Last updated: August 31, 2025
In September, Singapore experiences warm and humid conditions, with an average temperature around 27°C (82°F). Daily maximums reach up to 29°C (85°F), while nights remain pleasantly mild at a minimum of 25°C (77°F). Residents and visitors should prepare for frequent rain, as the city sees 189 mm (7.4 in) of precipitation over 22 days, contributing to the tropical climate. With an average humidity level of 84%, this month embodies the quintessential Singaporean experience, marked by its vibrant atmosphere and lush greenery.
In Singapore, September marks a transition in temperatures that remains characteristically warm and humid. With a minimum of 25°C (77°F) and a maximum of 29°C (85°F), the weather offers a slight dip from the summer peak but maintains a comfortable average of 27°C (82°F). This consistency in warmth is a hallmark of Singapore's tropical climate, where one can expect only minor fluctuations throughout the year. As the monsoon season approaches, gentle breezes can provide a refreshing contrast, making this month ideal for exploring the vibrant city. Overall, September encapsulates the essence of tropical living, inviting locals and visitors alike to enjoy the warm days and balmy evenings.
In September, Singapore experiences a notable shift in its wet weather as the month brings an average precipitation of 189 mm (7.4 in) over 22 days of rainfall. This marks a slight increase compared to the preceding months of July and August, highlighting the onset of the wetter season as the cityReadies for the heavier downpours of October and November. With 19 days of rain recorded in March and 26 in April, these early months demonstrate a gradual build-up, leading to September's steady rainfall. As the dry spell of February gives way to the increasingly humid and wet conditions of the latter part of the year, September serves as a transitional period, setting the stage for the intense precipitation that typically characterizes Singapore’s monsoon season.
In September, humidity in Singapore registers at a comfortable 84%, continuing the trend of relatively stable levels observed during the preceding months. After peaking at 88% in January, the humidity steadily declined through the mid-year, with the lowest point at 83% in May through July. The return to slightly higher figures in August and September indicates a subtle increase as the city transitions from the dry season. As the year progresses towards the cooler months of October and November, humidity levels remain consistently high, reflecting Singapore's tropical climate where moisture is an omnipresent characteristic. This pattern underscores the idea that while variations exist, Singapore's humidity often hovers around the mid-80s, creating a muggy yet vibrant atmosphere year-round.
In September, Singapore experiences a UV Index of 14, maintaining its status within the extreme exposure category with a burn time of just 10 minutes. This month continues the trend of high UV readings observed throughout most of the year, particularly from January to April when levels peaked at 15. Following a slight drop in June and July, September sees a rebound, reinforcing the need for sun protection as the intensity remains high. With a consistent emphasis on safety and awareness, sun-seekers should remain vigilant even as the seasons transition. For more detailed information, check out Singapore UV Index.
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As we transition into September in Singapore, the city basks in 293 hours of sunshine, continuing its trend of abundant daylight throughout the year. Following the vibrant summer months of July and August, which boasted impressive sun totals of 311 and 315 hours respectively, September provides a nice balance, slightly tapering off yet still promising plenty of bright days. This month successfully maintains a strong average among the year, following the peak summer performance while remaining superior to the cooler, cloudier weeks seen in November and January. With such favorable sunlight, September emerges as a splendid time for both locals and tourists to explore the wonders of this dynamic city under the warm embrace of the tropical sun.
In Singapore, September emerges as a standout month for sun seekers, boasting a 26% chance of sunny weather—the highest of the year. This seasonal uplift follows a trend of increasing sun chances from the typically overcast months of July and August, which linger around the 19% and 11% marks, respectively. As the sweltering heat begins to ease, September offers a delightful transition, where the likelihood of clear skies not only brightens daily routines but also beckons outdoor enthusiasts to embrace the tropical charm of the Lion City.
In Singapore, the enchanting rhythm of daylight dances consistently throughout the year, with the average daylight duration remaining a steady 12 hours for each month, including September. This remarkable consistency not only highlights Singapore's equatorial climate but also creates a perfect backdrop for outdoor adventures and vibrant city life. Whether basking in the sun's rays during the day or enjoying the vivid twilight, residents and visitors alike can relish in the predictable sunshine that the month of September graciously offers, allowing for endless possibilities regardless of the time of year.
As September rolls into Singapore, the average wind speed gently settles at 3.8 m/s (9 mph), reflecting a trend of diminishing breezes that began in the earlier months. Following the robust winds of January and February, which averaged around 5.8 m/s and 5.6 m/s, the island's breeze has gradually softened, reaching its low point in April with just 2.6 m/s. Although September experiences a slight uptick compared to the preceding months of March and April, the overall pattern indicates a tranquil descent into the calmer winds of the later year, particularly as October and November are expected to drop further to 3.4 m/s and 3.1 m/s, respectively. This gradual ebb in wind speed not only shapes Singapore's balmy climate but also invites a serene vibe, making it an ideal backdrop for leisurely outdoor activities.
Weather in Singapore varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Singapore, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September and January, both months exhibit similar average temperatures, hovering around 27°C (81°F). However, September tends to be slightly cooler at its maximum, reaching 29°C (85°F), while January peaks at 30°C (86°F). Precipitation levels are notable in both months, with September receiving 189 mm (7.4 in) over 22 days, compared to January’s 172 mm (6.8 in) across 16 days. Additionally, January experiences a marginally higher humidity level of 88% versus September's 84%. For more detailed information, you can check Singapore weather in January.
