Climate and average weather in Nova Mamoré

In Nova Mamoré, the weather is muggy, sweltering, wet, and partly cloudy and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around January.

Best: late May to early August

Over the course of the year, the temperature in Nova Mamoré typically varies from 20°C to 33°C, and is rarely below 16°C or above 36°C. September is the hottest month of the year, while February is the coldest.

Based on the travel score, the best time of year to visit Nova Mamoré for warm-weather activities is from late May to early August.

Hottest
Sep
33°
Coldest
Feb
23°
Wettest
Jan
253 mm
Driest
Jul
15 mm
Rain / yr
1680 mm
210 wet days
Daylight
11.4–12.6 h
shortest–longest
Elevation
133 m
10.4°S
Clearest
Jul
33% cloud

Nova Mamoré 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 early August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Nova Mamoré stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 33°C and low of 22°C; the coolest is February, with an average low of 23°C and high of 30°C.

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

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3023
Feb3023
Mar3023
Apr3023
May3022
Jun3121
Jul3220
Aug3321
Sep3322
Oct3323
Nov3223
Dec3123

How hot and cold Nova Mamoré 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, Nova Mamoré feels like about 38°C (around October 12). Nearly every day a year carries some heat stress, peaking in October.

15°20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan35302323
Feb35302323
Mar36302323
Apr36302323
May34302222
Jun33312121
Jul33322020
Aug35332121
Sep37332222
Oct38332323
Nov37322323
Dec36312323

Average hourly temperature in Nova Mamoré

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 September afternoons, near 33°C, and coldest before dawn in February, near 23°C.

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

Nova Mamoré 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°25327.312.52.8
Feb30° / 23°24224.912.32.8
Mar30° / 23°24726.912.12.8
Apr30° / 23°16522.711.83.2
May30° / 22°7515.411.54.2
Jun31° / 21°265.711.45.3
Jul32° / 20°15311.55.3
Aug33° / 21°32511.74.0
Sep33° / 22°7011.611.93.2
Oct33° / 23°12518.612.22.8
Nov32° / 23°18622.612.52.8
Dec31° / 23°24426.112.62.8

Chance of rain

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

Nova Mamoré gets about 1680 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 6.8 months, from around Oct 14 to May 8, peaking in February at about 90% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 28.

January is the wettest month by volume, with 253 mm over about 27 wet days; July is the driest, with 15 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetFeb 16 · 90%Jul 28 · 8%
Rain on a day (%)Rain days
Jan8827
Feb8925
Mar8727
Apr7523
May5015
Jun206
Jul103
Aug175
Sep3912
Oct5919
Nov7523
Dec8426

Monthly rainfall

Over a full year, Nova Mamoré collects about 1680 mm of rain across 210 wet days — roughly 140 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 253 mm, while July is the driest at just 15 mm. The three wettest months alone bring about 44% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec2532422471657526153270125186244
Rainfall (mm)Rain days
Jan25327
Feb24225
Mar24727
Apr16523
May7515
Jun266
Jul153
Aug325
Sep7012
Oct12519
Nov18623
Dec24426

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Nova Mamoré, 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 15 and lasts for 4.9 months, ending around October 9. 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 October 10 and lasts for 7.1 months, ending around May 14. The cloudiest month is February, when it is overcast or mostly cloudy 95% 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 23 · 84%Jan 10 · 5%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan595
Feb595
Mar694
Apr1684
May3763
Jun6931
Jul8317
Aug7822
Sep5545
Oct2872
Nov1288
Dec991

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 36 min of light; the shortest, around May 30, only 11 h 24 min — a swing of roughly 1 h 12 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.56:146:47
Feb12.36:266:46
Mar12.16:296:33
Apr11.86:286:15
May11.56:326:03
Jun11.46:406:03
Jul11.56:446:10
Aug11.76:366:15
Sep11.96:176:14
Oct12.25:596:13
Nov12.55:526:21
Dec12.65:596:36

Sunny days

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

Nova Mamoré averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 22 days.

The sunnier stretch runs 4.1 months, from around May 25 to Sep 26. The sunniest month is July, with roughly 21 sunny days (bright).

