September weather forecastRatoma, Guinea
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Ratoma, Guinea, with an average temperature fluctuating between 24.1°C (75.4°F) and 27.9°C (82.2°F).Temperature
With the onset of September, the average high-temperature registers at a still moderately hot 27.9°C (82.2°F), subtly different from August's 27°C (80.6°F). Registering an almost steady temperature, Ratoma's nights in September see an average low of 24.1°C (75.4°F).Heat index
September's average heat index is computed to be a hot 33°C (91.4°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. 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 'apparent temperature' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In Ratoma, the average relative humidity in September is 85%.Rainfall
In Ratoma, in September, it is raining for 24.7 days, with typically 181mm (7.13") of accumulated precipitation. Throughout the year, there are 172.9 rainfall days, and 1410mm (55.51") of precipitation is accumulated.Daylight
In September, the average length of the day in Ratoma is 12h and 11min.On the first day of the month, sunrise is at 06:45 and sunset at 19:03. On the last day of September, in Ratoma, sunrise is at 06:43 and sunset at 18:45 GMT.
Sunshine
In Ratoma, the average sunshine in September is 6.5h.UV index
The months with the highest UV index in Ratoma, Guinea, are January through June, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during September leads to these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ratoma, Guinea
- Average high temperature in September: 27.9°C
The warmest month (with the highest average high temperature) is December (31.1°C).
The month with the lowest average high temperature is August (27°C).
- Average low temperature in September: 24.1°C
The months with the highest average low temperature are May and June (25.4°C).
The coldest month (with the lowest average low temperature) is February (22.8°C).
Average pressure in September
Ratoma, Guinea
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is July (1013.7mbar).
The months with the lowest atmospheric pressure are February and March (1010.5mbar).
Average wind speed in September
Ratoma, Guinea
- Average wind speed in September: 9.3km/h
The windiest month (with the highest average wind speed) is August (11.5km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).
Average humidity in September
Ratoma, Guinea
- Average humidity in September: 85%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (63%).
Average rainfall in September
Ratoma, Guinea
- Average rainfall in September: 181mm
The wettest month (with the highest rainfall) is August (478mm).
The driest month (with the least rainfall) is February (1mm).
Average rainfall days in September
Ratoma, Guinea
- Average rainfall days in September: 24.7 days
The month with the highest number of rainy days is August (28.3 days).
The month with the least rainy days is January (1 days).
Average daylight in September /
Average sunshine in September
Ratoma, Guinea
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 6h and 30min
The months with the most sunshine are February and March (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 4h and 30min).
Average sunshine days in September
Ratoma, Guinea
- Average sunshine days in September: 4.3 days
The month with the most sunshine days is January (29.7 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in September
Ratoma, Guinea
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).
Average cloud cover in September
Ratoma, Guinea
- Average cloud cover in September: 57
The month with the most cloud cover is August (Cloud cover 71).
The month with the least cloud cover is February (Cloud cover 9).
Average visibility in September
Ratoma, Guinea
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).