September and February in Singapore showcase relatively similar temperatures, with September having a minimum of 25°C and an average of 27°C, while February records a slightly lower minimum of 24°C but maintains the same average temperature. However, February tends to be drier with only 68 mm of rainfall across 11 days, compared to September's much wetter conditions, which see 189 mm of precipitation over 22 days. Humidity levels are also quite comparable, with February at 85% and September slightly lower at 84%. For more detailed insights, check the link: Singapore weather in February.
In comparing the weather of September and March, both months exhibit warm temperatures, with minimums around 25°C (77°F) and average temperatures that remain fairly consistent at 27°C (81°F in March compared to 82°F in September). However, March tends to be slightly drier, receiving 141 mm (5.6 in) of precipitation over 19 days, while September is notably wetter with 189 mm (7.4 in) across 22 days. Humidity levels are also comparable, standing at 84% in September and slightly higher at 86% in March. For more information on March weather patterns, you can refer to Singapore weather in March.
In comparing the weather conditions of September and April, both months exhibit relatively high temperatures, with September averaging around 27°C (82°F) and April slightly warmer at 28°C (82°F). Notably, April tends to have higher maximum temperatures, reaching up to 30°C (86°F) compared to September's maximum of 29°C (85°F). However, April also experiences more precipitation, with 230 mm (9.0 in) over 26 days, whereas September sees 189 mm (7.4 in) across 22 days. Despite these differences, both months share a consistent humidity level of 84%. For more detailed insights on April's weather, you can visit Singapore weather in April.
In comparing the weather between September and May, both months showcase warm temperatures typical of a tropical climate. September has a minimum temperature of 25°C (77°F) and an average of 27°C (82°F), reaching a maximum of 29°C (85°F). In contrast, May offers slightly higher temperatures, with a minimum of 25°C (78°F), an average of 28°C (83°F), and a peak of 30°C (86°F). Precipitation levels also vary, with September receiving 189 mm (7.4 in) over 22 days, while May is wetter, accumulating 264 mm (10.4 in) across 29 days. Humidity remains consistently high in both months, with September at 84% and May slightly lower at 83%. For more details on May's weather, visit Singapore weather in May.
When comparing the weather of September and June, we find that both months display warm temperatures, with September averaging 27°C (82°F) and June slightly warmer at 28°C (82°F). However, June tends to bring more precipitation, with a total of 262 mm (10.3 in) over 26 days, compared to September's 189 mm (7.4 in) over 22 days. The humidity levels are quite similar, with September at 84% and June slightly lower at 83%. For more detailed information, you can check Singapore weather in June.
In comparing the weather of September and July, both months experience similar temperature ranges, with July having an average temperature of 28°C (82°F) and September slightly lower at 27°C (81°F). July tends to be marginally more humid at 83%, compared to September's 84%. Precipitation is comparable as well, with July receiving 198 mm (7.8 in) over 23 days, while September sees 189 mm (7.4 in) across 22 days. For more detailed information, you can check the Singapore weather in July. Overall, both months exhibit warm temperatures and considerable rainfall, making them quite similar in climatic conditions.
In September, the weather remains quite warm with average temperatures similar to August, ranging from a minimum of 25°C (77°F) to a maximum of 29°C (85°F). However, September experiences slightly higher precipitation at 189 mm (7.4 in) over 22 days, compared to August's 181 mm (7.1 in) over 24 days. Humidity levels are also comparable, with September averaging 84% versus August's 85%. Overall, both months maintain a tropical climate, but September tends to be a bit wetter. For more detailed insights, you can check Singapore weather in August.
September and October in Singapore exhibit similar temperature ranges, with both months having minimum temperatures of around 25°C (77°F) and average temperatures hovering around 27°C (82°F). However, October tends to be slightly warmer with a maximum temperature reaching 30°C (87°F). While September experiences 189 mm (7.4 in) of precipitation over 22 days, October sees an increase in rainfall, totaling 216 mm (8.5 in) over 25 days. Despite these differences, the humidity remains constant at 84% for both months, creating a consistently tropical climate. For more detailed information, you can refer to Singapore weather in October.
September and November in Singapore experience similar average temperatures, with both months seeing a minimum of 25°C (77°F) and an average of around 27°C (81°F). However, November is notably wetter, with total precipitation reaching 356 mm (14.0 in) over 27 days compared to September's 189 mm (7.4 in) across 22 days. Both months maintain a consistent humidity level of 84%, but the increased rainfall in November can lead to a more overcast and damp atmosphere. For more detailed weather information, you can check out Singapore weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 27°C (82°F), peaking at 29°C (85°F). The month experiences considerable precipitation, totaling 189 mm (7.4 in) over 22 days, contributing to a high humidity level of 84%. In contrast, December sees slightly warmer temperatures, with a maximum reaching 30°C (86°F) and average conditions similar to September at 27°C (80°F). However, December has even higher precipitation, accumulating 221 mm (8.7 in) over 23 days and a humidity increase to 87%. For a detailed overview of December's climate, visit Singapore weather in December.
As September rolls in, Singapore experiences a warm and humid climate, characterized by average temperatures lingering around 27°C (82°F), making it one of the more consistent months. However, the high levels of humidity at 84%, coupled with frequent rain—about 22 days leading to significant precipitation of 189 mm (7.4 in)—distinguish this month from the drier periods earlier in the year. Despite the tropical downpours, the warmth remains a constant companion, inviting both locals and tourists to adapt to the vibrant yet dripping atmosphere. For a deeper dive into the weather nuances throughout the year, explore Singapore Climate.