Climate and average weather in General Roca

In General Roca, the summers are hot, fairly dry, and clear and the winters are cool and partly cloudy.

Best: mid September to mid December

Over the course of the year, the temperature in General Roca typically varies from 2°C to 31°C, and is rarely below -3°C or above 36°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 General Roca for warm-weather activities are from late February to early May and mid September to mid December.

Hottest
Jan
31°
Coldest
Jul
Wettest
Oct
36 mm
Driest
Aug
14 mm
Rain / yr
269 mm
43 wet days
Daylight
9.3–14.7 h
shortest–longest
Elevation
237 m
39.0°S
Clearest
Jan
24% cloud

General Roca is city and municipality in Río Negro Province, Argentina.

Density
149/km²
people per km²
Founded
1879

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

General Roca 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 September to mid December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in General Roca, 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 November 16 to March 14, with daily high temperatures above 26°C. The hottest month of the year in General Roca is January, with an average high of 31°C and low of 17°C.

The cool season lasts 3.2 months, from May 17 to August 22, with daily high temperatures below 16°C. The coldest month of the year in General Roca is July, with an average low of 2°C and high of 12°C.

Days typically run about 12°C warmer than nights, with the widest day–night swing (around 14°C) in December.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3117
Feb3017
Mar2614
Apr219
May166
Jun133
Jul122
Aug154
Sep186
Oct2210
Nov2613
Dec2916

How hot and cold General Roca 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 coldest nights, wind chill pulls the feels-like down to about -2°C (around July 17), with roughly 62 freezing days a year (feels-like at or below 0°C), worst in July.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan31311717
Feb29301617
Mar26261414
Apr212189
May161636
Jun131303
Jul1212-22
Aug151504
Sep181836
Oct2222810
Nov26261313
Dec29291616

Average hourly temperature in General Roca

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 31°C, and coldest before dawn in July, near C.

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

General Roca 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
Jan31° / 17°183.114.45.7
Feb30° / 17°22313.56.6
Mar26° / 14°253.512.38.1
Apr21° / 293.6117.8
May16° / 274.99.95.7
Jun13° / 204.49.33.9
Jul12° / 193.69.53.9
Aug15° / 142.910.55.4
Sep18° / 213.511.77.0
Oct22° / 10°364.3137.8
Nov26° / 13°223.214.18.0
Dec29° / 16°162.714.76.7

Chance of rain

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

General Roca gets about 269 mm of precipitation a year. On a typical day the chance of rain is mostly dry, and that barely changes with the seasons — rain is spread fairly evenly through the year.

October is the wettest month by volume, with 36 mm over about 4 wet days; August is the driest, with 14 mm.

0%10%20%30%JanFebMarAprMayJunJulAugSepOctNovDecmostly drysome rainMay 19 · 17%Dec 22 · 7%
Rain on a day (%)Rain days
Jan103
Feb113
Mar124
Apr114
May155
Jun154
Jul124
Aug103
Sep124
Oct134
Nov113
Dec83

Monthly rainfall

Over a full year, General Roca collects about 269 mm of rain across 43 wet days — roughly 22 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 36 mm, while August is the driest at just 14 mm. The three wettest months alone bring about 34% of the year’s total.

02550JanFebMarAprMayJunJulAugSepOctNovDec182225292720191421362216
Rainfall (mm)Rain days
Jan183
Feb223
Mar254
Apr294
May275
Jun204
Jul194
Aug143
Sep214
Oct364
Nov223
Dec163

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In General Roca, 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 19 and lasts for 5.8 months, ending around April 14. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 86% of the time on average.

The cloudier part of the year begins around April 15 and lasts for 6.1 months, ending around October 18. The cloudiest month is June, when it is overcast or mostly cloudy 49% 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 17 · 86%May 21 · 49%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan8614
Feb8416
Mar7723
Apr6634
May5248
Jun5149
Jul5743
Aug5743
Sep5941
Oct6535
Nov7426
Dec8317

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 42 min of light; the shortest, around June 9, only 9 h 18 min — a swing of roughly 5 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.46:268:53
Feb13.56:598:31
Mar12.37:317:49
Apr11.08:017:00
May9.98:306:23
Jun9.38:526:09
Jul9.58:516:21
Aug10.58:216:48
Sep11.77:327:17
Oct13.06:447:47
Nov14.16:108:21
Dec14.76:058:48

Sunny days

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

General Roca averages about 16 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 11 and 24 days.

The sunnier stretch runs 5.2 months, from around Nov 13 to Apr 18. The sunniest month is January, with roughly 23 sunny days (brilliant).

