Climate and average weather in Lomas del Sur
In Lomas del Sur, the summers are hot, fairly dry, and mostly clear and the winters are warm and mostly clear.
Over the course of the year, the temperature in Lomas del Sur typically varies from 9°C to 32°C, and is rarely below 5°C or above 35°C. May is the hottest month of the year, while January is the coldest.
Based on the travel score, the best time of year to visit Lomas del Sur for warm-weather activities is from mid October to late March.
- Hottest
- May
- 32°
- Coldest
- Jan
- 9°
- Wettest
- Jul
- 180 mm
- Driest
- Apr
- 5 mm
- Rain / yr
- 721 mm
- 111 wet days
- Daylight
- 10.8–13.2 h
- shortest–longest
- Elevation
- 1,636 m
- 20.5°N
- Clearest
- Mar
- 31% cloud
Lomas del Sur is town in Tlajomulco Municipality, State of Jalisco, Mexico.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Lomas del Sur 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 October to late March.
Temperature through the year
Daily average highs and lows in Lomas del Sur, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 2.4 months, from April 3 to June 13, with daily high temperatures above 30°C. The hottest month of the year in Lomas del Sur is May, with an average high of 32°C and low of 16°C.
The cool season lasts 2.3 months, from December 1 to February 9, with daily high temperatures below 26°C. The coldest month of the year in Lomas del Sur is January, with an average low of 9°C and high of 25°C.
Days typically run about 14°C warmer than nights, with the widest day–night swing (around 18°C) in April.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 27 | 29 | 31 | 32 | 30 | 28 | 27 | 27 | 27 | 26 | 25 |
| Avg low (°C) | 9 | 10 | 11 | 13 | 16 | 18 | 17 | 17 | 17 | 15 | 12 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 25 | 9 |
| Feb | 27 | 10 |
| Mar | 29 | 11 |
| Apr | 31 | 13 |
| May | 32 | 16 |
| Jun | 30 | 18 |
| Jul | 28 | 17 |
| Aug | 27 | 17 |
| Sep | 27 | 17 |
| Oct | 27 | 15 |
| Nov | 26 | 12 |
| Dec | 25 | 9 |
How hot and cold Lomas del Sur 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, Lomas del Sur feels like about 32°C (around May 17). About 37 days a year carry some heat stress, peaking in May.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 24 | 27 | 29 | 31 | 32 | 30 | 28 | 28 | 27 | 27 | 26 | 25 |
| Air high (°C) | 25 | 27 | 29 | 31 | 32 | 30 | 28 | 27 | 27 | 27 | 26 | 25 |
| Feels-like low (°C) | 8 | 9 | 11 | 13 | 16 | 18 | 17 | 17 | 17 | 15 | 12 | 9 |
| Air low (°C) | 9 | 10 | 11 | 13 | 16 | 18 | 17 | 17 | 17 | 15 | 12 | 9 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 24 | 25 | 8 | 9 |
| Feb | 27 | 27 | 9 | 10 |
| Mar | 29 | 29 | 11 | 11 |
| Apr | 31 | 31 | 13 | 13 |
| May | 32 | 32 | 16 | 16 |
| Jun | 30 | 30 | 18 | 18 |
| Jul | 28 | 28 | 17 | 17 |
| Aug | 28 | 27 | 17 | 17 |
| Sep | 27 | 27 | 17 | 17 |
| Oct | 27 | 27 | 15 | 15 |
| Nov | 26 | 26 | 12 | 12 |
| Dec | 25 | 25 | 9 | 9 |
Average hourly temperature in Lomas del Sur
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 May afternoons, near 32°C, and coldest before dawn in January, near 9°C.
