Climate averages 1991–2020
Tacna weather
in July.
A mild, very dry month: the coolest and the 6th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a mild month in Tacna: daytime highs average 18.9°C and nights cool to about 13.0°C. By daytime temperature it is the coolest month of the year.
Expect about 3.9 mm of rain on fewer than one day, which makes July a very dry month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 09 min on an average July day.
The nearest other city in this atlas is Arica (51 km away). In July its highs average 17.1°C, 1.8°C cooler than Tacna, with 29 mm of rain.
Among the 24 cities listed in Peru, Tacna ranks 19th of 24 for the warmest July highs and 12th of 24 for the driest July (rainfall, lowest first). The mean July high of those 24 cities is 22.4°C; Tacna is 3.5°C cooler than that mean.
From July to August, average highs rise by 0.5°C to 19.4°C, and monthly rainfall falls from 3.9 mm to 3.6 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tacna climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.4°C17.9°C | 17.9°C | 23 | 6.5 | 13.113 h |
| February | 26.9°C18.5°C | 18.5°C | 23 | 6.9 | 12.713 h |
| March | 26.5°C18.0°C | 18.0°C | 14 | 4.1 | 12.212 h |
| April | 24.3°C16.3°C | 16.3°C | 1.9 | 0.4 | 11.712 h |
| May | 21.6°C15.0°C | 15.0°C | 4.1 | 0.4 | 11.311 h |
| June | 19.5°C13.8°C | 13.8°C | 4.5 | 0.4 | 11.111 h |
| July, selected | 18.9°C13.0°C | 13.0°C | 3.9 | 0.5 | 11.211 h |
| August | 19.4°C12.9°C | 12.9°C | 3.6 | 0.5 | 11.512 h |
| September | 20.5°C13.1°C | 13.1°C | 2.4 | 0.2 | 12.012 h |
| October | 21.9°C13.6°C | 13.6°C | 1.1 | 0.0 | 12.512 h |
| November | 23.7°C14.6°C | 14.6°C | 1.1 | 0.2 | 12.913 h |
| December | 25.3°C16.3°C | 16.3°C | 5.6 | 1.4 | 13.213 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Arica in JulyChile · 51 kmHigh 17.1°C · Low 12.5°C · 29 mm rain
- Puno in JulyPeru · 243 kmHigh 14.7°C · Low -0.8°C · 8.7 mm rain
- Iquique (approximate) in JulyChile · 245 kmHigh 21.9°C · Low 13.0°C · 16 mm rain
- Alto Hospicio in JulyChile · 251 kmHigh 19.2°C · Low 9.8°C · 0.5 mm rain
- Viacha in JulyBolivia · 257 kmHigh 13.5°C · Low -1.6°C · 10 mm rain
- La Paz in JulyBolivia · 280 kmHigh 13.1°C · Low 0.5°C · 14 mm rain
- Juliaca in JulyPeru · 280 kmHigh 14.5°C · Low -2.0°C · 7.0 mm rain
- Oruro in JulyBolivia · 334 kmHigh 12.8°C · Low -2.4°C · 8.1 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tacna) is explained once on the Tacna year overview and on the Sources, method and limits page.