Mount Hagen in Summer
In summer (December, January and February), Mount Hagen sees average daytime highs around 22°C and overnight lows near 14°C, with 1434 mm of rain over about 81 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 22°C. The sky is clear or mostly clear about 0% of the time across summer, and the air most often feels humid.
Summer is Mount Hagen's weakest season of the year to visit on our travel score. Mount Hagen has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Mount Hagen's year-round climate.
- Avg daytime high
- 22°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 1434 mm
- 81 wet days
- Avg wind
- 4 km/h
- Travel score
- 3.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Mount Hagen in Summer
Across summer, daytime highs hold fairly steady around 22°C.
A typical summer day in Mount Hagen reaches about 22°C and drops to 14°C overnight. The warmest of the three months is December, the coolest December.
Mount Hagen weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 22° / 14° | 520 | 27.7 | 12.3 | 3.7 |
| Feb | 22° / 14° | 491 | 25.7 | 12.2 | 3.6 |
| Mar | 22° / 14° | 491 | 28.3 | 12 | 3.6 |
| Apr | 22° / 14° | 376 | 26.3 | 11.9 | 3.8 |
| May | 22° / 14° | 230 | 23.4 | 11.7 | 4.4 |
| Jun | 22° / 13° | 173 | 21.6 | 11.7 | 4.6 |
| Jul | 22° / 13° | 199 | 23.4 | 11.7 | 4.4 |
| Aug | 22° / 13° | 211 | 23.8 | 11.8 | 4.4 |
| Sep | 22° / 13° | 231 | 23.8 | 12 | 4.2 |
| Oct | 22° / 13° | 287 | 24.8 | 12.1 | 4.2 |
| Nov | 22° / 14° | 316 | 25.3 | 12.3 | 4.0 |
| Dec | 22° / 14° | 423 | 27.7 | 12.3 | 3.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 0% of the time across summer.
Chance of precipitation in Summer
Mount Hagen gets around 1434 mm of rain over 81 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 18 min in early December to 12 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.4 kWh/m².
Is summer a good time to visit Mount Hagen?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Mount Hagen.
What to pack for Mount Hagen in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mount Hagen sees daytime highs around 22°C and nights near 14°C. Pack rain gear. Worth having: light clothes. About 81 days see rain.
UV index in Mount Hagen in Summer
Clear-sky midday UV across summer averages around 16 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 17 | 17 | 18 | 16 | 13 | 11 | 12 | 13 | 15 | 15 | 15 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 17 | Extreme |
| Feb | 17 | Extreme |
| Mar | 18 | Extreme |
| Apr | 16 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 15 | Extreme |
| Oct | 15 | Extreme |
| Nov | 15 | Extreme |
| Dec | 14 | Extreme |
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.
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.
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
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.