Last updated: August 21, 2025
September in Nadi, Fiji, welcomes visitors with a warm tropical climate, as the maximum temperature soars to a delightful 30°C (87°F), while the average temperature holds steady at a comfortable 24°C (76°F). With minimum temperatures dipping to 17°C (63°F), the evenings can offer a refreshing respite. However, travelers should prepare for some wet days, as the region experiences about 70 mm (2.7 in) of rainfall spread across 10 days, leading to a humidity level of 76%. Despite the rain, the lush landscapes and vibrant scenery during this month make Nadi a stunning destination for those seeking both adventure and relaxation.
In September, Nadi, Fiji experiences a harmonious blend of warmth and crispness, with temperatures gradually climbing as the season shifts. The minimum temperature hovers around 17°C (63°F), offering a refreshing start to the day, while afternoons warm up to an average of 24°C (76°F), making it ideal for beach outings and exploration. With a maximum of 30°C (87°F), visitors can bask in the tropical sun, just before the weather begins to transition into the warmer months of October and November. Compared to the cooler preceding months of June and July, September serves as a delightful bridge, inviting travelers to relish in the burgeoning warmth without the intensity of peak summer heat.
In September, Nadi, Fiji experiences a noticeable uptick in precipitation, with 70 mm (2.7 in) of rain falling over 10 days. This modest increase follows the drier months of July and August, where rainfall was minimal at 51 mm and 57 mm, respectively. While September marks a shift toward the wetter season, the rainfall is significantly lower than the peak months of February and March, which can see over 360 mm. As the region transitions into October, the average precipitation doubles, reaching 142 mm, indicating the impending end of the dry spell and the return of more frequent rain as the wet season approaches. This gradual rise in precipitation highlights the dynamic weather patterns experienced in Nadi as the year progresses.
In September, Nadi, Fiji experiences a humidity level of 76%, reflecting a slight dip from the more humid months leading up to it. This decrease in humidity follows a trend observed in the mid-year months, where humidity reaches its peak in May at 82%. As the dry season progresses, conditions begin to mellow, creating a comfortable atmosphere just before the humidity rises again for the warmer months ahead. The fluctuating levels—with highs in April and May and lows in June and August—underscore the tropical climate's distinctive rhythm, making Nadi an inviting destination for those who appreciate a balance of warmth and comfort.
In September, Nadi, Fiji experiences a UV Index of 13, placing it in the extreme exposure category, which means a burn can occur in just 10 minutes without protection. This slight increase from the August index of 11 reflects a consistent trend of high UV levels during the transition from winter to spring in the Southern Hemisphere. The extreme UV ratings seen from January to April reemerge as the year progresses, reminding outdoor enthusiasts to take necessary precautions. As the sun's intensity ramps up again in the months ahead, planning sun safety becomes essential, reinforcing the importance of staying informed. For more details, check out the Nadi UV Index.
UV Risk Categories
As September rolls in, Nadi, Fiji embraces a radiant shift in daylight, boasting 290 hours of sunshine—an inviting prelude to its increasingly sunny months. This trend showcases a gradual ascent from the bright days of summer, peaking in December with an impressive 302 hours. September's golden rays perfectly capture the essence of Fiji, as the sun-kissed days tantalize visitors with warm weather and spectacular vistas. The monthly increase in sunshine hours from previous months highlights not only the allure of autumn in the tropics but also the consistent warmth that makes Nadi an unforgettable paradise for sun-seekers and adventurers alike.
In Nadi, Fiji, September marks a notable transition in the weather patterns, offering a 45% chance of sunny days that keeps outdoor enthusiasts hopeful. This figure reflects a gradual decline from the peak of sunshine experienced in July and August, where the probabilities soared to around 59% and 53%, respectively. After the long, wet season, September's sun invites visitors to explore and enjoy the vibrant landscapes, while signaling the onset of drier months ahead. As the year progresses into October, the likelihood of clear skies holds steady at 45%, maintaining a delightful balance of warmth and sunshine as fall approaches in this tropical paradise.
