September weather forecastUlutogia, Samoa
September
Weather in September
September marks a shift towards pleasant weather in Ulutogia, Samoa, with a notable increase in temperature. The rainfall, at 57mm (2.24"), is significantly lower than that in August, making it the driest month of the year. Despite the decrease in rainfall, the weather does not heat up drastically, maintaining a relatively stable atmospheric condition. The pleasant weather persists throughout the month, with the city basking in the splendors of comfortable temperature and decreased precipitation.Temperature
In Ulutogia, September is the month with the lowest recorded average temperatures, measuring a high of 27.3°C (81.1°F) and a low of 26.3°C (79.3°F).Heat index
The average heat index in September is evaluated at a tropical 30°C (86°F). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Observations indicate that the heat index values are for shady locations with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
June through September, with an average relative humidity of 78%, are the most humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 18.7 days and typically collects 57mm (2.24") of precipitation.Daylight
The average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 06:29 and sunset at 18:21. On the last day of September, sunrise is at 06:08 and sunset at 18:22 +13.
Sunshine
The average sunshine in September is 7.8h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete 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
Average temperature in September
Ulutogia, Samoa
- Average high temperature in September: 27.3°C
The warmest months (with the highest average high temperature) are March and April (28.7°C).
The month with the lowest average high temperature is September (27.3°C).
- Average low temperature in September: 26.3°C
The month with the highest average low temperature is January (27.6°C).
The coldest month (with the lowest average low temperature) is August (26°C).
Average pressure in September
Ulutogia, Samoa
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is September (1012.3mbar).
The month with the lowest atmospheric pressure is January (1007.5mbar).
Average wind speed in September
Ulutogia, Samoa
- Average wind speed in September: 23.2km/h
The windiest month (with the highest average wind speed) is July (24.7km/h).
The calmest month (with the lowest average wind speed) is March (14.8km/h).
Average humidity in September
Ulutogia, Samoa
- Average humidity in September: 78%
The months with the highest relative humidity are June, July, August and September (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Ulutogia, Samoa
- Average rainfall in September: 57mm
The wettest month (with the highest rainfall) is January (175mm).
The driest month (with the least rainfall) is September (57mm).
Average rainfall days in September
Ulutogia, Samoa
- Average rainfall days in September: 18.7 days
The month with the highest number of rainy days is April (22.7 days).
The month with the least rainy days is September (18.7 days).
Average daylight in September /
Average sunshine in September
Ulutogia, Samoa
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 18min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is March (Average sunshine: 8h and 42min).
The month with the least sunshine is July (Average sunshine: 7h and 18min).
Average sunshine days in September
Ulutogia, Samoa
- Average sunshine days in September: 3.6 days
The month with the most sunshine days is December (10.4 days).
The month with the least sunshine days is June (2.7 days).
Average UV index in September
Ulutogia, Samoa
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Ulutogia, Samoa
- Average cloud cover in September: 44
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is March (Cloud cover 38).
Average visibility in September
Ulutogia, Samoa
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
