September weather forecast
Sussex, Sierra Leone

alterations appear in September weather in Sussex. A substantial decrease in rainfall to 220mm (8.66") signals the receding of the rainy season. The maximum temperature rises moderately to 28.1°C (82.6°F), and a steady wind speed of 9.5km/h (5.9mph) is maintained. There is a slight lift in the number of sunshine hours. The month of September leans towards the end of the monsoon season, welcoming fewer showers and warmer temperatures.

Temperature

Sussex in September witnesses an average high-temperature of a still moderately hot 28.1°C (82.6°F), indicating a slight variation from August's 27.3°C (81.1°F). Nighttime temperature in Sussex, Sierra Leone, reflects an average dip to a still moderately hot 24.4°C (75.9°F) in September, subtly cooler than its daytime highs.

Heat index

September's heat index is evaluated at a hot 33°C (91.4°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. 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 are extremely significant for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

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

Rainfall

In Sussex, in September, it is raining for 28.6 days, with typically 220mm (8.66") of accumulated precipitation. Throughout the year, in Sussex, there are 205.9 rainfall days, and 1507mm (59.33") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of September in Sussex, sunrise is at 06:44 and sunset at 19:00. On the last day of the month, sunrise is at 06:41 and sunset at 18:44 GMT.

Sunshine

The average sunshine in September in Sussex, Sierra Leone, is 6.7h.

UV index

January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests this advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.