Climate and average weather in San Juan de los Lagos
In San Juan de los Lagos, 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 San Juan de los Lagos typically varies from 8°C to 31°C, and is rarely below 4°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 San Juan de los Lagos for warm-weather activities is from mid October to late March.
- Hottest
- May
- 31°
- Coldest
- Jan
- 8°
- Wettest
- Jul
- 153 mm
- Driest
- Apr
- 5 mm
- Rain / yr
- 633 mm
- 88 wet days
- Daylight
- 10.7–13.3 h
- shortest–longest
- Elevation
- 1,749 m
- 21.2°N
- Clearest
- Mar
- 32% cloud
San Juan de los Lagos is municipal seat of San Juan, State of Jalisco, Mexico.
- Density
- 56/km²
- people per km²
- Founded
- 1542
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
San Juan de los Lagos 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 San Juan de los Lagos, 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 6 to June 17, with daily high temperatures above 29°C. The hottest month of the year in San Juan de los Lagos is May, with an average high of 31°C and low of 17°C.
The cool season lasts 2.2 months, from December 3 to February 8, with daily high temperatures below 24°C. The coldest month of the year in San Juan de los Lagos is January, with an average low of 8°C and high of 23°C.
Days typically run about 14°C warmer than nights, with the widest day–night swing (around 16°C) in March.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 25 | 28 | 30 | 31 | 30 | 27 | 27 | 26 | 27 | 25 | 24 |
| Avg low (°C) | 8 | 10 | 12 | 14 | 17 | 17 | 16 | 16 | 15 | 14 | 11 | 9 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 23 | 8 |
| Feb | 25 | 10 |
| Mar | 28 | 12 |
| Apr | 30 | 14 |
| May | 31 | 17 |
| Jun | 30 | 17 |
| Jul | 27 | 16 |
| Aug | 27 | 16 |
| Sep | 26 | 15 |
| Oct | 27 | 14 |
| Nov | 25 | 11 |
| Dec | 24 | 9 |
Average hourly temperature in San Juan de los Lagos
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 31°C, and coldest before dawn in January, near 8°C.
San Juan de los Lagos 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 | 23° / 8° | 16 | 2 | 10.9 | 8.5 |
| Feb | 25° / 10° | 10 | 1.6 | 11.3 | 8.6 |
| Mar | 28° / 12° | 7 | 1.1 | 11.8 | 7.9 |
| Apr | 30° / 14° | 5 | 0.9 | 12.5 | 6.2 |
| May | 31° / 17° | 24 | 5.1 | 13 | 5.1 |
| Jun | 30° / 17° | 115 | 13.8 | 13.3 | 4.8 |
| Jul | 27° / 16° | 153 | 19.8 | 13.2 | 5.2 |
| Aug | 27° / 16° | 137 | 18.2 | 12.7 | 5.4 |
| Sep | 26° / 15° | 111 | 15.2 | 12.1 | 5.7 |
| Oct | 27° / 14° | 40 | 6.7 | 11.5 | 7.3 |
| Nov | 25° / 11° | 10 | 2.2 | 11 | 8.5 |
| Dec | 24° / 9° | 7 | 1.1 | 10.7 | 8.7 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
San Juan de los Lagos gets about 633 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 4.5 months, from around May 30 to Oct 14, peaking in July at about 67% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Feb 25.
July is the wettest month by volume, with 153 mm over about 20 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 (%) | 7 | 5 | 3 | 4 | 16 | 47 | 63 | 59 | 50 | 22 | 7 | 4 |
| Rain days | 2 | 2 | 1 | 1 | 5 | 14 | 20 | 18 | 15 | 7 | 2 | 1 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 7 | 2 |
| Feb | 5 | 2 |
| Mar | 3 | 1 |
| Apr | 4 | 1 |
| May | 16 | 5 |
| Jun | 47 | 14 |
| Jul | 63 | 20 |
| Aug | 59 | 18 |
| Sep | 50 | 15 |
| Oct | 22 | 7 |
| Nov | 7 | 2 |
| Dec | 4 | 1 |
Monthly rainfall
Over a full year, San Juan de los Lagos collects about 633 mm of rain across 88 wet days — roughly 53 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 153 mm, while April is the driest at just 5 mm. The three wettest months alone bring about 64% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 16 | 10 | 7 | 5 | 24 | 115 | 153 | 137 | 111 | 40 | 10 | 7 |
| Rain days | 2 | 2 | 1 | 1 | 5 | 14 | 20 | 18 | 15 | 7 | 2 | 1 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 16 | 2 |
| Feb | 10 | 2 |
| Mar | 7 | 1 |
| Apr | 5 | 1 |
| May | 24 | 5 |
| Jun | 115 | 14 |
| Jul | 153 | 20 |
| Aug | 137 | 18 |
| Sep | 111 | 15 |
| Oct | 40 | 7 |
| Nov | 10 | 2 |
| Dec | 7 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In San Juan de los Lagos, 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 January 4 and lasts for 5.2 months, ending around June 11. The clearest month is May, when the sky is clear, mostly clear, or partly cloudy 78% of the time on average.
