September weather forecast
Mwanza, Malawi

September sees an uptick in temperatures with the highest reaching 31.5°C (88.7°F) and rainfall remaining consistently low at 3mm (0.12"). A significant improvement in visibility is observed, indicating clarity in the weather. Compared to August, September experiences increased daylight hours. The number of sunshine days continues to be robustly high and the UV index rises to 7, implying plenty of warm, sunny days. The level of cloud cover drops drastically, making the sky clearer.

Temperature

September in Mwanza signifies a subtle uplift in the average high-temperature, adjusting from a moderately hot 27.6°C (81.7°F) in August to a hot 31.5°C (88.7°F). September nights in Mwanza, Malawi, indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to a comfortable 18.5°C (65.3°F).

Heat index

In September, the average heat index is evaluated at a hot 32°C (89.6°F). With extended exposure and activity, one might feel exhausted and experience heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

The least humid month is September, with an average relative humidity of 44%.

Rainfall

The months with the least rainfall are August and September Rain falls for 2.8 days and accumulates 3mm (0.12") of rain.

Daylight

The average length of the day in September is 12h and 1min.
On the first day of September in Mwanza, sunrise is at 05:47 and sunset at 17:36. On the last day of the month, sunrise is at 05:24 and sunset at 17:38 CAT.

Sunshine

The months with the most sunshine are September and December, with an average of 9.7h of sunshine.

UV index

September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.