Last updated: August 31, 2025
Experience the enchanting September weather in Noumea, New Caledonia, where the climate strikes a delightful balance. With maximum temperatures reaching 26°C (78°F) and averaging 19°C (67°F), visitors can enjoy warm days amidst a scenic backdrop. Nights are pleasantly cool, dipping to a comfortable 14°C (58°F). While the month brings 38 mm (1.5 in) of rain spread over 8 days, the lush landscapes thrive under a humidity level of 74%. Ideal for both relaxation and adventure, September invites you to soak in the vibrant atmosphere of this exquisite tropical paradise.
As September rolls into Nouméa, New Caledonia, the temperatures begin to transition into a more moderate range, setting the stage for a pleasant spring ahead. With minimums around 14°C (58°F) and maximums reaching 26°C (78°F), days feel comfortably warm, encouraging outdoor adventures and leisurely strolls along the beautiful coastline. The average temperature settles at 19°C (67°F), making it an ideal time for exploring the island’s rich culture and stunning landscapes without the sweltering heat of summer. This month marks a gentle shift from the cooler winter, highlighting the region's tropical charm and inviting visitors to bask in its burgeoning warmth.
In September, Noumea experiences a notable decrease in precipitation, recording just 38 mm (1.5 in) over eight days. This marks a significant drop from the earlier months, particularly from the heavy rainfall seen in April and February, where the totals soared above 200 mm. With rainfall gradually tapering off as the dry season approaches, September serves as a transition month, hinted at by the minimal precipitation days compared to the wetter months preceding it. As October rolls in, there is a slight uptick to 81 mm (3.2 in) expected, indicating that while the wet season is on the wane, the balance between dry and rainy days keeps the climate lively and inviting.
As September arrives in Noumea, New Caledonia, the humidity begins to stabilize at 74%, a gentle rise from the drier months of July and August, which recorded 70% and 73% respectively. Following the more humid summer peak in January and February, where levels soared to 82% and 83%, the trends indicate a gradual decline through mid-year, reaching a low of 70% in July. However, September marks a shift towards elevated humidity once again, setting the stage for the warmer months ahead. This transitional period maintains a balance, offering a taste of the vibrant tropical climate as the region prepares for the returning humidity of late spring and summer.
In September, Noumea, New Caledonia, experiences a UV Index of 11, placing it firmly in the extreme exposure category. This slight uptick from August’s UV Index of 10 signals a return to intense sun, with a recommended burn time of only 10 minutes. Throughout the year, Noumea’s UV levels tend to remain high; particularly, the summer months from January to March show the most extreme conditions, where the UV Index reaches a staggering 16. In the cooler months from May to July, the UV Index dips slightly but remains a concern, emphasizing the need for sun safety during both summer and winter. Travelers and locals alike should stay informed and protected, especially during September’s blazing sun. For detailed insights and monthly updates, visit the Noumea UV Index.
UV Risk Categories
As the vibrant energies of September embrace Noumea, the city basks in an impressive 284 hours of sunshine, setting a delightful tone for the transition into spring. This month marks a notable resurgence from the cooler winter months, showcasing an uplifting trend as daylight hours begin to increase significantly. Following the variable sunshine of the last several months, September's light not only offers warmth but also hints at the approaching peak sunshine of late spring and summer, where October, November, and December will shine even brighter with over 300 hours each. This gradual climb in sunlit hours invites both locals and travelers to revel in the outdoors, making September a perfect time to explore the stunning landscapes and rich culture of New Caledonia.
In September, Noumea, New Caledonia, enjoys a 48% chance of sunny weather, marking a slight dip from the sunny peaks of the preceding months, particularly August's impressive 52%. This trend indicates a transition as the region moves away from the peak winter sun, yet it remains among the higher probabilities of sunshine throughout the year. Following a generally upward trajectory from the cooler months, the sunny likelihood during this time offers an inviting window for visitors and locals alike to bask in the pleasant late-winter warmth, before the likelihood shifts once again in October. As the year progresses, the chances of sunshine become more variable, but September retains a favorable allure, embodying the essence of idyllic springtime in the South Pacific.