The cloudier part of the year begins around June 12 and lasts for 4.3 months, ending around October 19. The cloudiest month is September, when it is overcast or mostly cloudy 54% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 68 | 75 | 77 | 72 | 78 | 61 | 53 | 54 | 46 | 63 | 77 | 68 |
| Cloudier (%) | 32 | 25 | 23 | 28 | 22 | 39 | 47 | 46 | 54 | 37 | 23 | 32 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 68 | 32 |
| Feb | 75 | 25 |
| Mar | 77 | 23 |
| Apr | 72 | 28 |
| May | 78 | 22 |
| Jun | 61 | 39 |
| Jul | 53 | 47 |
| Aug | 54 | 46 |
| Sep | 46 | 54 |
| Oct | 63 | 37 |
| Nov | 77 | 23 |
| Dec | 68 | 32 |
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 9, brings about 13 h 18 min of light; the shortest, around January 1, only 10 h 42 min — a swing of roughly 2 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.9 | 11.3 | 11.8 | 12.5 | 13.0 | 13.3 | 13.2 | 12.7 | 12.1 | 11.5 | 11.0 | 10.7 |
| Sunrise (AM) | 7:33 | 7:26 | 7:04 | 6:35 | 6:15 | 6:11 | 6:20 | 6:31 | 6:40 | 6:49 | 7:06 | 7:24 |
| Sunset (PM) | 6:24 | 6:42 | 6:54 | 7:04 | 7:16 | 7:28 | 7:30 | 7:15 | 6:47 | 6:19 | 6:04 | 6:07 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.9 | 7:33 | 6:24 |
| Feb | 11.3 | 7:26 | 6:42 |
| Mar | 11.8 | 7:04 | 6:54 |
| Apr | 12.5 | 6:35 | 7:04 |
| May | 13.0 | 6:15 | 7:16 |
| Jun | 13.3 | 6:11 | 7:28 |
| Jul | 13.2 | 6:20 | 7:30 |
| Aug | 12.7 | 6:31 | 7:15 |
| Sep | 12.1 | 6:40 | 6:47 |
| Oct | 11.5 | 6:49 | 6:19 |
| Nov | 11.0 | 7:06 | 6:04 |
| Dec | 10.7 | 7:24 | 6:07 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
San Juan de los Lagos averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 6 and 20 days.
The sunnier stretch runs 7.6 months, from around Oct 21 to Jun 8. The sunniest month is February, with roughly 19 sunny days (bright).
The greyest month is September, down near 7 sunny days — about 65% fewer than the February peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 17 | 18 | 20 | 17 | 19 | 12 | 9 | 9 | 7 | 14 | 19 | 17 |
| Sky | Bright | Bright | Bright | Bright | Bright | Mixed | Mixed | Mixed | Gloomy | Mixed | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 17 | Bright |
| Feb | 18 | Bright |
| Mar | 20 | Bright |
| Apr | 17 | Bright |
| May | 19 | Bright |
| Jun | 12 | Mixed |
| Jul | 9 | Mixed |
| Aug | 9 | Mixed |
| Sep | 7 | Gloomy |
| Oct | 14 | Mixed |
| Nov | 19 | 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 San Juan de los Lagos, how humid it feels changes noticeably over the year.
The more humid part of the year lasts 4.1 months, from around June 3 to October 6. The muggiest month is June, when the air feels humid, muggy or worse about 19% of the time.
The most comfortable stretch runs from around October 7 to June 2, and April 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 | 100 | 93 | 47 | 22 | 22 | 28 | 69 | 96 | 100 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 6 | 34 | 57 | 57 | 51 | 26 | 4 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 1 | 19 | 20 | 21 | 21 | 4 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| Jan | 100 | 0 | 0 |
| Feb | 100 | 0 | 0 |
| Mar | 100 | 0 | 0 |
| Apr | 100 | 0 | 0 |
| May | 93 | 6 | 1 |
| Jun | 47 | 34 | 19 |
| Jul | 22 | 57 | 20 |
| Aug | 22 | 57 | 21 |
| Sep | 28 | 51 | 21 |
| Oct | 69 | 26 | 4 |
| Nov | 96 | 4 | 0 |
| Dec | 100 | 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.
Across the year, average wind speed in San Juan de los Lagos is typically calm, near 9 km/h, and varies little with the seasons.
The windier part of the year lasts 4.6 months, from around Jan 17 to Jun 6. The windiest month is April, averaging about 12 km/h (calm).
The calmer part of the year runs from around Jun 7 to Jan 16, with July the calmest month at about 7 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 9 | 10 | 11 | 12 | 11 | 9 | 7 | 7 | 8 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 9 | calm |
| Feb | 10 | calm |
| Mar | 11 | calm |
| Apr | 12 | calm |
| May | 11 | calm |
| Jun | 9 | calm |
| Jul | 7 | calm |
| Aug | 7 | calm |
| Sep | 8 | calm |
| Oct | 9 | calm |
| Nov | 9 | calm |
| Dec | 9 | calm |
Hazard calendar for San Juan de los Lagos
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
San Juan de los Lagos's rainy season runs June–September, when most of the year's rain falls.
