Climate and average weather in San Martín de la Vega

In San Martín de la Vega, the summers are sweltering, dry, and clear and the winters are cool and partly cloudy.

Best: mid April to mid June

Over the course of the year, the temperature in San Martín de la Vega typically varies from 2°C to 34°C, and is rarely below -3°C or above 38°C. July is the hottest month of the year, while January is the coldest.

Based on the travel score, the best times of year to visit San Martín de la Vega for warm-weather activities are from mid April to mid June and early September to late October.

Hottest
Jul
34°
Coldest
Jan
Wettest
Oct
62 mm
Driest
Jul
8 mm
Rain / yr
448 mm
73 wet days
Daylight
9.1–14.9 h
shortest–longest
Elevation
518 m
40.2°N
Clearest
Jul
19% cloud

San Martín de la Vega is capital of San Martín de la Vega Municipality, Spain.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

San Martín de la Vega 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 mid June.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in San Martín de la Vega, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.1 months, from June 11 to September 11, with daily high temperatures above 28°C. The hottest month of the year in San Martín de la Vega is July, with an average high of 34°C and low of 19°C.

The cool season lasts 3.7 months, from November 12 to March 4, with daily high temperatures below 15°C. The coldest month of the year in San Martín de la Vega is January, with an average low of 2°C and high of 10°C.

Days typically run about 11°C warmer than nights, with the widest day–night swing (around 14°C) in July.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan102
Feb133
Mar165
Apr198
May2412
Jun2916
Jul3419
Aug3319
Sep2715
Oct2111
Nov146
Dec113

How hot and cold San Martín de la Vega really feels

Feels-like highFeels-like lowactual air temp

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 Martín de la Vega feels like about 34°C (around July 26). About 57 days a year carry some heat stress, peaking in July.

On the coldest nights, wind chill pulls the feels-like down to about -1°C (around January 17), with roughly 59 freezing days a year (feels-like at or below 0°C), worst in January.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan1010-12
Feb131303
Mar161635
Apr191968
May23241112
Jun29291616
Jul34341919
Aug33331919
Sep27271515
Oct21211011
Nov141446
Dec111103

Average hourly temperature in San Martín de la Vega

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 July afternoons, near 34°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

San Martín de la Vega weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 407.20.69.52.6
Feb13° / 356.40.510.43.8
Mar16° / 427.50.311.75.6
Apr19° / 528.20136.4
May24° / 12°488.2014.27.2
Jun29° / 16°224.1014.86.3
Jul34° / 19°81.5014.64.2
Aug33° / 19°122.9013.64.5
Sep27° / 15°264.2012.37.2
Oct21° / 11°627.9010.96.9
Nov14° / 557.809.84.5
Dec11° / 487.40.49.22.8

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

San Martín de la Vega gets about 448 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 7.8 months, from around Oct 6 to May 29, peaking in October at about 30% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 15.

October is the wettest month by volume, with 62 mm over about 8 wet days; July is the driest, with 8 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetOct 23 · 30%Jul 15 · 5%
Rain on a day (%)Rain days
Jan247
Feb236
Mar248
Apr288
May268
Jun144
Jul62
Aug93
Sep144
Oct268
Nov268
Dec247

Monthly rainfall

Over a full year, San Martín de la Vega collects about 448 mm of rain across 73 wet days — roughly 37 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 62 mm, while July is the driest at just 8 mm. The three wettest months alone bring about 38% of the year’s total, and some of the cold-season precipitation falls as snow.

0255075JanFebMarAprMayJunJulAugSepOctNovDec40354252482281226625548
Rainfall (mm)Rain daysSnow days
Jan4071
Feb3561
Mar4280
Apr5280
May4880
Jun2240
Jul820
Aug1230
Sep2640
Oct6280
Nov5580
Dec4870

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In San Martín de la Vega, 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 May 21 and lasts for 4.6 months, ending around October 6. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 92% of the time on average.

The cloudier part of the year begins around October 7 and lasts for 7.4 months, ending around May 20. The cloudiest month is December, when it is overcast or mostly cloudy 52% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJul 25 · 94%Dec 11 · 46%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan5050
Feb5347
Mar5446
Apr5050
May5941
Jun7624
Jul928
Aug8911
Sep7426
Oct5545
Nov5050
Dec4852

Daylight, sunrise and sunset

DaylightNight

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 17, brings about 14 h 54 min of light; the shortest, around December 17, only 9 h 06 min — a swing of roughly 5 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.58:416:07
Feb10.48:166:41
Mar11.77:347:14
Apr13.06:437:46
May14.26:048:17
Jun14.85:498:40
Jul14.66:028:38
Aug13.66:308:07
Sep12.37:017:16
Oct10.97:326:27
Nov9.88:085:52
Dec9.28:365:45

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

San Martín de la Vega averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 9 and 26 days.

