Climate and average weather in Tacna
In Tacna, the weather is warm, fairly dry, and mostly cloudy and remarkably steady, with daytime highs holding near warm levels all year. The wettest stretch peaks around January.
Over the course of the year, the temperature in Tacna typically varies from 13°C to 25°C, and is rarely below 12°C or above 27°C. February is the hottest month of the year, while July is the coldest.
Based on the travel score, the best times of year to visit Tacna for warm-weather activities are from early January to late January and mid February to late December.
- Hottest
- Feb
- 25°
- Coldest
- Jul
- 13°
- Wettest
- Jan
- 23 mm
- Driest
- Oct
- 1 mm
- Rain / yr
- 89 mm
- 21 wet days
- Daylight
- 10.9–13.1 h
- shortest–longest
- Elevation
- 567 m
- 18.0°S
- Clearest
- Aug
- 50% cloud
Tacna is city of Peru, capital of Tacna region.
- Founded
- 1875
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Tacna weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid February to late December.
Temperature through the year
Daily average highs and lows in Tacna, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Tacna stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 25°C and low of 18°C; the coolest is July, with an average low of 13°C and high of 20°C.
Days typically run about 7°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 25 | 24 | 22 | 21 | 20 | 20 | 21 | 22 | 23 | 24 |
| Avg low (°C) | 17 | 18 | 17 | 16 | 15 | 14 | 13 | 14 | 14 | 15 | 15 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 25 | 17 |
| Feb | 25 | 18 |
| Mar | 25 | 17 |
| Apr | 24 | 16 |
| May | 22 | 15 |
| Jun | 21 | 14 |
| Jul | 20 | 13 |
| Aug | 20 | 14 |
| Sep | 21 | 14 |
| Oct | 22 | 15 |
| Nov | 23 | 15 |
| Dec | 24 | 16 |
Average hourly temperature in Tacna
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on February afternoons, near 25°C, and coldest before dawn in July, near 13°C.
Tacna weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 17° | 23 | 6.5 | 13 | 7.0 |
| Feb | 25° / 18° | 23 | 6.9 | 12.6 | 6.8 |
| Mar | 25° / 17° | 14 | 4.1 | 12.1 | 7.6 |
| Apr | 24° / 16° | 2 | 0.4 | 11.6 | 8.6 |
| May | 22° / 15° | 4 | 0.4 | 11.2 | 8.2 |
| Jun | 21° / 14° | 5 | 0.4 | 10.9 | 7.8 |
| Jul | 20° / 13° | 4 | 0.5 | 11 | 7.7 |
| Aug | 20° / 14° | 4 | 0.5 | 11.4 | 7.9 |
| Sep | 21° / 14° | 2 | 0.2 | 11.9 | 8.1 |
| Oct | 22° / 15° | 1 | 0 | 12.4 | 8.2 |
| Nov | 23° / 15° | 1 | 0.2 | 12.8 | 8.5 |
| Dec | 24° / 16° | 6 | 1.4 | 13.1 | 8.1 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Tacna gets about 89 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.
The wetter season lasts 3.2 months, from around Dec 21 to Mar 28, peaking in February at about 27% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Oct 2.
January is the wettest month by volume, with 23 mm over about 7 wet days; October is the driest, with 1 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 21 | 24 | 13 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 5 |
| Rain days | 7 | 7 | 4 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 21 | 7 |
| Feb | 24 | 7 |
| Mar | 13 | 4 |
| Apr | 2 | 0 |
| May | 1 | 0 |
| Jun | 1 | 0 |
| Jul | 1 | 1 |
| Aug | 1 | 1 |
| Sep | 1 | 0 |
| Oct | 0 | 0 |
| Nov | 1 | 0 |
| Dec | 5 | 1 |
Monthly rainfall
Over a full year, Tacna collects about 89 mm of rain across 21 wet days — roughly 7 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 23 mm, while October is the driest at just 1 mm. The three wettest months alone bring about 68% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 23 | 23 | 14 | 2 | 4 | 5 | 4 | 4 | 2 | 1 | 1 | 6 |
| Rain days | 7 | 7 | 4 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 23 | 7 |
| Feb | 23 | 7 |
| Mar | 14 | 4 |
| Apr | 2 | 0 |
| May | 4 | 0 |
| Jun | 5 | 0 |
| Jul | 4 | 1 |
| Aug | 4 | 1 |
| Sep | 2 | 0 |
| Oct | 1 | 0 |
| Nov | 1 | 0 |
| Dec | 6 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Tacna, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around April 6 and lasts for 7.7 months, ending around November 25. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 75% of the time on average.
