Climate and average weather in Ascención de Guarayos

In Ascención de Guarayos, the weather is muggy, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around January.

Best: early May to mid August

Over the course of the year, the temperature in Ascención de Guarayos typically varies from 17°C to 32°C, and is rarely below 11°C or above 36°C. October is the hottest month of the year, while June is the coldest.

Based on the travel score, the best time of year to visit Ascención de Guarayos for warm-weather activities is from early May to mid August.

Hottest
Oct
32°
Coldest
Jun
18°
Wettest
Jan
295 mm
Driest
Jul
35 mm
Rain / yr
1698 mm
180 wet days
Daylight
11.1–12.9 h
shortest–longest
Elevation
248 m
15.9°S
Clearest
Aug
38% cloud

Ascención de Guarayos 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 May to mid August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Ascención de Guarayos stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 32°C and low of 22°C; the coolest is June, with an average low of 18°C and high of 27°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 12°C) in August.

10°15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3023
Feb3023
Mar3023
Apr2921
May2719
Jun2718
Jul2717
Aug3018
Sep3121
Oct3222
Nov3122
Dec3023

How hot and cold Ascención de Guarayos 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, Ascención de Guarayos feels like about 35°C (around October 21). About 219 days a year carry some heat stress, peaking in October.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan35302323
Feb34302323
Mar34302323
Apr32292121
May28271919
Jun27271818
Jul28271717
Aug30301818
Sep33312121
Oct34322222
Nov34312222
Dec34302323

Average hourly temperature in Ascención de Guarayos

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 October afternoons, near 32°C, and coldest before dawn in June, near 18°C.

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

Ascención de Guarayos 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° / 23°29525.512.83.1
Feb30° / 23°24622.912.53.2
Mar30° / 23°18522.512.13.5
Apr29° / 21°10414.311.74.7
May27° / 19°7110.311.36.2
Jun27° / 18°537.111.17.0
Jul27° / 17°354.811.17.4
Aug30° / 18°455.111.55.9
Sep31° / 21°92911.94.5
Oct32° / 22°13915.112.43.7
Nov31° / 22°1931912.73.5
Dec30° / 23°24224.212.93.1

Chance of rain

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

Ascención de Guarayos gets about 1698 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.8 months, from around Oct 19 to Apr 13, peaking in February at about 84% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 29.

January is the wettest month by volume, with 295 mm over about 26 wet days; July is the driest, with 35 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 2 · 84%Jul 29 · 14%
Rain on a day (%)Rain days
Jan8226
Feb8123
Mar7223
Apr4814
May3410
Jun247
Jul165
Aug175
Sep309
Oct4815
Nov6319
Dec7824

Monthly rainfall

Over a full year, Ascención de Guarayos collects about 1698 mm of rain across 180 wet days — roughly 142 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 295 mm, while July is the driest at just 35 mm. The three wettest months alone bring about 46% of the year’s total.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec2952461851047153354592139193242
Rainfall (mm)Rain days
Jan29526
Feb24623
Mar18523
Apr10414
May7110
Jun537
Jul355
Aug455
Sep929
Oct13915
Nov19319
Dec24224

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Ascención de Guarayos, 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 April 18 and lasts for 5.9 months, ending around October 13. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 75% of the time on average.

The cloudier part of the year begins around October 14 and lasts for 6.1 months, ending around April 17. The cloudiest month is February, when it is overcast or mostly cloudy 84% 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 30 · 76%Feb 14 · 14%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1783
Feb1684
Mar2476
Apr4159
May4852
Jun6238
Jul7228
Aug7525
Sep6337
Oct4060
Nov2773
Dec1783

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 12 h 54 min of light; the shortest, around May 29, only 11 h 06 min — a swing of roughly 1 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.85:576:48
Feb12.56:116:43
Mar12.16:196:26
Apr11.76:246:02
May11.36:315:47
Jun11.16:415:45
Jul11.16:445:53
Aug11.56:336:01
Sep11.96:106:04
Oct12.45:476:09
Nov12.75:356:21
Dec12.95:416:37

Sunny days

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

Ascención de Guarayos averages about 9 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 19 days.

The sunnier stretch runs 5.5 months, from around Apr 29 to Oct 11. The sunniest month is July, with roughly 18 sunny days (bright).