The greyest month is January, down near 0 sunny days — about 98% fewer than the July peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2622 daysJan 30 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr1Gloomy
May5Gloomy
Jun15Mixed
Jul21Bright
Aug19Bright
Sep10Mixed
Oct3Gloomy
Nov1Gloomy
Dec1Gloomy

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.

Nova Mamoré is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in August, the mildest month, the air is dry or comfortable only 10% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 1 · 11%Jan 1 · 0%miserablemuggyoppressivehumidhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00006931
Feb00006634
Mar00005842
Apr01144648
May023125429
Jun12721663
Jul451635400
Aug471727451
Sep13514734
Oct00048114
Nov00026732
Dec00016831

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 Nova Mamoré is steady company: average speeds sit near 6 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmJul 25 · 7 km/hMar 22 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb6calm
Mar5calm
Apr5calm
May6calm
Jun6calm
Jul6calm
Aug7calm
Sep6calm
Oct6calm
Nov6calm
Dec6calm

Hazard calendar for Nova Mamoré

In seasonPeak

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

Nova Mamoré's rainy season runs October–April, 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 Nova Mamoré

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late July, Nova Mamoré 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 Nova Mamoré for general outdoor tourist activities is from late May to early August, with a peak score in the third week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 20 · 5.4

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
Jan2.8poor
Feb2.8poor
Mar2.8poor
Apr3.2poor
May4.2fair
Jun5.3fair
Jul5.2fair
Aug4.0fair
Sep3.2poor
Oct2.8poor
Nov2.8poor
Dec2.8poor

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 Nova Mamoré for hot-weather activities is from late May to early September, with a peak score in the third week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 17 · 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 Nova Mamoré, 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.

Nova Mamoré packs about the same all year — highs hold near 33°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 September, Nova Mamoré sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

UV index (midday) in Nova Mamoré 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 Nova Mamoré peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 12 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 19UV 15Sep 12UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug6High
Sep3Moderate
Oct12Extreme
Nov13Extreme
Dec14Extreme

Average hourly UV index in Nova Mamoré

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
Mar8.56.5
Apr7.56
May7.55
Jun6.54.5
Jul6.54
Aug61.5
Sep40
Oct7.55.5
Nov86
Dec8.56.5

Air quality in Nova Mamoré 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 Nova Mamoré is worst in September — around 78 µg/m³ PM2.5 (unhealthy), about 9.3× the cleanest month (May, 8 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyModerateSep 1275 µg/m³May 218 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar13Moderate
Apr10Good
May8Good
Jun9Good
Jul16Moderate
Aug63Unhealthy
Sep78Unhealthy
Oct29Moderate
Nov17Moderate
Dec12Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Nova Mamoré 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. Nova Mamoré banks about 6,111 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)
Jan517
Feb465
Mar518
Apr497
May496
Jun470
Jul486
Aug527
Sep537
Oct555
Nov519
Dec525

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.

Nova Mamoré receives about 4.9 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.2 and 5.6 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseSep 265.6 kWhMay 264.2 kWh
Solar energy (kWh/m²)Level
Jan4.8Bright
Feb4.6Bright
Mar4.6Bright
Apr4.5Bright
May4.3Bright
Jun4.5Bright
Jul4.9Bright
Aug5.4Bright
Sep5.6Bright
Oct5.5Bright
Nov5.1Bright
Dec4.9Bright

Where is Nova Mamoré?

Nova Mamoré sits at 10.4°S, 65.3°W, 133 m above sea level, in Brazil. The nearest listed city is Guajará Mirim, 42 km away.

Candeias do Jamari

Topography around Nova Mamoré

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

Within 3 km, the terrain around Nova Mamoré has only modest variations in elevation — a maximum elevation change of 58 m around an average of 136 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, significant variations in elevation — a maximum elevation change of 372 m.

The land around Nova Mamoré is covered by grassland (54%) and trees (35%) within 3 km, trees (55%) and grassland (39%) within 16 km, and trees (78%) and grassland (20%) within 80 km.

3 km
58 m
16 km
135 m
80 km
372 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Guajará Mirim 42 km · Guayaramerín 47 km · Riberalta 104 km · Buritis 165 km · Plácido de Castro 203 km · Alto Paraíso 233 km · Porto Velho 240 km · Candeias do Jamari 252 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Nova Mamoré (-10.4019°, -65.3267°, elevation 133 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).