costa Rica

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

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 September: 7.8h

The month with the most sunshine is March (Average sunshine: 9.9h).
The month with the least sunshine is October (Average sunshine: 6.9h).

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Average sunshine days in September
Jabilla Abajo, Costa Rica

Average sunshine days in September - Jabilla Abajo, Costa Rica
  • Average sunshine days in September: 0.6 days

The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is October (0.5 days).

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Average UV index in September
Jabilla Abajo, Costa Rica

Average UV index in September - Jabilla Abajo, Costa Rica
  • Average UV index in September: 7

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

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Average cloud cover in September
Jabilla Abajo, Costa Rica

Average cloud cover in September - Jabilla Abajo, Costa Rica
  • Average cloud cover in September: 48

The month with the most cloud cover is October (Cloud cover 52).
The month with the least cloud cover is February (Cloud cover 11).

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Average visibility in September
Jabilla Abajo, Costa Rica

Average visibility in September - Jabilla Abajo, Costa Rica
  • Average visibility in September: 8km

Months with the highest visibility are January, February, March and April (10km).
The month with the lowest visibility is October (7km).

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