September weather forecast and climate
África, Costa Rica

Weather in September

The first month of the autumn, September, is a tropical month in África, Costa Rica, with temperature in the range of an average high of 30.6°C (87.1°F) and an average low of 24.3°C (75.7°F).

Temperature

The warmest month is September, with an average high-temperature of 30.6°C (87.1°F) and an average low-temperature of 24.3°C (75.7°F).

Heat index

The average heat index is estimated at a very hot 38.3°C (100.9°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 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, metabolic differences, clothing), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

Months with the lowest humidity are April and September, with an average relative humidity of 76%.

Rainfall

September is the month with the least rainfall. Rain falls for 15.4 days and accumulates 59mm (2.32") of precipitation.

Daylight

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

Sunshine

The month with the most sunshine is September, with an average of 9h of sunshine.

UV index

Months with the highest UV index are March through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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 warmest month in África?

With an average high-temperature of 30.6°C (87.1°F) and an average low-temperature of 24.3°C (75.7°F), September is the warmest month in África.

What is the temperature in September in África?

In September, the average high-temperature is 30.6°C (87.1°F), and the average low-temperature is 24.3°C (75.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, in September is appraised at 38.3°C (100.9°F).

What is the least humid month in África?

April and September, with an average relative humidity of 76%, are the least humid months in África, Costa Rica.

What is the average humidity in September in África?

In September, the average relative humidity in África, Costa Rica, is 76%.

How much does it rain in África in September?

In September, in África, the rain falls for 15.4 days. Throughout September, 59mm (2.32") of precipitation is accumulated.

What is the driest month in África?

The month with the least rainfall in África, Costa Rica, is September when the rain falls for 15.4 days and typically collects 59mm (2.32") of precipitation.

How many hours of daylight does África have in September?

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

What month has the most sunshine in África?

With an average of 9h of sunshine, September has the most sunshine of the year in África, Costa Rica.

How long on average sun shines in September in África?

In September, the average sunshine is 9h.

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

Months with the highest UV index in África, Costa Rica, are March through October, with an average maximum UV index of 7.

What is the UV index intensity in September in África?

In África, Costa Rica, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
África, Costa Rica

Average temperature in September - África, Costa Rica
  • Average high temperature in September: 30.6°C

The warmest month (with the highest average high temperature) is September (30.6°C).
The month with the lowest average high temperature is January (27.4°C).

  • Average low temperature in September: 24.3°C

The month with the highest average low temperature is June (24.7°C).
The coldest month (with the lowest average low temperature) is January (22.3°C).

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Average pressure in September
África, Costa Rica

Average pressure in September - África, Costa Rica
  • Average pressure in September: 1011.1mbar

The month with the highest atmospheric pressure is January (1013.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).

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Average wind speed in September
África, Costa Rica

Average wind speed in September - África, Costa Rica
  • Average wind speed in September: 6.8km/h

The windiest months (with the highest average wind speed) are February and March (8.9km/h).
The calmest months (with the lowest average wind speed) are August and September (6.8km/h).

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Average humidity in September
África, Costa Rica

Average humidity in September - África, Costa Rica
  • Average humidity in September: 76%

The month with the highest relative humidity is November (80%).
Months with the lowest relative humidity are April and September (76%).

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Average rainfall in September
África, Costa Rica

Average rainfall in September - África, Costa Rica
  • Average rainfall in September: 59mm

The wettest month (with the highest rainfall) is December (214mm).
The driest month (with the least rainfall) is September (59mm).

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Average rainfall days in September
África, Costa Rica

Average rainfall days in September - África, Costa Rica
  • Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is July (23.5 days).
The month with the least rainy days is September (15.4 days).

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

Average daylight in September / Average sunshine in September - África, 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: 9h

The month with the most sunshine is September (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 6.3h).

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Average sunshine days in September
África, Costa Rica

Average sunshine days in September - África, Costa Rica
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is July (7 days).

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Average UV index in September
África, Costa Rica

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

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

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Average cloud cover in September
África, Costa Rica

Average cloud cover in September - África, Costa Rica
  • Average cloud cover in September: 34

The month with the most cloud cover is December (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).

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Average visibility in September
África, Costa Rica

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

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

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