Kumak Weather in September
Kumak in September sees high daytime temperatures of 26°C (79°F) and nighttime lows of 20°C (68°F). Moderate rainfall is typical, with around 36 mm (1.4 in) for the month.
Rainfall in Kumak in September
You can typically expect 6 days of rain this month, averaging around 36 mm (1.4 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Kumak in September
September in Kumak is generally perfect, with days reaching 26°C (79°F) and nights settling around 20°C (68°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 20°C (68°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Kumak in September
The city usually sees around 237 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Kumak in September
Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in September
The water is 23°C (73°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September, October, November and December typically offer the best weather for Kumak.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Caledonia, check out our Kumak's climate page.
Kumak Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
26°C (79°F)
Water Temperature
23°C (73°F)
Chance of Rain
18%
Precipitation
36 mm (1.4 in)
Rainy days
6 days
Humidity
74%
Windspeed
3 m/s (6 knots)
Sunshine
237 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kumak typically stay consistent throughout September, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows around 18°C (64°F).
Average temperatures in September
Historical weather for Kumak in September
Browse day-by-day weather records for Kumak spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kumak historical weather extremes in September
Based on 49 years of weather observations in Kumak between 1976 and 2025, these are the recorded extremes.
- On September 18, 1988, temperatures climbed to 31°C (88°F), marking the warmest September day on record.
- Kumak experienced its chilliest September day on September 16, 1976, reaching only 18°C (64°F).
- Kumak registered its coldest September night on September 5, 2011, with temperatures dropping to 13°C (55°F).
Best Places in New Caledonia in September
Find out more about the weather in New Caledonia and which places have the best travel conditions in this month. See all of New Caledonia in September →
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What to Wear in Kumak in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. With water temperatures around 23°C (73°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Kumak in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit New Caledonia, check out our Kumak's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Kumak climate overview or explore weather in New Caledonia.
