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
September
Weather in September
Temperature
As Calai transitions into September, the average high-temperature is observed to slightly rise from 30.1°C (86.2°F) in August to a still tropical 34.3°C (93.7°F). In the month of September, Calai witnesses a marked temperature drop at night, averaging a low of 16°C (60.8°F).Humidity
September is the least humid month in Calai, with an average relative humidity of 19%.Rainfall
In Calai, rain does not fall in June through September.Daylight
In Calai, the average length of the day in September is 12h and 0min.On the first day of September, sunrise is at 05:47 and sunset at 17:33. On the last day of the month, sunrise is at 05:23 and sunset at 17:38 WAT.
Sunshine
In Calai, Angola, the average sunshine in September is 10h.UV index
The months with the highest UV index are September, October and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 7 during September translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
Does it rain in September?
How many hours of daylight does Calai have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Calai, Angola
- Average high temperature in September: 34.3°C
The warmest month (with the highest average high temperature) is October (36.3°C).
The month with the lowest average high temperature is June (25.4°C).
- Average low temperature in September: 16°C
The month with the highest average low temperature is November (21.8°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in September
Calai, Angola
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is January (1009.3mbar).
Average wind speed in September
Calai, Angola
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is September (11.1km/h).
The calmest month (with the lowest average wind speed) is December (8.2km/h).
Average humidity in September
Calai, Angola
- Average humidity in September: 19%
The month with the highest relative humidity is February (65%).
The month with the lowest relative humidity is September (19%).
Average rainfall in September
Calai, Angola
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is January (74mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).
Average rainfall days in September
Calai, Angola
- Average rainfall days in September: 0.6 days
The month with the highest number of rainy days is December (18.6 days).
The month with the least rainy days is August (0 days).
Average daylight in September /
Average sunshine in September
Calai, Angola
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is November (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 9h and 0min).
Average sunshine days in September
Calai, Angola
- Average sunshine days in September: 28.9 days
The months with the most sunshine days are July and August (31 days).
The month with the least sunshine days is December (10.7 days).
Average UV index in September
Calai, Angola
- Average UV index in September: 7
The months with the highest UV index are September, October and December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 5).
Average cloud cover in September
Calai, Angola
- Average cloud cover in September: 3
The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 1).
Average visibility in September
Calai, Angola
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February and March (9km).