Best time to visit San Juan de los Lagos
To characterize how pleasant the weather is in San Juan de los Lagos throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late March, San Juan de los Lagos 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 San Juan de los Lagos for general outdoor tourist activities is from mid October to late March, with a peak score in the first week of December.
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 | 8.6 | 7.9 | 6.2 | 5.1 | 4.8 | 5.2 | 5.4 | 5.8 | 7.2 | 8.5 | 8.7 |
| Rating | ideal | ideal | ideal | good | fair | fair | fair | fair | good | good | ideal | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 8.5 | ideal |
| Feb | 8.6 | ideal |
| Mar | 7.9 | ideal |
| Apr | 6.2 | good |
| May | 5.1 | fair |
| Jun | 4.8 | fair |
| Jul | 5.2 | fair |
| Aug | 5.4 | fair |
| Sep | 5.8 | good |
| Oct | 7.2 | good |
| Nov | 8.5 | ideal |
| Dec | 8.7 | ideal |
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 San Juan de los Lagos for hot-weather activities run from early February to early June and again from mid October to mid December, with a peak score in the last 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 San Juan de los Lagos, 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 31°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 23°C), pack light clothes, a warm layer and sun protection.
In May, San Juan de los Lagos sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 5 days see rain.
UV index (midday) in San Juan de los Lagos 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 Juan de los Lagos peaks around May 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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) | 8 | 10 | 13 | 14 | 14 | 14 | 13 | 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 | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 14 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Average hourly UV index in San Juan de los Lagos
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 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) | 6.5 | 7 | 8 | 8.5 | 9 | 9 | 8.5 | 8.5 | 8 | 7 | 6 | 6 |
| UV ≥ 6 (h/day) | 3.5 | 5 | 6 | 6.5 | 7 | 7 | 6.5 | 6.5 | 6 | 5 | 3.5 | 3 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 6.5 | 3.5 |
| Feb | 7 | 5 |
| Mar | 8 | 6 |
| Apr | 8.5 | 6.5 |
| May | 9 | 7 |
| Jun | 9 | 7 |
| Jul | 8.5 | 6.5 |
| Aug | 8.5 | 6.5 |
| Sep | 8 | 6 |
| Oct | 7 | 5 |
| Nov | 6 | 3.5 |
| Dec | 6 | 3 |
Air quality in San Juan de los Lagos 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 Juan de los Lagos is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 18 | 17 | 16 | 17 | 21 | 15 | 16 | 15 | 17 | 14 | 16 | 20 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 17 | Moderate |
| Mar | 16 | Moderate |
| Apr | 17 | Moderate |
| May | 21 | Moderate |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 17 | Moderate |
| Oct | 14 | Moderate |
| Nov | 16 | Moderate |
| Dec | 20 | Moderate |
Growing season
San Juan de los Lagos 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. San Juan de los Lagos banks about 3,651 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) | 168 | 208 | 302 | 364 | 432 | 403 | 358 | 352 | 324 | 314 | 240 | 185 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 168 |
| Feb | 208 |
| Mar | 302 |
| Apr | 364 |
| May | 432 |
| Jun | 403 |
| Jul | 358 |
| Aug | 352 |
| Sep | 324 |
| Oct | 314 |
| Nov | 240 |
| Dec | 185 |
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 Juan de los Lagos receives about 6.2 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.8 and 7.8 kWh/m².
The brighter stretch of the year lasts 6.0 months, from around Feb 20 to Aug 22. The brightest month is April, averaging about 7.7 kWh/m² (intense).
The dimmest month is December, down near 4.8 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 | 6.0 | 7.0 | 7.7 | 7.7 | 6.8 | 6.5 | 6.4 | 5.7 | 5.5 | 5.2 | 4.8 |
| Level | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.0 | Bright |
| Feb | 6.0 | Bright |
| Mar | 7.0 | Intense |
| Apr | 7.7 | Intense |
| May | 7.7 | Intense |
| Jun | 6.8 | Intense |
| Jul | 6.5 | Intense |
| Aug | 6.4 | Intense |
| Sep | 5.7 | Bright |
| Oct | 5.5 | Bright |
| Nov | 5.2 | Bright |
| Dec | 4.8 | Bright |
Where is San Juan de los Lagos?
San Juan de los Lagos sits at 21.2°N, 102.3°W, 1,749 m above sea level, in Mexico. The nearest listed city is Jalostotitlán, 16 km away.
Topography around San Juan de los Lagos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Juan de los Lagos.
Within 3 km, the terrain around San Juan de los Lagos has only modest variations in elevation — a maximum elevation change of 175 m around an average of 1,767 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 356 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,615 m.
The land around San Juan de los Lagos is covered by artificial surfaces (31%), shrubs (24%) and cropland (20%) within 3 km, shrubs (40%) and cropland (40%) within 16 km, and shrubs (42%) and cropland (27%) 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 San Juan de los Lagos (21.2489°, -102.3304°, elevation 1,749 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).