Mwandege weather in September

In September, Mwandege sees average daytime highs of 29°C and overnight lows near 21°C, with 20 mm of rain across 6.3 wet days and about 12 hours of daylight. It is the 8th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Mwandege's 1st-clearest and 7th-windiest month. For the whole year in context, see Mwandege's year-round climate.

Daytime high
29°
8th warmest
Overnight low
21°
3rd coldest
Rainfall
20 mm
6.3 wet days
Daylight
12 hours
6:18 AM – 6:16 PM
Cloud cover
39%
1st clearest
Wind
11 km/h
7th windiest
Solar energy
6.17 kWh/m²
Travel score
6.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Mwandege reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12921
22921
32921
42921
52921
62921
72921
82921
92921
102921
112921
122921
132921
142921
152921
162921
172921
182921
192921
202922
212922
222922
232922
242922
252922
262922
272922
282922
293022
303022

How September really feels in Mwandege

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mwandege weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 25°5410.112.44.3
Feb32° / 25°599.412.24.0
Mar31° / 25°15822.6123.2
Apr29° / 24°20025.811.93.3
May29° / 23°13019.511.74.6
Jun28° / 22°329.511.66.4
Jul28° / 21°206.411.67.1
Aug28° / 21°21711.86.8
Sep29° / 21°206.3126.2
Oct30° / 23°5411.312.25.1
Nov30° / 24°8917.112.34.1
Dec31° / 25°9117.612.43.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 13%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28515
38515
48614
58713
68713
78713
88713
98713
108812
118812
128812
138911
148911
158812
168812
178812
188911
198911
208911
218812
228812
238812
248812
258713
268713
278713
288614
298614
308515

Chance of precipitation in September

Any precipitation

Mwandege gets around 20 mm of rain over 6.3 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 22% and peaks near 30% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
120
219
319
419
519
619
719
819
919
1019
1119
1220
1320
1420
1520
1620
1720
1821
1921
2021
2122
2223
2323
2424
2525
2626
2727
2828
2929
3030

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
118811
218811
318811
418712
518712
618613
718613
818514
918514
1018514
1118514
1218415
1318415
1418415
1518316
1618316
1718217
1818118
1918019
2017920
2117821
2217722
2317623
2417425
2517227
2617128
2716930
2816732
2916534
3006436

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 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 12 minutes over September. Sunrise moves from 6:27 AM to 6:11 AM, and sunset from 6:19 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:276:19
211.96:266:18
311.96:266:18
411.96:256:18
511.96:246:18
611.96:246:18
711.96:236:18
811.96:236:17
911.96:226:17
1011.96:226:17
1111.96:216:17
1211.96:216:17
1311.96:206:17
1411.96:196:16
1512.06:196:16
1612.06:186:16
1712.06:186:16
1812.06:176:16
1912.06:176:16
2012.06:166:15
2112.06:156:15
2212.06:156:15
2312.06:146:15
2412.06:146:15
2512.06:136:15
2612.06:136:14
2712.06:126:14
2812.06:126:14
2912.06:116:14
3012.16:116:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.17 kWh/m².

For context, solar energy here swings from a low near 4.75 kWh/m² to a high of 6.51 kWh/m² in October across the year — September's 6.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
76.0Bright
86.0Bright
96.0Intense
106.0Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for Mwandege

In seasonPeak

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

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

Mwandege's rainy season runs March–May, when most of the year's rain falls.

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

Is September a good time to visit Mwandege?

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

6.2
Sightseeing
4th-best month of the year
7.9
Beach & pool
1st-best month of the year

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

What to pack for Mwandege in September

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

In September, Mwandege sees daytime highs around 29°C and nights near 21°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Mwandege in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in March at about 29°C and coldest in August near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug25Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec29Tropical

UV index in Mwandege 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 Mwandege peaks around March 15 at about 14 (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 highExtremeMar 15UV 14Jun 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Mwandege 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 Mwandege is worst in July — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1522 µg/m³Nov 1515 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb20Moderate
Mar18Moderate
Apr16Moderate
May18Moderate
Jun21Moderate
Jul22Moderate
Aug20Moderate
Sep19Moderate
Oct17Moderate
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Mwandege?

Mwandege sits at 7.0°S, 39.3°E, 22 m above sea level, in Tanzania. The nearest listed city is Vikindu, 4.0 km away.

Topography around Mwandege

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

Within 3 km, the terrain around Mwandege has only modest variations in elevation — a maximum elevation change of 77 m around an average of 62 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 440 m.

The land around Mwandege is covered by trees (59%) within 3 km, grassland (42%), trees (29%) and artificial surfaces (24%) within 16 km, and water (47%), grassland (26%) and trees (21%) within 80 km.

3 km
77 m
16 km
170 m
80 km
440 m
treesshrubsgrasslandartificial surfaceswatermangroves
September weather nearby: Vikindu 4.0 km · Dar es Salaam 17 km · Mkuranga 18 km · Magomeni 20 km · Kibaha 47 km · Mapinga 48 km · Sokoni 67 km · Mlandizi 69 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 Mwandege (-6.9756°, 39.2893°, elevation 22 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). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).