As September rolls into Noumea, New Caledonia, residents can enjoy a comfortable 11 hours of daylight, mirroring the trend established in the preceding months of August and April. This slight hint of stability in daylight hours reflects the gradual transition from winter towards the vibrant spring and summer, leading into October with its promise of 12 hours of sun. The month of September acts as a gentle reminder of nature’s rhythm, showcasing a blend of lingering winter warmth while hinting at brighter days to come, as daylight steadily increases towards the year’s end. The ebb and flow of light in Noumea truly illustrates the island's enchanting seasonal dance.
As summer fades into autumn, September in Noumea, New Caledonia experiences a refreshing uptick in wind activity, with an average wind speed of 4.8 m/s (11 mph). This marks a noticeable shift from the calmer breezes of winter, where June recorded a low of 3.9 m/s (9 mph). As the seasons progress, winds generally gain strength from May onward, peaking in September before tapering off in October. This increase not only invigorates the coastal atmosphere but also sets the stage for diverse outdoor adventures, making it an ideal time for both locals and visitors to embrace the island's natural beauty. With summer on the horizon and the winds at their backs, the vibrant allure of Noumea becomes even more captivating as the days grow longer and warmer.
Weather in Noumea varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Noumea, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. September typically enjoys milder temperatures, with a minimum of 14°C (58°F) and an average of 19°C (67°F), peaking at a maximum of 26°C (78°F). In contrast, January is warmer, featuring a minimum of 20°C (68°F) and averaging at 24°C (76°F), reaching up to 29°C (84°F). While September experiences moderate rainfall of 38 mm (1.5 in) over about 8 days, January is markedly wetter, accumulating 127 mm (5.0 in) across 14 days. Moreover, humidity levels are higher in January at 82%, compared to September's 74%. For a detailed look at January's climate, visit Noumea weather in January.
In September, the weather is typically mild, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 26°C (78°F). The month experiences relatively low precipitation at 38 mm (1.5 in) over about 8 days, making it a pleasant time to enjoy outdoor activities, with humidity levels at 74%.
In contrast, February brings warmer temperatures, with averages ranging from 20°C (69°F) to highs of 29°C (85°F). However, it is also quite wet, with significant rainfall of 207 mm (8.1 in) spread across approximately 20 days, resulting in higher humidity at 83%. This wetter climate can create a lush environment but may also limit outdoor excursions. For more specific insights on February weather, you can explore Noumea weather in February.
September and March offer quite different weather experiences. In September, temperatures range from a mild 14°C (58°F) at night to a comfortable 26°C (78°F) during the day, with an average humidity of 74%. Precipitation is relatively low at 38 mm (1.5 in) over about 8 days, making it a drier month. In contrast, March sees higher temperatures, with a minimum of 20°C (69°F) and a maximum of 29°C (85°F), averaging 25°C (77°F). The month is also considerably wetter, receiving 170 mm (6.7 in) of rain over 19 days, and humidity increases to 82%. This significant difference in both temperature and rainfall makes March feel much more tropical. For a detailed overview, check out Noumea weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be milder, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 26°C (78°F) and an average of 19°C (67°F). In contrast, April has warmer temperatures, with a minimum of 18°C (65°F), an average of 23°C (74°F), and a maximum of 28°C (83°F). Additionally, April experiences significantly higher precipitation, with 209 mm (8.2 in) over 19 days, compared to September's 38 mm (1.5 in) across 8 days. The humidity in April also peaks at 82%, slightly higher than September's 74%. For more detailed information, you can check Noumea weather in April.
In comparing the weather between September and May, September typically experiences milder temperatures, with a range from a minimum of 14°C (58°F) to a maximum of 26°C (78°F) and an average of 19°C (67°F). In contrast, May sees slightly warmer conditions, starting at 17°C (63°F) and peaking at 27°C (80°F), resulting in an average temperature of 22°C (71°F). However, May also brings significantly more rainfall, with 120 mm (4.7 in) over 15 days compared to September's 38 mm (1.5 in) over 8 days. Both months have high humidity levels, but May is marginally higher at 78% compared to September's 74%. For more details on the weather in May, you can visit Noumea weather in May.
