Climate and average weather in San Lorenzo
In San Lorenzo, the summers are humid, hot, showery, and mostly clear and the winters are mild and mostly clear.
Over the course of the year, the temperature in San Lorenzo typically varies from 10°C to 32°C, and is rarely below 3°C or above 36°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit San Lorenzo for warm-weather activities is from late March to early November.
- Hottest
- Jan
- 32°
- Coldest
- Jul
- 10°
- Wettest
- Oct
- 191 mm
- Driest
- Jul
- 71 mm
- Rain / yr
- 1553 mm
- 109 wet days
- Daylight
- 10.2–13.8 h
- shortest–longest
- Elevation
- 63 m
- 28.1°S
- Clearest
- Aug
- 40% cloud
San Lorenzo is human settlement in Argentina.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
San Lorenzo 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 late March to early November.
Temperature through the year
Daily average highs and lows in San Lorenzo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.0 months, from November 18 to March 20, with daily high temperatures above 29°C. The hottest month of the year in San Lorenzo is January, with an average high of 32°C and low of 22°C.
The cool season lasts 2.9 months, from May 18 to August 12, with daily high temperatures below 22°C. The coldest month of the year in San Lorenzo is July, with an average low of 10°C and high of 20°C.
Days typically run about 10°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 29 | 26 | 23 | 20 | 20 | 23 | 25 | 27 | 29 | 31 |
| Avg low (°C) | 22 | 21 | 20 | 17 | 14 | 12 | 10 | 11 | 13 | 16 | 18 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 32 | 22 |
| Feb | 31 | 21 |
| Mar | 29 | 20 |
| Apr | 26 | 17 |
| May | 23 | 14 |
| Jun | 20 | 12 |
| Jul | 20 | 10 |
| Aug | 23 | 11 |
| Sep | 25 | 13 |
| Oct | 27 | 16 |
| Nov | 29 | 18 |
| Dec | 31 | 20 |
How hot and cold San Lorenzo 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, San Lorenzo feels like about 34°C (around January 4). About 83 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) | 34 | 33 | 31 | 26 | 22 | 20 | 20 | 23 | 25 | 27 | 29 | 32 |
| Air high (°C) | 32 | 31 | 29 | 26 | 23 | 20 | 20 | 23 | 25 | 27 | 29 | 31 |
| Feels-like low (°C) | 22 | 21 | 20 | 17 | 14 | 12 | 9 | 11 | 13 | 16 | 18 | 20 |
| Air low (°C) | 22 | 21 | 20 | 17 | 14 | 12 | 10 | 11 | 13 | 16 | 18 | 20 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 34 | 32 | 22 | 22 |
| Feb | 33 | 31 | 21 | 21 |
| Mar | 31 | 29 | 20 | 20 |
| Apr | 26 | 26 | 17 | 17 |
| May | 22 | 23 | 14 | 14 |
| Jun | 20 | 20 | 12 | 12 |
| Jul | 20 | 20 | 9 | 10 |
| Aug | 23 | 23 | 11 | 11 |
| Sep | 25 | 25 | 13 | 13 |
| Oct | 27 | 27 | 16 | 16 |
| Nov | 29 | 29 | 18 | 18 |
| Dec | 32 | 31 | 20 | 20 |
Average hourly temperature in San Lorenzo
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 32°C, and coldest before dawn in July, near 10°C.
San Lorenzo 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 | 32° / 22° | 148 | 11 | 13.6 | 4.1 |
| Feb | 31° / 21° | 136 | 10.1 | 13 | 4.5 |
| Mar | 29° / 20° | 143 | 10.2 | 12.2 | 5.4 |
| Apr | 26° / 17° | 168 | 9.8 | 11.3 | 6.8 |
| May | 23° / 14° | 112 | 7.8 | 10.6 | 7.2 |
| Jun | 20° / 12° | 80 | 7.8 | 10.2 | 6.7 |
| Jul | 20° / 10° | 71 | 7.2 | 10.4 | 7.0 |
| Aug | 23° / 11° | 75 | 6.7 | 11 | 7.6 |
| Sep | 25° / 13° | 109 | 8.4 | 11.8 | 7.4 |
| Oct | 27° / 16° | 191 | 11 | 12.7 | 6.5 |
| Nov | 29° / 18° | 160 | 9 | 13.4 | 5.9 |
| Dec | 31° / 20° | 160 | 10 | 13.8 | 4.6 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
San Lorenzo gets about 1553 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 1.5 months, from around Sep 27 to Nov 10, peaking in October at about 38% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 31.
