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
September
Weather in September
Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still warm 28.9°C (84°F) from August's 29.4°C (84.9°F). Cebadilla records an average nighttime low-temperature of 23.2°C (73.8°F) throughout September.Heat index
The heat index value for September is computed to be a very hot 35°C (95°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.Understand that the heat index values take into account shaded locations and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In September, the average relative humidity is 82%.Rainfall
In Cebadilla, during September, the rain falls for 27.7 days and regularly aggregates up to 193mm (7.6") of precipitation. Throughout the year, there are 218.6 rainfall days, and 1456mm (57.32") of precipitation is accumulated.Daylight
In Cebadilla, the average length of the day in September is 12h and 11min.On the first day of September in Cebadilla, sunrise is at 05:29 and sunset at 17:48. On the last day of the month, sunrise is at 05:27 and sunset at 17:30 CST.
Sunshine
The average sunshine in September in Cebadilla is 8.7h.UV index
The months with the highest UV index are January through September and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the UV index of 7 transforms into the following advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Cebadilla have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Cebadilla, 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).
Average pressure in September
Cebadilla, 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).
Average wind speed in September
Cebadilla, 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).
Average humidity in September
Cebadilla, 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%).
Average rainfall in September
Cebadilla, 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).
Average rainfall days in September
Cebadilla, 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).
Average daylight in September /
Average sunshine in September
Cebadilla, 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 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is March (Average sunshine: 9h and 54min).
The month with the least sunshine is October (Average sunshine: 8h and 0min).
Average sunshine days in September
Cebadilla, 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).
Average UV index in September
Cebadilla, Costa Rica
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September and December (UV index 7).
The months with the lowest UV index are October and November (UV index 6).
Average cloud cover in September
Cebadilla, 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).
Average visibility in September
Cebadilla, Costa Rica
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
