September weather forecast
Fagamalo, Samoa

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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.

Frequently asked questions

What is the coldest month in Fagamalo?

August and September bring Fagamalo's average lowest temperatures, reaching a high of 26.3°C (79.3°F).

What are September temperatures?

In Fagamalo, 26.3°C (79.3°F) is the average high-temperature and 25.2°C (77.4°F) is the average low-temperature during September. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in May is estimated at 31°C (87.8°F).

What is the most humid month?

With an average relative humidity of 82%, September is the most humid month.

What is the average humidity in September?

In Fagamalo, the average relative humidity in September is 82%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 21 days and typically collects 102mm (4.02") of precipitation.

How much does it rain in September?

In Fagamalo, in September, during 21 rainfall days, 102mm (4.02") of precipitation is typically accumulated.

What are the months with the coldest sea water?

The months with the coldest seawater are June through October, with an average sea temperature of 28°C (82.4°F).

How warm is the water in September?

In September, the average sea temperature is 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September?

In Fagamalo, the average day length in September is 12h and 2min.

When is the sunrise / sunset in September?

In September, on the first day of the month, 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.

How many hours of sunshine does Fagamalo have in September?

In Fagamalo, the average sunshine duration in September is 7.9h.

What are the months with the highest UV index?

January through December, with an average maximum UV index of 7, are months with the highest UV index.

What are the months with the lowest UV index?

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index intensity in September?

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Fagamalo, Samoa

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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 5min

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 - 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 - 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 - 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 - 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).

Fagamalo, Samoa

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