The sunnier stretch runs 4.2 months, from around May 31 to Oct 5. The sunniest month is July, with roughly 25 sunny days (brilliant).

The greyest month is May, down near 11 sunny days — about 55% fewer than the July peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2426 daysMay 29 days
Sunny daysSky
Jan11Mixed
Feb11Mixed
Mar12Mixed
Apr10Mixed
May11Mixed
Jun18Bright
Jul25Brilliant
Aug24Brilliant
Sep17Bright
Oct12Mixed
Nov11Mixed
Dec10Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Martín de la Vega, the air stays dry or comfortable essentially all year. Even in September, the muggiest month, it feels humid or worse only about 1% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)Humid (%)
Jan10000
Feb10000
Mar10000
Apr10000
May9730
Jun9280
Jul9451
Aug88111
Sep85141
Oct89110
Nov9910
Dec10000

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 San Martín de la Vega is steady company: average speeds sit near 9 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeApr 4 · 11 km/hDec 11 · 9 km/h
Wind speed (km/h)Feels
Jan9calm
Feb10calm
Mar10calm
Apr10calm
May10calm
Jun10calm
Jul10calm
Aug9calm
Sep9calm
Oct9calm
Nov9calm
Dec9calm

Best time to visit San Martín de la Vega

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in San Martín de la Vega throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late April, San Martín de la Vega 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 times of year to visit San Martín de la Vega for general outdoor tourist activities run from mid April to mid June and again from early September to late October, with a peak score in the last week of September.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationSep 29 · 7.9

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).

Travel score (0–10)Rating
Jan2.6poor
Feb3.8fair
Mar5.6good
Apr6.4good
May7.2good
Jun6.3good
Jul4.2fair
Aug4.6fair
Sep7.2good
Oct6.8good
Nov4.5fair
Dec2.8poor

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 Martín de la Vega for hot-weather activities is from late May to late September, with a peak score in the first week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationSep 6 · 8.4

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 Martín de la Vega, by month

EssentialRecommendedOptional

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 July (highs near 34°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 10°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, San Martín de la Vega sees daytime highs around 34°C and nights near 19°C. Pack light clothes and sun protection.

UV index (midday) in San Martín de la Vega by month

LowModerateHighVery highExtreme

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 Martín de la Vega peaks around July 15 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 15UV 10Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb2Moderate
Mar6High
Apr7High
May7High
Jun9Very high
Jul10Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Average hourly UV index in San Martín de la Vega

LowModerateHighVery highExtreme

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 July the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar5.50
Apr72.5
May73
Jun8.55.5
Jul8.56
Aug85
Sep62
Oct40
Nov00
Dec00
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

San Martín de la Vega is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 4 to November 21 (263 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freeMar 490%Nov 2190%
Frost-free chance (%)Frost nights
Jan7031
Feb8028
Mar964
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov9410
Dec7731

Growing degree days

Degree days (base 10°C)Frost-free shaded

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 Martín de la Vega banks about 2,273 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar29
Apr99
May233
Jun385
Jul509
Aug492
Sep335
Oct172
Nov19
Dec0

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 Martín de la Vega receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.8 and 7.9 kWh/m².

The brighter stretch of the year lasts 6.1 months, from around Mar 22 to Sep 23. The brightest month is July, averaging about 7.8 kWh/m² (intense).

The dimmest month is December, down near 1.9 kWh/m² — roughly 76% less than the July peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJul 87.9 kWhDec 191.8 kWh
Solar energy (kWh/m²)Level
Jan2.1Moderate
Feb3.2Moderate
Mar4.6Bright
Apr5.8Bright
May6.8Intense
Jun7.6Intense
Jul7.8Intense
Aug6.9Intense
Sep5.3Bright
Oct3.5Moderate
Nov2.3Moderate
Dec1.9Dim

Where is San Martín de la Vega?

San Martín de la Vega sits at 40.2°N, 3.6°W, 518 m above sea level, in Spain. The nearest listed city is Ciempozuelos, 7.0 km away.

Topography around San Martín de la Vega

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Martín de la Vega.

Within 3 km, the terrain around San Martín de la Vega has only modest variations in elevation — a maximum elevation change of 157 m around an average of 539 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 312 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,007 m.

The land around San Martín de la Vega is covered by cropland (39%) and grassland (37%) within 3 km, cropland (39%) and grassland (38%) within 16 km, and cropland (49%) and grassland (29%) within 80 km.

3 km
157 m
16 km
312 m
80 km
2,007 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Ciempozuelos 7.0 km · Valdemoro 9.0 km · Pinto 12 km · Rivas-Vaciamadrid 14 km · Arganda 15 km · Seseña 16 km · Casco Histórico de Vallecas 16 km · Butarque 17 km

Spain travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$38,627
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 540
Religion
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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 Martín de la Vega (40.2073°, -3.5706°, elevation 518 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).