September weather forecast and climate
Labrador, Costa Rica

Weather in September

The first month of the autumn, September, is also a moderately hot month in Labrador, Costa Rica, with average temperature ranging between min 23.2°C (73.8°F) and max 28.9°C (84°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 28.9°C (84°F). In September, in Labrador, the average low-temperature is 23.2°C (73.8°F).

Heat index

The average heat index is calculated to a hot 34.9°C (94.8°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', 'felt air temperature', 'apparent temperature', or 'real feel', 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 (pregnancy, clothing, wind), 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 especially crucial for babies and toddlers. 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.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In Labrador, during 27.7 rainfall days, 193mm (7.6") of precipitation is typically accumulated. In Labrador, during the entire year, the rain falls for 218.6 days and collects up to 1456mm (57.32") of precipitation.

Daylight

In September, the average length of the day in Labrador, Costa Rica, is 12.2h.

Sunshine

In Labrador, the average sunshine in September is 8.7h.

UV index

Months with the highest UV index in Labrador, Costa Rica, are January through September and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Labrador?

The average high-temperature, in September, in Labrador, is 28.9°C (84°F), while the average low-temperature is 23.2°C (73.8°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines relative humidity and air temperature, is calculated to 34.9°C (94.8°F).

What is the average humidity in September in Labrador?

In September, the average relative humidity is 82%.

How much does it rain in Labrador in September?

In Labrador, in September, it is raining for 27.7 days, with typically 193mm (7.6") of accumulated precipitation.

What is the average length of the day in September in Labrador?

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

How many hours of sunshine does Labrador have in September?

In September, the average sunshine in Labrador, Costa Rica, is 8.7h.

When is the highest UV index in Labrador?

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

What is the UV index reading in September in Labrador?

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

Average temperature in September
Labrador, Costa Rica

Average temperature in September - Labrador, Costa Rica
  • Average high temperature in September: 28.9°C

The warmest month (with the highest average high temperature) is March (32.8°C).
The month with the lowest average high temperature is October (28.4°C).

  • Average low temperature in September: 23.2°C

The month with the highest average low temperature is May (24.6°C).
The coldest month (with the lowest average low temperature) is January (21.9°C).

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Average pressure in September
Labrador, Costa Rica

Average pressure in September - Labrador, Costa Rica
  • Average pressure in September: 1010.8mbar

The month with the highest atmospheric pressure is January (1011.5mbar).
The month with the lowest atmospheric pressure is October (1010.5mbar).

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Average wind speed in September
Labrador, Costa Rica

Average wind speed in September - Labrador, Costa Rica
  • Average wind speed in September: 5.5km/h

The windiest month (with the highest average wind speed) is February (11.1km/h).
The calmest month (with the lowest average wind speed) is September (5.5km/h).

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Average humidity in September
Labrador, Costa Rica

Average humidity in September - Labrador, Costa Rica
  • Average humidity in September: 82%

The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is March (63%).

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Average rainfall in September
Labrador, Costa Rica

Average rainfall in September - Labrador, Costa Rica
  • Average rainfall in September: 193mm

The wettest month (with the highest rainfall) is October (330mm).
The driest month (with the least rainfall) is February (3mm).

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Average rainfall days in September
Labrador, Costa Rica

Average rainfall days in September - Labrador, Costa Rica
  • Average rainfall days in September: 27.7 days

The month with the highest number of rainy days is September (27.7 days).
The month with the least rainy days is February (3.1 days).

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

Average daylight in September / Average sunshine in September - Labrador, 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: 8.7h

The month with the most sunshine is March (Average sunshine: 9.9h).
The month with the least sunshine is October (Average sunshine: 8h).

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Average sunshine days in September
Labrador, Costa Rica

Average sunshine days in September - Labrador, Costa Rica
  • Average sunshine days in September: 1.4 days

The month with the most sunshine days is January (25.8 days).
The month with the least sunshine days is September (1.4 days).

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Average UV index in September
Labrador, Costa Rica

Average UV index in September - Labrador, 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
Labrador, Costa Rica

Average cloud cover in September - Labrador, Costa Rica
  • Average cloud cover in September: 42

The month with the most cloud cover is October (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 10).

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Average visibility in September
Labrador, Costa Rica

Average visibility in September - Labrador, Costa Rica
  • Average visibility in September: 9km

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

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