The cloudier part of the year begins around November 26 and lasts for 4.3 months, ending around April 5. The cloudiest month is February, when it is overcast or mostly cloudy 78% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 24 | 22 | 37 | 59 | 66 | 65 | 73 | 75 | 74 | 61 | 57 | 38 |
| Cloudier (%) | 76 | 78 | 63 | 41 | 34 | 35 | 27 | 25 | 26 | 39 | 43 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 24 | 76 |
| Feb | 22 | 78 |
| Mar | 37 | 63 |
| Apr | 59 | 41 |
| May | 66 | 34 |
| Jun | 65 | 35 |
| Jul | 73 | 27 |
| Aug | 75 | 25 |
| Sep | 74 | 26 |
| Oct | 61 | 39 |
| Nov | 57 | 43 |
| Dec | 38 | 62 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 13 h 06 min of light; the shortest, around June 10, only 10 h 54 min — a swing of roughly 2 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.0 | 12.6 | 12.1 | 11.6 | 11.2 | 10.9 | 11.0 | 11.4 | 11.9 | 12.4 | 12.8 | 13.1 |
| Sunrise (AM) | 5:21 | 5:37 | 5:47 | 5:53 | 6:03 | 6:13 | 6:16 | 6:04 | 5:38 | 5:14 | 5:00 | 5:05 |
| Sunset (PM) | 6:19 | 6:14 | 5:54 | 5:29 | 5:12 | 5:09 | 5:17 | 5:27 | 5:32 | 5:39 | 5:52 | 6:09 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.0 | 5:21 | 6:19 |
| Feb | 12.6 | 5:37 | 6:14 |
| Mar | 12.1 | 5:47 | 5:54 |
| Apr | 11.6 | 5:53 | 5:29 |
| May | 11.2 | 6:03 | 5:12 |
| Jun | 10.9 | 6:13 | 5:09 |
| Jul | 11.0 | 6:16 | 5:17 |
| Aug | 11.4 | 6:04 | 5:27 |
| Sep | 11.9 | 5:38 | 5:32 |
| Oct | 12.4 | 5:14 | 5:39 |
| Nov | 12.8 | 5:00 | 5:52 |
| Dec | 13.1 | 5:05 | 6:09 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Tacna averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 13 days.
The sunnier stretch runs 5.8 months, from around Jun 11 to Dec 3. The sunniest month is August, with roughly 12 sunny days (mixed).
The greyest month is February, down near 3 sunny days — about 78% fewer than the August peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 3 | 2 | 6 | 11 | 10 | 8 | 10 | 12 | 10 | 9 | 10 | 6 |
| Sky | Gloomy | Gloomy | Gloomy | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 3 | Gloomy |
| Feb | 2 | Gloomy |
| Mar | 6 | Gloomy |
| Apr | 11 | Mixed |
| May | 10 | Mixed |
| Jun | 8 | Mixed |
| Jul | 10 | Mixed |
| Aug | 12 | Mixed |
| Sep | 10 | Mixed |
| Oct | 9 | Mixed |
| Nov | 10 | Mixed |
| Dec | 6 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Tacna, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 3.2 months, from around December 27 to April 3. The muggiest month is February, when the air feels humid, muggy or worse about 39% of the time.
The most comfortable stretch runs from around April 4 to December 26, and October is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 6 | 2 | 8 | 41 | 80 | 98 | 100 | 99 | 97 | 93 | 78 | 37 |
| Comfortable (%) | 68 | 59 | 68 | 54 | 19 | 2 | 0 | 1 | 3 | 7 | 22 | 59 |
| Humid (%) | 24 | 38 | 25 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Muggy (%) | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 6 | 68 | 24 | 2 |
| Feb | 2 | 59 | 38 | 1 |
| Mar | 8 | 68 | 25 | 0 |
| Apr | 41 | 54 | 4 | 0 |
| May | 80 | 19 | 0 | 0 |
| Jun | 98 | 2 | 0 | 0 |
| Jul | 100 | 0 | 0 | 0 |
| Aug | 99 | 1 | 0 | 0 |
| Sep | 97 | 3 | 0 | 0 |
| Oct | 93 | 7 | 0 | 0 |
| Nov | 78 | 22 | 0 | 0 |
| Dec | 37 | 59 | 4 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Tacna is steady company: average speeds sit near 7 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 8 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 8 | calm |
| Feb | 8 | calm |
| Mar | 7 | calm |
| Apr | 7 | calm |
| May | 6 | calm |
| Jun | 6 | calm |
| Jul | 6 | calm |
| Aug | 6 | calm |
| Sep | 7 | calm |
| Oct | 7 | calm |
| Nov | 8 | calm |
| Dec | 8 | calm |
Best time to visit Tacna
To characterize how pleasant the weather is in Tacna throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late December, Tacna is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Tacna for general outdoor tourist activities is from late February to late January, with a peak score in the third week of April.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 7.1 | 6.8 | 7.6 | 8.5 | 8.2 | 7.8 | 7.7 | 7.9 | 8.1 | 8.2 | 8.5 | 8.1 |
| Rating | good | good | ideal | ideal | ideal | ideal | ideal | ideal | ideal | ideal | ideal | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 7.1 | good |
| Feb | 6.8 | good |
| Mar | 7.6 | ideal |
| Apr | 8.5 | ideal |
| May | 8.2 | ideal |
| Jun | 7.8 | ideal |
| Jul | 7.7 | ideal |
| Aug | 7.9 | ideal |
| Sep | 8.1 | ideal |
| Oct | 8.2 | ideal |
| Nov | 8.5 | ideal |
| Dec | 8.1 | ideal |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Tacna for hot-weather activities is from mid October to mid May, with a peak score in the second week of April.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Tacna, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
Tacna packs about the same all year — highs hold near 25°C. Across the year the things worth having are light clothes and sun protection.
