Juliaca in Summer
In summer (December, January and February), Juliaca sees average daytime highs around 15°C and overnight lows near 5°C, with 514 mm of precipitation over about 72 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs ease from about 17°C in early December to 15°C by late February. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels dry.
Summer is Juliaca's weakest season of the year to visit on our travel score. For the whole year in context, see Juliaca's year-round climate.
- Avg daytime high
- 15°C
- 3rd-warmest season
- Avg overnight low
- 5°C
- Precipitation
- 514 mm
- 72 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Juliaca in Summer
Over the season highs ease from about 17°C in early December to 15°C by late February.
A typical summer day in Juliaca reaches about 15°C and drops to 5°C overnight. The warmest of the three months is December, the coolest February.
How summer really feels in Juliaca
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Juliaca 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 15° / 5° | 193 | 26.3 | 0.8 | 12.8 | 2.7 |
| Feb | 15° / 5° | 181 | 23.7 | 0.3 | 12.5 | 2.6 |
| Mar | 15° / 5° | 151 | 25.2 | 0.6 | 12.1 | 2.9 |
| Apr | 15° / 3° | 75 | 15.8 | 0.2 | 11.7 | 4.0 |
| May | 16° / -1° | 22 | 5.4 | 0.1 | 11.3 | 5.7 |
| Jun | 16° / -2° | 7 | 1.7 | 0.2 | 11.1 | 6.2 |
| Jul | 16° / -3° | 7 | 2 | 0.1 | 11.2 | 6.3 |
| Aug | 17° / -1° | 18 | 4.8 | 0.4 | 11.5 | 6.3 |
| Sep | 17° / 1° | 46 | 10.3 | 0.5 | 11.9 | 5.8 |
| Oct | 18° / 3° | 78 | 14.3 | 0.9 | 12.4 | 5.2 |
| Nov | 18° / 4° | 76 | 14.1 | 0.5 | 12.7 | 5.0 |
| Dec | 16° / 5° | 140 | 21.7 | 0.5 | 12.9 | 3.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Juliaca gets around 514 mm of rain and snow over 72 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 6 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 54 min in early December to 12 h 18 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 7.0 kWh/m².
Hazard calendar for Juliaca
In summer, Juliaca overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Juliaca's monsoon runs December–March, when most of the year's rain falls.
Is summer a good time to visit Juliaca?
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 Juliaca.
What to pack for Juliaca in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Juliaca sees daytime highs around 15°C and nights near 5°C. Pack rain gear and sun protection. Worth having: a warm layer. About 72 days see rain.
UV index in Juliaca in Summer
Clear-sky midday UV across summer averages around 18 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Juliaca peaks around February 9 at about 19 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).
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) | 19 | 19 | 17 | 14 | 11 | 10 | 10 | 13 | 14 | 16 | 17 | 17 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 19 | Extreme |
| Feb | 19 | Extreme |
| Mar | 17 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 13 | Extreme |
| Sep | 14 | Extreme |
| Oct | 16 | Extreme |
| Nov | 17 | Extreme |
| Dec | 17 | Extreme |
Where is Juliaca?
Juliaca sits at 15.5°S, 70.1°W, 3,834 m above sea level, in Peru. The nearest listed city is San Miguel, 3.0 km away.
Topography around Juliaca
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Juliaca.
Within 3 km, the terrain around Juliaca has significant variations in elevation — a maximum elevation change of 271 m around an average of 3,847 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 501 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,579 m.
The land around Juliaca is covered by artificial surfaces (67%) and grassland (25%) within 3 km, grassland (51%) and cropland (39%) within 16 km, and grassland (67%) within 80 km.
Peru travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 220 V · 60 Hz
- Prices
- ≈ 51% of US
- price level, 2025
- GDP per capita
- $9,684
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 49%
- of population, 2024
- Homicide rate
- 8.6
- per 100k, 2021
- Road deaths
- 13.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 519
- 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 Juliaca (-15.5°, -70.1333°, elevation 3,834 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.