September weather forecastBioko, Congo
September
Weather in September
September, the first month of the spring in Bioko, is also a moderately hot month, with an average temperature ranging between min 22.4°C (72.3°F) and max 25.7°C (78.3°F).Temperature
With the onset of September, Bioko's average high-temperature clocks in at a still warm 25.7°C (78.3°F), showing a minor fluctuation from the previous month. Bioko encounters a small divergence from daytime high temperatures, averaging a low-temperature of 22.4°C (72.3°F) during September nights.Humidity
May through December, with an average relative humidity of 83%, are the most humid months.Rainfall
In September, the rain falls for 15.3 days. Throughout September, 17mm (0.67") of precipitation is accumulated. Throughout the year, in Bioko, there are 217.2 rainfall days, and 881mm (34.69") of precipitation is accumulated.Daylight
The average length of the day in September in Bioko is 12h and 5min.On the first day of the month, sunrise is at 06:11 and sunset at 18:13. On the last day of September, in Bioko, Congo, sunrise is at 05:58 and sunset at 18:07 WAT.
Sunshine
With an average of 5.8h of sunshine, September has the least sunshine of the year in Bioko.UV index
The average daily maximum UV index in September in Bioko is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bioko, Congo
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is March (30.2°C).
The month with the lowest average high temperature is August (24.7°C).
- Average low temperature in September: 22.4°C
The month with the highest average low temperature is March (26°C).
The coldest month (with the lowest average low temperature) is July (20.8°C).
Average pressure in September
Bioko, Congo
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is July (1014.5mbar).
The month with the lowest atmospheric pressure is February (1009.9mbar).
Average wind speed in September
Bioko, Congo
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is October (11.4km/h).
The calmest month (with the lowest average wind speed) is January (8.7km/h).
Average humidity in September
Bioko, Congo
- Average humidity in September: 83%
The months with the highest relative humidity are May, June, July, August, September, October, November and December (83%).
The month with the lowest relative humidity is March (80%).
Average rainfall in September
Bioko, Congo
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is December (159mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Bioko, Congo
- Average rainfall days in September: 15.3 days
The month with the highest number of rainy days is December (25.8 days).
The month with the least rainy days is June (5.1 days).
Average daylight in September /
Average sunshine in September
Bioko, Congo
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 5h and 48min
The months with the most sunshine are April, May and December (Average sunshine: 8h and 12min).
The month with the least sunshine is September (Average sunshine: 5h and 48min).
Average sunshine days in September
Bioko, Congo
- Average sunshine days in September: 9.1 days
The month with the most sunshine days is July (22.4 days).
The month with the least sunshine days is November (2.6 days).
Average UV index in September
Bioko, Congo
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Bioko, Congo
- Average cloud cover in September: 62
The month with the most cloud cover is October (Cloud cover 66).
The month with the least cloud cover is May (Cloud cover 40).
Average visibility in September
Bioko, Congo
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
