Climate and average weather in Bermejo

In Bermejo, the summers are humid, hot, wet, and mostly cloudy and the winters are mild and partly cloudy.

Best: late April to mid September

Over the course of the year, the temperature in Bermejo typically varies from 8°C to 31°C, and is rarely below 1°C or above 38°C. December is the hottest month of the year, while June is the coldest.

Based on the travel score, the best time of year to visit Bermejo for warm-weather activities is from late April to mid September.

Hottest
Dec
31°
Coldest
Jun
10°
Wettest
Jan
276 mm
Driest
Jul
10 mm
Rain / yr
1519 mm
131 wet days
Daylight
10.6–13.4 h
shortest–longest
Elevation
416 m
22.7°S
Clearest
Aug
35% cloud

Bermejo is town of Bolivia.

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

Bermejo 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 April to mid September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 5.7 months, from September 18 to March 9, with daily high temperatures above 29°C. The hottest month of the year in Bermejo is December, with an average high of 31°C and low of 20°C.

The cool season lasts 2.6 months, from May 11 to July 28, with daily high temperatures below 23°C. The coldest month of the year in Bermejo is June, with an average low of 10°C and high of 21°C.

Days typically run about 12°C warmer than nights, with the widest day–night swing (around 16°C) in August.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3020
Feb2920
Mar2819
Apr2516
May2213
Jun2110
Jul228
Aug2510
Sep2813
Oct3017
Nov3018
Dec3120

How hot and cold Bermejo 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, Bermejo feels like about 34°C (around December 28). About 58 days a year carry some heat stress, peaking in December.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan33302020
Feb31292020
Mar29281919
Apr25251616
May22221313
Jun2121910
Jul222278
Aug2525910
Sep28281313
Oct30301717
Nov31301818
Dec33312020

Average hourly temperature in Bermejo

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 December afternoons, near 31°C, and coldest before dawn in June, near 10°C.

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

Bermejo 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
Jan30° / 20°27619.113.23.7
Feb29° / 20°26417.812.84.1
Mar28° / 19°23917.912.24.9
Apr25° / 16°11211.611.56.4
May22° / 13°407.210.97.1
Jun21° / 10°133.410.67.5
Jul22° / 102.910.78.0
Aug25° / 10°112.611.28.4
Sep28° / 13°274.811.96.8
Oct30° / 17°9811.512.54.8
Nov30° / 18°16414.313.14.2
Dec31° / 20°26617.913.43.7

Chance of rain

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

Bermejo gets about 1519 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 6.1 months, from around Oct 13 to Apr 17, peaking in February at about 65% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 25.

January is the wettest month by volume, with 276 mm over about 19 wet days; July is the driest, with 10 mm.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 8 · 65%Jul 25 · 8%
Rain on a day (%)Rain days
Jan6219
Feb6318
Mar5818
Apr3812
May237
Jun123
Jul93
Aug83
Sep175
Oct3712
Nov4814
Dec5718

Monthly rainfall

Over a full year, Bermejo collects about 1519 mm of rain across 131 wet days — roughly 127 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 276 mm, while July is the driest at just 10 mm. The three wettest months alone bring about 53% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec276264239112401310112798164266
Rainfall (mm)Rain days
Jan27619
Feb26418
Mar23918
Apr11212
May407
Jun133
Jul103
Aug113
Sep275
Oct9812
Nov16414
Dec26618

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Bermejo, 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 4.7 months, ending around October 11. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 71% of the time on average.

The cloudier part of the year begins around October 12 and lasts for 7.3 months, ending around May 20. The cloudiest month is December, when it is overcast or mostly cloudy 72% 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 25 · 72%Dec 5 · 25%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan3070
Feb3070
Mar3070
Apr3466
May4357
Jun5149
Jul6436
Aug7129
Sep6436
Oct4357
Nov3565
Dec2872

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 13 h 24 min of light; the shortest, around June 9, only 10 h 36 min — a swing of roughly 2 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan13.25:497:04
Feb12.86:096:55
Mar12.26:226:32
Apr11.56:336:02
May10.96:465:41
Jun10.66:595:36
Jul10.77:015:45
Aug11.26:455:58
Sep11.96:166:08
Oct12.55:466:18
Nov13.15:296:36
Dec13.45:326:55

Sunny days

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

Bermejo averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 19 days.

The sunnier stretch runs 4.9 months, from around May 17 to Oct 12. The sunniest month is August, with roughly 19 sunny days (bright).

The greyest month is December, down near 3 sunny days — about 83% fewer than the August peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantAug 2419 daysDec 72 days
Sunny daysSky
Jan4Gloomy
Feb3Gloomy
Mar4Gloomy
Apr6Gloomy
May9Mixed
Jun12Mixed
Jul17Bright
Aug19Bright
Sep15Bright
Oct9Mixed
Nov5Gloomy
Dec3Gloomy

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 Bermejo, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.4 months, from around October 20 to May 2. The muggiest month is January, when the air feels humid, muggy or worse about 98% of the time.

