September Weather in Matavai, Samoa

Last updated: August 31, 2025

In Matavai, Samoa, September brings a warm tropical climate characterized by a maximum temperature of 28°C (83°F) and an average of 26°C (78°F), ensuring pleasant days for visitors. Evenings are mild with temperatures dipping to a minimum of 23°C (74°F). However, this month is also marked by considerable rainfall, with 174 mm (6.9 in) of precipitation spread over 25 days, resulting in a high humidity level of 84%. Travelers should be prepared for occasional showers amidst the warmth, making September a month rich in lush landscapes and vibrant island life.

September Temperature in Matavai

September in Matavai, Samoa, presents a delightful transition in weather as the island continues to bask in tropical warmth. With minimum temperatures around 23°C (74°F), an average of 26°C (78°F), and a maximum reaching 28°C (83°F), the month maintains a comfortable climate that is both inviting and enjoyable. This stability in temperature shows a consistent trend throughout the year, where the averages remain relatively unchanged, hovering around the mid-20s Celsius. September marks the end of winter, leading into more warmth in October, with temperatures slowly inching higher, but still offering a refreshing escape from the heat. As summer approaches, visitors to Matavai can look forward to idyllic weather perfect for exploring the stunning natural beauty of Samoa.

September Weather in Matavai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Matavai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Matavai, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979807979787878787979
Data source: Temperature data for Matavai generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Matavai

September in Matavai, Samoa, marks a transition as the region experiences moderate precipitation of 174 mm (6.9 in), falling over 25 days. This amount is indicative of the wetter months that follow, yet it is relatively light compared to the heavier downpours experienced earlier in the year, particularly in January and February. The rain begins to taper off from the peak summer months, setting the stage for the approaching October rainfall of 308 mm (12.1 in). This pattern illustrates a distinct shift in the monsoonal climate, where late-summer showers gradually give way to more intense tropical downpours, reinforcing the importance of September as a pivotal month in Matavai's annual precipitation cycle.

September Precipitation Trends in Matavai

The chart displays monthly precipitation patterns in Matavai, 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 Matavai, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec318465230243202189240158174308316394
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Matavai

In September, Matavai, Samoa, experiences a noticeable rise in humidity, reaching 84% as the island transitions deeper into the tropical climate. This increase marks a trend of elevating moisture levels that begins subtly in the earlier months and escalates toward October, where it peaks at 85%. The gradual climb from 80% in June through August underscores the island’s warming atmosphere, complementing the lush environment but also hinting at the impending rainier season. With humidity consistently between 79% and 84% from March to September, visitors can expect a humid embrace, making the island's tropical allure both inviting and lush.

September Average Humidity in Matavai

This chart illustrates the average monthly humidity levels in Matavai, 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 Matavai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%79%79%80%80%81%83%84%85%82%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Matavai

In September, Matavai, Samoa, experiences a notable UV Index of 14, classifying the exposure category as extreme with a burn time of just 10 minutes. This high level of UV radiation follows a pattern seen throughout the year, with the UV Index peaking in the earlier months. While it dips slightly in June and July to 9, September's reading indicates a return to heightened levels, reminiscent of previous months like January and February. As the year progresses, caution remains paramount for sun exposure, particularly in the intense conditions of September. For more insights on UV levels and safety recommendations, visit Matavai UV Index.

Maximum UV Index Levels in Matavai for September

The chart shows the monthly maximum UV Index (UVI) for Matavai 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 Matavai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1616151311991214151515
Data source: Matavai 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.

September Sunshine in Matavai

September in Matavai, Samoa, shines brightly with 304 hours of sunshine, marking a continuation of the region's glorious weather traditions as summer draws to a close. Following a steady ascent from the previous months, the days in September embrace warmth and brightness, hinting at the approaching peak of October, which boasts an impressive 309 hours of sunlight. This month stands out, as it represents a remarkable transition from the mid-year clouds toward a vibrant, sun-filled atmosphere that is emblematic of the Samoan backdrop. Overall, the gradual rise in sunshine hours from January's 230 to September's 304 signifies a clear trend of increasing luminosity, enticing visitors to experience the beauty of Samoa during this sun-kissed season.