When comparing the weather in September and June, we see some subtle differences. In September, temperatures range from a minimum of 14°C (58°F) to a maximum of 26°C (78°F), with an average of 19°C (67°F). The month experiences about 38 mm (1.5 in) of precipitation over 8 days, with humidity levels at 74%. In contrast, June's temperatures are slightly warmer, with a minimum of 15°C (60°F) and an average of 20°C (68°F), while still capping at 26°C (80°F). June also sees higher precipitation, totaling 45 mm (1.8 in) across 9 days, but maintains a similar humidity level at 73%. For more details on the weather specifics of June, you can visit Noumea weather in June.
In comparing the weather of September and July, both months share similar temperature ranges, with September showcasing slightly warmer conditions—averaging 19°C (67°F) with a maximum of 26°C (78°F) compared to July's maximum of 24°C (75°F). Precipitation levels remain comparable, with September receiving 38 mm (1.5 in) over 8 days and July experiencing nearly the same amount at 39 mm (1.5 in) but over just 7 days. Interestingly, humidity is slightly higher in September at 74%, while July maintains a more comfortable level of 70%. For a detailed look at the July weather, you can check Noumea weather in July.
In comparing the weather of September and August, September offers slightly milder temperatures with a minimum of 14°C (58°F) and a maximum of 26°C (78°F), while August has a minimum of 15°C (58°F) and a maximum of 24°C (76°F). The average temperature in both months remains similar, hovering around 19°C (66°F to 67°F). However, September sees less precipitation at 38 mm (1.5 in) over 8 days, compared to August's 58 mm (2.3 in) over 6 days. Humidity levels are quite close, with September at 74% and August at 73%. For more detailed insights, you can check Noumea weather in August.
September and October present a notable transition in weather conditions. In September, the temperature ranges from a minimum of 14°C (58°F) to a maximum of 26°C (78°F), with an average of 19°C (67°F) and a total precipitation of 38 mm (1.5 in) over 8 days. Humidity during this month is relatively high at 74%.
In contrast, October brings slightly warmer weather with minimum temperatures around 17°C (62°F) and an average of 21°C (70°F), while still reaching a maximum of 26°C (80°F). However, October sees increased precipitation, totaling 81 mm (3.2 in) across 11 days, and a marginally higher humidity of 76%. For more details, you can check out Noumea weather in October.
In September, temperatures typically range from a minimum of 14°C (58°F) to a maximum of 26°C (78°F), with an average of 19°C (67°F). The month sees about 38 mm (1.5 inches) of precipitation over 8 days, and humidity hovers around 74%. In contrast, November enjoys slightly warmer temperatures, with a minimum of 17°C (64°F) and a maximum of 29°C (85°F), averaging at 22°C (72°F). However, November also experiences increased precipitation, totaling 51 mm (2.0 inches) over 9 days, and humidity rises to 82%. For more details on the weather during this month, check out Noumea weather in November.
In September, the weather is mild, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 26°C (78°F), and only 38 mm (1.5 in) of rainfall over about 8 days. The humidity is moderate at 74%, creating a comfortable atmosphere for outdoor activities. In contrast, December sees warmer temperatures, with a minimum of 19°C (67°F) and a maximum reaching up to 29°C (84°F). However, it also experiences heavier rainfall, totaling 140 mm (5.5 in) across 16 days, and higher humidity at 82%. For more detailed information, you can check Noumea weather in December.
As September rolls in, Noumea experiences a delightful transition in weather, marked by comfortable temperatures that trend towards milder averages. With maximums reaching around 26°C and a pleasant humidity of 74%, this month feels notably more refreshing compared to the hotter summer months that follow. While you may expect some occasional rain—around eight days in total—the overall precipitation is relatively low, making it ideal for outdoor exploration. If you’re looking for a time to visit when the climate is just right, September stands out as an excellent choice. For more detailed information, check out Noumea Climate.