Lomas del Sur 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° / 9° | 19 | 2.2 | 10.9 | 8.5 |
| Feb | 27° / 10° | 14 | 2 | 11.3 | 8.2 |
| Mar | 29° / 11° | 7 | 1.2 | 11.9 | 7.0 |
| Apr | 31° / 13° | 5 | 1.3 | 12.5 | 5.5 |
| May | 32° / 16° | 16 | 4.4 | 13 | 4.5 |
| Jun | 30° / 18° | 113 | 17.5 | 13.2 | 4.0 |
| Jul | 28° / 17° | 180 | 25.2 | 13.1 | 4.2 |
| Aug | 27° / 17° | 157 | 24.1 | 12.7 | 4.3 |
| Sep | 27° / 17° | 139 | 20.2 | 12.1 | 4.9 |
| Oct | 27° / 15° | 50 | 8.3 | 11.5 | 6.8 |
| Nov | 26° / 12° | 15 | 2.4 | 11 | 8.2 |
| Dec | 25° / 9° | 8 | 1.7 | 10.8 | 8.5 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Lomas del Sur gets about 721 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 4.4 months, from around Jun 2 to Oct 14, peaking in July at about 81% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Feb 27.
July is the wettest month by volume, with 180 mm over about 25 wet days; April is the driest, with 5 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 8 | 7 | 4 | 4 | 15 | 58 | 80 | 78 | 65 | 29 | 8 | 5 |
| Rain days | 2 | 2 | 1 | 1 | 4 | 18 | 25 | 24 | 20 | 8 | 2 | 2 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 8 | 2 |
| Feb | 7 | 2 |
| Mar | 4 | 1 |
| Apr | 4 | 1 |
| May | 15 | 4 |
| Jun | 58 | 18 |
| Jul | 80 | 25 |
| Aug | 78 | 24 |
| Sep | 65 | 20 |
| Oct | 29 | 8 |
| Nov | 8 | 2 |
| Dec | 5 | 2 |
Monthly rainfall
Over a full year, Lomas del Sur collects about 721 mm of rain across 111 wet days — roughly 60 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 180 mm, while April is the driest at just 5 mm. The three wettest months alone bring about 66% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 19 | 14 | 7 | 5 | 16 | 113 | 180 | 157 | 139 | 50 | 15 | 8 |
| Rain days | 2 | 2 | 1 | 1 | 4 | 18 | 25 | 24 | 20 | 8 | 2 | 2 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 19 | 2 |
| Feb | 14 | 2 |
| Mar | 7 | 1 |
| Apr | 5 | 1 |
| May | 16 | 4 |
| Jun | 113 | 18 |
| Jul | 180 | 25 |
| Aug | 157 | 24 |
| Sep | 139 | 20 |
| Oct | 50 | 8 |
| Nov | 15 | 2 |
| Dec | 8 | 2 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Lomas del Sur, 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 October 20 and lasts for 7.6 months, ending around June 8. The clearest month is March, when the sky is clear, mostly clear, or partly cloudy 79% of the time on average.
The cloudier part of the year begins around June 9 and lasts for 4.4 months, ending around October 19. The cloudiest month is September, when it is overcast or mostly cloudy 69% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 68 | 75 | 79 | 73 | 75 | 49 | 36 | 35 | 31 | 55 | 76 | 67 |
| Cloudier (%) | 32 | 25 | 21 | 27 | 25 | 51 | 64 | 65 | 69 | 45 | 24 | 33 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 68 | 32 |
| Feb | 75 | 25 |
| Mar | 79 | 21 |
| Apr | 73 | 27 |
| May | 75 | 25 |
| Jun | 49 | 51 |
| Jul | 36 | 64 |
| Aug | 35 | 65 |
| Sep | 31 | 69 |
| Oct | 55 | 45 |
| Nov | 76 | 24 |
| Dec | 67 | 33 |
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 June 2, brings about 13 h 12 min of light; the shortest, around January 1, only 10 h 48 min — a swing of roughly 2 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.9 | 11.3 | 11.9 | 12.5 | 13.0 | 13.2 | 13.1 | 12.7 | 12.1 | 11.5 | 11.0 | 10.8 |
| Sunrise (AM) | 7:36 | 7:29 | 7:08 | 6:40 | 6:21 | 6:17 | 6:25 | 6:37 | 6:45 | 6:53 | 7:09 | 7:27 |
| Sunset (PM) | 6:29 | 6:47 | 6:59 | 7:08 | 7:19 | 7:31 | 7:33 | 7:19 | 6:51 | 6:24 | 6:09 | 6:13 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.9 | 7:36 | 6:29 |
| Feb | 11.3 | 7:29 | 6:47 |
| Mar | 11.9 | 7:08 | 6:59 |
| Apr | 12.5 | 6:40 | 7:08 |
| May | 13.0 | 6:21 | 7:19 |
| Jun | 13.2 | 6:17 | 7:31 |
| Jul | 13.1 | 6:25 | 7:33 |
| Aug | 12.7 | 6:37 | 7:19 |
| Sep | 12.1 | 6:45 | 6:51 |
| Oct | 11.5 | 6:53 | 6:24 |
| Nov | 11.0 | 7:09 | 6:09 |
| Dec | 10.8 | 7:27 | 6:13 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Lomas del Sur averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 21 days.
