September weather forecastSejeli, Tanzania
September
Weather in September
The first month of the spring, September, is a hot month in Sejeli, Tanzania, with an average temperature varying between 30.5°C (86.9°F) and 16.4°C (61.5°F).Temperature
September's arrival registers an average high-temperature of a hot 30.5°C (86.9°F), closely aligning with the temperature of the previous month. September nights bring a pronounced temperature shift, with averages hovering around a refreshing 16.4°C (61.5°F).Heat index
In September, the average heat index is evaluated at a tropical 32°C (89.6°F). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in September is 52%.Rainfall
June through September are months without rainfall.Daylight
In September, the average length of the day is 12h and 5min.On the first day of September, sunrise is at 06:34 and sunset at 18:34. On the last day of the month, sunrise is at 06:19 and sunset at 18:29 EAT.
Sunshine
The months with the most sunshine are August and September, with an average of 9.9h of sunshine.UV index
January through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sejeli, Tanzania
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is October (31.8°C).
The months with the lowest average high temperature are May and June (27.2°C).
- Average low temperature in September: 16.4°C
The month with the highest average low temperature is November (19.3°C).
The coldest month (with the lowest average low temperature) is July (13.9°C).
Average pressure in September
Sejeli, Tanzania
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.9mbar).
Average wind speed in September
Sejeli, Tanzania
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is October (12.1km/h).
The calmest month (with the lowest average wind speed) is January (5.3km/h).
Average humidity in September
Sejeli, Tanzania
- Average humidity in September: 52%
The months with the highest relative humidity are March and April (80%).
The month with the lowest relative humidity is October (51%).
Average rainfall in September
Sejeli, Tanzania
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is December (135mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).
Average rainfall days in September
Sejeli, Tanzania
- Average rainfall days in September: 0.5 days
The month with the highest number of rainy days is March (21.3 days).
The month with the least rainy days is August (0.2 days).
Average daylight in September /
Average sunshine in September
Sejeli, Tanzania
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 54min
The months with the most sunshine are August and September (Average sunshine: 9h and 54min).
The month with the least sunshine is April (Average sunshine: 8h and 6min).
Average sunshine days in September
Sejeli, Tanzania
- Average sunshine days in September: 29.7 days
The months with the most sunshine days are July and August (30.5 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in September
Sejeli, Tanzania
- Average UV index in September: 6
The month with the highest UV index is October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
Average cloud cover in September
Sejeli, Tanzania
- Average cloud cover in September: 14
The month with the most cloud cover is April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in September
Sejeli, Tanzania
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September, October, November and December (10km).
The months with the lowest visibility are February, March and April (8km).
