Last updated: August 31, 2025
September in Nuku'alofa, Tonga is characterized by a warm tropical climate, where temperatures range from a pleasant 20°C (67°F) to a maximum of 25°C (78°F), providing a comfortable atmosphere for visitors. The average temperature hovers around 23°C (73°F), making it ideal for outdoor activities. However, expect frequent showers, as the month sees about 135 mm (5.3 in) of rainfall spread over 13 days, contributing to a humidity level of 78%. This time of year offers a vibrant, lush environment, perfect for those looking to experience the natural beauty of Tonga amidst occasional rain.
As September rolls into Nuku'alofa, Tonga, the temperatures begin to stabilize, offering a delightful escape from the heat of the preceding months. With minimums dipping to 20°C (67°F) and a comfortable average of 23°C (73°F), the island experiences a mild climate that's perfect for outdoor adventures. The maximum temperature hovers around 25°C (78°F), consistent with the cooler months of August and July, marking a transition as the region prepares for the warmer spring months ahead. This pattern signifies a gradual shift, highlighting how the Pacific island maintains relatively pleasant weather, making September an ideal time for travelers seeking warmth without the summer swelter.
In September, Nuku'alofa experiences a moderate increase in precipitation, recording 135 mm (5.3 in) across 13 days of rain. This marks a notable rise compared to the drier months of July and August, which see significantly lower totals of 113 mm and 83 mm respectively. The pattern suggests that as the region transitions towards the more humid months of October and November, the rainfall begins to pick up, remaining consistent in October with the same precipitation level. This seasonal shift highlights the dynamic climate of Tonga, where September acts as a bridge, paving the way for the wetter, more tropical weather ahead.
In September, Nuku'alofa experiences a moderate humidity level of 78%, marking a transition as the island moves from the cooler, drier months of June and July, which see humidity figures around 74-76%. This slight uptick is part of a broader trend where humidity levels gradually increase as the year progresses, peaking in January and December at 83%. Notably, September’s humidity aligns closely with the 82% seen in both February and November, showcasing a consistent pattern as the year cycles. As the island approaches the warmth of spring, residents can expect a comfortable yet noticeable return to the rich, tropical moisture characteristic of the region.
In September, Nuku'alofa, Tonga, experiences an UV Index of 11, categorized as extreme, which means that even brief exposure can lead to sunburn in just 10 minutes. This slight uptick from August's 10 emphasizes a return to peak UV levels as the region transitions towards summer. Notably, the months from November through January exhibit the highest intensity with a staggering UV Index of up to 16, while the late winter and early spring months enjoy relatively lower, yet still high, levels. It’s crucial for residents and visitors alike to stay vigilant about sun protection during this period. For more detailed insights on UV trends, visit Nuku'alofa UV Index.
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In September, Nuku'alofa basks in a delightful mix of sunshine, boasting 250 hours of sunlight that sets a vibrant stage for the month. This figure reflects a slight dip from the sunnier August but still showcases a robust amount of daylight, ensuring ample opportunities for outdoor adventures. As the transition into spring approaches, the sun-soaked days hint at the promise of the warmer, brighter months ahead. Notably, as the year progresses, the trend escalates dramatically, with the sun reaching its peak in the bustling months of November and December, making Nuku'alofa's climate a breathtaking draw year-round.
In September, Nuku'alofa enjoys a notable shift towards sunnier skies, with a 41% chance of sunshine—a trend that reflects an overall increase in clear days as the year progresses. Following the colder months, where brightness peaks in July at 45%, September maintains a healthy level of sunshine, close to August's 42%. This promising probability suggests that as spring approaches in Tonga, residents and visitors can look forward to more opportunities to bask in the sun, making it an ideal time for outdoor adventures and relaxation.
As September rolls into Nuku'alofa, Tonga, locals enjoy 11 hours of daylight, mirroring the gradually shortening days seen since May. The month stands as a transition point, where daylight remains steady before the inevitable return of longer hours in October. Notably, the trend shows a gradual decline from the peak 13 hours in January and November, while the summer months boast the best daylight. This rhythm of light not only marks the changing seasons but also influences the vibrant culture and activities in this beautiful Pacific locale.
