September weather forecast
Salvador, Brazil

The reduction in rainfall continues into September in Salvador, as the number of rainy days drops to about 12. The city's weather becomes slightly warmer than previous months, contributing to a more enjoyable tropical ambiance. Sunshine hours increase slightly, bathing Salvador in beautiful tropical light. Despite these bright conditions, UV Index remains high warranting suitable skin protection.

Temperature

The transition from August to September in Salvador sees average high-temperatures adjusting to a still warm 27.2°C (81°F), from a not significantly different 26.4°C (79.5°F). The temperature lowers to an average of 21.7°C (71.1°F) during September nights.

Heat index

For most parts of September, the heat index is calculated to be a tropical 30°C (86°F). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

The average relative humidity in September is 79.6%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 102mm (4.02") of precipitation.

Sea temperature

In September, the average sea temperature in Salvador, Brazil, is 25.8°C (78.4°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Salvador, Brazil, the average length of the day in September is 12h and 2min.
On the first day of the month, sunrise is at 05:37 and sunset at 17:29. On the last day of September, sunrise is at 05:17 and sunset at 17:30 -03.

Sunshine

In Salvador, the average sunshine in September is 7h.

UV index

The months with the highest UV index in Salvador are January through March, September through December, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: During September, 12 as the daily maximum UV index converts into the following advice:
Practice every essential safety step. People with fair skin could receive burns in fewer than 5 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Regularly apply and reapply a broad-spectrum sunscreen with a minimum SPF 30 every two hours, or straight after swimming or an outdoor activity. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.