Biharamulo weather in September

In September, Biharamulo sees average daytime highs of 28°C and overnight lows near 18°C, with 45 mm of rain across 9.3 wet days and about 12 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 21% of the time in September, and the air most often feels comfortable.

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 Biharamulo's 3rd-clearest and 4th-windiest month. For the whole year in context, see Biharamulo's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
18°
12th coldest
Rainfall
45 mm
9.3 wet days
Daylight
12 hours
6:50 AM – 6:49 PM
Cloud cover
63%
3rd clearest
Wind
8 km/h
4th windiest
Solar energy
5.95 kWh/m²
Travel score
5.8
out of 10

Biharamulo is town in Kagera Region, Tanzania.

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 28°C through the month.

A typical September day in Biharamulo reaches about 28°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12817
22817
32817
42817
52818
62818
72818
82818
92818
102818
112818
122818
132818
142818
152818
162818
172818
182818
192818
202818
212818
222818
232818
242818
252818
262818
272818
282818
292818
302818

Biharamulo weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 17°10918.812.15.1
Feb27° / 17°7514.512.15.4
Mar27° / 18°11618.4125.1
Apr26° / 18°1472111.94.7
May27° / 18°579.711.96.5
Jun27° / 17°81.411.97.5
Jul28° / 17°40.711.97.4
Aug28° / 17°224.211.96.4
Sep28° / 18°459.3125.8
Oct27° / 18°10417.312.15.2
Nov26° / 17°1642412.14.3
Dec26° / 17°14321.912.14.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44555
54555
64456
74555
84555
94555
104555
114555
124555
134555
144456
154555
164456
174555
184456
194357
204357
214258
224159
234159
244060
253961
263961
273961
283961
293862
303664

Chance of precipitation in September

Any precipitation

Biharamulo gets around 45 mm of rain over 9.3 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 32% and peaks near 43% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
124
225
325
426
526
627
727
827
928
1028
1129
1229
1329
1430
1530
1630
1731
1831
1932
2033
2134
2235
2336
2437
2538
2639
2740
2841
2942
3043

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 37% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
1422929
2403030
3383130
4363331
5343431
6333632
7313732
8303833
9283933
10273933
11264034
12254134
13254134
14244134
15244135
16244135
17244135
18244136
19234037
20234038
21223939
22223840
23213841
24203743
25193744
26183646
27173647
28163549
29153550
30143452

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
27calm
37calm
47calm
57calm
67calm
77calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:56 AM to 6:43 AM, and sunset from 6:53 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:566:53
212.06:566:53
312.06:556:52
412.06:556:52
512.06:546:52
612.06:546:52
712.06:536:51
812.06:536:51
912.06:536:51
1012.06:526:50
1112.06:526:50
1212.06:516:50
1312.06:516:50
1412.06:506:49
1512.06:506:49
1612.06:506:49
1712.06:496:48
1812.06:496:48
1912.06:486:48
2012.06:486:47
2112.06:476:47
2212.06:476:47
2312.06:466:47
2412.06:466:46
2512.06:466:46
2612.06:456:46
2712.06:456:45
2812.06:446:45
2912.06:446:45
3012.06:436:45

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.95 kWh/m².

For context, solar energy here swings from a low near 5.19 kWh/m² to a high of 5.97 kWh/m² in February across the year — September's 5.95 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
146.0Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.0Intense
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
296.0Bright
305.9Bright
Planning a trip in September

Hazard calendar for Biharamulo

In seasonPeak

None of Biharamulo's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Biharamulo'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

Is September a good time to visit Biharamulo?

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

5.8
Sightseeing
5th-best month of the year
6.8
Beach & pool
4th-best month of the year

September is a reasonable time to visit Biharamulo for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Biharamulo in September

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

In September, Biharamulo sees daytime highs around 28°C and nights near 18°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Biharamulo 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 Biharamulo peaks around March 14 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 14UV 16Jun 19UV 10
UV index (midday)Level
Jan12Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Biharamulo 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 Biharamulo is worst in July — around 22 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (April, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1422 µg/m³Apr 2113 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb20Moderate
Mar16Moderate
Apr13Moderate
May13Moderate
Jun21Moderate
Jul22Moderate
Aug20Moderate
Sep17Moderate
Oct14Moderate
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Biharamulo?

Biharamulo sits at 2.6°S, 31.3°E, 1,479 m above sea level, in Tanzania. The nearest listed city is Chato, 51 km away.

NgaraRulengeUyovuMhalambaBuseresereKatoroKakonko

Topography around Biharamulo

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

Within 3 km, the terrain around Biharamulo has only modest variations in elevation — a maximum elevation change of 192 m around an average of 1,461 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 473 m; within 80 km, large variations in elevation — a maximum elevation change of 775 m.

The land around Biharamulo is covered by shrubs (31%) and grassland (27%) within 3 km, shrubs (36%), grassland (23%) and cropland (22%) within 16 km, and grassland (29%) and cropland (28%) within 80 km.

3 km
192 m
16 km
473 m
80 km
775 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Chato 51 km · Ngara 74 km · Rulenge 76 km · Uyovu 76 km · Mhalamba 78 km · Buseresere 79 km · Katoro 80 km · Kakonko 82 km

Tanzania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$1,319
2025
Happiness
3.9 / 10
World Happiness, 2025
Safe drinking water
31%
of population, 2024
Homicide rate
3.7
per 100k, 2020
Road deaths
31.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 479
Religion
Christian 63%Muslim 34%folk religion 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 Biharamulo (-2.6319°, 31.3089°, elevation 1,479 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).