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September Weather in Sapapali'i, Samoa

Last updated: August 31, 2025

In Sapapali'i, Samoa, the average temperature in September is a comfortable 25°C (77°F), with minimums dipping to 23°C (73°F) and maximums peaking at 28°C (82°F). However, be prepared for some moisture, as precipitation amounts reach 129 mm (5.1 in) over 24 days, contributing to an average humidity of 83%.

September Temperature in Sapapali'i

In September in Sapapali'i, the average temperature is 25°C (77°F). Maximum can reach 28°C (82°F) and minimum can be as low as 23°C (73°F). This mild and pleasant climate makes it an ideal time to explore and enjoy all that Sapapali'i has to offer.

September Weather in Sapapali'i: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sapapali'i, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sapapali'i, September typically has an average temperature of 25°C (77°F), with highs reaching up to 28°C (82°F) and lows dropping to around 23°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878787877777677777778
Data source: Temperature data for Sapapali'i generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sapapali'i

In Sapapali'i in September, the precipitation amount is 129 mm (5.1 in) over the course of 24 days.

September Precipitation Trends in Sapapali'i

The chart displays monthly precipitation patterns in Sapapali'i, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sapapali'i, September typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec343527190230188134196128129216287432
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sapapali'i

In Sapapali'i in September humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

September Average Humidity in Sapapali'i

This chart illustrates the average monthly humidity levels in Sapapali'i, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sapapali'i is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%78%78%79%80%81%84%84%82%79%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sapapali'i

In Sapapali'i in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sapapali'i, you can check here.

Maximum UV Index Levels in Sapapali'i for September

The chart shows the monthly maximum UV Index (UVI) for Sapapali'i in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sapapali'i typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16161613119101214151515
Data source: Sapapali'i September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Sapapali'i Compares to Other Months

Weather in Sapapali'i varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sapapali'i, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sapapali'i, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)343 mm (13.5 inches)78%extreme
February Weather25°C (78°F)527 mm (20.8 inches)78%extreme
March Weather26°C (79°F)190 mm (7.5 inches)78%extreme
April Weather26°C (79°F)230 mm (9.1 inches)78%extreme
May Weather26°C (78°F)188 mm (7.4 inches)79%extreme
June Weather25°C (78°F)134 mm (5.3 inches)80%very high
July Weather25°C (77°F)196 mm (7.7 inches)81%very high
August Weather25°C (77°F)128 mm (5.0 inches)84%extreme
September Weather25°C (77°F)129 mm (5.1 inches)83%extreme
October Weather25°C (77°F)216 mm (8.5 inches)82%extreme
November Weather25°C (78°F)287 mm (11.3 inches)79%extreme
December Weather25°C (78°F)432 mm (17.0 inches)79%extreme

Compare Sapapali'i's Climate with Cities Worldwide