September weather forecast
Puerto Jiménez, Costa Rica

September records a slightly diminished monsoon impact in Puerto Jiménez, as rainfall levels reduce compared to August. The month's temperature variations exhibit a moderate dip from the preceding month, signifying an onset of cooling trends. With reduced rainfall of 183mm (7.2"), September holds the lowest monthly rainfall of the monsoon season. Extensive daylight hours persist, along with increased visibility, enhancing Puerto Jiménez's visual appeal. As the city transitions towards October, residents and visitors can expect similar relaxed monsoon conditions with a further decline in rainfall.

Temperature

Puerto Jiménez registers an average high-temperature of a still moderately hot 28.4°C (83.1°F) with the arrival of September, showing minor deviation from the preceding month. During September, Puerto Jiménez records a consistent average nighttime temperature of 21.9°C (71.4°F).

Heat index

In September, the heat index is evaluated at a hot 34°C (93.2°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In Puerto Jiménez, the average relative humidity in September is 85%.

Rainfall

In September, in Puerto Jiménez, the rain falls for 28.6 days. Throughout September, 183mm (7.2") of precipitation is accumulated. In Puerto Jiménez, during the entire year, the rain falls for 309.5 days and collects up to 2106mm (82.91") of precipitation.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September in Puerto Jiménez, Costa Rica, sunrise is at 05:24 and sunset at 17:41. On the last day of the month, sunrise is at 05:21 and sunset at 17:24 CST.

Sunshine

The average sunshine in September is 8.7h.

UV index

January, February, June through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. 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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.