September weather forecastSão Jorge, Cape Verde
September
Weather in September
September, the first month of the autumn in São Jorge, is still a warm month, with an average temperature fluctuating between 25.8°C (78.4°F) and 28.1°C (82.6°F).Temperature
September commences with an average high-temperature of a still warm 28.1°C (82.6°F), showing little deviation from August's 27.6°C (81.7°F). São Jorge's September nights exhibit a subtle drop in temperature, averaging at a still warm 25.8°C (78.4°F), closely aligned with the daytime highs.Heat index
In September, the heat index is computed to be a hot 32°C (89.6°F). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.Always consider that heat index estimations are for light winds and places in the shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
The months with the highest humidity are June through September, with an average relative humidity of 79%.Rainfall
The month with the most rainfall in São Jorge is September, when the rain falls for 14 days and typically aggregates up to 57mm (2.24") of precipitation.Daylight
The average length of the day in September is 12h and 13min.On the first day of the month, sunrise is at 06:25 and sunset at 18:49. On the last day of September, in São Jorge, sunrise is at 06:27 and sunset at 18:27 -01.
Sunshine
In São Jorge, the average sunshine in September is 7.9h.UV index
August through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 7 in September translates into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete 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
São Jorge, Cape Verde
- Average high temperature in September: 28.1°C
The warmest month (with the highest average high temperature) is October (28.4°C).
The months with the lowest average high temperature are February and March (23.7°C).
- Average low temperature in September: 25.8°C
The months with the highest average low temperature are September and October (25.8°C).
The coldest month (with the lowest average low temperature) is February (20.9°C).
Average pressure in September
São Jorge, Cape Verde
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is January (1015.2mbar).
The month with the lowest atmospheric pressure is September (1012.5mbar).
Average wind speed in September
São Jorge, Cape Verde
- Average wind speed in September: 16km/h
The windiest month (with the highest average wind speed) is February (25.8km/h).
The calmest month (with the lowest average wind speed) is August (14km/h).
Average humidity in September
São Jorge, Cape Verde
- Average humidity in September: 79%
The months with the highest relative humidity are June, July, August and September (79%).
The month with the lowest relative humidity is January (69%).
Average rainfall in September
São Jorge, Cape Verde
- Average rainfall in September: 57mm
The wettest month (with the highest rainfall) is September (57mm).
The driest months (with the least rainfall) are January, March and May (1mm).
Average rainfall days in September
São Jorge, Cape Verde
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is September (14 days).
The month with the least rainy days is January (0.7 days).
Average daylight in September /
Average sunshine in September
São Jorge, Cape Verde
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 0min).
Average sunshine days in September
São Jorge, Cape Verde
- Average sunshine days in September: 12.5 days
The months with the most sunshine days are January and May (29.3 days).
The month with the least sunshine days is September (12.5 days).
Average UV index in September
São Jorge, Cape Verde
- Average UV index in September: 7
The months with the highest UV index are August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July and December (UV index 6).
Average cloud cover in September
São Jorge, Cape Verde
- Average cloud cover in September: 44
The month with the most cloud cover is August (Cloud cover 52).
The month with the least cloud cover is May (Cloud cover 13).
Average visibility in September
São Jorge, 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).
