Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Llano Brenes observes an average high-temperature of a still moderately hot 26.3°C (79.3°F) in September, barely different from 26.7°C (80.1°F) in August. An average low-temperature of 19.2°C (66.6°F) is expected during September.Humidity
In September, the average relative humidity in Llano Brenes, Costa Rica, is 87%.Rainfall
In Llano Brenes, in September, during 29.4 rainfall days, 288mm (11.34") of precipitation is typically accumulated. Throughout the year, there are 272 rainfall days, and 2217mm (87.28") of precipitation is accumulated.Daylight
In Llano Brenes, the average length of the day in September is 12h and 11min.On the first day of September in Llano Brenes, sunrise is at 05:28 and sunset at 17:46. On the last day of the month, sunrise is at 05:26 and sunset at 17:28 CST.
Sunshine
In September, the average sunshine in Llano Brenes is 7.6h.UV index
The months with the highest UV index are January through April, June, July, September, October and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the temperature in September in Llano Brenes?
What is the average humidity in September in Llano Brenes?
How much does it rain in Llano Brenes in September?
What is the average length of the day in September in Llano Brenes?
What time are sunrise and sunset in September in Llano Brenes?
How long on average sun shines in September in Llano Brenes?
What is the month with the highest UV index in Llano Brenes?
What is the UV index intensity in September in Llano Brenes?
Average temperature in September
Llano Brenes, Costa Rica
- Average high temperature in September: 26.3°C
The warmest months (with the highest average high temperature) are March and April (29.7°C).
The month with the lowest average high temperature is October (25.4°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in September
Llano Brenes, Costa Rica
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).
Average wind speed in September
Llano Brenes, Costa Rica
- Average wind speed in September: 3.8km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is September (3.8km/h).
Average humidity in September
Llano Brenes, Costa Rica
- Average humidity in September: 87%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Llano Brenes, Costa Rica
- Average rainfall in September: 288mm
The wettest month (with the highest rainfall) is October (396mm).
The driest month (with the least rainfall) is February (17mm).
Average rainfall days in September
Llano Brenes, Costa Rica
- Average rainfall days in September: 29.4 days
The month with the highest number of rainy days is October (30.2 days).
The month with the least rainy days is February (10.3 days).
Average daylight in September /
Average sunshine in September
Llano Brenes, Costa Rica
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is March (Average sunshine: 9h and 24min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).
Average sunshine days in September
Llano Brenes, Costa Rica
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is January (16.7 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in September
Llano Brenes, Costa Rica
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, June, July, September, October and December (UV index 6).
The months with the lowest UV index are May, August and November (UV index 5).
Average cloud cover in September
Llano Brenes, Costa Rica
- Average cloud cover in September: 50
The month with the most cloud cover is October (Cloud cover 54).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in September
Llano Brenes, Costa Rica
- Average visibility in September: 7km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are August, September, October and November (7km).
Llano Brenes, Costa Rica
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