September weather forecastMahamba, Swaziland

September

Weather in September

September marks a transition to milder temperatures in the city of Mahamba. The increase in cloud cover signals the conjectural existence of impending monsoons. An increase in daylight hours returns, illuminating the city for longer periods. Throughout the month of September, rainfall averages about 11mm (0.43"), suggesting the end of the dry spell. The wind speed starts to pick up, following a rising trend throughout this period.

Temperature

September welcomes an average high-temperature of a warm 25°C (77°F), not much different from the preceding month. Nighttime temperatures throughout September register a significant deviation from the day's highs, averaging at a cool 11.1°C (52°F).

Humidity

The average relative humidity in September is 57%.

Rainfall

In Mahamba, in September, it is raining for 6.7 days, with typically 11mm (0.43") of accumulated precipitation. Throughout the year, there are 145.6 rainfall days, and 538mm (21.18") of precipitation is accumulated.

Daylight

In Mahamba, the average length of the day in September is 11h and 56min.
On the first day of the month, sunrise is at 06:08 and sunset at 17:42. On the last day of September, in Mahamba, sunrise is at 05:35 and sunset at 17:55 SAST.

Sunshine

In Mahamba, Swaziland, the average sunshine in September is 8.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 5 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, the average high-temperature and low-temperature are 25°C (77°F) and 11.1°C (52°F) respectively.

In Mahamba, the average relative humidity in September is 57%.

In Mahamba, in September, during 6.7 rainfall days, 11mm (0.43") of precipitation is typically accumulated.

In September, the average day length is 11h and 56min.

In September, on the first day of the month, sunrise is at 06:08 and sunset at 17:42. On the last day of the month, sunrise is at 05:35 and sunset at 17:55 SAST.

The average sunshine duration in September is 8.2h.

In September, the average daily maximum UV index in Mahamba, Swaziland, is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

22.3°C

25°C

24.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10km/h

10.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

26.1

21.4

16.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Mahamba, Swaziland

Average high temperature in September: 25°C

The warmest month (with the highest average high temperature) is December (26.3°C).
The month with the lowest average high temperature is July (19.4°C).

Average low temperature in September: 11.1°C

The months with the highest average low temperature are January and December (15.2°C).
The coldest month (with the lowest average low temperature) is July (5.6°C).

Average pressure in September
Mahamba, Swaziland

Average pressure in September: 1019.3mbar

The month with the highest atmospheric pressure is July (1024.3mbar).
The months with the lowest atmospheric pressure are January and December (1014.4mbar).

Average wind speed in September
Mahamba, Swaziland

Average wind speed in September: 9.4km/h

The windiest months (with the highest average wind speed) are June and September (9.4km/h).
The calmest month (with the lowest average wind speed) is March (6.7km/h).

Average humidity in September
Mahamba, Swaziland

Average humidity in September: 57%

The months with the highest relative humidity are January, February and March (82%).
The month with the lowest relative humidity is August (54%).

Average rainfall in September
Mahamba, Swaziland

Average rainfall in September: 11mm

The wettest month (with the highest rainfall) is January (105mm).
The driest month (with the least rainfall) is July (3mm).

Average rainfall days in September
Mahamba, Swaziland

Average rainfall days in September: 6.7 days

The month with the highest number of rainy days is January (23 days).
The month with the least rainy days is June (2.6 days).

Average daylight in September /
Average sunshine in September
Mahamba, Swaziland

Average daylight in September: 11h and 54min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).

Average sunshine in September: 8h and 12min

The month with the most sunshine is October (Average sunshine: 9h and 30min).
The month with the least sunshine is April (Average sunshine: 6h and 36min).