As September rolls into Nadi, Fiji, the daylight duration settles at a comfortable 11 hours, continuing the trend established since June. This month marks the transition into the latter part of the year, where daylight slowly begins to increase again, paving the way for October's 12-hour days. Notably, the year starts off with longer days in January, peaking at 13 hours, before gradually tapering off to 11 hours from April through September. With the sun dipping earlier as the days shorten, September invites a cozy ambiance while hinting at the brighter daylight that awaits in the coming months.
As September arrives in Nadi, Fiji, the winds soften slightly, averaging 2.3 m/s (5 mph), consistent with the gentle breezes that grace the region during this transitional month. Following the slightly stronger gusts of August, where wind speeds reached 2.9 m/s (7 mph), September maintains a tranquil atmosphere, ideal for leisurely beach days and outdoor activities. This gentle wind pattern reflects a broader trend observed from earlier in the year, where months like January through June exhibit a steady range between 1.6 m/s and 2.6 m/s. As the year progresses into October, we can anticipate a further slight dip to 2.2 m/s (5 mph), emphasizing the calming rhythm of Fiji's weather as it eases into the warmer months ahead.
Weather in Nadi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nadi, focusing on differences in temperature, rainfall, humidity, and UV levels.
September weather is typically warm and pleasant, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 30°C (87°F). While it enjoys relatively moderate precipitation of 70 mm (2.7 in) over about 10 days, the humidity sits at a comfortable 76%. In contrast, January brings warmer temperatures, with a minimum of 21°C (71°F) and a maximum reaching 32°C (90°F). However, it is also the wettest month, receiving 254 mm (10.0 in) of rainfall over 21 days, coupled with slightly higher humidity at 78%. For more details on January weather, check out Nadi weather in January.
In comparing the weather between September and February, we see notable differences in temperature and precipitation. September typically enjoys a milder climate with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 30°C (87°F), alongside 70 mm (2.7 in) of precipitation over about 10 days. In contrast, February is warmer, with temperatures ranging from a minimum of 22°C (71°F) to a maximum of 32°C (89°F), but it is significantly wetter, experiencing 344 mm (13.5 in) of rain across 24 days. Despite higher humidity levels in both months, February tends to be more humid at 78%, compared to September's 76%. For more detailed information, you can check Nadi weather in February.
September and March present distinct weather patterns. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 30°C (87°F), with an average temperature of 24°C (76°F) and relatively moderate precipitation of 70 mm (2.7 in) over about 10 days. The humidity sits at 76%, offering a warm and somewhat comfortable climate. In contrast, March experiences slightly higher temperatures, ranging from a minimum of 22°C (71°F) to a maximum of 31°C (88°F), with an average of 26°C (79°F). However, it is much wetter, with 367 mm (14.5 in) of rain over 27 days, accompanied by a slightly higher humidity level at 79%. For more details on March weather, you can check Nadi weather in March.
When comparing the weather in September and April, several key differences emerge. In April, temperatures range from a minimum of 20°C (69°F) to a maximum of 31°C (87°F), with an average of 26°C (79°F), making it generally warmer than September, which has a minimum of 17°C (63°F) and a maximum of 30°C (87°F). April also experiences significantly higher rainfall, with 259 mm (10.2 in) over 20 days, compared to September's 70 mm (2.7 in) spread across 10 days. Additionally, humidity levels are slightly elevated in April at 80%, versus September's 76%. For more detailed information, check out Nadi weather in April.
September and May exhibit similar temperature ranges, with September experiencing a minimum temperature of 17°C (63°F) and an average of 24°C (76°F), while May starts at a slightly warmer minimum of 19°C (67°F) and averages 25°C (77°F). Both months share a maximum temperature of 30°C (87°F) and 31°C (87°F) respectively. However, May typically sees higher precipitation levels at 108 mm (4.3 in) over 8 days, compared to September's 70 mm (2.7 in) spread across 10 days. Additionally, the humidity is slightly higher in May at 82%, compared to 76% in September. For more detailed weather information in May, visit Nadi weather in May.
