September weather forecast
Chacarita, Costa Rica

The first month of the autumn, September, is also a moderately hot month in Chacarita, Costa Rica, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 23.2°C (73.8°F).

Temperature

The arrival of September marks a slight shift to an average high-temperature of a still warm 28.9°C (84°F) from August's 29.4°C (84.9°F). An average low-temperature of 23.2°C (73.8°F) marks the month of September.

Heat index

Throughout September, the heat index is appraised at a very hot 35°C (95°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', arises from combining readings of air temperature and relative moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In September, the average relative humidity in Chacarita, Costa Rica, is 82%.

Rainfall

In Chacarita, 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.

Sea temperature

In September, the average sea temperature in Chacarita is 28.8°C (83.8°F).
Note: Swimming, diving, and other water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are highly enjoyable and provide prolonged comfort without unease.

Daylight

In September, the average length of the day in Chacarita, Costa Rica, is 12h and 11min.
On the first day of September in Chacarita, sunrise is at 05:29 and sunset at 17:47. On the last day of the month, sunrise is at 05:27 and sunset at 17:30 CST.

Sunshine

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

UV index

January through September and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value 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 average maximum UV index of 7 translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.