October is the wettest month by volume, with 191 mm over about 11 wet days; July is the driest, with 71 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 35 | 37 | 33 | 32 | 25 | 26 | 23 | 22 | 28 | 36 | 30 | 32 |
| Rain days | 11 | 10 | 10 | 10 | 8 | 8 | 7 | 7 | 8 | 11 | 9 | 10 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 35 | 11 |
| Feb | 37 | 10 |
| Mar | 33 | 10 |
| Apr | 32 | 10 |
| May | 25 | 8 |
| Jun | 26 | 8 |
| Jul | 23 | 7 |
| Aug | 22 | 7 |
| Sep | 28 | 8 |
| Oct | 36 | 11 |
| Nov | 30 | 9 |
| Dec | 32 | 10 |
Monthly rainfall
Over a full year, San Lorenzo collects about 1553 mm of rain across 109 wet days — roughly 129 mm in an average month.
It doesn’t fall evenly. October is the wettest month with 191 mm, while July is the driest at just 71 mm. The three wettest months alone bring about 33% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 148 | 136 | 143 | 168 | 112 | 80 | 71 | 75 | 109 | 191 | 160 | 160 |
| Rain days | 11 | 10 | 10 | 10 | 8 | 8 | 7 | 7 | 8 | 11 | 9 | 10 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 148 | 11 |
| Feb | 136 | 10 |
| Mar | 143 | 10 |
| Apr | 168 | 10 |
| May | 112 | 8 |
| Jun | 80 | 8 |
| Jul | 71 | 7 |
| Aug | 75 | 7 |
| Sep | 109 | 8 |
| Oct | 191 | 11 |
| Nov | 160 | 9 |
| Dec | 160 | 10 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In San Lorenzo, 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 9 and lasts for 2.5 months, ending around September 23. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 64% of the time on average.
The cloudier part of the year begins around April 4 and lasts for 3.2 months, ending around July 8. 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 (%) | 59 | 60 | 59 | 57 | 52 | 49 | 61 | 64 | 61 | 55 | 61 | 60 |
| Cloudier (%) | 41 | 40 | 41 | 43 | 48 | 51 | 39 | 36 | 39 | 45 | 39 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 59 | 41 |
| Feb | 60 | 40 |
| Mar | 59 | 41 |
| Apr | 57 | 43 |
| May | 52 | 48 |
| Jun | 49 | 51 |
| Jul | 61 | 39 |
| Aug | 64 | 36 |
| Sep | 61 | 39 |
| Oct | 55 | 45 |
| Nov | 61 | 39 |
| Dec | 60 | 40 |
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 48 min of light; the shortest, around June 12, only 10 h 12 min — a swing of roughly 3 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.6 | 13.0 | 12.2 | 11.3 | 10.6 | 10.2 | 10.4 | 11.0 | 11.8 | 12.7 | 13.4 | 13.8 |
| Sunrise (AM) | 6:16 | 6:40 | 6:58 | 7:15 | 7:33 | 7:49 | 7:49 | 7:29 | 6:54 | 6:20 | 5:58 | 5:58 |
| Sunset (PM) | 7:52 | 7:40 | 7:11 | 6:35 | 6:10 | 6:02 | 6:12 | 6:29 | 6:44 | 7:01 | 7:23 | 7:45 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.6 | 6:16 | 7:52 |
| Feb | 13.0 | 6:40 | 7:40 |
| Mar | 12.2 | 6:58 | 7:11 |
| Apr | 11.3 | 7:15 | 6:35 |
| May | 10.6 | 7:33 | 6:10 |
| Jun | 10.2 | 7:49 | 6:02 |
| Jul | 10.4 | 7:49 | 6:12 |
| Aug | 11.0 | 7:29 | 6:29 |
| Sep | 11.8 | 6:54 | 6:44 |
| Oct | 12.7 | 6:20 | 7:01 |
| Nov | 13.4 | 5:58 | 7:23 |
| Dec | 13.8 | 5:58 | 7:45 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
San Lorenzo averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 11 and 17 days.
