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 arrival of September brings an average high-temperature of a still moderately hot 28.2°C (82.8°F), subtly diverging from August's 27.7°C (81.9°F). September in Keji sees the temperature falling to a mean low of 21.3°C (70.3°F).Heat index
For September, the heat index is estimated at a tropical 33°C (91.4°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 80%.Rainfall
In September, in Keji, the rain falls for 18.3 days. Throughout September, 55mm (2.17") of precipitation is accumulated. In Keji, during the entire year, the rain falls for 296.5 days and collects up to 1844mm (72.6") of precipitation.Daylight
In Keji, the average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:39 and sunset at 17:38. On the last day of September, in Keji, sunrise is at 05:23 and sunset at 17:33 WIB.
Sunshine
In Keji, the average sunshine in September is 8.6h.UV index
The months with the lowest UV index are January, April through September, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 6 in September translates into these instructions:
Shield from overexposure. Defense against sun-related harm is required. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Keji during September?
What is the least humid month in Keji?
What is the average humidity in September in Keji?
How much does it rain in Keji in September?
How many hours of daylight does Keji have in September?
When are sunrise and sunset in September in Keji?
How many hours of sunshine does Keji have in September?
When is the lowest UV index in Keji?
What is the UV index reading in September in Keji?
Average temperature in September
Keji, Indonesia
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is October (29.1°C).
The month with the lowest average high temperature is July (27.3°C).
- Average low temperature in September: 21.3°C
The months with the highest average low temperature are January and November (23.3°C).
The coldest month (with the lowest average low temperature) is August (21°C).
Average pressure in September
Keji, Indonesia
- Average pressure in September: 1011.8mbar
The months with the highest atmospheric pressure are August and September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in September
Keji, Indonesia
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is August (11.5km/h).
The calmest month (with the lowest average wind speed) is April (6.9km/h).
Average humidity in September
Keji, Indonesia
- Average humidity in September: 80%
The months with the highest relative humidity are May and June (84%).
The months with the lowest relative humidity are September and October (80%).
Average rainfall in September
Keji, Indonesia
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is March (242mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Keji, Indonesia
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is August (13.6 days).
Average daylight in September /
Average sunshine in September
Keji, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).
Average sunshine days in September
Keji, Indonesia
- Average sunshine days in September: 7.3 days
The month with the most sunshine days is August (12.3 days).
The month with the least sunshine days is March (0.5 days).
Average UV index in September
Keji, Indonesia
- Average UV index in September: 6
The months with the highest UV index are February, March and October (UV index 7).
The months with the lowest UV index are January, April, May, June, July, August, September, November and December (UV index 6).
Average cloud cover in September
Keji, Indonesia
- Average cloud cover in September: 42
The months with the most cloud cover are January and December (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 38).
Average visibility in September
Keji, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
