September weather forecast
Ribi, Sierra Leone

September, the first month of the autumn in Ribi, is still a warm month, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 21.8°C (71.2°F).

Temperature

The advent of September brings an average high-temperature of a still warm 28.9°C (84°F), exhibiting minor difference from the previous month. Throughout September, a steady low-temperature average of 21.8°C (71.2°F) is noted.

Heat index

The heat index for September is evaluated at a sweltering 37°C (98.6°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September in Ribi is 92%.

Rainfall

In Ribi, during September, the rain falls for 28.6 days and regularly aggregates up to 261mm (10.28") of precipitation. Throughout the year, there are 225.8 rainfall days, and 1471mm (57.91") of precipitation is accumulated.

Daylight

The average length of the day in September in Ribi is 12h and 10min.
On the first day of the month, sunrise is at 06:41 and sunset at 18:58. On the last day of September, sunrise is at 06:38 and sunset at 18:41 GMT.

Sunshine

In Ribi, the average sunshine in September is 5.2h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.