Climate and average weather in Tres Isletas
In Tres Isletas, the summers are humid, sweltering, showery, and partly cloudy and the winters are mild and partly cloudy.
Over the course of the year, the temperature in Tres Isletas typically varies from 11°C to 33°C, and is rarely below 2°C or above 38°C. January is the hottest month of the year, while June is the coldest.
Based on the travel score, the best time of year to visit Tres Isletas for warm-weather activities is from mid April to late September.
- Hottest
- Jan
- 33°
- Coldest
- Jun
- 12°
- Wettest
- Dec
- 144 mm
- Driest
- Jul
- 34 mm
- Rain / yr
- 1168 mm
- 106 wet days
- Daylight
- 10.3–13.7 h
- shortest–longest
- Elevation
- 102 m
- 26.3°S
- Clearest
- Aug
- 38% cloud
Tres Isletas is human settlement.
- Founded
- 1937
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Tres Isletas 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 April to late September.
Temperature through the year
Daily average highs and lows in Tres Isletas, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.2 months, from November 8 to March 15, with daily high temperatures above 30°C. The hottest month of the year in Tres Isletas is January, with an average high of 33°C and low of 22°C.
The cool season lasts 2.7 months, from May 14 to August 4, with daily high temperatures below 24°C. The coldest month of the year in Tres Isletas is June, with an average low of 12°C and high of 22°C.
Days typically run about 11°C warmer than nights, with the widest day–night swing (around 13°C) in September.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 32 | 30 | 27 | 23 | 22 | 22 | 25 | 27 | 30 | 31 | 32 |
| Avg low (°C) | 22 | 22 | 20 | 17 | 14 | 12 | 11 | 12 | 15 | 18 | 19 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 33 | 22 |
| Feb | 32 | 22 |
| Mar | 30 | 20 |
| Apr | 27 | 17 |
| May | 23 | 14 |
| Jun | 22 | 12 |
| Jul | 22 | 11 |
| Aug | 25 | 12 |
| Sep | 27 | 15 |
| Oct | 30 | 18 |
| Nov | 31 | 19 |
| Dec | 32 | 21 |
How hot and cold Tres Isletas really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Tres Isletas feels like about 36°C (around January 1). About 110 days a year carry some heat stress, peaking in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 36 | 34 | 32 | 27 | 23 | 22 | 22 | 25 | 27 | 30 | 31 | 34 |
| Air high (°C) | 33 | 32 | 30 | 27 | 23 | 22 | 22 | 25 | 27 | 30 | 31 | 32 |
| Feels-like low (°C) | 22 | 22 | 20 | 17 | 14 | 12 | 11 | 12 | 15 | 18 | 19 | 21 |
| Air low (°C) | 22 | 22 | 20 | 17 | 14 | 12 | 11 | 12 | 15 | 18 | 19 | 21 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 36 | 33 | 22 | 22 |
| Feb | 34 | 32 | 22 | 22 |
| Mar | 32 | 30 | 20 | 20 |
| Apr | 27 | 27 | 17 | 17 |
| May | 23 | 23 | 14 | 14 |
| Jun | 22 | 22 | 12 | 12 |
| Jul | 22 | 22 | 11 | 11 |
| Aug | 25 | 25 | 12 | 12 |
| Sep | 27 | 27 | 15 | 15 |
| Oct | 30 | 30 | 18 | 18 |
| Nov | 31 | 31 | 19 | 19 |
| Dec | 34 | 32 | 21 | 21 |
Average hourly temperature in Tres Isletas
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 January afternoons, near 33°C, and coldest before dawn in June, near 12°C.
Tres Isletas 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 | 33° / 22° | 128 | 11.4 | 13.5 | 3.3 |
| Feb | 32° / 22° | 133 | 11.1 | 12.9 | 3.9 |
| Mar | 30° / 20° | 138 | 11.4 | 12.2 | 4.9 |
| Apr | 27° / 17° | 121 | 9.4 | 11.4 | 6.6 |
| May | 23° / 14° | 60 | 7.4 | 10.7 | 7.3 |
| Jun | 22° / 12° | 44 | 6.8 | 10.4 | 7.1 |
| Jul | 22° / 11° | 34 | 5.6 | 10.5 | 7.6 |
| Aug | 25° / 12° | 41 | 4.7 | 11.1 | 8.1 |
| Sep | 27° / 15° | 58 | 6.6 | 11.8 | 7.1 |
| Oct | 30° / 18° | 125 | 10.2 | 12.6 | 5.3 |
| Nov | 31° / 19° | 141 | 10 | 13.3 | 4.7 |
| Dec | 32° / 21° | 144 | 11.1 | 13.6 | 3.7 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Tres Isletas gets about 1168 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 6.8 months, from around Oct 1 to Apr 24, peaking in February at about 40% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 4.
