Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The start of September witnesses a high-temperature average of a still warm 23.5°C (74.3°F), equal to that of August. Kiumu registers a steady nighttime temperature averaging a comfortable 18.5°C (65.3°F) throughout September.Humidity
In Kiumu, the average relative humidity in September is 78%.Rainfall
In Kiumu, in September, it is raining for 25.7 days, with typically 112mm (4.41") of accumulated precipitation. In Kiumu, during the entire year, the rain falls for 260.6 days and collects up to 1441mm (56.73") of precipitation.Daylight
The average length of the day in September is 12h and 7min.On the first day of the month, sunrise is at 06:46 and sunset at 18:53. On the last day of September, sunrise is at 06:36 and sunset at 18:43 EAT.
Sunshine
In Kiumu, Uganda, the average sunshine in September is 9.1h.UV index
April through September and November, with an average maximum UV index of 5, are months with the lowest UV index in Kiumu, Uganda. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Kiumu in September?
What is the average humidity in September in Kiumu?
How many days does it rain in September in Kiumu?
How many hours of daylight does Kiumu have in September?
When is the sunrise / sunset in September in Kiumu?
How long on average sun shines in September in Kiumu?
What are the months with the lowest UV index in Kiumu?
What is the UV index intensity in September in Kiumu?
Average temperature in September
Kiumu, Uganda
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is February (24.9°C).
The month with the lowest average high temperature is May (22.8°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is February (19.6°C).
The coldest month (with the lowest average low temperature) is July (18°C).
Average pressure in September
Kiumu, Uganda
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is June (1013.7mbar).
The month with the lowest atmospheric pressure is February (1009.8mbar).
Average wind speed in September
Kiumu, Uganda
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is May (10.5km/h).
The calmest month (with the lowest average wind speed) is December (7.7km/h).
Average humidity in September
Kiumu, Uganda
- Average humidity in September: 78%
The months with the highest relative humidity are May and November (82%).
The months with the lowest relative humidity are January, February and July (74%).
Average rainfall in September
Kiumu, Uganda
- Average rainfall in September: 112mm
The wettest month (with the highest rainfall) is November (210mm).
The driest month (with the least rainfall) is July (39mm).
Average rainfall days in September
Kiumu, Uganda
- Average rainfall days in September: 25.7 days
The month with the highest number of rainy days is November (28.5 days).
The month with the least rainy days is July (15.2 days).
Average daylight in September /
Average sunshine in September
Kiumu, Uganda
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 6min).
The months with the shortest days are February and October (Average daylight: 12h and 6min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is January (Average sunshine: 9h and 24min).
The month with the least sunshine is May (Average sunshine: 8h and 12min).
Average sunshine days in September
Kiumu, Uganda
- Average sunshine days in September: 2.2 days
The month with the most sunshine days is July (12.8 days).
The month with the least sunshine days is November (0.9 days).
Average UV index in September
Kiumu, Uganda
- Average UV index in September: 5
The months with the highest UV index are January, February, March, October and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September and November (UV index 5).
Average cloud cover in September
Kiumu, Uganda
- Average cloud cover in September: 26
The month with the most cloud cover is May (Cloud cover 38).
The months with the least cloud cover are January and February (Cloud cover 20).
Average visibility in September
Kiumu, Uganda
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).
