September weather forecastButare, Rwanda
September
Weather in September
In September, the weather undergoes a dramatic shift. Rainfall increases significantly, marking the beginning of the second wet season with 79mm (3.11") of rain spread across 20.7 days. The maximum gust speed drops slightly, indicating calmer winds. Despite these changes, the recorded temperature remains within the usual range for the year. Consequently, the city transitions back to a wet pattern after the relatively dry period.Temperature
September's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 24.3°C (75.7°F) from August's 24.8°C (76.6°F). September sees the temperature falling to a mean low of 15.3°C (59.5°F).Humidity
In September, the average relative humidity is 65%.Rainfall
In Butare, during September, the rain falls for 20.7 days and regularly aggregates up to 79mm (3.11") of precipitation. In Butare, during the entire year, the rain falls for 272.8 days and collects up to 1185mm (46.65") of precipitation.Daylight
The average length of the day in September is 12h and 6min.On the first day of September, sunrise is at 05:58 and sunset at 18:02. On the last day of the month, sunrise is at 05:46 and sunset at 17:54 CAT.
Sunshine
The month with the most sunshine is September, with an average of 10.3h of sunshine.UV index
January through December, with an average maximum UV index of 5, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Butare, Rwanda
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is May (21.3°C).
- Average low temperature in September: 15.3°C
The month with the highest average low temperature is October (15.5°C).
The coldest month (with the lowest average low temperature) is June (12.8°C).
Average pressure in September
Butare, Rwanda
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is June (1016mbar).
The month with the lowest atmospheric pressure is February (1012.7mbar).
Average wind speed in September
Butare, Rwanda
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is July (7.3km/h).
The calmest month (with the lowest average wind speed) is December (4.4km/h).
Average humidity in September
Butare, Rwanda
- Average humidity in September: 65%
The month with the highest relative humidity is May (88%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Butare, Rwanda
- Average rainfall in September: 79mm
The wettest month (with the highest rainfall) is October (158mm).
The driest month (with the least rainfall) is July (17mm).
Average rainfall days in September
Butare, Rwanda
- Average rainfall days in September: 20.7 days
The month with the highest number of rainy days is December (28.9 days).
The month with the least rainy days is July (10.5 days).
Average daylight in September /
Average sunshine in September
Butare, Rwanda
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is September (Average sunshine: 10h and 18min).
The month with the least sunshine is May (Average sunshine: 7h and 48min).
Average sunshine days in September
Butare, Rwanda
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is July (19.3 days).
The month with the least sunshine days is December (1.8 days).
Average UV index in September
Butare, Rwanda
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Butare, Rwanda
- Average cloud cover in September: 27
The months with the most cloud cover are April and May (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Butare, Rwanda
- Average visibility in September: 10km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are April and May (7km).
