September weather forecastBioco, Equatorial Guinea
September
Weather in September
With September, Bioko begins to witness a retreat of monsoon as the rainfall eases down to 298mm (11.73"). However, the humidity remains high, and the predominant cloud cover recalls lingering monsoon memories. Temperatures, too, begin to rise slowly, hinting at the forthcoming dry period. The gusty winds start to subside, creating a more relaxed atmosphere. As the days grow longer, the city comes alive, brilliant in its post-monsoon beauty.Temperature
The transition from August to September sees an average high-temperature of a still warm 25.6°C (78.1°F), indicating a minor variance from the prior month. Bioco records a slight downturn to an average a still moderately hot 24.6°C (76.3°F) during the nights of September.Humidity
The average relative humidity in September in Bioco is 83%.Rainfall
In Bioco, during September, the rain falls for 28.5 days and regularly aggregates up to 298mm (11.73") of precipitation. In Bioco, during the entire year, the rain falls for 318.9 days and collects up to 2594mm (102.13") of precipitation.Daylight
The average length of the day in September in Bioco is 12h and 8min.On the first day of September in Bioco, Equatorial Guinea, sunrise is at 06:19 and sunset at 18:30. On the last day of the month, sunrise is at 06:12 and sunset at 18:17 WAT.
Sunshine
In Bioco, the average sunshine in September is 7h.UV index
January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index in Bioco. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 7 transforms into the following advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bioco, Equatorial Guinea
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is March (28.5°C).
The months with the lowest average high temperature are July and August (25.5°C).
- Average low temperature in September: 24.6°C
The month with the highest average low temperature is March (27.3°C).
The coldest month (with the lowest average low temperature) is August (24.3°C).
Average pressure in September
Bioco, Equatorial Guinea
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is July (1013.6mbar).
The months with the lowest atmospheric pressure are February and March (1009.8mbar).
Average wind speed in September
Bioco, Equatorial Guinea
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is August (13.6km/h).
The calmest month (with the lowest average wind speed) is May (9.7km/h).
Average humidity in September
Bioco, Equatorial Guinea
- Average humidity in September: 83%
The months with the highest relative humidity are July and August (84%).
The months with the lowest relative humidity are January, April, May and December (78%).
Average rainfall in September
Bioco, Equatorial Guinea
- Average rainfall in September: 298mm
The wettest month (with the highest rainfall) is July (412mm).
The driest month (with the least rainfall) is December (51mm).
Average rainfall days in September
Bioco, Equatorial Guinea
- Average rainfall days in September: 28.5 days
The month with the highest number of rainy days is August (30.1 days).
The months with the least rainy days are January and December (21.3 days).
Average daylight in September /
Average sunshine in September
Bioco, Equatorial Guinea
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is December (Average sunshine: 9h and 24min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).
Average sunshine days in September
Bioco, Equatorial Guinea
- Average sunshine days in September: 1.1 days
The month with the most sunshine days is January (5.8 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index in September
Bioco, Equatorial 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
Bioco, Equatorial Guinea
- Average cloud cover in September: 52
The month with the most cloud cover is August (Cloud cover 59).
The month with the least cloud cover is December (Cloud cover 20).
Average visibility in September
Bioco, Equatorial Guinea
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
