Climate and average weather in Bubanza

In Bubanza, the weather is warm, wet, and mostly cloudy and remarkably steady, with daytime highs holding near warm levels all year. The wettest stretch peaks around November.

Best: late May to early September

Over the course of the year, the temperature in Bubanza typically varies from 13°C to 25°C, and is rarely below 12°C or above 28°C. September is the hottest month of the year, while April is the coldest.

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

Hottest
Sep
25°
Coldest
Apr
15°
Wettest
Nov
359 mm
Driest
Jul
31 mm
Rain / yr
2733 mm
229 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
1,079 m
3.1°S
Clearest
Jul
63% cloud

Bubanza is place in Bubanza Province, Burundi.

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

Bubanza 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 September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Bubanza stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 25°C and low of 15°C; the coolest is April, with an average low of 15°C and high of 23°C.

Days typically run about 10°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2415
Feb2415
Mar2415
Apr2315
May2314
Jun2414
Jul2413
Aug2514
Sep2515
Oct2415
Nov2315
Dec2415

Average hourly temperature in Bubanza

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 25°C, and coldest before dawn in April, near 15°C.

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

Bubanza 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
Jan24° / 15°26922.912.24.7
Feb24° / 15°25321.612.14.5
Mar24° / 15°34527.5124.0
Apr23° / 15°35728.211.93.7
May23° / 14°1942011.95.1
Jun24° / 14°657.611.87.0
Jul24° / 13°31411.87.8
Aug25° / 14°757.611.97.1
Sep25° / 15°15413.1126.0
Oct24° / 15°3282312.14.6
Nov23° / 15°35927.512.13.8
Dec24° / 15°30325.712.24.2

Chance of rain

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

Bubanza gets about 2733 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 7.3 months, from around Oct 6 to May 16, peaking in April at about 95% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 12.

November is the wettest month by volume, with 359 mm over about 28 wet days; July is the driest, with 31 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetApr 8 · 95%Jul 12 · 11%
Rain on a day (%)Rain days
Jan7423
Feb7722
Mar8928
Apr9428
May6420
Jun268
Jul144
Aug258
Sep4413
Oct7323
Nov9128
Dec8326

Monthly rainfall

Over a full year, Bubanza collects about 2733 mm of rain across 229 wet days — roughly 228 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 359 mm, while July is the driest at just 31 mm. The three wettest months alone bring about 39% of the year’s total.

050100150200250300350400JanFebMarAprMayJunJulAugSepOctNovDec269253345357194653175154328359303
Rainfall (mm)Rain days
Jan26923
Feb25322
Mar34528
Apr35728
May19420
Jun658
Jul314
Aug758
Sep15413
Oct32823
Nov35928
Dec30326

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Bubanza, 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 14 and lasts for 4.6 months, ending around September 29. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 42% of the time on average.

The cloudier part of the year begins around September 30 and lasts for 7.4 months, ending around May 13. The cloudiest month is November, when it is overcast or mostly cloudy 96% 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 11 · 46%Nov 11 · 3%mostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan1090
Feb1288
Mar892
Apr595
May2080
Jun3268
Jul4258
Aug3466
Sep2179
Oct991
Nov496
Dec793

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. Close to the equator, Bubanza barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.26:076:17
Feb12.16:146:20
Mar12.06:116:13
Apr11.96:056:01
May11.96:035:55
Jun11.86:085:57
Jul11.86:136:03
Aug11.96:106:03
Sep12.05:575:56
Oct12.15:455:50
Nov12.15:435:52
Dec12.25:536:04

Sunny days

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

Bubanza averages about 1 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 5 days.

The sunnier stretch runs 4.3 months, from around May 20 to Sep 27. The sunniest month is July, with roughly 5 sunny days (gloomy).

The greyest month is November, down near 0 sunny days — about 99% fewer than the July peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedJul 85 daysNov 130 days
Sunny daysSky
Jan1Gloomy
Feb1Gloomy
Mar1Gloomy
Apr0Gloomy
May1Gloomy
Jun3Gloomy
Jul5Gloomy
Aug3Gloomy
Sep2Gloomy
Oct0Gloomy
Nov0Gloomy
Dec0Gloomy

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

The more humid part of the year lasts 5.1 months, from around December 18 to May 21. The muggiest month is April, when the air feels humid, muggy or worse about 32% of the time.