In September, the winds in Nuku'alofa, Tonga, gently sway at an average speed of 6.3 m/s (14 mph), marking a slight decline from the summer breezes of August. This month typically transitions into the cooler season, reflective in the moderate winds that create a pleasant atmosphere. Comparing September’s winds to those of May, when they peak at 8.3 m/s (19 mph), it’s clear that the region experiences a rhythmic dance of breezes as the year progresses. Following September, the winds pick up again in October to 7.4 m/s (17 mph), suggesting an invigorating shift as the landscape prepares for the approaching summer months. In this harmonious fluctuation, September serves as a gentle reminder of nature's ceaseless cycles.
Weather in Nuku'alofa varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nuku'alofa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Nuku'alofa features milder temperatures, with a minimum of 20°C (67°F) and an average of 23°C (73°F), peaking at 25°C (78°F). The month experiences significant rainfall, with 135 mm (5.3 in) spread over 13 days, and humidity levels around 78%. In contrast, January sees warmer conditions, with minimum temperatures of 24°C (75°F), an average of 26°C (79°F), and highs reaching 28°C (83°F). Rainfall increases to 235 mm (9.2 in) over 17 days, accompanied by slightly higher humidity at 83%. For more detailed information, check Nuku'alofa weather in January.
In comparing the weather between September and February, September typically experiences milder temperatures, with an average of 23°C (73°F), while February sees warmer conditions, averaging around 26°C (80°F). Precipitation is notably higher in February, receiving 294 mm (11.6 in) over 20 days compared to September's 135 mm (5.3 in) across 13 days. Additionally, humidity levels show a slight increase from September's 78% to February's 82%, contributing to a more humid atmosphere. For more detailed insights, you can check Nuku'alofa weather in February.
In comparing the weather of September and March, we observe notable differences in both temperature and precipitation. September experiences milder temperatures, with a minimum of 20°C (67°F) and an average of 23°C (73°F), while March is warmer, peaking at a maximum of 28°C (83°F) with an average of 26°C (79°F). Precipitation is significantly higher in March, accumulating to 300 mm (11.8 in) over 20 days, compared to the 135 mm (5.3 in) over 13 days in September. Additionally, humidity levels are slightly elevated in March at 81%, compared to 78% in September. For a more detailed outlook, you can check Nuku'alofa weather in March.
In comparing the weather of September and April, it’s evident that April tends to be warmer and wetter. While September experiences average temperatures ranging from a minimum of 20°C (67°F) to a maximum of 25°C (78°F), April boasts higher averages, with minimums of 23°C (74°F) and maximums reaching 28°C (82°F). Moreover, April sees significantly more precipitation, totaling 238 mm (9.4 in) over 16 days, compared to September’s 135 mm (5.3 in) over 13 days. The humidity levels are also slightly higher in April at 82%, indicating a more tropical feel during that month. For more detailed insights, you can check Nuku'alofa weather in April.
When comparing the weather in September and May, both months exhibit warm temperatures, but May tends to be slightly warmer overall. In September, the temperatures range from a minimum of 20°C (67°F) to a maximum of 25°C (78°F) with an average of 23°C (73°F). In contrast, May sees a minimum of 21°C (70°F), an average of 25°C (76°F), and a maximum of 27°C (81°F). Precipitation is higher in May, with 196 mm (7.7 in) over 14 days, compared to September’s 135 mm (5.3 in) over 13 days. Additionally, humidity levels in May are slightly elevated at 81%, compared to 78% in September, making May feel a bit more muggy. For more details on May weather, you can visit Nuku'alofa weather in May.
In comparing the weather of September and June, both months exhibit similar minimum temperatures, averaging 20°C (67°F) to 20°C (69°F). However, June tends to be slightly warmer overall, with an average temperature of 24°C (75°F) compared to September's 23°C (73°F). The maximum temperatures are also slightly higher in June, reaching 26°C (79°F) versus 25°C (78°F) in September.
