Bubanza weather in September

In September, Bubanza sees average daytime highs of 25°C and overnight lows near 15°C, with 154 mm of rain across 13.1 wet days and about 12 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Bubanza's 4th-clearest and 2nd-windiest month. For the whole year in context, see Bubanza's year-round climate.

Daytime high
25°
1st warmest
Overnight low
15°
8th coldest
Rainfall
154 mm
13.1 wet days
Daylight
12 hours
5:57 AM – 5:56 PM
Cloud cover
75%
4th clearest
Wind
5 km/h
2nd windiest
Solar energy
5.46 kWh/m²
Travel score
6.0
out of 10

Bubanza is place in Bubanza Province, Burundi.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Bubanza reaches about 25°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12514
22514
32514
42514
52514
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262515
272515
282515
292515
302515

Bubanza weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

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

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22575
32575
42476
52476
62377
72278
82278
92278
102278
112278
122179
132179
142179
152179
162179
172179
182179
192179
202080
212179
222080
232080
242080
252080
261981
271882
281783
291783
301783

Chance of precipitation in September

Any precipitation

Bubanza gets around 154 mm of rain over 13.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 44% and peaks near 56% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
136
237
338
439
540
640
741
841
941
1042
1142
1242
1342
1442
1542
1642
1742
1842
1942
2043
2144
2245
2347
2448
2549
2650
2752
2853
2954
3056

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
166331
265341
364351
463361
562371
661381
760391
860391
959401
1058411
1158411
1258411
1357421
1458420
1558420
1659410
1758411
1858411
1958411
2058411
2158411
2257421
2356431
2456431
2555441
2654442
2753452
2853452
2952462
3050473

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:04 AM to 5:51 AM, and sunset from 6:00 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:046:00
211.96:046:00
311.96:036:00
411.96:036:00
512.06:025:59
612.06:025:59
712.06:015:59
812.06:015:59
912.06:005:58
1012.06:005:58
1112.06:005:58
1212.05:595:57
1312.05:595:57
1412.05:585:57
1512.05:585:57
1612.05:575:56
1712.05:575:56
1812.05:565:56
1912.05:565:55
2012.05:555:55
2112.05:555:55
2212.05:555:55
2312.05:545:54
2412.05:545:54
2512.05:535:54
2612.05:535:53
2712.05:525:53
2812.05:525:53
2912.05:515:53
3012.05:515:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.46 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 5.46 kWh/m² in September across the year — September's 5.46 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Is September a good time to visit Bubanza?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.0
Sightseeing
4th-best month of the year
5.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Bubanza for sightseeing.

What to pack for Bubanza in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

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.

light clothesrain gearsun protection

UV index in Bubanza in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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

Air quality in Bubanza in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual 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
Location & terrain

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
September weather 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).