The sunnier stretch runs 7.6 months, from around Oct 20 to Jun 6. The sunniest month is March, with roughly 20 sunny days (bright).
The greyest month is July, down near 3 sunny days — about 85% fewer than the March peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 17 | 17 | 20 | 17 | 17 | 8 | 3 | 3 | 4 | 11 | 18 | 17 |
| Sky | Bright | Bright | Bright | Bright | Bright | Gloomy | Gloomy | Gloomy | Gloomy | Mixed | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 17 | Bright |
| Feb | 17 | Bright |
| Mar | 20 | Bright |
| Apr | 17 | Bright |
| May | 17 | Bright |
| Jun | 8 | Gloomy |
| Jul | 3 | Gloomy |
| Aug | 3 | Gloomy |
| Sep | 4 | Gloomy |
| Oct | 11 | Mixed |
| Nov | 18 | Bright |
| Dec | 17 | Bright |
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 Lomas del Sur, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 4.4 months, from around June 5 to October 16. The muggiest month is August, when the air feels humid, muggy or worse about 87% of the time.
The most comfortable stretch runs from around October 17 to June 4, and March 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 (%) | 100 | 100 | 100 | 99 | 83 | 20 | 1 | 0 | 4 | 32 | 79 | 98 |
| Comfortable (%) | 0 | 0 | 0 | 1 | 13 | 26 | 16 | 13 | 20 | 39 | 19 | 2 |
| Humid (%) | 0 | 0 | 0 | 0 | 4 | 51 | 82 | 85 | 73 | 30 | 2 | 0 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 3 | 3 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 100 | 0 | 0 | 0 |
| Feb | 100 | 0 | 0 | 0 |
| Mar | 100 | 0 | 0 | 0 |
| Apr | 99 | 1 | 0 | 0 |
| May | 83 | 13 | 4 | 0 |
| Jun | 20 | 26 | 51 | 2 |
| Jul | 1 | 16 | 82 | 2 |
| Aug | 0 | 13 | 85 | 3 |
| Sep | 4 | 20 | 73 | 3 |
| Oct | 32 | 39 | 30 | 0 |
| Nov | 79 | 19 | 2 | 0 |
| Dec | 98 | 2 | 0 | 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 Lomas del Sur is steady company: average speeds sit near 6 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) | 6 | 6 | 7 | 7 | 6 | 5 | 4 | 5 | 5 | 6 | 6 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 6 | calm |
| Feb | 6 | calm |
| Mar | 7 | calm |
| Apr | 7 | calm |
| May | 6 | calm |
| Jun | 5 | calm |
| Jul | 4 | calm |
| Aug | 5 | calm |
| Sep | 5 | calm |
| Oct | 6 | calm |
| Nov | 6 | calm |
| Dec | 5 | calm |
Hazard calendar for Lomas del Sur
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Lomas del Sur's rainy season runs June–September, when most of the year's rain falls.
Best time to visit Lomas del Sur
To characterize how pleasant the weather is in Lomas del Sur throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late October, Lomas del Sur 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 Lomas del Sur for general outdoor tourist activities is from mid October to late March, with a peak score in the second week of January.
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) | 8.5 | 8.2 | 7.0 | 5.5 | 4.5 | 4.1 | 4.2 | 4.3 | 4.9 | 6.7 | 8.2 | 8.5 |
| Rating | ideal | ideal | good | fair | fair | fair | fair | fair | fair | good | ideal | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 8.5 | ideal |
| Feb | 8.2 | ideal |
| Mar | 7.0 | good |
| Apr | 5.5 | fair |
| May | 4.5 | fair |
| Jun | 4.1 | fair |
| Jul | 4.2 | fair |
| Aug | 4.3 | fair |
| Sep | 4.9 | fair |
| Oct | 6.7 | good |
| Nov | 8.2 | ideal |
| Dec | 8.5 | 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 Lomas del Sur for hot-weather activities is from late October to late May, with a peak score in the third week of March.
