Climate and average weather in Rocha

In Rocha, the summers are warm, showery, and mostly clear and the winters are cool and partly cloudy.

Best: early January to mid May

Over the course of the year, the temperature in Rocha typically varies from 8°C to 26°C, and is rarely below 4°C or above 30°C. January is the hottest month of the year, while July is the coldest.

Based on the travel score, the best times of year to visit Rocha for warm-weather activities are from early January to mid May and early October to late December.

Hottest
Jan
26°
Coldest
Jul
Wettest
Apr
110 mm
Driest
Jan
82 mm
Rain / yr
1154 mm
106 wet days
Daylight
9.7–14.3 h
shortest–longest
Elevation
8 m
34.5°S
Clearest
Jan
50% cloud

Rocha is city in Uruguay.

Density
1,402/km²
people per km²
Founded
1793

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

Rocha 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 early January to mid May.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 3.9 months, from December 1 to March 30, with daily high temperatures above 23°C. The hottest month of the year in Rocha is January, with an average high of 26°C and low of 18°C.

The cool season lasts 3.6 months, from May 30 to September 14, with daily high temperatures below 16°C. The coldest month of the year in Rocha is July, with an average low of 8°C and high of 14°C.

Days typically run about 7°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2618
Feb2519
Mar2417
Apr2115
May1812
Jun159
Jul148
Aug169
Sep1710
Oct1912
Nov2114
Dec2417

Average hourly temperature in Rocha

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 26°C, and coldest before dawn in July, near C.

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

Rocha 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
Jan26° / 18°828.9147.1
Feb25° / 19°989.613.36.8
Mar24° / 17°989.812.37.0
Apr21° / 15°1108.811.26.6
May18° / 12°858.110.26.0
Jun15° / 998.39.74.8
Jul14° / 978.69.94.3
Aug16° / 1038.510.74.9
Sep17° / 10°958.811.85.4
Oct19° / 12°1079.812.96.1
Nov21° / 14°968.613.86.8
Dec24° / 17°858.514.37.3

Chance of rain

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

Rocha gets about 1154 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 3.0 months, from around Jan 21 to Apr 20, peaking in February at about 34% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 16.

April is the wettest month by volume, with 110 mm over about 9 wet days; January is the driest, with 82 mm.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetFeb 5 · 34%May 16 · 24%
Rain on a day (%)Rain days
Jan299
Feb3310
Mar3210
Apr309
May258
Jun288
Jul289
Aug289
Sep299
Oct3110
Nov299
Dec289

Monthly rainfall

Over a full year, Rocha collects about 1154 mm of rain across 106 wet days — roughly 96 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 110 mm, while January is the driest at just 82 mm. The three wettest months alone bring about 28% of the year’s total.

0255075100125150JanFebMarAprMayJunJulAugSepOctNovDec829898110859997103951079685
Rainfall (mm)Rain days
Jan829
Feb9810
Mar9810
Apr1109
May858
Jun998
Jul979
Aug1039
Sep959
Oct10710
Nov969
Dec859

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Rocha, 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 November 4 and lasts for 5.1 months, ending around April 6. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 58% of the time on average.

The cloudier part of the year begins around May 4 and lasts for 6.0 months, ending around November 3. The cloudiest month is September, when it is overcast or mostly cloudy 56% 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%JanFebMarAprMayJunJulAugSepOctNovDecJan 18 · 59%May 25 · 40%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan5842
Feb5446
Mar5446
Apr4951
May4456
Jun4456
Jul4456
Aug4456
Sep4456
Oct4654
Nov5446
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 January 1, brings about 14 h 18 min of light; the shortest, around June 11, only 9 h 42 min — a swing of roughly 4 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.06:448:49
Feb13.37:138:30
Mar12.37:397:55
Apr11.28:037:12
May10.28:276:40
Jun9.78:466:29
Jul9.98:466:40
Aug10.78:207:02
Sep11.87:387:25
Oct12.96:567:49
Nov13.86:288:18
Dec14.36:258:42

Sunny days

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

Rocha averages about 10 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 7 and 13 days.

The sunnier stretch runs 5.2 months, from around Oct 26 to Mar 31. The sunniest month is January, with roughly 12 sunny days (mixed).

The greyest month is May, down near 8 sunny days — about 32% fewer than the January peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedJan 213 daysMay 277 days
Sunny daysSky
Jan12Mixed
Feb9Mixed
Mar11Mixed
Apr9Mixed
May8Mixed
Jun8Gloomy
Jul9Mixed
Aug9Mixed
Sep9Mixed
Oct10Mixed
Nov11Mixed
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 Rocha, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.1 months, from around November 16 to April 20. The muggiest month is February, when the air feels humid, muggy or worse about 72% of the time.

