September weather forecastFagamalo, Samoa
September
Weather in September
September showcases a shift in Fagamalo, Samoa’s climatological characteristics from those observed in August. The month's weather points to marginally lower wind speeds and heralds the onset of the area's wetter season. The declining trend in wind speed, averaging 25.5km/h (15.8mph), indicates calming conditions. Additionally, the town moves into longer daylight periods, announcing the approach of the wetter months. Moving ahead, October forecasts increasing precipitation levels.Temperature
August and September are the coldest months, with an average high-temperature of 26.3°C (79.3°F).Humidity
The most humid month is September, with an average relative humidity of 82%.Rainfall
The month with the least rainfall is September, when the rain falls for 21 days and typically collects 102mm (4.02") of precipitation.Sea temperature
The months with the coldest seawater are June through October, with an average sea temperature of 28°C (82.4°F).Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.
Daylight
The average length of the day in September 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
In Fagamalo, 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. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, a regular UV index of 7 translates into these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat. Watch out! Sand and water enhance the UV exposure you receive.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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 sea temperature in September
Fagamalo, Samoa
- Average sea temperature in September: 28°C
The best months for swimming (with the highest average sea temperature) are January, February, March, April, May, November and December (29°C).
The coldest months (with the lowest average sea temperature) are June, July, August, September and October (28°C).
Average daylight in September /
Average sunshine in September
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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
Fagamalo, 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).
