Juliaca climate
Juliaca (Peru) has a subtropical highland (dry winter) climate (Köppen Cwb). The average temperature over the year is 10 °C49 °F, and about 482 mm19 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Juliaca climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1762 | 541 | 1152 | 943.7 | 0 |
| Feb | 1762 | 541 | 1151 | 1024.0 | 0 |
| Mar | 1762 | 541 | 1151 | 672.6 | 0 |
| Apr | 1661 | 439 | 1050 | 301.2 | 1 |
| May | 1661 | 134 | 847 | 110.4 | 8 |
| Jun | 1559 | 032 | 745 | 20.1 | 13 |
| Jul | 1458 | −131 | 744 | 40.2 | 17 |
| Aug | 1560 | 033 | 846 | 50.2 | 10 |
| Sep | 1762 | 236 | 949 | 190.7 | 3 |
| Oct | 1763 | 439 | 1151 | 411.6 | 1 |
| Nov | 1865 | 541 | 1253 | 251.0 | 0 |
| Dec | 1763 | 541 | 1152 | 833.3 | 0 |
| Year | 1865 | −131 | 1049 | 48219 | 53 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 64% | 79% | 6.6 | 12:57 |
| Feb | 67% | 81% | 6.5 | 12:37 |
| Mar | 67% | 72% | 6.4 | 12:13 |
| Apr | 64% | 55% | 6.1 | 11:46 |
| May | 56% | 35% | 5.8 | 11:24 |
| Jun | 55% | 28% | 5.5 | 11:13 |
| Jul | 54% | 27% | 5.7 | 11:17 |
| Aug | 53% | 32% | 6.3 | 11:36 |
| Sep | 54% | 42% | 6.7 | 12:02 |
| Oct | 54% | 53% | 7.2 | 12:29 |
| Nov | 53% | 56% | 7.5 | 12:52 |
| Dec | 60% | 72% | 7.0 | 13:03 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Juliaca is like
The warmest month is November, with an average high of 18 °C65 °F and a low of 5 °C41 °F. The coldest is July, when highs average 14 °C58 °F and lows −1 °C31 °F. Seasonal differences are small — just 4.8 °C8.7 °F between the warmest and the coolest month.
Annual precipitation is moderate at about 482 mm19 in. The wettest three-month stretch is December–February, which brings 58% of the annual total. Months with less than 20 mm0.8 in on average: May–September. The wettest month is February (102 mm4.0 in), the driest is June (2 mm0.1 in).
Relative humidity ranges from 53% in August to 67% in March. The clearest skies (lowest average cloud amount, 27%) are typical of July. Average wind speed near the ground ranges from 7 km/h (4 mph) in May to 9 km/h (6 mph) in December. Daylight lasts from about 11.2 hours in June to 13.0 hours in December.
Best time to visit Juliaca
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October and November: average highs of 17 °C63 °F to 18 °C65 °F with 25 mm1.0 in to 41 mm1.6 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Juliaca
- Wetter months (December–March, October) — highs around 17 °C62 °F, lows 439 to 5 °C41 °F, about 77 mm3.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Drier months (April–September, November) — highs 1458 to 18 °C65 °F, lows −131 to 5 °C41 °F, about 14 mm0.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
How Juliaca compares
Compared with Arequipa, about 180 km to the southwest, Juliaca is on average 7.4 °C13.4 °F cooler and receives 225% more precipitation (482 mm19 in vs 149 mm5.9 in). The difference is largest in July (8.5 °C15.4 °F cooler).
Of the 21 places in Peru covered by World Climates, Juliaca is the 21st warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the Peru climate page.
Places in other countries with the most similar temperature and rainfall pattern: La Paz (Bolivia, ET), Potosí (Bolivia, ET) and Oruro (Bolivia, Cwb).
Nearby places
- Puno 40 km · 10 °C50 °F · 421 mm17 in
- Arequipa 180 km · 17 °C63 °F · 149 mm5.9 in
- La Paz 239 km · 8 °C47 °F · 647 mm25 in
- Tacna 280 km · 26 °C79 °F · 48 mm1.9 in
- Cusco 295 km · 11 °C52 °F · 718 mm28 in
- Arica 331 km · 27 °C80 °F · 26 mm1.0 in
- Oruro 425 km · 8 °C47 °F · 481 mm19 in
- Cochabamba 473 km · 17 °C63 °F · 498 mm20 in
Frequently asked questions
What is the warmest month in Juliaca?
November is the warmest month in Juliaca, with an average high of 18 °C (65 °F) and an average low of 5 °C (41 °F).
What is the coldest month in Juliaca?
July is the coldest month, with an average high of 14 °C (58 °F) and an average low of -1 °C (31 °F).
When does it rain the most in Juliaca?
February is the wettest month with about 102 mm (4.0 in) of precipitation; June is the driest with about 2 mm (0.1 in).
What is the best time to visit Juliaca?
Judging by long-term averages, the most comfortable months are October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.