September weather forecast
Samoa

September in Samoa serves as a transitional period, marking the end of the dry season and the beginning of the gradual return to the wetter months. Rainfall starts to increase during this time, with totals typically ranging from 150mm (5.91") to 200mm (7.87"). Meanwhile, temperatures remain consistently warm, generally between 24°C (75.2°F) and 26°C (78.8°F).

As is common throughout the year, the capital city of Apia often experiences slightly cooler temperatures due to coastal breezes. However, this slight variation does not significantly impact the overall climate in September, which remains warm and mildly humid.

In comparison to August, September sees an increase in rainfall, signaling the start of the transition back to the wet season. The risk of extreme weather events, such as tropical cyclones, remains relatively low during September. Nonetheless, visitors should stay informed about local weather forecasts, as conditions can change rapidly.

Looking ahead to October, rainfall continues to increase as Samoa transitions more fully into its wet season. However, temperatures remain relatively stable, providing a warm climate that is gradually becoming more humid.

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• Apia - September »
  The months with the coldest seawater are August and September, with an average sea temperature of 27.9°C (82.2°F). June through September, with an average relative humidity of 78%, are most humid months in Apia, Samoa.
• Vaitele - September »
  August and September, with an average sea temperature of 27.9°C (82.2°F), are months with the coldest seawater in Vaitele. On the first day of September in Vaitele, sunrise is at 06:31 and sunset at 18:22.
• Vaiusu - September »
  The months with the coldest seawater in Vaiusu are August and September, with an average sea temperature of 27.9°C (82.2°F). In Vaiusu, in September, the average water temperature is 27.9°C (82.2°F).
• Leulumoega - September »
  August and September, with an average sea temperature of 27.9°C (82.2°F), are months with the coldest seawater in Leulumoega. On the last day of September, in Leulumoega sunrise is at 06:10 and sunset at 18:24 +13.
• Falefa - September »
  August and September, with an average sea temperature of 27.9°C (82.2°F), are months with the coldest seawater in Falefa, Samoa. The months with the highest humidity in Falefa are June through September, with an average relative humidity of 78%.
• Samatau - September »
  The month with the least rainfall in Samatau is September, when the rain falls for 18.7 days and typically collects 57mm (2.24") of precipitation. Temperature records in Samatau, Samoa, mark September as the coldest month, with highs averaging 27.3°C (81.1°F) and lows at 26.3°C (79.3°F).
• Satuiatua - September »
  The most humid month in Satuiatua, Samoa, is September, with an average relative humidity of 82%. The yearly lowest temperatures in Satuiatua occur in August and September, averaging a high-temperature of 26.3°C (79.3°F).
• Falealupo - September »
  The most humid month in Falealupo is September, with an average relative humidity of 82%. The most humid month in Falealupo is September, with an average relative humidity of 82%.
• Lalomanu - September »
  September, on average, is the coldest month in Lalomanu, Samoa, registering a high temperature of 27.3°C (81.1°F) and a low of 26.3°C (79.3°F). August and September, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater in Lalomanu.
• Salelologa - September »
  The month with the least rainfall in Salelologa, Samoa, is September, when the rain falls for 18.7 days and typically collects 57mm (2.24") of precipitation. June through September, with an average relative humidity of 78%, are most humid months in Salelologa, Samoa.
• Fagamalo - September »
  The month with the least rainfall in Fagamalo is September, when the rain falls for 21 days and typically collects 102mm (4.02") of precipitation. In Fagamalo, the coldest months are August and September, registering an average high-temperature of 26.3°C (79.3°F).
• Gataivai - September »
  On the last day of September, sunrise is at 06:12 and sunset at 18:25 +13. On the first day of September, sunrise is at 06:33 and sunset at 18:25.