Precipitation levels reveal a notable difference, as September experiences significantly more rainfall at 135 mm (5.3 in) across 13 days, while June sees lower precipitation at 101 mm (4.0 in) over 11 days. Additionally, humidity in September is higher at 78%, compared to 74% in June, contributing to a more humid feel during the former month. For more details, you can check Nuku'alofa weather in June.
When comparing the weather in September and July, we see some similarities along with slight differences. Both months exhibit the same average temperature of 23°C (73°F), with minimums of 20°C (67°F) in September and 20°C (68°F) in July, and maximums reaching 25°C (78°F). However, September is slightly wetter, receiving 135 mm (5.3 in) of precipitation over 13 days, compared to July's 113 mm (4.4 in) over 11 days. Additionally, September has a marginally higher humidity level at 78%, compared to July's 76%. For more specific insights into July weather, you can visit Nuku'alofa weather in July.
In comparing the weather of September and August, we see similar temperature patterns, with both months having a minimum temperature of around 20°C (68°F) and a maximum reaching 25°C (78°F). However, September is slightly warmer on average at 23°C (73°F), compared to the 22°C (73°F) average in August. The most notable difference lies in precipitation, as September experiences considerably more rainfall, with 135 mm (5.3 in) over 13 days, while August sees only 83 mm (3.3 in) across 10 days. Additionally, September has a higher humidity level at 78%, compared to August's 76%. For more details, you can check Nuku'alofa weather in August.
In September, the weather features mild temperatures with a minimum of 20°C (67°F) and an average of 23°C (73°F), while the maximum reaches 25°C (78°F). The month experiences 135 mm (5.3 in) of precipitation over 13 days, with humidity levels at 78%. Moving into October, the temperature remains consistent with a minimum of 20°C (68°F), an average of 23°C (74°F), and a maximum still at 25°C (78°F). However, precipitation and frequency of rainy days remain the same at 135 mm (5.3 in) over 13 days, but humidity slightly increases to 81%. For more details on weather specifics during this month, visit Nuku'alofa weather in October.
In September, temperatures in Nuku'alofa range from a minimum of 20°C (67°F) to a maximum of 25°C (78°F), with an average temperature of 23°C (73°F). The month experiences significant rainfall, totaling 135 mm (5.3 in) over 13 days, coupled with a humidity level of 78%. In contrast, November brings slightly warmer conditions, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 27°C (82°F), averaging 24°C (76°F). Precipitation is lower in November, with 88 mm (3.5 in) over 12 days and a humidity level that rises to 82%. For more details, check out the Nuku'alofa weather in November.
September and December exhibit noticeable differences in weather conditions. In September, temperatures range from a minimum of 20°C (67°F) to a maximum of 25°C (78°F), with an average of 23°C (73°F). The month also experiences about 135 mm (5.3 in) of precipitation over 13 days, coupled with a humidity level of 78%. In contrast, December sees slightly higher temperatures, with a minimum of 22°C (73°F) and a maximum of 28°C (82°F), averaging at 25°C (78°F). Precipitation increases to 163 mm (6.4 in) over 17 days, and humidity rises to 83%. This shift highlights December as a warmer and wetter month compared to September. For more detailed information, you can check Nuku'alofa weather in December.
In September, Nuku'alofa experiences a pleasant transition as it welcomes the spring season, with temperatures remaining cozy yet mild compared to the hotter months that follow. While the average warmth hovers around a comfortable 23°C (73°F), the month's humidity level tends to be on the higher side, creating a lush, vibrant atmosphere. It's also one of the more rainy months, with precipitation occurring across about half of its days, making it distinct from the drier spells of earlier months. As you plan your visit, you can look forward to experiencing the unique charm of Nuku'alofa's September weather, characterized by its blend of warmth and refreshing rain. For more detailed insights, check out Nuku'alofa Climate.