September and June share similar average temperatures, both hovering around 24°C (76°F), but there are notable differences in their weather patterns. September typically has a slightly wider temperature range, with minimums of 17°C (63°F) and maximums reaching up to 30°C (87°F), while June starts a bit warmer with minimums of 19°C (66°F) and maximums reaching 29°C (85°F). In terms of precipitation, September experiences about 70 mm (2.7 in) over approximately 10 days, whereas June sees slightly higher rainfall of 79 mm (3.1 in) over 7 days, indicating a wetter month despite fewer rainy days. Humidity levels remain comparable, with September at 76% and June at 75%. For a more detailed look at June weather, check out Nadi weather in June.
September and July experience quite similar temperatures, with September showing a slight increase in the minimum and maximum temperatures. September has a minimum of 17°C (63°F) and a maximum of 30°C (87°F), while July starts with a minimum of 16°C (62°F) and reaches the same maximum. Both months average around 24°C (75°F-76°F), but September tends to be wetter, with 70 mm (2.7 in) of rainfall over 10 days, compared to July's 51 mm (2.0 in) over just 6 days. Humidity levels are relatively high in both months, with September at 76% and July slightly higher at 78%. For more details on weather conditions in July, you can visit Nadi weather in July.
In comparison to August, September experiences slightly warmer temperatures, with a minimum of 17°C (63°F) and an average of 24°C (76°F), while August's minimum is 16°C (60°F) with the same average. Both months share a maximum temperature of 30°C (86°F in August and 87°F in September), making the latter just a bit warmer overall. However, September sees more precipitation, totaling 70 mm (2.7 in) over 10 days, compared to August's 57 mm (2.2 in) over 5 days. Interestingly, humidity levels remain consistent at 76% in both months. For a detailed look at August weather conditions, check out Nadi weather in August.
September and October present a gradual transition in weather patterns. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 30°C (87°F), with an average of 24°C (76°F). Precipitation is moderate, with 70 mm (2.7 in) falling over about 10 days, while humidity sits at 76%. In contrast, October offers slightly warmer temperatures, with a minimum of 19°C (67°F) and an average of 25°C (78°F), peaking at 31°C (87°F). However, it also brings increased rainfall, with 142 mm (5.6 in) recorded over 18 days, contributing to higher humidity levels at 79%. For more detailed insights on October weather, check out Nadi weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 17°C (63°F) to a maximum of 30°C (87°F), with an average of 24°C (76°F). The month sees around 70 mm (2.7 in) of precipitation over approximately 10 days, accompanied by a humidity level of 76%. In contrast, November brings slightly warmer weather with temperatures ranging from a minimum of 19°C (66°F) to a maximum of 32°C (89°F), averaging 26°C (78°F). However, November is marked by significantly increased rainfall, with 196 mm (7.7 in) of precipitation over about 20 days and a humidity level of 78%. For more detailed information, check out Nadi weather in November.
September and December exhibit notable differences in weather patterns. September tends to be milder, with average temperatures ranging from a minimum of 17°C (63°F) to a maximum of 30°C (87°F) and a relatively moderate humidity of 76%. However, it does experience about 70 mm (2.7 in) of precipitation over approximately 10 days. In contrast, December is warmer, with temperatures ranging from a minimum of 21°C (70°F) to a maximum of 32°C (90°F) and a slight increase in humidity to 80%. December is considerably wetter as well, with around 282 mm (11.1 in) of rain spread over 23 days, making it a much wetter month overall. For more specific details about the weather in December, you can refer to Nadi weather in December.
As September unfolds in Nadi, the weather begins to transition into a more comfortable climate, offering a welcoming reprieve from the cooler winter months. With average temperatures hovering around 24°C (76°F), visitors can expect pleasantly warm days, contrasting with the cooler nights that dip to about 17°C (63°F). While September does experience some rainfall—averaging 70 mm over about 10 days—this is significantly less than the months that follow. The humidity is relatively high at 76%, yet it complements the tropical atmosphere, making outdoor activities enjoyable. For a deeper dive into the overall climate trends of this beautiful region, check out the detailed insights at Nadi Climate.