Madang weather in September

In September, Madang sees average daytime highs of 29°C and overnight lows near 24°C, with 151 mm of rain across 17.3 wet days and about 12 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 16% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Madang's 2nd-clearest and 5th-windiest month. For the whole year in context, see Madang's year-round climate.

Daytime high
29°
8th warmest
Overnight low
24°
3rd coldest
Rainfall
151 mm
17.3 wet days
Daylight
12 hours
6:12 AM – 6:10 PM
Cloud cover
72%
2nd clearest
Wind
4 km/h
5th windiest
Solar energy
5.34 kWh/m²
Travel score
4.5
out of 10

Madang is human settlement in Papua New Guinea.

Founded
1884

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Madang reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62824
72824
82824
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924

How September really feels in Madang

Once humidity and wind are folded in, September averages 13 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
13
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Madang weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°43028.812.32.9
Feb29° / 24°39526.412.22.8
Mar29° / 24°46628.2123.0
Apr29° / 24°41427.411.93.1
May29° / 24°26224.411.83.7
Jun28° / 24°15020.611.74.1
Jul28° / 24°16920.511.74.4
Aug28° / 24°15117.611.84.7
Sep29° / 24°15117.3124.5
Oct29° / 24°22922.112.13.9
Nov29° / 24°33725.912.23.3
Dec29° / 24°4272912.32.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23268
33268
43268
53268
63070
73070
83070
93070
102971
112971
122971
132971
143070
153070
162971
173070
183070
193070
203070
213169
223070
233070
243169
253070
263070
273070
283070
292971
302971

Chance of precipitation in September

Any precipitation

Madang gets around 151 mm of rain over 17.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 60% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
159
259
359
459
559
658
758
858
958
1058
1158
1258
1358
1458
1557
1657
1757
1857
1957
2057
2157
2257
2357
2458
2558
2658
2759
2859
2960
3060

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
18911
28911
38911
48911
58911
69010
79010
89010
99010
109010
119010
129010
139010
149010
159010
169010
178911
188911
198911
208911
218911
228911
238812
248812
258812
268812
278713
288713
298713
308614

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:20 AM to 6:05 AM, and sunset from 6:14 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:206:14
211.96:196:13
311.96:196:13
411.96:186:13
511.96:186:13
611.96:176:13
711.96:176:12
811.96:166:12
911.96:166:12
1011.96:156:12
1111.96:156:11
1212.06:146:11
1312.06:146:11
1412.06:136:11
1512.06:136:11
1612.06:126:10
1712.06:126:10
1812.06:116:10
1912.06:106:10
2012.06:106:09
2112.06:096:09
2212.06:096:09
2312.06:086:09
2412.06:086:09
2512.06:076:08
2612.06:076:08
2712.06:066:08
2812.06:066:08
2912.06:056:08
3012.06:056:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.34 kWh/m².

For context, solar energy here swings from a low near 4.4 kWh/m² to a high of 5.37 kWh/m² in October across the year — September's 5.34 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Madang

In seasonPeak

None of Madang's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Madang sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Madang?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.5
Sightseeing
2nd-best month of the year
5.5
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Madang for sightseeing.

What to pack for Madang in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Madang sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Madang in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in December at about 30°C and coldest in August near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Warm
Sep28Tropical
Oct29Tropical
Nov29Tropical
Dec30Tropical

UV index in Madang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Madang peaks around March 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 13UV 16Jun 21UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar17Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Madang?

Madang sits at 5.2°S, 145.8°E, 4 m above sea level, in Papua New Guinea. The nearest listed city is Goroka, 106 km away.

GorokaMount HagenLaeBuloloMendiWewakPopondettaKimbe

Topography around Madang

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Madang.

Within 3 km, the terrain around Madang has only modest variations in elevation — a maximum elevation change of 45 m around an average of 9 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 548 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,835 m.

The land around Madang is covered by trees (45%), water (25%) and grassland (21%) within 3 km, water (51%) and trees (47%) within 16 km, and trees (60%) and water (38%) within 80 km.

3 km
45 m
16 km
548 m
80 km
3,835 m
treesgrasslandartificial surfaceswatermangroves
September weather nearby: Goroka 106 km · Mount Hagen 186 km · Lae 214 km · Bulolo 240 km · Mendi 257 km · Wewak 303 km · Popondetta 478 km · Kimbe 483 km

Papua New Guinea travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type I
240 V · 50 Hz
Prices
≈ 58% of US
price level, 2025
GDP per capita
$3,020
2025
Homicide rate
9.3
per 100k, 2010
Road deaths
12.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Protestant 64%Roman Catholic 26%other Christian 5%non-Christian 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Madang (-5.2215°, 145.7869°, elevation 4 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).