September weather forecastSale'aula, Samoa
September
Weather in September
In September, weather conditions in Sale'aula transition gradually from the dry spell experienced in August. A slight increase in rainfall is noted, subtly marking the end of dry months. The wind speed drops off a bit, corresponding to the rainfall changes. This month records the longest daylight hours, significantly improving visibility. September is harmonious, with weather variables hinting at changes, all muting into a beauty synonymous with early autumn in Sale'aula, Samoa.Temperature
August and September are known as Sale'aula's coldest months, with an average high-temperature of 26.3°C (79.3°F).Humidity
September is the most humid month in Sale'aula, with an average relative humidity of 82%.Rainfall
September is the month with the least rainfall. Rain falls for 21 days and accumulates 102mm (4.02") of precipitation.Daylight
In September, the average length of the day is 12h and 2min.On the first day of September, sunrise is at 06:33 and sunset at 18:25. On the last day of the month, sunrise is at 06:12 and sunset at 18:25 +13.
Sunshine
The average sunshine in September is 7.9h.UV index
January through December, with an average maximum UV index of 7, 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 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sale'aula, Samoa
- Average high temperature in September: 26.3°C
The warmest month (with the highest average high temperature) is April (27.5°C).
The months with the lowest average high temperature are August and September (26.3°C).
- Average low temperature in September: 25.2°C
The month with the highest average low temperature is April (26.4°C).
The coldest months (with the lowest average low temperature) are July, August and September (25.2°C).
Average pressure in September
Sale'aula, Samoa
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is September (1012.2mbar).
The month with the lowest atmospheric pressure is January (1007.4mbar).
Average wind speed in September
Sale'aula, Samoa
- Average wind speed in September: 25.5km/h
The windiest month (with the highest average wind speed) is July (26.7km/h).
The calmest month (with the lowest average wind speed) is March (16.5km/h).
Average humidity in September
Sale'aula, Samoa
- Average humidity in September: 82%
The month with the highest relative humidity is September (82%).
The months with the lowest relative humidity are March and April (79%).
Average rainfall in September
Sale'aula, Samoa
- Average rainfall in September: 102mm
The wettest month (with the highest rainfall) is January (459mm).
The driest month (with the least rainfall) is September (102mm).
Average rainfall days in September
Sale'aula, Samoa
- Average rainfall days in September: 21 days
The month with the highest number of rainy days is March (29.3 days).
The month with the least rainy days is September (21 days).
Average daylight in September /
Average sunshine in September
Sale'aula, 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 54min
The month with the most sunshine is March (Average sunshine: 8h and 6min).
The months with the least sunshine are January and February (Average sunshine: 7h and 6min).
Average sunshine days in September
Sale'aula, Samoa
- Average sunshine days in September: 6.3 days
The month with the most sunshine days is August (6.7 days).
The month with the least sunshine days is February (0.8 days).
Average UV index in September
Sale'aula, 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
Sale'aula, Samoa
- Average cloud cover in September: 44
The months with the most cloud cover are January and February (Cloud cover 51).
The month with the least cloud cover is March (Cloud cover 43).
Average visibility in September
Sale'aula, Samoa
- 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).