In February, Tacna sees daytime highs around 25°C and nights near 18°C. Pack sun protection. Worth having: light clothes. About 7 days see rain.
Sea temperature near Tacna
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea at the nearest coast (about 41 km away) is warmest in February at about 23°C and coldest in August near 17°C.
It's comfortable for a long swim from Nov 26 to May 7 — about 5.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 22 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 17 | 18 | 20 | 21 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 22 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 21 | Refreshing |
| May | 20 | Cool |
| Jun | 19 | Cool |
| Jul | 18 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 18 | Cool |
| Nov | 20 | Cool |
| Dec | 21 | Refreshing |
UV index (midday) in Tacna by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Tacna peaks around February 9 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 7 (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) | 16 | 16 | 13 | 12 | 9 | 7 | 7 | 10 | 12 | 14 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 16 | Extreme |
| Mar | 13 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 7 | Very high |
| Jul | 7 | Very high |
| Aug | 10 | Very high |
| Sep | 12 | Extreme |
| Oct | 14 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Average hourly UV index in Tacna
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in February the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 8 | 7.5 | 6.5 | 6 | 6 | 7 | 7.5 | 8.5 | 8.5 | 8.5 |
| UV ≥ 6 (h/day) | 7 | 7 | 6.5 | 5.5 | 4 | 3 | 3.5 | 5 | 6 | 6.5 | 6.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 7 |
| Mar | 8 | 6.5 |
| Apr | 7.5 | 5.5 |
| May | 6.5 | 4 |
| Jun | 6 | 3 |
| Jul | 6 | 3.5 |
| Aug | 7 | 5 |
| Sep | 7.5 | 6 |
| Oct | 8.5 | 6.5 |
| Nov | 8.5 | 6.5 |
| Dec | 8.5 | 7 |
Growing season
Tacna is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Tacna banks about 3,297 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 346 | 321 | 344 | 300 | 267 | 217 | 204 | 215 | 228 | 260 | 276 | 317 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 346 |
| Feb | 321 |
| Mar | 344 |
| Apr | 300 |
| May | 267 |
| Jun | 217 |
| Jul | 204 |
| Aug | 215 |
| Sep | 228 |
| Oct | 260 |
| Nov | 276 |
| Dec | 317 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Tacna receives about 6.2 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.3 and 8.0 kWh/m².
The brighter stretch of the year lasts 6.9 months, from around Sep 14 to Apr 10. The brightest month is November, averaging about 7.9 kWh/m² (intense).
The dimmest month is June, down near 4.4 kWh/m² — roughly 45% less than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.0 | 6.7 | 6.6 | 6.1 | 5.0 | 4.3 | 4.5 | 5.3 | 6.3 | 7.3 | 7.9 | 7.7 |
| Level | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 7.0 | Intense |
| Feb | 6.7 | Intense |
| Mar | 6.6 | Intense |
| Apr | 6.1 | Intense |
| May | 5.0 | Bright |
| Jun | 4.3 | Bright |
| Jul | 4.5 | Bright |
| Aug | 5.3 | Bright |
| Sep | 6.3 | Intense |
| Oct | 7.3 | Intense |
| Nov | 7.9 | Intense |
| Dec | 7.7 | Intense |
Where is Tacna?
Tacna sits at 18.0°S, 70.3°W, 567 m above sea level, in Peru. The nearest listed city is Arica, 51 km away.
Topography around Tacna
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tacna.
Within 3 km, the terrain around Tacna has significant variations in elevation — a maximum elevation change of 309 m around an average of 582 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,180 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,938 m.
The land around Tacna is covered by artificial surfaces (54%) and bare terrain (35%) within 3 km, bare terrain (90%) within 16 km, and bare terrain (71%) 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 Tacna (-18.0146°, -70.2536°, elevation 567 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).