The sunnier stretch runs 2.7 months, from around Jul 8 to Sep 28. The sunniest month is August, with roughly 16 sunny days (bright).
The greyest month is June, down near 11 sunny days — about 32% fewer than the August peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 14 | 12 | 14 | 13 | 12 | 11 | 15 | 17 | 15 | 13 | 14 | 13 |
| Sky | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Bright | Bright | Mixed | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 14 | Mixed |
| Feb | 12 | Mixed |
| Mar | 14 | Mixed |
| Apr | 13 | Mixed |
| May | 12 | Mixed |
| Jun | 11 | Mixed |
| Jul | 15 | Mixed |
| Aug | 17 | Bright |
| Sep | 15 | Bright |
| Oct | 13 | Mixed |
| Nov | 14 | Mixed |
| Dec | 13 | 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 San Lorenzo, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.3 months, from around October 18 to April 26. The muggiest month is January, when the air feels humid, muggy or worse about 90% of the time.
The most comfortable stretch runs from around April 27 to October 17, and July is the most comfortable month — the air is dry or comfortable 82% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 3 | 3 | 6 | 19 | 43 | 54 | 65 | 63 | 52 | 27 | 16 | 6 |
| Comfortable (%) | 7 | 8 | 12 | 19 | 20 | 18 | 17 | 20 | 21 | 22 | 20 | 13 |
| Humid (%) | 16 | 15 | 24 | 24 | 18 | 19 | 15 | 14 | 18 | 24 | 26 | 24 |
| Muggy (%) | 31 | 32 | 30 | 23 | 15 | 9 | 3 | 3 | 8 | 20 | 25 | 28 |
| Oppressive (%) | 37 | 35 | 26 | 15 | 3 | 1 | 0 | 0 | 1 | 7 | 12 | 26 |
| Miserable (%) | 6 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 3 | 7 | 16 | 31 | 37 | 6 |
| Feb | 3 | 8 | 15 | 32 | 35 | 6 |
| Mar | 6 | 12 | 24 | 30 | 26 | 3 |
| Apr | 19 | 19 | 24 | 23 | 15 | 0 |
| May | 43 | 20 | 18 | 15 | 3 | 0 |
| Jun | 54 | 18 | 19 | 9 | 1 | 0 |
| Jul | 65 | 17 | 15 | 3 | 0 | 0 |
| Aug | 63 | 20 | 14 | 3 | 0 | 0 |
| Sep | 52 | 21 | 18 | 8 | 1 | 0 |
| Oct | 27 | 22 | 24 | 20 | 7 | 0 |
| Nov | 16 | 20 | 26 | 25 | 12 | 1 |
| Dec | 6 | 13 | 24 | 28 | 26 | 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 San Lorenzo is typically light breeze, near 13 km/h, and varies little with the seasons.
The windier part of the year lasts 5.5 months, from around Jun 11 to Nov 24. The windiest month is September, averaging about 15 km/h (light breeze).
The calmer part of the year runs from around Nov 25 to Jun 10, with February the calmest month at about 12 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 15 | 15 | 15 | 14 | 13 |
| Feels | light breeze | calm | calm | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 12 | light breeze |
| Feb | 12 | calm |
| Mar | 12 | calm |
| Apr | 12 | light breeze |
| May | 13 | light breeze |
| Jun | 13 | light breeze |
| Jul | 14 | light breeze |
| Aug | 15 | light breeze |
| Sep | 15 | light breeze |
| Oct | 15 | light breeze |
| Nov | 14 | light breeze |
| Dec | 13 | light breeze |
Best time to visit San Lorenzo
To characterize how pleasant the weather is in San Lorenzo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early April, San Lorenzo 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 San Lorenzo for general outdoor tourist activities is from late March to early November, with a peak score in the last 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) | 4.1 | 4.5 | 5.4 | 6.8 | 7.1 | 6.7 | 7.0 | 7.6 | 7.4 | 6.5 | 5.9 | 4.6 |
| Rating | fair | fair | fair | good | good | good | good | ideal | good | good | good | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 4.1 | fair |
| Feb | 4.5 | fair |
| Mar | 5.4 | fair |
| Apr | 6.8 | good |
| May | 7.1 | good |
| Jun | 6.7 | good |
| Jul | 7.0 | good |
| Aug | 7.6 | ideal |
| Sep | 7.4 | good |
| Oct | 6.5 | good |
| Nov | 5.9 | good |
| Dec | 4.6 | fair |
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 San Lorenzo for hot-weather activities is from late August to mid May, with a peak score in the third week of November.