Monthly Sunshine Duration in Matavai: September Highlighted

The September sunshine duration represents the total number of hours Matavai experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec230h221h307h275h279h269h273h293h304h309h297h290h
Data source: Matavai September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Matavai During September

In September, Matavai, Samoa enjoys a notable increase in sunny weather, with a 68% chance of sunshine, making it one of the sunniest months of the year. This trend follows a steady climb from the cooler, cloudier months of winter; July shines with 62% sun exposure, while August dips slightly to 43%. The transition into spring clearly brings a fresh burst of sunshine, suggesting that September is an ideal time for outdoor activities and exploration. With more sunny days ahead, visitors can bask in the vibrant beauty of the island, marking it as a delightful time to experience Matavai's tropical allure.

Percentage of Sunny Days in September in Matavai

The chart illustrates the percentage of sunny days in Matavai throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Matavai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec32%18%27%41%51%45%62%43%68%40%37%33%
Data source: Matavai September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Matavai in September

In Matavai, Samoa, September marks a delightful transition back to longer sunlight, with the day stretching to a revitalizing 12 hours. This shift is part of a broader trend where the island enjoys a steady 12-hour daylight from January through March and then again from October to December. Interestingly, the months from April to August experience a slight reduction to 11 hours of daylight, creating a subtle rhythm throughout the year. As September rolls in, the return to those ample daylight hours invigorates the landscape and invites both residents and visitors to bask in the island's natural beauty under the sun's warm embrace.

Average Daylight Hours in Matavai for September

The chart illustrates the variation in daylight duration in Matavai throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 49m12h 31m12h 8m11h 45m11h 26m11h 17m11h 22m11h 39m12h 1m12h 24m12h 45m12h 55m
Data source: Matavai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Matavai

As summer gracefully transitions into autumn in Matavai, Samoa, September embraces a pleasant wind, with speeds averaging 4.7 m/s (10 mph). This month showcases a slight uptick in breeziness compared to the calmer months of April and May, where wind speeds dipped to their lowest. Following a noteworthy surge in July, which boasted winds of 5.5 m/s (12 mph), September marks a refreshing return to breezy conditions, reminiscent of the summer’s earlier vibrancy. Unlike the gentler whispers of earlier months, September's winds dance through the palm trees, hinting at the shifting seasons ahead while maintaining a comfortable respite for those in search of adventure and relaxation alike.

Average September Wind Speed in Matavai

The chart displays monthly wind speed patterns in Matavai, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.13.12.93.63.95.54.54.7 m/s4.73.53.5
Data source: Matavai September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Matavai Compares to Other Months

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

In comparing the weather of September and January, both months exhibit similar average temperatures, hovering around 26°C (78°F) to 26°C (80°F). However, January typically has slightly higher maximum temperatures, peaking at 29°C (85°F) compared to September's 28°C (83°F). Precipitation is notably greater in January, with 318 mm (12.5 in) falling over 25 days, which is significantly more than September’s 174 mm (6.9 in) across the same number of days. Interestingly, while both months maintain high humidity levels, January's humidity is marginally lower at 80%, compared to September's 84%. For a more detailed look at January weather, you can visit Matavai weather in January.

September and February share similar average temperatures, both hovering around 26°C (78°F), but February tends to be slightly warmer with maximum temperatures reaching up to 30°C (86°F). In terms of precipitation, February is notably wetter, receiving 465 mm (18.3 in) over 27 days compared to September's 174 mm (6.9 in) across 25 days. Despite the increased rainfall in February, the humidity is slightly lower at 79% compared to a more humid 84% in September. For more details about February weather, you can visit Matavai weather in February.

When comparing the weather in September and March, both months exhibit similar temperature ranges, with September having a minimum temperature of 23°C (74°F) and a maximum of 28°C (83°F), while March sees slightly warmer conditions, maxing out at 29°C (85°F). However, March experiences more substantial rainfall, averaging 230 mm (9.1 in) over 29 days, compared to September's 174 mm (6.9 in) across 25 days. Humidity levels are also noteworthy; September is more humid at 84% compared to March's 79%. For a detailed look at the weather specifics in March, you can check Matavai weather in March.

In September, the weather boasts a minimum temperature of 23°C (74°F) and averages around 26°C (78°F), with a maximum of 28°C (83°F). The month experiences considerable rainfall, tallying up to 174 mm (6.9 in) over 25 days, accompanied by high humidity levels averaging 84%. In contrast, April typically sees slightly warmer conditions, with minimum temperatures of 24°C (76°F), an average of 26°C (80°F), and a peak of 30°C (86°F). However, it also brings more rainfall, with 243 mm (9.6 in) of precipitation spread throughout 26 days, while humidity is a touch lower at 79%. These characteristics make both months quite distinct in their climatic features, with April generally warmer and wetter than September. For more detailed information, you can refer to Matavai weather in April.

