September Weather in Ambalangoda, Sri Lanka

Last updated: March 19, 2025

In Ambalangoda, Sri Lanka, September brings a tropical climate characterized by average temperatures around 27°C (80°F), peaking at a warm 29°C (84°F) during the day and dipping to a comfortable 25°C (77°F) at night. This month is marked by high humidity levels of 82%, creating a muggy atmosphere that enhances the tropical vibe. Rainfall is significant, with an average precipitation of 272 mm (10.7 in) spread across 27 days, making it one of the wettest months of the year. Despite the frequent showers, this lush coastal town retains its charm, inviting visitors to experience its vibrant culture and stunning landscapes.

September Temperature in Ambalangoda

In September, Ambalangoda, Sri Lanka, offers a delightful consistency in its warm tropical climate. With minimum temperatures hovering around 25°C (77°F) and an average of 27°C (80°F), the weather is ideal for both relaxation and exploration. The maximum temperature gently peaks at 29°C (84°F), reflecting a pleasant warmth without the extremes often found in peak summer months. As the month progresses, this mellow warmth allows visitors to indulge in the breathtaking beaches and lush scenery that define this coastal gem. Overall, September continues the trend of mild temperatures typical for this region, making it a favorable time for travelers seeking both comfort and adventure.

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

The chart illustrates September temperature patterns in Ambalangoda, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec808081828281818080808080
Data source: Temperature data for Ambalangoda 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 Ambalangoda

September in Ambalangoda, Sri Lanka, brings a notable consistency in rainfall, with 272 mm (10.7 in) of precipitation over 27 days. This mirrors the rain received in August, creating a dynamic bridge between the peak monsoon months. The combination of extended rainy days and substantial precipitation indicates that September remains a vital period for the region's ecosystem. As the monsoon season approaches its conclusion, the wet conditions continue to nourish the lush landscapes, setting the stage for October's slightly increased rainfall of 298 mm (11.7 in). This pattern underscores a significant trend of persistent moisture during this time of year, highlighting both the challenges and beauty of the tropical climate.

September Precipitation Trends in Ambalangoda

The chart displays monthly precipitation patterns in Ambalangoda, 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.
JanFebMarAprMayJunJulAugSepOctNovDec605689142338305257272272298248160
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ambalangoda

September in Ambalangoda, Sri Lanka, experiences a high humidity level of 82%, which is consistent with the increasing trend observed in the preceding months. Following a gradual rise from 73% in February to a peak of 83% in August, September maintains a similar humidity to July and June, emphasizing the region's tropical climate. With only slight fluctuations in humidity from month to month, it becomes evident that the latter part of the year brings a sense of moisture-laden air, which is characteristic of the coastal environment. As the monsoon season approaches its peak, residents and visitors alike can expect a sticky ambience, making it essential to stay hydrated and cool during this humid month.

September Average Humidity in Ambalangoda

This chart illustrates the average monthly humidity levels in Ambalangoda, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%74%74%76%82%82%83%82%81%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ambalangoda

In September, Ambalangoda, Sri Lanka experiences a UV Index of 14, placing it firmly in the extreme exposure category with a burn time of just 10 minutes. This month continues the trend seen since April, with consistently high UV levels persisting through the peak of the year’s sun. The stable index of 14 in September mirrors the intensity of the preceding months, underlining the importance of sun protection during this time. As the year transitions into October, the UV Index slightly drops to 13, yet remains a reminder of the region's intense sunlight. For more detailed insights and safety recommendations, visit Ambalangoda UV Index.

Maximum UV Index Levels in Ambalangoda for September

The chart shows the monthly maximum UV Index (UVI) for Ambalangoda 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.
JanFebMarAprMayJunJulAugSepOctNovDec121414151412131414131110
Data source: Ambalangoda 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 Ambalangoda

In September, Ambalangoda continues to bask in warmth, with 308 hours of sunshine illuminating the vibrant coastal town. This month slightly dips from the summer peak, yet it remains well above the yearly average, reflecting a seasonal trend where sunshine hours gradually transition from the high of 332 hours in March to a more mellow warmth as the year progresses. As the rainy season approaches, the consistent hours of sunlight in September provide a perfect backdrop for enjoying the pristine beaches and rich cultural experiences before the clouds roll in. Overall, the sun-drenched days of September invite visitors to soak up the last waves of summer, making it a captivating time to explore the beauty of Sri Lanka.

