Masumbwe weather in September

In September, Masumbwe sees average daytime highs of 31°C and overnight lows near 20°C, with 14 mm of rain across 2.6 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 31°C through the month. The sky is clear or mostly clear about 35% 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 Masumbwe's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Masumbwe's year-round climate.

Daytime high
31°
1st warmest
Overnight low
20°
12th coldest
Rainfall
14 mm
2.6 wet days
Daylight
12 hours
6:46 AM – 6:45 PM
Cloud cover
52%
3rd clearest
Wind
10 km/h
3rd windiest
Solar energy
6.56 kWh/m²
Travel score
5.3
out of 10

Masumbwe is city in Geita, 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 31°C through the month.

A typical September day in Masumbwe reaches about 31°C in the afternoon and slips back to 20°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13019
23019
33019
43019
53119
63119
73119
83120
93120
103120
113120
123120
133120
143120
153120
163120
173120
183120
193120
203120
213120
223120
233120
243120
253120
263120
273120
283120
293120
303120

Masumbwe 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
Jan28° / 18°1171912.25.0
Feb28° / 18°8815.312.14.8
Mar28° / 19°13017.9124.8
Apr27° / 18°11716.611.95.2
May28° / 19°315.111.86.5
Jun29° / 18°20.411.86.7
Jul29° / 18°10.211.86.8
Aug30° / 19°71.211.96.1
Sep31° / 20°142.6125.3
Oct31° / 20°478.312.14.7
Nov28° / 19°13117.412.24.7
Dec27° / 18°13620.312.24.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 25% of September, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26139
36139
46238
56238
66238
76139
86238
96238
106238
116238
126337
136238
146238
156238
166238
176238
186139
196139
206040
215941
225941
235842
245743
255644
265644
275644
285644
295545
305446

Chance of precipitation in September

Any precipitation

Masumbwe gets around 14 mm of rain over 2.6 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 9% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
46
57
67
77
87
98
108
118
128
138
148
159
169
179
189
199
2010
2110
2210
2311
2411
2512
2612
2713
2813
2914
3014

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 73% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1791290
2781390
3771490
4771490
5771490
6771490
7761590
8761590
9761590
10771490
117614100
127614100
137614100
147614100
157614100
167613110
177613110
187613110
197513120
207413130
217413130
227313140
237213150
246914161
256814171
266615181
276615181
286416191
296217201
306118201

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm

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 6:53 AM to 6:40 AM, and sunset from 6:49 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:536:49
211.96:536:49
311.96:526:48
411.96:526:48
511.96:516:48
611.96:516:48
711.96:506:47
812.06:506:47
912.06:496:47
1012.06:496:47
1112.06:496:46
1212.06:486:46
1312.06:486:46
1412.06:476:46
1512.06:476:45
1612.06:466:45
1712.06:466:45
1812.06:456:44
1912.06:456:44
2012.06:446:44
2112.06:446:44
2212.06:436:43
2312.06:436:43
2412.06:426:43
2512.06:426:43
2612.06:426:42
2712.06:416:42
2812.06:416:42
2912.06:406:42
3012.06:406:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.56 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.41 kWh/m² to a high of 6.56 kWh/m² in September across the year — September's 6.56 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.4Intense
86.4Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in September

Hazard calendar for Masumbwe

In seasonPeak

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

Masumbwe's rainy season runs November–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 Masumbwe?

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

5.3
Sightseeing
5th-best month of the year
7.8
Beach & pool
4th-best month of the year

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

What to pack for Masumbwe in September

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

In September, Masumbwe sees daytime highs around 31°C and nights near 20°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Masumbwe 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 Masumbwe peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 16Jun 18UV 10
UV index (midday)Level
Jan12Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Masumbwe 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 Masumbwe is worst in January — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (May, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJan 2016 µg/m³May 198 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb15Moderate
Mar12Good
Apr10Good
May8Good
Jun9Good
Jul10Good
Aug11Good
Sep12Good
Oct10Good
Nov11Good
Dec12Moderate
Location & terrain

Where is Masumbwe?

Masumbwe sits at 3.6°S, 32.2°E, 1,191 m above sea level, in Tanzania. The nearest listed city is Ushirombo, 29 km away.

BuseresereKatoroDiobahikaUyovuMhangoGeita

Topography around Masumbwe

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

Within 3 km, the terrain around Masumbwe has only modest variations in elevation — a maximum elevation change of 61 m around an average of 1,184 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 389 m; within 80 km, significant variations in elevation — a maximum elevation change of 433 m.

The land around Masumbwe is covered by cropland (68%) within 3 km, cropland (60%) within 16 km, and cropland (56%) and trees (26%) within 80 km.

3 km
61 m
16 km
389 m
80 km
433 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Ushirombo 29 km · Kahama 51 km · Buseresere 73 km · Katoro 76 km · Diobahika 80 km · Uyovu 83 km · Mhango 84 km · Geita 85 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 Masumbwe (-3.6333°, 32.1833°, elevation 1,191 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).