When comparing the weather in September and May, we observe that both months have similar average temperatures, hovering around 26°C (79°F). However, May tends to be slightly warmer, with a maximum temperature reaching 29°C (84°F) compared to September's 28°C (83°F). While both months experience considerable rainfall, May has a higher total precipitation of 202 mm (8.0 in) over 28 days, compared to September’s 174 mm (6.9 in) across 25 days. Additionally, September is a bit more humid, with humidity levels at 84%, whereas May has a humidity of 80%. For more detailed information on weather conditions in May, you can visit Matavai weather in May.

In September, the weather is characterized by a temperature range that remains consistent with June, with minimums around 23°C (74°F) and averages of 26°C (78°F). However, the maximum temperature slightly drops to 28°C (83°F) compared to June's 29°C (84°F). Both months experience similar precipitation levels, with September receiving 174 mm (6.9 in) and June slightly more at 189 mm (7.4 in), and both have rainfall on approximately 25 days. Humidity in September is a bit higher at 84%, compared to June's 80%. For a detailed comparison of conditions in June, you can check Matavai weather in June.

In comparing the weather of September and July, we find that both months share similar temperature ranges, with average highs reaching 28°C (83°F) and lows around 22-23°C (72-74°F). However, July tends to have slightly higher precipitation, totaling 240 mm (9.4 in) over 27 days, compared to September's 174 mm (6.9 in) over 25 days. Additionally, July exhibits a marginally lower humidity level at 81%, while September's humidity rises to 84%. For more detailed information about July weather, you can visit Matavai weather in July.

In comparing the weather between September and August, we see that both months feature similar temperature ranges, with September having slightly higher average temperatures at 26°C (78°F) compared to August's 25°C (77°F). Precipitation is notably higher in September, with 174 mm (6.9 in) falling across 25 days, while August sees 158 mm (6.2 in) over 24 days. Humidity levels are also comparable, with September at 84% and August at 83%. For more detailed information, you can refer to Matavai weather in August.

In September, the weather features a minimum temperature of 23°C (74°F) and an average of 26°C (78°F), with a maximum reaching 28°C (83°F). The month experiences significant rainfall, totaling 174 mm (6.9 in) over 25 days, coupled with a humidity level of 84%.

As October arrives, the temperatures remain consistent with a minimum of 23°C (74°F) and an average of 26°C (78°F), but the maximum temperature sees a slight increase to 29°C (84°F). However, October brings considerably more rain, with total precipitation rising to 308 mm (12.1 in) over 28 days, and humidity levels increase marginally to 85%. For more insights into October weather, you can visit Matavai weather in October.

September and November present similar overall temperatures, with both months averaging around 26°C (78°F) to 79°F, but there are notable differences in precipitation and humidity. In September, the weather experiences less rainfall, totaling 174 mm (6.9 in) over 25 days, while November sees a substantial increase to 316 mm (12.4 in) spanning 27 days. Despite the rise in precipitation, the humidity levels remain relatively high in both months, with September at 84% and November slightly lower at 82%. For a more detailed look at November's weather, you can visit Matavai weather in November.

In comparing the weather between September and December, it is evident that both months share similar average temperatures, with September ranging from a minimum of 23°C (74°F) to a maximum of 28°C (83°F) and December showing slightly warmer temperatures, reaching up to 29°C (85°F). However, December experiences significantly higher precipitation, totaling 394 mm (15.5 in) over 29 days, compared to September's 174 mm (6.9 in) over 25 days. Humidity levels remain relatively consistent, with September at 84% and December at 82%. This suggests that while the temperatures are similar, December is notably wetter, creating a more humid atmosphere. For more detailed insights into December's weather patterns, refer to Matavai weather in December.

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Conclusion: What to Expect From September Weather in Matavai

As September rolls in, Matavai experiences a unique transition in its weather patterns. With temperatures consistently hovering around 28°C, this month feels warmer compared to the cooler seasons, yet it also brings increased humidity, averaging a notable 84%. While the average temperatures remain welcoming, September is particularly characterized by its significant rainfall, with frequent precipitation days contributing to a total of 174 mm throughout the month. This dynamic blend of warmth and moisture sets September apart from other months, making it an interesting time to explore the lush landscapes of Matavai. For a deeper dive into the region's climate trends, visit Matavai Climate.