The most comfortable stretch runs from around April 21 to November 15, and July is the most comfortable month — the air is dry or comfortable 99% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 18 · 100%Feb 12 · 27%oppressivemuggycomfortablehumiddryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan122027338
Feb1117263511
Mar182028285
Apr402524110
May66201310
Jun8313400
Jul8712100
Aug8513200
Sep8016400
Oct58301110
Nov41302540
Dec232431202

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 Rocha is steady company: average speeds sit near 17 km/hlight breeze — in every month of the year, with no meaningful windy or calm season.

0510152025JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezebreezySep 7 · 18 km/hMay 7 · 16 km/h
Wind speed (km/h)Feels
Jan16light breeze
Feb16light breeze
Mar16light breeze
Apr16light breeze
May16light breeze
Jun17light breeze
Jul17light breeze
Aug17light breeze
Sep18light breeze
Oct17light breeze
Nov17light breeze
Dec17light breeze

Best time to visit Rocha

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Rocha 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 Rocha for general outdoor tourist activities is from early October to late May, with a peak score in the second week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationDec 9 · 7.4

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
Jan7.1good
Feb6.8good
Mar7.0good
Apr6.6good
May6.0good
Jun4.8fair
Jul4.3fair
Aug4.9fair
Sep5.4fair
Oct6.1good
Nov6.8good
Dec7.3good

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 Rocha for hot-weather activities is from late November to late March, with a peak score in the second week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 13 · 6.6

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 Rocha, 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 January (highs near 26°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 14°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Rocha sees daytime highs around 26°C and nights near 18°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.

Sea temperature near Rocha

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 25 km away) is warmest in February at about 23°C and coldest in July near 12°C.

It's comfortable for a long swim from Dec 14 to Apr 16 — about 4.1 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb23Refreshing
Mar22Refreshing
Apr20Refreshing
May17Cool
Jun14Bracing
Jul12Bracing
Aug12Bracing
Sep13Bracing
Oct15Cool
Nov18Cool
Dec20Refreshing

UV index (midday) in Rocha 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 Rocha peaks around January 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 16UV 12Jun 18UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Average hourly UV index in Rocha

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 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.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan97
Feb8.56
Mar7.55
Apr5.50
May2.50
Jun00
Jul10
Aug40
Sep60
Oct74.5
Nov8.56
Dec96.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Rocha 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
Jul990
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. Rocha banks about 2,398 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan369
Feb333
Mar330
Apr237
May149
Jun65
Jul33
Aug67
Sep94
Oct168
Nov233
Dec319

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.

Rocha receives about 4.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.2 and 7.4 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Sep 24 to Mar 21. The brightest month is December, averaging about 7.4 kWh/m² (intense).

The dimmest month is June, down near 2.2 kWh/m² — roughly 70% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 97.4 kWhJun 232.2 kWh
Solar energy (kWh/m²)Level
Jan7.2Intense
Feb6.2Intense
Mar5.0Bright
Apr3.6Moderate
May2.7Moderate
Jun2.2Moderate
Jul2.4Moderate
Aug3.2Moderate
Sep4.4Bright
Oct5.4Bright
Nov6.8Intense
Dec7.4Intense

Where is Rocha?

Rocha sits at 34.5°S, 54.3°W, 8 m above sea level, in Uruguay. The nearest listed city is La Paloma, 25 km away.

San CarlosMaldonadoPunta del EsteMinasPiriapolisSanta Vitória do PalmarTreinta y Tres

Topography around Rocha

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

Within 3 km, the terrain around Rocha has only modest variations in elevation — a maximum elevation change of 54 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 324 m; within 80 km, significant variations in elevation — a maximum elevation change of 498 m.

The land around Rocha is covered by grassland (54%), trees (21%) and artificial surfaces (20%) within 3 km, grassland (64%) and trees (21%) within 16 km, and grassland (47%) and water (31%) within 80 km.

3 km
54 m
16 km
324 m
80 km
498 m
treesgrasslandcroplandartificial surfaceswaterwetland
Nearby: La Paloma 25 km · San Carlos 64 km · Maldonado 73 km · Punta del Este 76 km · Minas 84 km · Piriapolis 96 km · Santa Vitória do Palmar 139 km · Treinta y Tres 139 km

Uruguay travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / I / L
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$25,216
2025
Happiness
6.6 / 10
World Happiness, 2025
Homicide rate
11.2
per 100k, 2023
Road deaths
14.8
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 542
Religion
none 47%Roman Catholic 37%Protestant 15%atheist 10%

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 Rocha (-34.48°, -54.3306°, elevation 8 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).