Climate and average weather in Vilassar de Mar

In Vilassar de Mar, the summers are humid, warm, fairly dry, and mostly clear and the winters are cool and mostly clear.

Best: late May to mid September

Over the course of the year, the temperature in Vilassar de Mar typically varies from 8°C to 25°C, and is rarely below 5°C or above 27°C. August is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Vilassar de Mar for warm-weather activities is from late May to mid September.

Hottest
Aug
25°
Coldest
Jan
Wettest
Oct
107 mm
Driest
Jul
31 mm
Rain / yr
682 mm
94 wet days
Daylight
9.0–15.0 h
shortest–longest
Elevation
19 m
41.5°N
Clearest
Jul
32% cloud

Vilassar de Mar 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 May to mid September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 3.2 months, from June 18 to September 22, with daily high temperatures above 22°C. The hottest month of the year in Vilassar de Mar is August, with an average high of 25°C and low of 22°C.

The cool season lasts 4.5 months, from November 22 to April 8, with daily high temperatures below 14°C. The coldest month of the year in Vilassar de Mar is January, with an average low of 8°C and high of 12°C.

Days typically run about 3°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan128
Feb128
Mar1310
Apr1512
May1815
Jun2219
Jul2421
Aug2522
Sep2319
Oct1916
Nov1512
Dec139

Average hourly temperature in Vilassar de Mar

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 August afternoons, near 25°C, and coldest before dawn in January, near C.

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

Vilassar de Mar weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 5279.33.5
Feb12° / 477.210.33.5
Mar13° / 10°477.311.74.2
Apr15° / 12°558.513.14.8
May18° / 15°487.814.36.2
Jun22° / 19°395.814.97.5
Jul24° / 21°315.214.78.2
Aug25° / 22°436.913.77.7
Sep23° / 19°861112.36.8
Oct19° / 16°10710.910.96.2
Nov15° / 12°7499.75.0
Dec13° / 5379.13.9

Chance of rain

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

Vilassar de Mar gets about 682 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 3.3 months, from around Aug 26 to Dec 2, peaking in October at about 38% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 22.

October is the wettest month by volume, with 107 mm over about 11 wet days; July is the driest, with 31 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetOct 11 · 38%Jul 22 · 15%
Rain on a day (%)Rain days
Jan227
Feb267
Mar247
Apr289
May268
Jun206
Jul175
Aug237
Sep3611
Oct3511
Nov309
Dec237

Monthly rainfall

Over a full year, Vilassar de Mar collects about 682 mm of rain across 94 wet days — roughly 57 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 107 mm, while July is the driest at just 31 mm. The three wettest months alone bring about 39% of the year’s total.

0255075100125JanFebMarAprMayJunJulAugSepOctNovDec5247475548393143861077453
Rainfall (mm)Rain days
Jan527
Feb477
Mar477
Apr559
May488
Jun396
Jul315
Aug437
Sep8611
Oct10711
Nov749
Dec537

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Vilassar de Mar, 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 27 and lasts for 3.4 months, ending around September 6. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 83% of the time on average.

The cloudier part of the year begins around September 7 and lasts for 8.6 months, ending around May 26. The cloudiest month is October, when it is overcast or mostly cloudy 45% 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 · 86%Oct 19 · 52%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan6238
Feb5941
Mar6040
Apr6040
May6139
Jun7327
Jul8317
Aug7723
Sep6238
Oct5545
Nov5842
Dec5644

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 12, brings about 15 hours of light; the shortest, around January 1, only 9 hours — a swing of roughly 6 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.38:205:39
Feb10.37:556:15
Mar11.77:106:50
Apr13.16:177:24
May14.35:377:56
Jun14.95:218:20
Jul14.75:348:18
Aug13.76:047:45
Sep12.36:376:53
Oct10.97:106:01
Nov9.77:475:24
Dec9.18:165:17

Sunny days

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

Vilassar de Mar averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 21 days.

The sunnier stretch runs 2.8 months, from around Jun 9 to Aug 31. The sunniest month is July, with roughly 20 sunny days (bright).

The greyest month is October, down near 11 sunny days — about 46% fewer than the July peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2521 daysOct 1510 days
Sunny daysSky
Jan14Mixed
Feb12Mixed
Mar14Mixed
Apr12Mixed
May12Mixed
Jun16Bright
Jul20Bright
Aug18Bright
Sep13Mixed
Oct11Mixed
Nov12Mixed
Dec13Mixed

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 Vilassar de Mar, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.7 months, from around May 28 to October 16. The muggiest month is July, when the air feels humid, muggy or worse about 91% of the time.