December is the wettest month by volume, with 144 mm over about 11 wet days; July is the driest, with 34 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 37 | 40 | 37 | 31 | 24 | 23 | 18 | 15 | 23 | 33 | 33 | 35 |
| Rain days | 11 | 11 | 11 | 9 | 7 | 7 | 6 | 5 | 7 | 10 | 10 | 11 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 37 | 11 |
| Feb | 40 | 11 |
| Mar | 37 | 11 |
| Apr | 31 | 9 |
| May | 24 | 7 |
| Jun | 23 | 7 |
| Jul | 18 | 6 |
| Aug | 15 | 5 |
| Sep | 23 | 7 |
| Oct | 33 | 10 |
| Nov | 33 | 10 |
| Dec | 35 | 11 |
Monthly rainfall
Over a full year, Tres Isletas collects about 1168 mm of rain across 106 wet days — roughly 97 mm in an average month.
It doesn’t fall evenly. December is the wettest month with 144 mm, while July is the driest at just 34 mm. The three wettest months alone bring about 36% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 128 | 133 | 138 | 121 | 60 | 44 | 34 | 41 | 58 | 125 | 141 | 144 |
| Rain days | 11 | 11 | 11 | 9 | 7 | 7 | 6 | 5 | 7 | 10 | 10 | 11 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 128 | 11 |
| Feb | 133 | 11 |
| Mar | 138 | 11 |
| Apr | 121 | 9 |
| May | 60 | 7 |
| Jun | 44 | 7 |
| Jul | 34 | 6 |
| Aug | 41 | 5 |
| Sep | 58 | 7 |
| Oct | 125 | 10 |
| Nov | 141 | 10 |
| Dec | 144 | 11 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Tres Isletas, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around July 10 and lasts for 2.8 months, ending around October 2. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 69% of the time on average.
The cloudier part of the year begins around March 28 and lasts for 3.4 months, ending around July 9. The cloudiest month is June, when it is overcast or mostly cloudy 51% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 57 | 57 | 58 | 54 | 51 | 49 | 62 | 69 | 66 | 56 | 59 | 57 |
| Cloudier (%) | 43 | 43 | 42 | 46 | 49 | 51 | 38 | 31 | 34 | 44 | 41 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 57 | 43 |
| Feb | 57 | 43 |
| Mar | 58 | 42 |
| Apr | 54 | 46 |
| May | 51 | 49 |
| Jun | 49 | 51 |
| Jul | 62 | 38 |
| Aug | 69 | 31 |
| Sep | 66 | 34 |
| Oct | 56 | 44 |
| Nov | 59 | 41 |
| Dec | 57 | 43 |
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 December 19, brings about 13 h 42 min of light; the shortest, around June 20, only 10 h 18 min — a swing of roughly 3 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.5 | 12.9 | 12.2 | 11.4 | 10.7 | 10.4 | 10.5 | 11.1 | 11.8 | 12.6 | 13.3 | 13.6 |
| Sunrise (AM) | 6:26 | 6:49 | 7:06 | 7:21 | 7:37 | 7:51 | 7:52 | 7:34 | 7:01 | 6:28 | 6:08 | 6:09 |
| Sunset (PM) | 7:56 | 7:44 | 7:17 | 6:43 | 6:19 | 6:13 | 6:22 | 6:38 | 6:51 | 7:06 | 7:26 | 7:47 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.5 | 6:26 | 7:56 |
| Feb | 12.9 | 6:49 | 7:44 |
| Mar | 12.2 | 7:06 | 7:17 |
| Apr | 11.4 | 7:21 | 6:43 |
| May | 10.7 | 7:37 | 6:19 |
| Jun | 10.4 | 7:51 | 6:13 |
| Jul | 10.5 | 7:52 | 6:22 |
| Aug | 11.1 | 7:34 | 6:38 |
| Sep | 11.8 | 7:01 | 6:51 |
| Oct | 12.6 | 6:28 | 7:06 |
| Nov | 13.3 | 6:08 | 7:26 |
| Dec | 13.6 | 6:09 | 7:47 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Tres Isletas averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 11 and 19 days.
