Mahanje weather in September

In September, Mahanje sees average daytime highs of 27°C and overnight lows near 16°C, with 3 mm of rain across 0.8 wet days and about 11.9 hours of daylight. It is the 6th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 43% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Mahanje's 1st-clearest and 3rd-windiest month. For the whole year in context, see Mahanje's year-round climate.

Daytime high
27°
6th warmest
Overnight low
16°
4th coldest
Rainfall
3 mm
0.8 wet days
Daylight
11 h 54 min
6:35 AM – 6:31 PM
Cloud cover
42%
1st clearest
Wind
8 km/h
3rd windiest
Solar energy
5.88 kWh/m²
Travel score
7.9
out of 10
Density
19/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical September day in Mahanje reaches about 27°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12614
22615
32615
42615
52715
62715
72715
82715
92715
102715
112715
122715
132715
142715
152715
162816
172816
182816
192816
202816
212816
222816
232816
242816
252816
262816
272816
282817
292817
302917

Mahanje weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 19°28725.612.53.9
Feb28° / 19°24223.112.33.9
Mar27° / 19°22527.412.13.9
Apr26° / 18°13821.311.84.9
May25° / 16°296.811.67.4
Jun24° / 13°41.211.48.5
Jul24° / 13°4111.58.5
Aug25° / 14°41.111.78.4
Sep27° / 16°30.811.97.9
Oct30° / 18°14312.26.3
Nov31° / 20°487.212.55.1
Dec29° / 20°18218.912.64.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 33% of September, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17426
27426
37426
47525
57525
67525
77525
87525
97525
107525
117525
127525
137525
147624
157624
167624
177624
187723
197723
207723
217723
227723
237723
247723
257723
267723
277624
287624
297624
307624

Chance of precipitation in September

Any precipitation

Mahanje gets around 3 mm of rain over 0.8 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
13
23
33
43
53
63
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
223
233
243
253
264
274
284
294
305

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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
176231
276231
375241
475241
574251
673261
773261
872271
971281
1070291
1169301
1268311
1367321
1466331
1566331
1665341
1765341
1865341
1964351
2064351
2163352
2263352
2362362
2461363
2561363
2660364
2759374
2858375
2957385
3057385

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:44 AM to 6:26 AM, and sunset from 6:33 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:446:33
211.86:446:33
311.86:436:32
411.86:426:32
511.86:426:32
611.96:416:32
711.96:406:32
811.96:406:32
911.96:396:32
1011.96:396:32
1111.96:386:32
1211.96:376:32
1311.96:376:32
1411.96:366:32
1511.96:356:31
1611.96:356:31
1712.06:346:31
1812.06:336:31
1912.06:336:31
2012.06:326:31
2112.06:316:31
2212.06:316:31
2312.06:306:31
2412.06:296:31
2512.06:296:31
2612.06:286:31
2712.06:286:30
2812.16:276:30
2912.16:266:30
3012.16:266:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 6.49 kWh/m² in November across the year — September's 5.88 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
186.0Bright
196.0Intense
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Mahanje

In seasonPeak

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

Mahanje's monsoon runs December–April, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Mahanje?

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

7.9
Sightseeing
4th-best month of the year
8.3
Beach & pool
1st-best month of the year

September is one of the better times to visit Mahanje for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mahanje in September

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

In September, Mahanje sees daytime highs around 27°C and nights near 16°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Mahanje in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mahanje 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 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 22UV 16Jun 17UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Mahanje 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 Mahanje is worst in October — around 28 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (April, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 2128 µg/m³Apr 219 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr9Good
May9Good
Jun9Good
Jul14Moderate
Aug18Moderate
Sep23Moderate
Oct28Moderate
Nov27Moderate
Dec11Good
Location & terrain

Where is Mahanje?

Mahanje sits at 9.9°S, 35.3°E, 991 m above sea level, in Tanzania. The nearest listed city is Maposeni, 73 km away.

MaposeniNjombeSongeaMlangaliKigonseraMatiriMbingaMtwango

Topography around Mahanje

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

Within 3 km, the terrain around Mahanje has significant variations in elevation — a maximum elevation change of 283 m around an average of 985 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 882 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,125 m.

The land around Mahanje is covered by trees (65%) within 3 km, trees (53%) and shrubs (28%) within 16 km, and trees (56%) and shrubs (24%) within 80 km.

3 km
283 m
16 km
882 m
80 km
2,125 m
treesshrubsgrasslandcropland
September weather nearby: Maposeni 73 km · Njombe 89 km · Songea 90 km · Mlangali 91 km · Kigonsera 101 km · Matiri 102 km · Mbinga 116 km · Mtwango 118 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 Mahanje (-9.9333°, 35.3333°, elevation 991 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).