The most comfortable stretch runs from around May 22 to November 22, and July is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 8 · 100%Apr 28 · 66%humidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)
Jan137413
Feb157213
Mar47521
Apr26632
May186319
Jun61372
Jul83170
Aug76240
Sep58411
Oct30655
Nov8839
Dec117811

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

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmAug 21 · 5 km/hMar 28 · 4 km/h
Wind speed (km/h)Feels
Jan4calm
Feb4calm
Mar4calm
Apr4calm
May5calm
Jun5calm
Jul5calm
Aug5calm
Sep5calm
Oct5calm
Nov4calm
Dec4calm

Best time to visit Bubanza

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late August, Bubanza 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 Bubanza for general outdoor tourist activities is from late May to early September, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 12 · 7.9

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
Jan4.7fair
Feb4.5fair
Mar4.0fair
Apr3.7fair
May5.2fair
Jun7.0good
Jul7.7ideal
Aug7.0good
Sep6.0good
Oct4.6fair
Nov3.8fair
Dec4.2fair

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 Bubanza for hot-weather activities is from late May to late September, with a peak score in the second week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 14 · 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 Bubanza, 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.

Bubanza packs about the same all year — highs hold near 25°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, Bubanza sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

UV index (midday) in Bubanza 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 Bubanza peaks around March 20 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeMar 20UV 16Jun 21UV 10
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Very high
Jul10Extreme
Aug10Very high
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Average hourly UV index in Bubanza

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 March 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)
Jan86.5
Feb86.5
Mar8.57
Apr86.5
May86
Jun7.55
Jul75
Aug75
Sep86
Oct86.5
Nov86
Dec86

Air quality in Bubanza 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 Bubanza is worst in August — around 72 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyPoorAug 2171 µg/m³Apr 1950 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb58Unhealthy
Mar54Poor
Apr49Poor
May52Poor
Jun61Unhealthy
Jul60Unhealthy
Aug72Unhealthy
Sep69Unhealthy
Oct58Unhealthy
Nov52Poor
Dec53Poor
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Bubanza 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. Bubanza banks about 3,332 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around September.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan288
Feb267
Mar288
Apr267
May273
Jun257
Jul267
Aug291
Sep296
Oct293
Nov267
Dec279

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.

Bubanza receives about 5.0 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.3 and 5.5 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseSep 215.5 kWhApr 274.3 kWh
Solar energy (kWh/m²)Level
Jan5.3Bright
Feb5.4Bright
Mar5.1Bright
Apr4.5Bright
May4.6Bright
Jun4.8Bright
Jul5.0Bright
Aug5.2Bright
Sep5.5Bright
Oct5.0Bright
Nov4.6Bright
Dec4.8Bright

Where is Bubanza?

Bubanza sits at 3.1°S, 29.4°E, 1,079 m above sea level, in Burundi. The nearest listed city is Mpanda, 10 km away.

KayanzaGatumbaBujumburaCibitokeUviraNgoziBugarama

Topography around Bubanza

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

Within 3 km, the terrain around Bubanza has significant variations in elevation — a maximum elevation change of 390 m around an average of 1,076 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,780 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,681 m.

The land around Bubanza is covered by grassland (49%) and trees (42%) within 3 km, grassland (38%), trees (35%) and cropland (20%) within 16 km, and grassland (39%), trees (27%) and cropland (21%) within 80 km.

3 km
390 m
16 km
1,780 m
80 km
2,681 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Mpanda 10 km · Kayanza 32 km · Gatumba 32 km · Bujumbura 34 km · Cibitoke 37 km · Uvira 45 km · Ngozi 52 km · Bugarama 61 km

Burundi travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$234
2025
Happiness
3.8 / 10
World Happiness, 2020
Homicide rate
5.6
per 100k, 2016
Road deaths
35.5
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 94%Muslim 3%other 1%none 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 Bubanza (-3.0804°, 29.391°, elevation 1,079 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).