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 San Lorenzo, 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 32°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 20°C), pack a light layer.
In January, San Lorenzo sees daytime highs around 32°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 San Lorenzo 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 San Lorenzo peaks around January 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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) | 14 | 14 | 11 | 8 | 5 | 4 | 4 | 5 | 8 | 6 | 11 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Very high | High | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 5 | High |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 11 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in San Lorenzo
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 | 6.5 | 4.5 | 3.5 | 4 | 5 | 6.5 | 6.5 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 5.5 | 3.5 | 0 | 0 | 0 | 0 | 3.5 | 2.5 | 6 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 8 | 5.5 |
| Apr | 6.5 | 3.5 |
| May | 4.5 | 0 |
| Jun | 3.5 | 0 |
| Jul | 4 | 0 |
| Aug | 5 | 0 |
| Sep | 6.5 | 3.5 |
| Oct | 6.5 | 2.5 |
| Nov | 8.5 | 6 |
| Dec | 9 | 6.5 |
Air quality in San Lorenzo 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 San Lorenzo is worst in August — around 16 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (May, 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) | 11 | 14 | 7 | 7 | 6 | 7 | 9 | 16 | 14 | 9 | 7 | 6 |
| Level | Good | Moderate | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 14 | Moderate |
| Mar | 7 | Good |
| Apr | 7 | Good |
| May | 6 | Good |
| Jun | 7 | Good |
| Jul | 9 | Good |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 9 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Growing season
San Lorenzo 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. San Lorenzo banks about 4,078 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) | 519 | 450 | 450 | 343 | 248 | 179 | 159 | 218 | 268 | 357 | 402 | 485 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 519 |
| Feb | 450 |
| Mar | 450 |
| Apr | 343 |
| May | 248 |
| Jun | 179 |
| Jul | 159 |
| Aug | 218 |
| Sep | 268 |
| Oct | 357 |
| Nov | 402 |
| Dec | 485 |
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.
San Lorenzo receives about 4.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.5 and 7.0 kWh/m².
The brighter stretch of the year lasts 6.1 months, from around Sep 19 to Mar 24. The brightest month is December, averaging about 6.9 kWh/m² (intense).
The dimmest month is June, down near 2.6 kWh/m² — roughly 62% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.8 | 6.1 | 5.2 | 4.0 | 3.0 | 2.6 | 3.0 | 3.9 | 4.8 | 5.5 | 6.7 | 6.9 |
| Level | Intense | Intense | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.8 | Intense |
| Feb | 6.1 | Intense |
| Mar | 5.2 | Bright |
| Apr | 4.0 | Bright |
| May | 3.0 | Moderate |
| Jun | 2.6 | Moderate |
| Jul | 3.0 | Moderate |
| Aug | 3.9 | Moderate |
| Sep | 4.8 | Bright |
| Oct | 5.5 | Bright |
| Nov | 6.7 | Intense |
| Dec | 6.9 | Intense |
Where is San Lorenzo?
San Lorenzo sits at 28.1°S, 58.8°W, 63 m above sea level, in Argentina. The nearest listed city is Saladas, 19 km away.
Topography around San Lorenzo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Lorenzo.
Within 3 km, the terrain around San Lorenzo has only modest variations in elevation — a maximum elevation change of 23 m around an average of 61 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 75 m.
The land around San Lorenzo is covered by grassland (59%) and trees (33%) within 3 km, grassland (57%) and trees (23%) within 16 km, and grassland (44%), trees (24%) and wetland (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 San Lorenzo (-28.1344°, -58.7668°, elevation 63 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).