The most comfortable stretch runs from around May 3 to October 19, and August is the most comfortable month — the air is dry or comfortable 95% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 16 · 96%Jan 22 · 1%oppressivehumidcomfortablemuggydryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan02839502
Feb131239442
Mar161940341
Apr10192830120
May3924231310
Jun622314100
Jul77185000
Aug78174000
Sep662012200
Oct2824301710
Nov8162837110
Dec151541371

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 Bermejo is steady company: average speeds sit near 5 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmSep 22 · 6 km/hMay 22 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May4calm
Jun4calm
Jul5calm
Aug5calm
Sep6calm
Oct6calm
Nov5calm
Dec5calm

Hazard calendar for Bermejo

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Bermejo's monsoon runs November–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Bermejo

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early May, Bermejo 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 time of year to visit Bermejo for general outdoor tourist activities is from late April to mid September, with a peak score in the first week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 3 · 8.5

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
Jan3.7fair
Feb4.1fair
Mar4.9fair
Apr6.4good
May7.1good
Jun7.5good
Jul8.0ideal
Aug8.3ideal
Sep6.8good
Oct4.8fair
Nov4.2fair
Dec3.8fair

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 Bermejo for hot-weather activities is from late July to mid October, with a peak score in the last week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 31 · 8.1

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 Bermejo, 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 December (highs near 31°C), the essentials are light clothes, rain gear and sun protection. In the cold season around June (highs near 21°C), pack a light layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In December, Bermejo sees daytime highs around 31°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

UV index (midday) in Bermejo 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 Bermejo peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 18UV 15Jul 12UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar13Extreme
Apr9Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep10Very high
Oct9Very high
Nov13Extreme
Dec14Extreme

Average hourly UV index in Bermejo

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
Feb8.57
Mar86
Apr74.5
May63
Jun5.50.5
Jul50
Aug6.53.5
Sep7.55
Oct7.55
Nov8.56.5
Dec97

Air quality in Bermejo by month

GoodModeratePoorUnhealthyVery unhealthy

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 Bermejo is worst in November — around 24 µg/m³ PM2.5 (moderate), about 6.0× the cleanest month (May, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1224 µg/m³May 174 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar6Good
Apr5Good
May4Good
Jun5Good
Jul5Good
Aug12Good
Sep18Moderate
Oct20Moderate
Nov24Moderate
Dec9Good
Almanac & agriculture

Growing season

Chance of a frost-free day

Bermejo is mild enough that a frost-free day stays more likely than not even in midwinter.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDec
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun990
Jul960
Aug980
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)

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. Bermejo banks about 3,994 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan472
Feb405
Mar412
Apr320
May230
Jun155
Jul143
Aug232
Sep320
Oct413
Nov424
Dec467

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.

Bermejo receives about 4.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.0 and 5.7 kWh/m².

The brighter stretch of the year lasts 6.8 months, from around Aug 13 to Mar 6. The brightest month is December, averaging about 5.4 kWh/m² (bright).

The dimmest month is May, down near 3.0 kWh/m² — roughly 44% less than the December peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 295.7 kWhMay 193.0 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.0Bright
Mar4.1Bright
Apr3.4Moderate
May3.0Moderate
Jun3.1Moderate
Jul3.6Moderate
Aug4.6Bright
Sep5.2Bright
Oct5.2Bright
Nov5.3Bright
Dec5.4Bright

Where is Bermejo?

Bermejo sits at 22.7°S, 64.3°W, 416 m above sea level, in Bolivia. The nearest listed city is San Ramón de la Nueva Orán, 45 km away.

Profesor Salvador MazzaYacuiba

Topography around Bermejo

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

Within 3 km, the terrain around Bermejo has significant variations in elevation — a maximum elevation change of 274 m around an average of 438 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 820 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,430 m.

The land around Bermejo is covered by trees (46%) within 3 km, trees (79%) within 16 km, and trees (73%) within 80 km.

3 km
274 m
16 km
820 m
80 km
4,430 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: San Ramón de la Nueva Orán 45 km · General Mosconi 56 km · Embarcación 58 km · Tartagal 60 km · Pichanal 66 km · Santa Rosa 74 km · Profesor Salvador Mazza 101 km · Yacuiba 105 km

Bolivia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$5,148
2025
Happiness
5.8 / 10
World Happiness, 2025
Homicide rate
4.4
per 100k, 2023
Road deaths
21.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 521
Religion
Roman Catholic 65%Protestant 20%none 6%other 5%

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 Bermejo (-22.7321°, -64.3372°, elevation 416 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).