The sunnier stretch runs 3.2 months, from around Jul 6 to Oct 9. The sunniest month is August, with roughly 18 sunny days (bright).
The greyest month is May, down near 11 sunny days — about 36% fewer than the August peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 13 | 12 | 13 | 12 | 12 | 11 | 15 | 18 | 17 | 13 | 12 | 12 |
| Sky | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Bright | Bright | Bright | Mixed | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 13 | Mixed |
| Feb | 12 | Mixed |
| Mar | 13 | Mixed |
| Apr | 12 | Mixed |
| May | 12 | Mixed |
| Jun | 11 | Mixed |
| Jul | 15 | Bright |
| Aug | 18 | Bright |
| Sep | 17 | Bright |
| Oct | 13 | Mixed |
| Nov | 12 | Mixed |
| Dec | 12 | Mixed |
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 Tres Isletas, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.4 months, from around October 18 to April 30. The muggiest month is February, when the air feels humid, muggy or worse about 92% of the time.
The most comfortable stretch runs from around May 1 to October 17, and August is the most comfortable month — the air is dry or comfortable 86% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 2 | 2 | 2 | 15 | 40 | 51 | 67 | 69 | 56 | 28 | 15 | 4 |
| Comfortable (%) | 6 | 7 | 10 | 16 | 18 | 15 | 16 | 17 | 20 | 19 | 17 | 10 |
| Humid (%) | 14 | 15 | 19 | 22 | 19 | 21 | 14 | 11 | 14 | 23 | 22 | 20 |
| Muggy (%) | 27 | 28 | 30 | 27 | 16 | 12 | 3 | 2 | 9 | 24 | 28 | 28 |
| Oppressive (%) | 43 | 42 | 36 | 19 | 7 | 1 | 0 | 0 | 0 | 7 | 17 | 34 |
| Miserable (%) | 7 | 7 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 2 | 6 | 14 | 27 | 43 | 7 |
| Feb | 2 | 7 | 15 | 28 | 42 | 7 |
| Mar | 2 | 10 | 19 | 30 | 36 | 3 |
| Apr | 15 | 16 | 22 | 27 | 19 | 1 |
| May | 40 | 18 | 19 | 16 | 7 | 0 |
| Jun | 51 | 15 | 21 | 12 | 1 | 0 |
| Jul | 67 | 16 | 14 | 3 | 0 | 0 |
| Aug | 69 | 17 | 11 | 2 | 0 | 0 |
| Sep | 56 | 20 | 14 | 9 | 0 | 0 |
| Oct | 28 | 19 | 23 | 24 | 7 | 0 |
| Nov | 15 | 17 | 22 | 28 | 17 | 1 |
| Dec | 4 | 10 | 20 | 28 | 34 | 4 |
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.
Across the year, average wind speed in Tres Isletas is typically calm, near 11 km/h, and varies little with the seasons.
The windier part of the year lasts 4.8 months, from around Jul 10 to Dec 2. The windiest month is August, averaging about 12 km/h (light breeze).
The calmer part of the year runs from around Dec 3 to Jul 9, with March the calmest month at about 10 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 13 | 12 | 12 | 11 |
| Feels | calm | calm | calm | calm | calm | calm | calm | light breeze | light breeze | light breeze | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 10 | calm |
| Feb | 10 | calm |
| Mar | 10 | calm |
| Apr | 10 | calm |
| May | 10 | calm |
| Jun | 10 | calm |
| Jul | 11 | calm |
| Aug | 12 | light breeze |
| Sep | 13 | light breeze |
| Oct | 12 | light breeze |
| Nov | 12 | calm |
| Dec | 11 | calm |
Best time to visit Tres Isletas
To characterize how pleasant the weather is in Tres Isletas throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late April, Tres Isletas is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
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 Tres Isletas for general outdoor tourist activities is from mid April to late September, with a peak score in the first week of August.
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) | 3.3 | 3.9 | 4.9 | 6.6 | 7.3 | 7.1 | 7.6 | 8.0 | 7.1 | 5.3 | 4.7 | 3.8 |
| Rating | poor | fair | fair | good | good | good | ideal | ideal | good | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 3.3 | poor |
| Feb | 3.9 | fair |
| Mar | 4.9 | fair |
| Apr | 6.6 | good |
| May | 7.3 | good |
| Jun | 7.1 | good |
| Jul | 7.6 | ideal |
| Aug | 8.0 | ideal |
| Sep | 7.1 | good |
| Oct | 5.3 | fair |
| Nov | 4.7 | fair |
| Dec | 3.8 | fair |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Tres Isletas for hot-weather activities run from early February to mid May and again from late July to late December, with a peak score in the first week of September.
