September weather forecastLimonal, Costa Rica
September
Weather in September
September, the first month of the autumn in Limonal, is also a moderately hot month, with an average temperature fluctuating between 28.9°C (84°F) and 23.2°C (73.8°F).Temperature
September's arrival registers an average high-temperature of a still warm 28.9°C (84°F), closely aligning with the temperature of the previous month. Throughout September, Limonal anticipates an average low-temperature of 23.2°C (73.8°F).Heat index
For September, the heat index is evaluated at a sweltering 35°C (95°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
In September, the average relative humidity is 82%.Rainfall
In September, the rain falls for 27.7 days. Throughout September, 193mm (7.6") of precipitation is accumulated. Throughout the year, there are 218.6 rainfall days, and 1456mm (57.32") of precipitation is accumulated.Daylight
In Limonal, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 05:30 and sunset at 17:49. On the last day of September, sunrise is at 05:28 and sunset at 17:30 CST.
Sunshine
In September, the average sunshine 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 estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Limonal, 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
Limonal, 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
Limonal, 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
Limonal, 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
Limonal, 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
Limonal, 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
Limonal, Costa Rica
- Average daylight in September: 12h and 12min
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 42min
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
Limonal, 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
Limonal, 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
Limonal, 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
Limonal, 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).