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 Lomas del Sur, 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 May (highs near 32°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 25°C), pack light clothes and sun protection.
In May, Lomas del Sur sees daytime highs around 32°C and nights near 16°C. Pack light clothes and sun protection. About 4 days see rain.
UV index (midday) in Lomas del Sur 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 Lomas del Sur peaks around May 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (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) | 8 | 11 | 13 | 14 | 14 | 13 | 12 | 13 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 14 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Average hourly UV index in Lomas del Sur
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 May the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 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) | 6.5 | 7 | 8 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8 | 7 | 6 | 6 |
| UV ≥ 6 (h/day) | 4 | 5 | 6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6 | 5 | 3.5 | 2.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 6.5 | 4 |
| Feb | 7 | 5 |
| Mar | 8 | 6 |
| Apr | 8.5 | 6.5 |
| May | 8.5 | 6.5 |
| Jun | 8.5 | 6.5 |
| Jul | 8.5 | 6.5 |
| Aug | 8.5 | 6.5 |
| Sep | 8 | 6 |
| Oct | 7 | 5 |
| Nov | 6 | 3.5 |
| Dec | 6 | 2.5 |
Air quality in Lomas del Sur 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 Lomas del Sur is worst in May — around 44 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (July, 14 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) | 20 | 18 | 20 | 33 | 44 | 17 | 14 | 15 | 17 | 17 | 18 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 18 | Moderate |
| Mar | 20 | Moderate |
| Apr | 33 | Moderate |
| May | 44 | Poor |
| Jun | 17 | Moderate |
| Jul | 14 | Moderate |
| Aug | 15 | Moderate |
| Sep | 17 | Moderate |
| Oct | 17 | Moderate |
| Nov | 18 | Moderate |
| Dec | 21 | Moderate |
Growing season
Lomas del Sur 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. Lomas del Sur banks about 3,904 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 205 | 229 | 312 | 365 | 432 | 414 | 379 | 376 | 356 | 342 | 271 | 222 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 205 |
| Feb | 229 |
| Mar | 312 |
| Apr | 365 |
| May | 432 |
| Jun | 414 |
| Jul | 379 |
| Aug | 376 |
| Sep | 356 |
| Oct | 342 |
| Nov | 271 |
| Dec | 222 |
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.
Lomas del Sur receives about 5.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.7 and 7.6 kWh/m².
The brighter stretch of the year lasts 4.2 months, from around Feb 16 to Jun 23. The brightest month is April, averaging about 7.5 kWh/m² (intense).
The dimmest month is December, down near 4.7 kWh/m² — roughly 37% less than the April peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 5.9 | 6.9 | 7.6 | 7.5 | 6.2 | 5.9 | 5.8 | 5.3 | 5.3 | 5.0 | 4.7 |
| Level | Bright | Bright | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.0 | Bright |
| Feb | 5.9 | Bright |
| Mar | 6.9 | Intense |
| Apr | 7.6 | Intense |
| May | 7.5 | Intense |
| Jun | 6.2 | Intense |
| Jul | 5.9 | Bright |
| Aug | 5.8 | Bright |
| Sep | 5.3 | Bright |
| Oct | 5.3 | Bright |
| Nov | 5.0 | Bright |
| Dec | 4.7 | Bright |
Where is Lomas del Sur?
Lomas del Sur sits at 20.5°N, 103.4°W, 1,636 m above sea level, in Mexico. The nearest listed city is Tlajomulco de Zúñiga, 4.0 km away.
Topography around Lomas del Sur
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Lomas del Sur.
Within 3 km, the terrain around Lomas del Sur has significant variations in elevation — a maximum elevation change of 543 m around an average of 1,634 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,463 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,409 m.
The land around Lomas del Sur is covered by grassland (26%), artificial surfaces (24%) and cropland (22%) within 3 km, trees (25%), artificial surfaces (25%) and cropland (22%) within 16 km, and trees (36%) and cropland (21%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- 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 Lomas del Sur (20.4925°, -103.4175°, elevation 1,636 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).