Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Grand Cess's average high-temperature in September is a still moderately hot 26.4°C (79.5°F), indicating a subtle variation from August. September nighttime temperatures hover close to the daytime peak with an average of 23.6°C (74.5°F).Humidity
September and October, with an average relative humidity of 87%, are the most humid months in Grand Cess.Rainfall
In Grand Cess, in September, it is raining for 25.1 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, there are 294.8 rainfall days, and 1200mm (47.24") of precipitation is accumulated.Daylight
In September, the average length of the day in Grand Cess, Liberia, is 12h and 8min.On the first day of September in Grand Cess, sunrise is at 06:26 and sunset at 18:38. On the last day of the month, sunrise is at 06:20 and sunset at 18:25 GMT.
Sunshine
The months with the least sunshine are August and September, with an average of 3.9h of sunshine.UV index
In September, the average daily maximum UV index in Grand Cess is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grand Cess in September?
What are the most humid months in Grand Cess?
What is the average humidity in September in Grand Cess?
How much does it rain in Grand Cess in September?
What is the average length of the day in September in Grand Cess?
When is the sunrise / sunset in September in Grand Cess?
What are the months with the least sunshine in Grand Cess?
How many hours of sunshine does Grand Cess have in September?
What is the UV index intensity in September in Grand Cess?
Average temperature in September
Grand Cess, Liberia
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is April (30.5°C).
The month with the lowest average high temperature is August (26°C).
- Average low temperature in September: 23.6°C
The month with the highest average low temperature is April (25.4°C).
The coldest month (with the lowest average low temperature) is August (23.1°C).
Average pressure in September
Grand Cess, Liberia
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is July (1014.4mbar).
The months with the lowest atmospheric pressure are February and March (1010.4mbar).
Average wind speed in September
Grand Cess, Liberia
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is August (12.9km/h).
The calmest month (with the lowest average wind speed) is November (8.1km/h).
Average humidity in September
Grand Cess, Liberia
- Average humidity in September: 87%
The months with the highest relative humidity are September and October (87%).
The month with the lowest relative humidity is January (79%).
Average rainfall in September
Grand Cess, Liberia
- Average rainfall in September: 82mm
The wettest month (with the highest rainfall) is June (174mm).
The driest month (with the least rainfall) is August (36mm).
Average rainfall days in September
Grand Cess, Liberia
- Average rainfall days in September: 25.1 days
The month with the highest number of rainy days is October (28.8 days).
The month with the least rainy days is July (19.8 days).
Average daylight in September /
Average sunshine in September
Grand Cess, Liberia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in September: 3h and 5min
The month with the most sunshine is January (Average sunshine: 8h and 48min).
The months with the least sunshine are August and September (Average sunshine: 3h and 54min).
Average sunshine days in September
Grand Cess, Liberia
- Average sunshine days in September: 3.6 days
The months with the most sunshine days are July and August (8.5 days).
The month with the least sunshine days is November (1.4 days).
Average UV index in September
Grand Cess, Liberia
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Grand Cess, Liberia
- Average cloud cover in September: 76
The month with the most cloud cover is September (Cloud cover 76).
The month with the least cloud cover is January (Cloud cover 32).
Average visibility in September
Grand Cess, Liberia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
Grand Cess, Liberia
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