Monthly Sunshine Duration in Ambalangoda: September Highlighted

The September sunshine duration represents the total number of hours Ambalangoda 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.
JanFebMarAprMayJunJulAugSepOctNovDec270h308h332h329h314h324h331h327h308h306h281h307h
Data source: Ambalangoda September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ambalangoda During September

In September, Ambalangoda, Sri Lanka experiences a moderate 21% chance of sunny weather, marking a slight uptick from the previous months, particularly August, which sees only an 8% likelihood of sunshine. This gradual increase suggests that as the month progresses, the weather begins to transition towards more favorable conditions, reminiscent of the sunnier days in February and April, where chances of sun peak at 46% and 45% respectively. However, it's important to note that the month still lags behind its counterparts in terms of sunshine, indicating that visitors should be prepared for occasional rain amid the hope for vivid blue skies. As the monsoon season begins to wane, September offers a tantalizing glimpse of the sunnier days to come in the months ahead, especially as October and November return to more temperate conditions with 18% and 17% chances of sunshine.

Percentage of Sunny Days in September in Ambalangoda

The chart illustrates the percentage of sunny days in Ambalangoda 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 Ambalangoda experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec18%46%32%45%17%23%17%8%21%18%17%49%
Data source: Ambalangoda September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ambalangoda in September

In September, Ambalangoda, Sri Lanka, enjoys a consistent 12 hours of daylight, aligning seamlessly with the trends seen throughout the preceding months of April to August. This stable duration of sunlight reflects the tropical climate’s predictable patterns as the region transitions from the vibrant summer months toward the gentle approach of autumn. Following September, daylight begins to taper off, with October seeing a reduction to 11 hours, marking the start of a gradual shift towards shorter days in the latter part of the year. Overall, September serves as a lovely midpoint, where the sunshine is plentiful, fostering a perfect backdrop for outdoor adventures and relaxation.

Average Daylight Hours in Ambalangoda for September

The chart illustrates the variation in daylight duration in Ambalangoda throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 47m11h 54m12h 4m12h 14m12h 23m12h 27m12h 25m12h 17m12h 7m11h 58m11h 49m11h 45m
Data source: Ambalangoda daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ambalangoda

In September, the winds in Ambalangoda, Sri Lanka maintain a brisk pace at an average of 5.6 m/s (12 mph), echoing the mild gusts experienced in August. This slight consistency suggests the transition from the vibrant summer months into the cooler autumn breezes. From May onward, the wind speeds gradually intensified, peaking in July at 6.4 m/s (14 mph), before tapering off slightly. As the year draws to a close, wind speeds begin to decline, hinting at the calmer days of October and November ahead. Although September offers a refreshing gust, it serves as a gentle reminder of the tranquil winds that will soon envelop the region.

Average September Wind Speed in Ambalangoda

The chart displays monthly wind speed patterns in Ambalangoda, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.62.12.94.85.86.45.65.6 m/s4.94.72.2
Data source: Ambalangoda September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ambalangoda Compares to Other Months

The weather in Ambalangoda changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Ambalangoda and find detailed weather information for every month.

In September, the weather is characterized by warmer temperatures and considerably higher humidity, with average temperatures hovering around 27°C (80°F) and maximums reaching up to 29°C (84°F). This month also sees substantial rainfall, with precipitation amounting to 272 mm (10.7 in) over 27 days. In contrast, January offers a slightly cooler experience, with minimum temperatures around 23°C (73°F) and maximums peaking at 30°C (87°F). The precipitation in January is significantly lower, totaling just 60 mm (2.4 in) across 10 days, and the humidity is a bit more comfortable at 77%. For more detailed information on the weather in January, you can visit Ambalangoda weather in January.

September and February present distinct weather patterns, with September characterized by higher humidity and more frequent rainfall. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), coupled with significant precipitation of 272 mm (10.7 in) over 27 days and an average humidity of 82%. In contrast, February boasts slightly warmer temperatures, reaching a high of 31°C (87°F) but with substantially less rain—only 56 mm (2.2 in) across 13 days and lower humidity at 73%. For more specifics on February weather, you can refer to Ambalangoda weather in February.

When comparing the weather in September and March, both months experience a similar average temperature of around 27°C (81°F), but March tends to have slightly higher maximum temperatures reaching up to 31°C (88°F) compared to September's max of 29°C (84°F). Humidity is also lower in March at 74%, while September's humidity is notably higher at 82%. Additionally, March has significantly less precipitation, with only 89 mm (3.5 in) across 18 days, whereas September sees a much wetter climate, receiving 272 mm (10.7 in) over 27 days. For more detailed information, you can check Ambalangoda weather in March.

