Madang Weather in September
September in Madang brings high temperatures around 30°C (86°F) during the day, dropping to 24°C (75°F) at night, with quite a bit of rainfall expected, averaging around 163 mm (6.4 in) for the month.
Rainfall in Madang in September
Historically, approximately 14 days this month are expected to have rain, averaging 163 mm (6.4 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Madang in September
Madang in September gets highs of 30°C (86°F) during the day and drops to 24°C (75°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Madang in September
With approximately 216 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Madang in September
Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.
Average water temperature in September
At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.Should you favor a climate that's both dry and comfortably warm, August typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Papua New Guinea, check out our Madang's climate page.
Madang Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Water Temperature
28°C (82°F)
Chance of Rain
48%
Precipitation
163 mm (6.4 in)
Rainy days
14 days
Humidity
79%
Windspeed
2 m/s (4 knots)
Sunshine
216 hours
Percentage Sunshine
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Madang typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Historical weather for Madang in September
Browse day-by-day weather records for Madang spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Madang historical weather extremes in September
Based on weather observations in Madang between 2006 and 2025, these are the recorded extremes during September.
- The warmest day in September was on September 9, 2020, with a maximum of 33°C (91°F).
- The coldest September day was on September 12, 2012, with a maximum of 25°C (77°F).
- The coldest night in September in Madang was on September 11, 2019, with a minimum of 22°C (72°F).
Best Places in Papua New Guinea in September
Find out more about the weather in Papua New Guinea and which places have the best travel conditions in this month. See all of Papua New Guinea in September →
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What to Wear in Madang 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. With water temperatures around 28°C (82°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 Madang 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 Papua New Guinea, check out our Madang's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Madang climate overview or explore weather in Papua New Guinea.
