September weather forecast
Tambor, Costa Rica

For Tambor, September brings with it more of the same wet conditions experienced in August. Despite sharing similar climatic patterns, September experiences a decrease in rainfall to 209mm (8.23") compared to August's 239mm (9.41"). The UV index maintains a steady rate, indicating a consistent level of UV radiation throughout the months. The temperature falls slightly in September; however, the change is too small to effectively impact the overall climate of the month, and it still feels reasonably warm.

Temperature

With the advent of September, Tambor's high-temperatures adjust to a still warm 28.8°C (83.8°F), closely aligning with the preceding month. During the month of September, the nighttime temperature in Tambor falls to an average of 23.4°C (74.1°F).

Heat index

The heat index value for September is appraised at a sweltering 35°C (95°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In September, the average relative humidity is 82%.

Rainfall

In September, the rain falls for 28.7 days. Throughout September, 209mm (8.23") of precipitation is accumulated. Throughout the year, in Tambor, there are 248.3 rainfall days, and 1708mm (67.24") of precipitation is accumulated.

Sea temperature

January through March, July through December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
Note: In water temperatures ranging between 25°C (77°F) and 29°C (84.2°F), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

In Tambor, the average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 05:30 and sunset at 17:48. On the last day of the month, sunrise is at 05:28 and sunset at 17:31 CST.

Sunshine

In Tambor, the average sunshine in September is 8.2h.

UV index

The months with the highest UV index in Tambor are January through October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 7 in September translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be attentive! The UV exposure is heightened with reflections from sand and water.