September and April present notable differences in weather patterns. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), with an average of 27°C (80°F). This month experiences significant rainfall, accumulating 272 mm (10.7 in) over 27 days, accompanied by high humidity at 82%. In contrast, April features slightly warmer temperatures, with a minimum of 25°C (77°F) and a maximum reaching 31°C (87°F), averaging 28°C (82°F). Rainfall is considerably lower at 142 mm (5.6 in) over 24 days, and humidity is less intense at 74%. For further details, you can check Ambalangoda weather in April.

In September, the weather presents a warm and humid climate with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (84°F), averaging at 27°C (80°F). The month is characterized by significant rainfall, totaling 272 mm (10.7 in) over 27 days, and a high humidity level of 82%. In contrast, May experiences slightly higher temperatures, with a minimum of 25°C (78°F) and a maximum of 30°C (87°F), averaging 28°C (82°F). This month sees even more precipitation, reaching 338 mm (13.3 in) across 29 days, but with lower humidity at 76%. For a more detailed look at May's weather patterns, you can refer to Ambalangoda weather in May.

In comparing the weather of September and June, both months exhibit similar temperature patterns, with minimums around 25°C (77°F), average highs of 27°C (80°F to 82°F), and maximum temperatures peaking at 29°C (84°F to 85°F). However, June tends to be slightly wetter, receiving about 305 mm (12.0 in) of precipitation over 29 days, compared to September's 272 mm (10.7 in) over 27 days. Notably, the humidity remains constant at 82% for both months, contributing to the overall tropical feel. For more information on June's specific weather conditions in Ambalangoda, visit Ambalangoda weather in June.

In comparing the weather of September and July, both months display similar average temperatures, with a minimum of 25°C (77°F) and a maximum ranging from 29°C (84°F) in September to 29°C (85°F) in July. However, September experiences slightly more precipitation, totaling 272 mm (10.7 in) over 27 days, compared to July's 257 mm (10.1 in) over 28 days. Both months maintain a consistent humidity level of 82%, contributing to the warm and moist atmosphere typical of this region. For more detailed insights, you can refer to Ambalangoda weather in July.

In comparing the weather between September and August, both months exhibit similar temperature ranges, with minimums around 25°C (77°F), averages at 27°C (80°F), and maximums reaching 29°C (84°F). However, September experiences slightly higher humidity at 82% compared to August's 83%. Precipitation levels are also comparable, with September recording 272 mm (10.7 in) over 27 days, while August has the same total amount but over 28 days. For more detailed information, you can check Ambalangoda weather in August.

September and October exhibit similar temperature patterns, with both months maintaining a steady range from a minimum of 25°C (77°F) to a maximum of 29°C (84°F) and an average temperature of 27°C (80°F). However, October sees a slight increase in precipitation, totaling 298 mm (11.7 in) over 29 rainy days, compared to September's 272 mm (10.7 in) over 27 days. Despite the rain, October's humidity remains comparable at 81%, just slightly lower than September's 82%. For more details, you can check out Ambalangoda weather in October.

In comparing the weather of September and November, we see that both months have similar temperature averages, with September having a minimum temperature of 25°C (77°F) and November slightly lower at 24°C (75°F). Both months experience average highs of around 29°C (84°F in September and 85°F in November). However, September is noticeably wetter, with a total precipitation of 272 mm (10.7 in) over 27 days, compared to November's 248 mm (9.8 in) over 25 days. Additionally, humidity levels are slightly higher in September at 82% compared to November's 80%. For those interested in more detailed weather patterns for November, you can check out Ambalangoda weather in November.

In comparing the weather between September and December, we notice that both months have very similar average temperatures, with September exhibiting minimal temperatures of 25°C (77°F) and maximums reaching 29°C (84°F), while December shows a minor variation with similar minimum and average values but a slightly higher maximum of 29°C (85°F). However, September experiences significantly more rainfall, with a total of 272 mm (10.7 in) spread over 27 days, compared to December's 160 mm (6.3 in) over just 19 days. Humidity levels are also closely aligned, at 82% in September and 80% in December, making both months quite humid but with December offering slightly more comfortable conditions. For more details, you can check Ambalangoda weather in December.

Compare Ambalangoda's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ambalangoda

As September unfolds in Ambalangoda, the weather is characterized by a distinct blend of warmth and significant moisture, setting it apart from other months. With temperatures averaging a comfortable 27°C (80°F), residents and visitors experience a humid atmosphere with 82% humidity enveloping the region. However, the dramatic increase in rainfall, totaling 272 mm over nearly the entire month, shapes this period into one of the wettest times of the year, making September particularly lush and vibrant. For anyone looking to understand the broader climate fluctuations throughout the year, further insights can be found at Ambalangoda Climate.