The greyest month is January, down near 2 sunny days — about 91% fewer than the July peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2919 daysJan 21 days
Sunny daysSky
Jan2Gloomy
Feb2Gloomy
Mar4Gloomy
Apr7Gloomy
May10Mixed
Jun13Mixed
Jul18Bright
Aug19Bright
Sep14Mixed
Oct8Gloomy
Nov4Gloomy
Dec2Gloomy

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 Ascención de Guarayos, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.0 months, from around September 29 to April 30. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around May 1 to September 28, and July is the most comfortable month — the air is dry or comfortable 36% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 24 · 40%Jan 2 · 0%miserablemuggyhumidoppressivecomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00146530
Feb01266626
Mar003106027
Apr438135517
May10111319462
Jun14101333290
Jul23132032130
Aug21112031170
Sep1381429370
Oct24718635
Nov124156315
Dec00267122

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

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeAug 17 · 10 km/hMar 15 · 7 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar8calm
Apr8calm
May9calm
Jun9calm
Jul10calm
Aug10calm
Sep10calm
Oct9calm
Nov9calm
Dec9calm

Hazard calendar for Ascención de Guarayos

In seasonPeak

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

Ascención de Guarayos's rainy season runs October–March, when most of the year's rain falls.

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

Best time to visit Ascención de Guarayos

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid May, Ascención de Guarayos 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 Ascención de Guarayos for general outdoor tourist activities is from mid May to mid August, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 13 · 7.5

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
Jan3.1poor
Feb3.2poor
Mar3.5fair
Apr4.7fair
May6.2good
Jun7.0good
Jul7.4good
Aug5.9good
Sep4.5fair
Oct3.7fair
Nov3.5poor
Dec3.1poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Ascención de Guarayos for hot-weather activities run from late April to mid May and again from late May to late September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 3 · 8.3

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 Ascención de Guarayos, 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.

Ascención de Guarayos packs about the same all year — highs hold near 32°C. Across the year the things worth having are light clothes, rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In October, Ascención de Guarayos sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

UV index (midday) in Ascención de Guarayos 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 Ascención de Guarayos peaks around January 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeJan 18UV 15Sep 15UV 7
UV index (midday)Level
Jan16Extreme
Feb14Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug8Very high
Sep7High
Oct8Very high
Nov13Extreme
Dec14Extreme

Average hourly UV index in Ascención de Guarayos

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 8.5 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)
Jan8.57
Feb8.56.5
Mar86.5
Apr7.55.5
May6.54.5
Jun6.53.5
Jul6.53.5
Aug6.53.5
Sep62.5
Oct74
Nov8.56.5
Dec8.56.5

Air quality in Ascención de Guarayos 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 Ascención de Guarayos is worst in September — around 154 µg/m³ PM2.5 (very unhealthy), about 24.0× the cleanest month (May, 6 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateSep 16142 µg/m³May 137 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr7Good
May6Good
Jun8Good
Jul18Moderate
Aug60Unhealthy
Sep154Very unhealthy
Oct64Unhealthy
Nov22Moderate
Dec11Good
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Ascención de Guarayos 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. Ascención de Guarayos banks about 5,540 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan512
Feb455
Mar502
Apr459
May413
Jun373
Jul377
Aug439
Sep480
Oct521
Nov497
Dec513

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.

Ascención de Guarayos receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.7 and 5.6 kWh/m².

The brighter stretch of the year lasts 7.1 months, from around Aug 11 to Mar 13. The brightest month is October, averaging about 5.6 kWh/m² (bright).

The dimmest month is May, down near 3.9 kWh/m² — roughly 30% less than the October peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseOct 125.6 kWhMay 303.7 kWh
Solar energy (kWh/m²)Level
Jan5.1Bright
Feb4.9Bright
Mar4.8Bright
Apr4.6Bright
May3.9Moderate
Jun3.8Moderate
Jul4.2Bright
Aug5.0Bright
Sep5.5Bright
Oct5.6Bright
Nov5.4Bright
Dec5.2Bright

Where is Ascención de Guarayos?

Ascención de Guarayos sits at 15.9°S, 63.2°W, 248 m above sea level, in Bolivia. The nearest listed city is Montero, 161 km away.

MonteroWarnesVilla YapacaníSanta CruzCotocaTrinidadEl TornoSan Ignacio de Velasco

Topography around Ascención de Guarayos

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

Within 3 km, the terrain around Ascención de Guarayos has only modest variations in elevation — a maximum elevation change of 76 m around an average of 220 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 217 m; within 80 km, large variations in elevation — a maximum elevation change of 700 m.

The land around Ascención de Guarayos is covered by grassland (44%) and trees (40%) within 3 km, trees (58%) and grassland (26%) within 16 km, and trees (71%) within 80 km.

3 km
76 m
16 km
217 m
80 km
700 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
Nearby: Montero 161 km · Warnes 181 km · Villa Yapacaní 181 km · Santa Cruz 211 km · Cotoca 214 km · Trinidad 218 km · El Torno 235 km · San Ignacio de Velasco 244 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 Ascención de Guarayos (-15.893°, -63.1885°, elevation 248 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).