Tumbi weather in September

In September, Tumbi sees average daytime highs of 31°C and overnight lows near 20°C, with 2 mm of rain across 0.4 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 31°C through the month. The sky is clear or mostly clear about 51% 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 Tumbi's 2nd-clearest and 1st-windiest month. For the whole year in context, see Tumbi's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
20°
10th coldest
Rainfall
2 mm
0.4 wet days
Daylight
12 hours
6:44 AM – 6:43 PM
Cloud cover
42%
2nd clearest
Wind
14 km/h
1st windiest
Solar energy
6.9 kWh/m²
Travel score
5.5
out of 10

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 Tumbi reaches about 31°C in the afternoon and slips back to 20°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13119
23119
33119
43119
53119
63119
73119
83119
93120
103120
113120
123120
133120
143120
153120
163120
173120
183120
193220
203220
213220
223220
233220
243220
253220
263220
273220
283220
293220
303220

Tumbi 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
Jan28° / 19°15220.912.34.7
Feb28° / 19°11316.412.24.8
Mar28° / 19°12917.1125.0
Apr28° / 19°8012.211.95.8
May29° / 19°142.911.86.7
Jun29° / 18°00.111.77.0
Jul29° / 17°0011.77.2
Aug30° / 18°10.211.86.4
Sep31° / 20°20.4125.5
Oct32° / 21°183.112.14.8
Nov30° / 20°9411.612.24.7
Dec28° / 19°15519.712.34.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 26%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17624
27624
37525
47525
57525
67426
77525
87525
97426
107525
117525
127525
137525
147525
157525
167525
177525
187624
197525
207525
217426
227426
237327
247327
257228
267228
277129
287129
297030
306931

Chance of precipitation in September

Any precipitation

Tumbi gets around 2 mm of rain over 0.4 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 2% and peaks near 4% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
222
232
242
252
263
273
283
293
304

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19721
29721
39721
49721
59721
69721
79721
89721
99721
109721
119721
129721
139721
149820
159820
169820
179820
189721
199631
209631
219631
229541
239541
249451
259352
269262
279172
289172
299082
309082

Wind in September

Winds average 14 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:52 AM to 6:37 AM, and sunset from 6:46 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:526:46
211.96:516:46
311.96:516:45
411.96:506:45
511.96:506:45
611.96:496:45
711.96:496:45
811.96:486:44
911.96:486:44
1011.96:476:44
1111.96:476:44
1212.06:466:43
1312.06:466:43
1412.06:456:43
1512.06:456:43
1612.06:446:43
1712.06:446:42
1812.06:436:42
1912.06:436:42
2012.06:426:42
2112.06:426:41
2212.06:416:41
2312.06:416:41
2412.06:406:41
2512.06:406:41
2612.06:396:40
2712.06:396:40
2812.06:386:40
2912.06:386:40
3012.06:376:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.9 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.55 kWh/m² to a high of 6.9 kWh/m² in September across the year — September's 6.9 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.8Intense
96.8Intense
106.8Intense
116.8Intense
126.8Intense
136.9Intense
146.9Intense
156.9Intense
166.9Intense
176.9Intense
187.0Intense
197.0Intense
207.0Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in September

Hazard calendar for Tumbi

In seasonPeak

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

Tumbi'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 Tumbi?

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

5.5
Sightseeing
6th-best month of the year
8.3
Beach & pool
4th-best month of the year

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

What to pack for Tumbi in September

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

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

light clothessun protection

UV index in Tumbi 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 Tumbi peaks around February 22 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 16Jun 17UV 10
UV index (midday)Level
Jan13Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May11Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Tumbi?

Tumbi sits at 5.1°S, 32.7°E, 1,168 m above sea level, in Tanzania. The nearest listed city is Tabora, 12 km away.

UramboNzegaIsakaKahamaTinde

Topography around Tumbi

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

Within 3 km, the terrain around Tumbi has only modest variations in elevation — a maximum elevation change of 134 m around an average of 1,188 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 230 m; within 80 km, significant variations in elevation — a maximum elevation change of 335 m.

The land around Tumbi is covered by shrubs (46%) and cropland (36%) within 3 km, shrubs (44%) and cropland (30%) within 16 km, and cropland (42%), shrubs (27%) and trees (26%) within 80 km.

3 km
134 m
16 km
230 m
80 km
335 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Tabora 12 km · Mabama 23 km · Sikonge 63 km · Urambo 76 km · Nzega 107 km · Isaka 132 km · Kahama 138 km · Tinde 141 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 Tumbi (-5.0667°, 32.7333°, elevation 1,168 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).