The greyest month is June, down near 11 sunny days — about 51% fewer than the January peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantJan 1224 daysJun 1411 days
Sunny daysSky
Jan24Brilliant
Feb21Bright
Mar20Bright
Apr16Bright
May12Mixed
Jun11Mixed
Jul14Mixed
Aug13Mixed
Sep13Mixed
Oct15Mixed
Nov17Bright
Dec21Bright

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 General Roca, the air stays dry or comfortable essentially all year. Even in February, the muggiest month, it feels humid or worse only about 5% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecdry
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan90631
Feb88750
Mar90730
Apr97300
May100000
Jun100000
Jul100000
Aug100000
Sep100000
Oct100000
Nov98200
Dec96310

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 General Roca is typically light breeze, near 14 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.3 months, from around Sep 14 to Feb 22. The windiest month is December, averaging about 17 km/h (light breeze).

The calmer part of the year runs from around Feb 23 to Sep 13, with May the calmest month at about 12 km/h.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezebreezyDec 11 · 17 km/hMay 15 · 12 km/h
Wind speed (km/h)Feels
Jan16light breeze
Feb15light breeze
Mar14light breeze
Apr13light breeze
May12light breeze
Jun13light breeze
Jul13light breeze
Aug13light breeze
Sep14light breeze
Oct16light breeze
Nov17light breeze
Dec17light breeze

Best time to visit General Roca

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early December, General Roca 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 times of year to visit General Roca for general outdoor tourist activities run from late February to early May and again from mid September to mid December, with a peak score in the last week of March.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationMar 24 · 8.4

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
Jan5.7good
Feb6.6good
Mar8.0ideal
Apr7.7ideal
May5.7good
Jun4.0fair
Jul3.9fair
Aug5.4fair
Sep7.0good
Oct7.8ideal
Nov8.0ideal
Dec6.7good

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 General Roca for hot-weather activities is from early November to late March, with a peak score in the third week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 15 · 8.6

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 General Roca, 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 31°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 12°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, General Roca sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 3 days see rain.

UV index (midday) in General Roca 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 General Roca peaks around December 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateLowModerateVery highExtremeDec 20UV 13Jun 23UV 2
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar8Very high
Apr5High
May3Moderate
Jun2Low
Jul2Low
Aug3Moderate
Sep5Moderate
Oct8Very high
Nov10Extreme
Dec13Extreme

Average hourly UV index in General Roca

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 December the burn window is concentrated in the middle of the day: about 9.5 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)
Jan96.5
Feb8.56.5
Mar74
Apr50
May00
Jun00
Jul00
Aug00
Sep50
Oct7.54
Nov8.56
Dec9.57
Almanac & agriculture

Growing season

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

General Roca is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 27 to May 22 (269 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freereliably frost-freeAug 2790%May 2290%
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May9311
Jun8130
Jul7231
Aug8327
Sep970
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. General Roca banks about 2,222 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan440
Feb363
Mar309
Apr154
May31
Jun0
Jul0
Aug4
Sep69
Oct180
Nov284
Dec389

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.

General Roca receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.0 and 8.7 kWh/m².

The brighter stretch of the year lasts 5.8 months, from around Sep 25 to Mar 20. The brightest month is December, averaging about 8.5 kWh/m² (intense).

The dimmest month is June, down near 2.0 kWh/m² — roughly 76% less than the December peak.

012345678910JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 268.7 kWhJun 202.0 kWh
Solar energy (kWh/m²)Level
Jan8.4Intense
Feb7.1Intense
Mar5.4Bright
Apr3.7Moderate
May2.5Moderate
Jun2.0Moderate
Jul2.3Moderate
Aug3.3Moderate
Sep4.7Bright
Oct6.3Intense
Nov7.9Intense
Dec8.6Intense

Where is General Roca?

General Roca sits at 39.0°S, 67.6°W, 237 m above sea level, in Argentina. The nearest listed city is Allen, 22 km away.

Topography around General Roca

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

Within 3 km, the terrain around General Roca has only modest variations in elevation — a maximum elevation change of 41 m around an average of 238 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 251 m; within 80 km, large variations in elevation — a maximum elevation change of 764 m.

The land around General Roca is covered by artificial surfaces (49%) within 3 km, shrubs (61%) within 16 km, and shrubs (89%) within 80 km.

3 km
41 m
16 km
251 m
80 km
764 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Allen 22 km · Cipolletti 37 km · Neuquén 42 km · Villa Regina 44 km · Cinco Saltos 48 km · Centenario 53 km · Plottier 57 km · Catriel 130 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 General Roca (-39.0333°, -67.5833°, elevation 237 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).