Mlangali weather in September

In September, Mlangali sees average daytime highs of 23°C and overnight lows near 14°C, with 7 mm of rain across 1.6 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 61% 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 Mlangali's 1st-clearest and 6th-windiest month. For the whole year in context, see Mlangali's year-round climate.

Daytime high
23°
4th warmest
Overnight low
14°
4th coldest
Rainfall
7 mm
1.6 wet days
Daylight
11 h 54 min
6:38 AM – 6:35 PM
Cloud cover
35%
1st clearest
Wind
7 km/h
6th windiest
Solar energy
6.55 kWh/m²
Travel score
8.6
out of 10

Mlangali is town and ward in Njombe, Tanzania.

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 22°C in the first days to 24°C by the end.

A typical September day in Mlangali reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°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°151015202530
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62214
72314
82314
92314
102314
112314
122314
132314
142314
152314
162314
172314
182414
192414
202415
212415
222415
232415
242415
252415
262415
272415
282415
292415
302415

Mlangali weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°43629.512.53.6
Feb23° / 17°39325.612.33.8
Mar23° / 17°47030.112.13.6
Apr22° / 16°25825.911.84.1
May21° / 15°6112.911.66.1
Jun20° / 12°154.911.47.0
Jul19° / 12°123.811.57.2
Aug21° / 13°82.711.77.9
Sep23° / 14°71.611.98.6
Oct25° / 16°448.312.27.4
Nov25° / 17°17118.512.45.5
Dec24° / 17°40528.112.64.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 19%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27921
37822
47822
57822
67822
77822
87822
97921
108020
118020
128020
138119
148119
158218
168218
178317
188416
198416
208416
218416
228416
238515
248416
258416
268416
278416
288317
298218
308218

Chance of precipitation in September

Any precipitation

Mlangali gets around 7 mm of rain over 1.6 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 6% and peaks near 11% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
46
56
66
76
86
96
106
116
125
135
145
155
165
175
185
195
205
215
225
236
246
257
268
278
289
2910
3011

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1973
2973
3973
4973
5964
6964
7964
8964
9964
10964
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21964
22955
23946
24946
25937
26928
279010
288911
298812
308713

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:47 AM to 6:29 AM, and sunset from 6:36 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:476:36
211.86:476:36
311.86:466:36
411.86:466:36
511.86:456:36
611.96:446:36
711.96:446:35
811.96:436:35
911.96:426:35
1011.96:426:35
1111.96:416:35
1211.96:406:35
1311.96:406:35
1411.96:396:35
1511.96:396:35
1611.96:386:35
1712.06:376:35
1812.06:376:34
1912.06:366:34
2012.06:356:34
2112.06:356:34
2212.06:346:34
2312.06:336:34
2412.06:336:34
2512.06:326:34
2612.06:316:34
2712.06:316:34
2812.16:306:34
2912.16:306:34
3012.16:296:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.55 kWh/m².

For context, solar energy here swings from a low near 4.7 kWh/m² to a high of 6.8 kWh/m² in October across the year — September's 6.55 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.3Intense
86.3Intense
96.3Intense
106.4Intense
116.4Intense
126.4Intense
136.5Intense
146.5Intense
156.5Intense
166.6Intense
176.6Intense
186.6Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Mlangali

In seasonPeak

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

Mlangali sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

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

Is September a good time to visit Mlangali?

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

8.6
Sightseeing
1st-best month of the year
6.8
Beach & pool
1st-best month of the year

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

What to pack for Mlangali in September

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

In September, Mlangali sees daytime highs around 23°C and nights near 14°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Mlangali 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 Mlangali peaks around February 19 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 17Jun 16UV 10
UV index (midday)Level
Jan16Extreme
Feb17Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct15Extreme
Nov13Extreme
Dec14Extreme

Air quality in Mlangali 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 Mlangali is worst in October — around 26 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1626 µg/m³May 167 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar9Good
Apr7Good
May7Good
Jun7Good
Jul11Good
Aug16Moderate
Sep21Moderate
Oct26Moderate
Nov20Moderate
Dec8Good
Location & terrain

Where is Mlangali?

Mlangali sits at 9.8°S, 34.5°E, 1,739 m above sea level, in Tanzania. The nearest listed city is Njombe, 56 km away.

IpindaKyelaMtwangoMahanjeIlembulaMakumbako

Topography around Mlangali

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

Within 3 km, the terrain around Mlangali has significant variations in elevation — a maximum elevation change of 484 m around an average of 1,830 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,049 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,371 m.

The land around Mlangali is covered by shrubs (34%), cropland (30%) and trees (25%) within 3 km, shrubs (45%) and trees (25%) within 16 km, and shrubs (26%), trees (25%) and water (24%) within 80 km.

3 km
484 m
16 km
2,049 m
80 km
2,371 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Njombe 56 km · Karonga 66 km · Ipinda 75 km · Kyela 76 km · Mtwango 91 km · Mahanje 91 km · Ilembula 98 km · Makumbako 109 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 Mlangali (-9.7833°, 34.5167°, elevation 1,739 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).