Mount Hagen weather in September

In September, Mount Hagen sees average daytime highs of 22°C and overnight lows near 13°C, with 231 mm of rain across 23.8 wet days and about 12 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 5% of the time in September, and the air most often feels comfortable.

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 Mount Hagen's 4th-clearest and 1st-windiest month. For the whole year in context, see Mount Hagen's year-round climate.

Daytime high
22°
9th warmest
Overnight low
13°
1st coldest
Rainfall
231 mm
23.8 wet days
Daylight
12 hours
6:18 AM – 6:16 PM
Cloud cover
82%
4th clearest
Wind
4 km/h
1st windiest
Solar energy
4.8 kWh/m²
Travel score
4.2
out of 10

Mount Hagen is capital town of Western Highlands, Papua New Guinea.

Founded
1934

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 22°C through the month.

A typical September day in Mount Hagen reaches about 22°C in the afternoon and slips back to 13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 23°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102213
112213
122213
132213
142213
152213
162213
172213
182213
192213
202213
212213
222213
232213
242213
252213
262213
272213
282213
292213
302213

Mount Hagen weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 14°52027.712.33.7
Feb22° / 14°49125.712.23.6
Mar22° / 14°49128.3123.6
Apr22° / 14°37626.311.93.8
May22° / 14°23023.411.74.4
Jun22° / 13°17321.611.74.6
Jul22° / 13°19923.411.74.4
Aug22° / 13°21123.811.84.4
Sep22° / 13°23123.8124.2
Oct22° / 13°28724.812.14.2
Nov22° / 14°31625.312.34.0
Dec22° / 14°42327.712.33.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 8% of September, with mostly cloudy or overcast conditions the remaining 87%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11783
21684
31684
41585
51585
61486
71585
81585
91585
101486
111486
121486
131486
141486
151486
161486
171486
181387
191387
201387
211288
221288
231288
241189
251090
261090
271090
281090
29991
30892

Chance of precipitation in September

Any precipitation

Mount Hagen gets around 231 mm of rain over 23.8 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 79% and peaks near 80% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
180
280
380
480
580
680
780
880
979
1079
1179
1279
1379
1479
1579
1679
1779
1879
1979
2079
2179
2279
2379
2479
2579
2679
2779
2879
2979
3078

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
178013
278013
378013
487814
587814
687814
787814
887814
987715
1087814
1187814
1287814
1387814
1477914
1577914
1677914
1778013
1878013
1968113
2068113
2168113
2268014
2358114
2458114
2558114
2658114
2758114
2858114
2958114
3058015

Wind in September

Winds average 4 km/h in September, the windiest month of the year.

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 6:26 AM to 6:11 AM, and sunset from 6:19 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:266:19
211.96:266:19
311.96:256:19
411.96:256:19
511.96:246:19
611.96:246:18
711.96:236:18
811.96:236:18
911.96:226:18
1011.96:226:18
1111.96:216:17
1211.96:206:17
1312.06:206:17
1412.06:196:17
1512.06:196:17
1612.06:186:16
1712.06:186:16
1812.06:176:16
1912.06:176:16
2012.06:166:16
2112.06:166:15
2212.06:156:15
2312.06:156:15
2412.06:146:15
2512.06:146:15
2612.06:136:14
2712.06:136:14
2812.06:126:14
2912.06:126:14
3012.06:116:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.8 kWh/m².

For context, solar energy here swings from a low near 4.17 kWh/m² to a high of 4.85 kWh/m² in October across the year — September's 4.8 kWh/m² sits near the top of that range.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Is September a good time to visit Mount Hagen?

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

4.2
Sightseeing
5th-best month of the year
2.9
Beach & pool
6th-best month of the year

September is a reasonable time to visit Mount Hagen for sightseeing.

What to pack for Mount Hagen in September

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

In September, Mount Hagen sees daytime highs around 22°C and nights near 13°C. Pack rain gear. Worth having: sun protection. About 24 days see rain.

rain gearsun protection

UV index in Mount Hagen in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mount Hagen peaks around March 12 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 12UV 17Jun 19UV 11
UV index (midday)Level
Jan17Extreme
Feb17Extreme
Mar18Extreme
Apr16Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep15Extreme
Oct15Extreme
Nov15Extreme
Dec14Extreme
Location & terrain

Where is Mount Hagen?

Mount Hagen sits at 5.9°S, 144.2°E, 1,728 m above sea level, in Papua New Guinea. The nearest listed city is Mendi, 71 km away.

GorokaMadangWewakBuloloLaeDaruMerauke

Topography around Mount Hagen

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

Within 3 km, the terrain around Mount Hagen has significant variations in elevation — a maximum elevation change of 257 m around an average of 1,727 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,679 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,045 m.

The land around Mount Hagen is covered by trees (57%) and grassland (33%) within 3 km, trees (62%) and grassland (37%) within 16 km, and trees (87%) within 80 km.

3 km
257 m
16 km
1,679 m
80 km
4,045 m
treesgrasslandartificial surfaces
September weather nearby: Mendi 71 km · Goroka 130 km · Madang 186 km · Wewak 265 km · Bulolo 305 km · Lae 320 km · Daru 375 km · Merauke 514 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 Mount Hagen (-5.8575°, 144.2306°, elevation 1,728 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. 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).