September weather forecastDiari, Guinea
September
Weather in September
September, the first month of the autumn in Diari, is also a moderately hot month, with temperature in the range of an average high of 26.3°C (79.3°F) and an average low of 18.7°C (65.7°F).Temperature
The introduction of September notes a subtle temperature variation to a still moderately hot 26.3°C (79.3°F) from August's 25.3°C (77.5°F). In Diari, September's nights observe an average temperature dip to a comfortable 18.7°C (65.7°F).Humidity
The average relative humidity in September is 88%.Rainfall
In Diari, in September, it is raining for 29.3 days, with typically 226mm (8.9") of accumulated precipitation. In Diari, during the entire year, the rain falls for 178.1 days and collects up to 1406mm (55.35") of precipitation.Daylight
In Diari, the average length of the day in September is 12h and 11min.On the first day of September, sunrise is at 06:39 and sunset at 18:59. On the last day of the month, sunrise is at 06:38 and sunset at 18:40 GMT.
Sunshine
In Diari, the average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index in Diari is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Diari, Guinea
- Average high temperature in September: 26.3°C
The warmest month (with the highest average high temperature) is April (35.9°C).
The month with the lowest average high temperature is August (25.3°C).
- Average low temperature in September: 18.7°C
The month with the highest average low temperature is May (21.2°C).
The coldest month (with the lowest average low temperature) is January (16.5°C).
Average pressure in September
Diari, Guinea
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is July (1013.7mbar).
The month with the lowest atmospheric pressure is April (1010mbar).
Average wind speed in September
Diari, Guinea
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is February (8.8km/h).
The calmest month (with the lowest average wind speed) is October (6.1km/h).
Average humidity in September
Diari, Guinea
- Average humidity in September: 88%
The month with the highest relative humidity is August (91%).
The month with the lowest relative humidity is February (23%).
Average rainfall in September
Diari, Guinea
- Average rainfall in September: 226mm
The wettest month (with the highest rainfall) is August (367mm).
The driest months (with the least rainfall) are January and December (0mm).
Average rainfall days in September
Diari, Guinea
- Average rainfall days in September: 29.3 days
The month with the highest number of rainy days is August (30.4 days).
The months with the least rainy days are January and December (0.3 days).
Average daylight in September /
Average sunshine in September
Diari, Guinea
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 7h and 24min
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: 5h and 30min).
Average sunshine days in September
Diari, Guinea
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is December (30.7 days).
The month with the least sunshine days is July (0.3 days).
Average UV index in September
Diari, Guinea
- Average UV index in September: 6
The months with the highest UV index are January, February, March and April (UV index 7).
The month with the lowest UV index is August (UV index 5).
Average cloud cover in September
Diari, Guinea
- Average cloud cover in September: 53
The month with the most cloud cover is August (Cloud cover 70).
The months with the least cloud cover are February and March (Cloud cover 8).
Average visibility in September
Diari, Guinea
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The month with the lowest visibility is August (6km).





