Wamena in Summer
In summer (December, January and February), Wamena sees average daytime highs around 21°C and overnight lows near 12°C, with 1169 mm of rain over about 85 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 21°C. The sky is clear or mostly clear about 0% of the time across summer, and the air most often feels comfortable.
Summer is Wamena's weakest season of the year to visit on our travel score. For the whole year in context, see Wamena's year-round climate.
- Avg daytime high
- 21°C
- warmest season of the year
- Avg overnight low
- 12°C
- Rainfall
- 1169 mm
- 85 wet days
- Avg wind
- 3 km/h
- Travel score
- 3.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Wamena in Summer
Across summer, daytime highs hold fairly steady around 21°C.
A typical summer day in Wamena reaches about 21°C and drops to 12°C overnight. The warmest of the three months is December, the coolest January.
Wamena 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 | 21° / 12° | 404 | 28.9 | 12.2 | 3.4 |
| Feb | 21° / 12° | 407 | 27.3 | 12.1 | 3.2 |
| Mar | 21° / 12° | 427 | 30.3 | 12 | 3.2 |
| Apr | 21° / 12° | 359 | 28.5 | 11.9 | 3.3 |
| May | 20° / 12° | 233 | 27.1 | 11.8 | 3.7 |
| Jun | 20° / 11° | 213 | 25.4 | 11.8 | 3.8 |
| Jul | 19° / 11° | 232 | 25.9 | 11.8 | 3.8 |
| Aug | 20° / 11° | 258 | 27.8 | 11.9 | 3.6 |
| Sep | 20° / 11° | 275 | 27.7 | 12 | 3.5 |
| Oct | 20° / 12° | 261 | 28.2 | 12.1 | 3.5 |
| Nov | 21° / 12° | 259 | 27.6 | 12.2 | 3.5 |
| Dec | 21° / 12° | 359 | 29.2 | 12.2 | 3.4 |
Cloud cover in Summer
The sky is clear or mostly clear about 0% of the time across summer.
Chance of precipitation in Summer
Wamena gets around 1169 mm of rain over 85 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 3 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 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 4.3 kWh/m².
Is summer a good time to visit Wamena?
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 Wamena.
What to pack for Wamena in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Wamena sees daytime highs around 21°C and nights near 12°C. Pack rain gear. About 85 days see rain.
UV index in Wamena in Summer
Clear-sky midday UV across summer averages around 17 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Wamena peaks around March 13 at about 19 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 13 (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 | 18 | 19 | 17 | 14 | 13 | 13 | 14 | 16 | 16 | 15 | 15 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 17 | Extreme |
| Feb | 18 | Extreme |
| Mar | 19 | Extreme |
| Apr | 17 | Extreme |
| May | 14 | Extreme |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 16 | Extreme |
| Oct | 16 | Extreme |
| Nov | 15 | Extreme |
| Dec | 15 | Extreme |
Where is Wamena?
Wamena sits at 4.1°S, 138.9°E, 1,488 m above sea level, in Indonesia. The nearest listed city is Tiom, 58 km away.
Topography around Wamena
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Wamena.
Within 3 km, the terrain around Wamena has only modest variations in elevation — a maximum elevation change of 243 m around an average of 1,662 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,670 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,664 m.
The land around Wamena is covered by grassland (58%) and trees (21%) within 3 km, trees (55%) and grassland (42%) within 16 km, and trees (92%) within 80 km.
Indonesia travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,060
- 2025
- Happiness
- 5.6 / 10
- World Happiness, 2025
- Safe drinking water
- 30%
- of population, 2024
- Homicide rate
- 0.3
- per 100k, 2022
- Road deaths
- 11.3
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 471
- 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 Wamena (-4.0958°, 138.9481°, elevation 1,488 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.