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 Tres Isletas, 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.
For a warm-season trip around January (highs near 33°C), the essentials are light clothes, rain gear and sun protection. In the cold season around June (highs near 22°C), pack a light layer.
In January, Tres Isletas sees daytime highs around 33°C and nights near 22°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.
UV index (midday) in Tres Isletas 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 Tres Isletas peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 4 (moderate).
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) | 15 | 14 | 12 | 9 | 6 | 5 | 4 | 5 | 8 | 7 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | High | Very high | High | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 5 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | High |
| Sep | 8 | Very high |
| Oct | 7 | High |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in Tres Isletas
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 January the burn window is concentrated in the middle of the day: about 9 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 | 5.5 | 4.5 | 4 | 5 | 6.5 | 7 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 7 | 6 | 4.5 | 0 | 0 | 0 | 0 | 4 | 3.5 | 6.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 7 |
| Mar | 8 | 6 |
| Apr | 7 | 4.5 |
| May | 5.5 | 0 |
| Jun | 4.5 | 0 |
| Jul | 4 | 0 |
| Aug | 5 | 0 |
| Sep | 6.5 | 4 |
| Oct | 7 | 3.5 |
| Nov | 8.5 | 6.5 |
| Dec | 9 | 7 |
Air quality in Tres Isletas by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Tres Isletas is worst in August — around 31 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (April, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 10 | 8 | 6 | 6 | 7 | 15 | 31 | 29 | 18 | 10 | 9 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 8 | Good |
| Apr | 6 | Good |
| May | 6 | Good |
| Jun | 7 | Good |
| Jul | 15 | Moderate |
| Aug | 31 | Moderate |
| Sep | 29 | Moderate |
| Oct | 18 | Moderate |
| Nov | 10 | Good |
| Dec | 9 | Good |
Growing season
Tres Isletas 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 | 98 | 96 | 98 | 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 | 98 | 0 |
| Jul | 96 | 0 |
| Aug | 98 | 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. Tres Isletas banks about 4,523 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 549 | 470 | 471 | 366 | 272 | 206 | 192 | 270 | 333 | 423 | 449 | 522 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 549 |
| Feb | 470 |
| Mar | 471 |
| Apr | 366 |
| May | 272 |
| Jun | 206 |
| Jul | 192 |
| Aug | 270 |
| Sep | 333 |
| Oct | 423 |
| Nov | 449 |
| Dec | 522 |
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.
Tres Isletas receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.6 and 6.9 kWh/m².
The brighter stretch of the year lasts 6.3 months, from around Sep 13 to Mar 22. The brightest month is December, averaging about 6.7 kWh/m² (intense).
The dimmest month is June, down near 2.7 kWh/m² — roughly 60% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.7 | 6.0 | 5.1 | 3.9 | 3.1 | 2.7 | 3.1 | 4.1 | 4.9 | 5.5 | 6.4 | 6.7 |
| Level | Intense | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.7 | Intense |
| Feb | 6.0 | Bright |
| Mar | 5.1 | Bright |
| Apr | 3.9 | Moderate |
| May | 3.1 | Moderate |
| Jun | 2.7 | Moderate |
| Jul | 3.1 | Moderate |
| Aug | 4.1 | Bright |
| Sep | 4.9 | Bright |
| Oct | 5.5 | Bright |
| Nov | 6.4 | Intense |
| Dec | 6.7 | Intense |
Where is Tres Isletas?
Tres Isletas sits at 26.3°S, 60.4°W, 102 m above sea level, in Argentina. The nearest listed city is Juan José Castelli, 48 km away.
Topography around Tres Isletas
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tres Isletas.
Within 3 km, the terrain around Tres Isletas has only modest variations in elevation — a maximum elevation change of 11 m around an average of 99 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 20 m; within 80 km, only modest variations in elevation — a maximum elevation change of 61 m.
The land around Tres Isletas is covered by cropland (33%), grassland (32%) and trees (21%) within 3 km, trees (48%) and cropland (34%) within 16 km, and trees (61%) and cropland (24%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- 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 Tres Isletas (-26.3407°, -60.4321°, elevation 102 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).