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 sea temperature 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
The arrival of September brings an average high-temperature of a still warm 26.6°C (79.9°F), nearly identical to August's 25.8°C (78.4°F). Throughout the nights in September, Sal notes an average low of 26°C (78.8°F), a small dip from the daytime peak.Humidity
In Sal, the average relative humidity in September is 83%.Rainfall
In September, the rain falls for 8 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Sal, Cape Verde, during the entire year, the rain falls for 37.7 days and collects up to 90mm (3.54") of precipitation.Sea temperature
The month with the warmest seawater is September, with an average sea temperature of 27°C (80.6°F).Note: Water temperature from 25°C (77°F) to 29°C (84.2°F) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.
Daylight
In Sal, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 06:18 and sunset at 18:44. On the last day of September, sunrise is at 06:21 and sunset at 18:21 -01.
Sunshine
In September, the average sunshine in Sal is 8.1h.UV index
The months with the highest UV index are September and October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 7 in September transforms into the following instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September in Sal?
How much does it rain in September?
What month is the sea warmest?
What is the water temperature in September?
What is the average length of the day in September?
When are sunrise and 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 reading in September?
Average temperature in September
Sal, Cape Verde
- Average high temperature in September: 26.6°C
The warmest month (with the highest average high temperature) is October (26.7°C).
The month with the lowest average high temperature is March (21.6°C).
- Average low temperature in September: 26°C
The month with the highest average low temperature is September (26°C).
The coldest month (with the lowest average low temperature) is March (20.6°C).
Average pressure in September
Sal, Cape Verde
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is January (1016.2mbar).
The month with the lowest atmospheric pressure is August (1013mbar).
Average wind speed in September
Sal, Cape Verde
- Average wind speed in September: 20.8km/h
The windiest month (with the highest average wind speed) is February (30.2km/h).
The calmest month (with the lowest average wind speed) is August (17.9km/h).
Average humidity in September
Sal, Cape Verde
- Average humidity in September: 83%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are January and December (72%).
Average rainfall in September
Sal, Cape Verde
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is August (35mm).
The driest month (with the least rainfall) is January (0mm).
Average rainfall days in September
Sal, Cape Verde
- Average rainfall days in September: 8 days
The month with the highest number of rainy days is September (8 days).
The month with the least rainy days is January (1 days).
Average sea temperature in September
Sal, Cape Verde
- Average sea temperature in September: 27°C
The best month for swimming (with the highest average sea temperature) is September (27°C).
The coldest months (with the lowest average sea temperature) are January, February, March, April and May (22°C).
Average daylight in September /
Average sunshine in September
Sal, Cape Verde
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is August (Average sunshine: 7h and 0min).
Average sunshine days in September
Sal, Cape Verde
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is January (29.5 days).
The month with the least sunshine days is September (18.9 days).
Average UV index in September
Sal, Cape Verde
- Average UV index in September: 7
The months with the highest UV index are September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, November and December (UV index 6).
Average cloud cover in September
Sal, Cape Verde
- Average cloud cover in September: 37
The month with the most cloud cover is August (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 18).
Average visibility in September
Sal, Cape Verde
- 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).
Sal, Cape Verde
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