Tacna climate
Tacna (Peru) has a hot desert climate (Köppen BWh). The average temperature over the year is 26 °C79 °F, and about 48 mm1.9 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Tacna climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3289 | 2171 | 2780 | 110.4 |
| Feb | 3289 | 2271 | 2780 | 100.4 |
| Mar | 3290 | 2171 | 2780 | 70.3 |
| Apr | 3290 | 2069 | 2680 | 20.1 |
| May | 3290 | 1966 | 2678 | 00.0 |
| Jun | 3189 | 1865 | 2577 | 10.0 |
| Jul | 3188 | 1864 | 2576 | 40.1 |
| Aug | 3290 | 1865 | 2578 | 20.1 |
| Sep | 3391 | 1967 | 2679 | 20.1 |
| Oct | 3391 | 2068 | 2679 | 10.1 |
| Nov | 3290 | 2068 | 2679 | 20.1 |
| Dec | 3289 | 2169 | 2679 | 60.2 |
| Year | 3391 | 1864 | 2679 | 481.9 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 66% | 65% | 7.4 | 13:06 |
| Feb | 69% | 65% | 7.2 | 12:42 |
| Mar | 64% | 59% | 6.7 | 12:14 |
| Apr | 52% | 60% | 5.5 | 11:42 |
| May | 37% | 72% | 4.1 | 11:17 |
| Jun | 34% | 81% | 3.3 | 11:03 |
| Jul | 32% | 83% | 3.3 | 11:09 |
| Aug | 31% | 82% | 3.9 | 11:31 |
| Sep | 34% | 79% | 4.9 | 12:01 |
| Oct | 39% | 78% | 6.0 | 12:32 |
| Nov | 46% | 70% | 7.0 | 12:59 |
| Dec | 58% | 64% | 7.6 | 13:12 |
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 Tacna is like
The warmest month is March, with an average high of 32 °C90 °F and a low of 21 °C71 °F. The coldest is July, when highs average 31 °C88 °F and lows 18 °C64 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.3 °C4.1 °F.
It is very dry, with only 48 mm1.9 in of precipitation in an average year. The wettest three-month stretch is January–March, which brings 60% of the annual total. The wettest month is January (11 mm0.4 in), the driest is May (0 mm0.0 in).
Relative humidity ranges from 31% in August to 69% in February. The clearest skies (lowest average cloud amount, 59%) are typical of March. Average wind speed near the ground ranges from 7 km/h (4 mph) in June to 9 km/h (6 mph) in November. Daylight lasts from about 11.1 hours in June to 13.2 hours in December.
Best time to visit Tacna
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–August: average highs of 31 °C88 °F to 32 °C90 °F with 0 mm0.0 in to 11 mm0.4 in of precipitation per month.
The most challenging month is September, which is hot, with average highs of 33 °C91 °F.
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 Tacna
- Wetter months (December–March) — highs around 32 °C89 °F, lows 2169 to 22 °C71 °F, about 9 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Drier months (April–November) — highs 3188 to 33 °C91 °F, lows 1864 to 20 °C69 °F, about 2 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Tacna compares
Compared with Arequipa, about 226 km to the northwest, Tacna is on average 8.9 °C16 °F warmer and receives 68% less precipitation (48 mm1.9 in vs 149 mm5.9 in). The difference is largest in May (9.4 °C16.9 °F warmer).
Of the 21 places in Peru covered by World Climates, Tacna is the 5th warmest by annual mean temperature and the 18th 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 (seasons shifted for the other hemisphere where needed): Arica (Chile, BWh), Masirah (Oman, BWh) and Mukalla (Yemen, BWh).
Nearby places
- Arica 51 km · 27 °C80 °F · 26 mm1.0 in
- Arequipa 226 km · 17 °C63 °F · 149 mm5.9 in
- Puno 243 km · 10 °C50 °F · 421 mm17 in
- Iquique 245 km · 23 °C73 °F · 11 mm0.4 in
- Alto Hospicio 251 km · 19 °C66 °F · 8 mm0.3 in
- La Paz 280 km · 8 °C47 °F · 647 mm25 in
- Juliaca 280 km · 10 °C49 °F · 482 mm19 in
- Oruro 334 km · 8 °C47 °F · 481 mm19 in
Frequently asked questions
What is the warmest month in Tacna?
March is the warmest month in Tacna, with an average high of 32 °C (90 °F) and an average low of 21 °C (71 °F).
What is the coldest month in Tacna?
July is the coldest month, with an average high of 31 °C (88 °F) and an average low of 18 °C (64 °F).
When does it rain the most in Tacna?
January is the wettest month with about 11 mm (0.4 in) of precipitation; May is the driest with about 0 mm (0.0 in).
What is the best time to visit Tacna?
Judging by long-term averages, the most comfortable months are December–August.
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.
The grid cell’s average elevation is 2,225 m, while Tacna lies at about 567 m. Temperatures on this page were therefore adjusted by +10.8 °C19.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.