The most comfortable stretch runs from around October 17 to May 27, and April is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecApr 22 · 100%Jul 30 · 4%oppressivecomfortablehumidmuggydrycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan1000000
Feb1000000
Mar1000000
Apr919000
May41461300
Jun72543242
Jul08225217
Aug07214527
Sep102434284
Oct35332650
Nov8117200
Dec991000

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 Vilassar de Mar is steady company: average speeds sit near 12 km/hlight breeze — in every month of the year, with no meaningful windy or calm season.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeMar 1 · 13 km/hJul 29 · 11 km/h
Wind speed (km/h)Feels
Jan13light breeze
Feb13light breeze
Mar13light breeze
Apr13light breeze
May12calm
Jun11calm
Jul11calm
Aug11calm
Sep11calm
Oct12light breeze
Nov13light breeze
Dec13light breeze

Best time to visit Vilassar de Mar

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid September, Vilassar de Mar 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 Vilassar de Mar for general outdoor tourist activities is from late May to late September, with a peak score in the third week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 20 · 8.3

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
Jan3.5poor
Feb3.5poor
Mar4.2fair
Apr4.9fair
May6.2good
Jun7.5ideal
Jul8.2ideal
Aug7.7ideal
Sep6.8good
Oct6.2good
Nov5.0fair
Dec3.9fair

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 Vilassar de Mar for hot-weather activities is from late June to early September, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 26 · 7.4

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 Vilassar de Mar, 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 August (highs near 25°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 12°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Vilassar de Mar sees daytime highs around 25°C and nights near 22°C. Worth packing: light clothes and sun protection. About 7 days see rain.

Sea temperature near Vilassar de Mar

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 15 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 11 to Oct 23 — about 4.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep24Refreshing
Oct21Refreshing
Nov17Cool
Dec15Bracing

UV index (midday) in Vilassar de Mar 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 Vilassar de Mar peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 14UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Average hourly UV index in Vilassar de Mar

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 5.5 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
Feb10
Mar4.50
Apr6.52.5
May71.5
Jun85
Jul8.55.5
Aug7.54
Sep60
Oct20
Nov00
Dec00
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Vilassar de Mar is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

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. Vilassar de Mar banks about 2,186 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan4
Feb4
Mar48
Apr98
May196
Jun301
Jul399
Aug419
Sep330
Oct242
Nov112
Dec33

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.

Vilassar de Mar receives about 4.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.8 and 6.9 kWh/m².

The brighter stretch of the year lasts 6.0 months, from around Mar 16 to Sep 15. The brightest month is June, averaging about 6.7 kWh/m² (intense).

The dimmest month is December, down near 1.8 kWh/m² — roughly 73% less than the June peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJun 266.9 kWhDec 171.8 kWh
Solar energy (kWh/m²)Level
Jan2.1Moderate
Feb3.0Moderate
Mar4.3Bright
Apr5.4Bright
May6.2Intense
Jun6.8Intense
Jul6.6Intense
Aug5.8Bright
Sep4.3Bright
Oct3.1Moderate
Nov2.2Moderate
Dec1.8Dim

Where is Vilassar de Mar?

Vilassar de Mar sits at 41.5°N, 2.4°E, 19 m above sea level, in Spain. The nearest listed city is Premià de Mar, 3.0 km away.

Topography around Vilassar de Mar

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vilassar de Mar.

Within 3 km, the terrain around Vilassar de Mar has significant variations in elevation — a maximum elevation change of 312 m around an average of 39 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 654 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,677 m.

The land around Vilassar de Mar is covered by water (44%) and artificial surfaces (28%) within 3 km, water (51%) and trees (26%) within 16 km, and trees (46%) and water (33%) within 80 km.

3 km
312 m
16 km
654 m
80 km
1,677 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Premià de Mar 3.0 km · Mataró 6.0 km · El Masnou 7.0 km · Montornès del Vallès 11 km · Badalona 14 km · Granollers 14 km · Cardedeu 15 km · Parets del Vallès 15 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 Vilassar de Mar (41.5051°, 2.3923°, elevation 19 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).