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
With the advent of September, Coto Brus experiences an average high-temperature of a still warm 28.4°C (83.1°F), mirroring a close resemblance to the previous month. Coto Brus records an average temperature drop to a pleasant 21.9°C (71.4°F) in September.Heat index
For September, the heat index is evaluated at a hot 34°C (93.2°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
The average relative humidity in September in Coto Brus is 85%.Rainfall
In September, in Coto Brus, the rain falls for 28.6 days. Throughout September, 183mm (7.2") of precipitation is accumulated. Throughout the year, there are 309.5 rainfall days, and 2106mm (82.91") of precipitation is accumulated.Daylight
In Coto Brus, Costa Rica, the average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 05:23 and sunset at 17:40. On the last day of the month, sunrise is at 05:20 and sunset at 17:23 CST.
Sunshine
In September, the average sunshine in Coto Brus is 8.7h.UV index
The months with the lowest UV index are January, February, June through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
How hot is September in Coto Brus?
What is the average humidity in September in Coto Brus?
How much does it rain in Coto Brus in September?
What is the average length of the day in September in Coto Brus?
When is the sunrise / sunset in September in Coto Brus?
How long on average sun shines in September in Coto Brus?
What are the months with the lowest UV index in Coto Brus?
What is the UV index intensity in September in Coto Brus?
Average temperature in September
Coto Brus, Costa Rica
- Average high temperature in September: 28.4°C
The warmest month (with the highest average high temperature) is March (31.7°C).
The month with the lowest average high temperature is October (27.6°C).
- Average low temperature in September: 21.9°C
The month with the highest average low temperature is May (22.7°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure in September
Coto Brus, Costa Rica
- Average pressure in September: 1011.1mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The months with the lowest atmospheric pressure are October and November (1010.8mbar).
Average wind speed in September
Coto Brus, Costa Rica
- Average wind speed in September: 4.9km/h
The windiest month (with the highest average wind speed) is March (6km/h).
The calmest months (with the lowest average wind speed) are July and August (4.5km/h).
Average humidity in September
Coto Brus, Costa Rica
- Average humidity in September: 85%
The months with the highest relative humidity are October and November (86%).
The month with the lowest relative humidity is March (72%).
Average rainfall in September
Coto Brus, Costa Rica
- Average rainfall in September: 183mm
The wettest month (with the highest rainfall) is October (286mm).
The driest month (with the least rainfall) is February (34mm).
Average rainfall days in September
Coto Brus, Costa Rica
- Average rainfall days in September: 28.6 days
The month with the highest number of rainy days is July (30.7 days).
The month with the least rainy days is February (14.3 days).
Average daylight in September /
Average sunshine in September
Coto Brus, Costa Rica
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is February (Average sunshine: 9h and 36min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).
Average sunshine days in September
Coto Brus, Costa Rica
- Average sunshine days in September: 1 days
The month with the most sunshine days is January (9.1 days).
The month with the least sunshine days is August (0.1 days).
Average UV index in September
Coto Brus, Costa Rica
- Average UV index in September: 6
The months with the highest UV index are March, April and May (UV index 7).
The months with the lowest UV index are January, February, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Coto Brus, Costa Rica
- Average cloud cover in September: 43
The month with the most cloud cover is October (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 19).
Average visibility in September
Coto Brus, Costa Rica
- Average visibility in September: 9km
The months with the highest visibility are January, February, March and April (10km).
The month with the lowest visibility is November (8km).
Coto Brus, Costa Rica
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