Shanwa weather in September

In September, Shanwa sees average daytime highs of 30°C and overnight lows near 19°C, with 11 mm of rain across 2.3 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 30°C through the month. The sky is clear or mostly clear about 33% 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 Shanwa's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Shanwa's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
11 mm
2.3 wet days
Daylight
12 hours
6:40 AM – 6:39 PM
Cloud cover
54%
3rd clearest
Wind
14 km/h
3rd windiest
Solar energy
6.62 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Shanwa reaches about 30°C in the afternoon and slips back to 19°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°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)
13018
23018
33018
43018
53018
63018
73018
83018
93018
103018
113018
123019
133019
143019
153019
163119
173119
183119
193119
203119
213119
223119
233119
243119
253119
263119
273119
283119
293119
303119

Shanwa 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° / 18°14618.612.25.1
Feb28° / 18°11014.612.14.9
Mar28° / 19°14017.1124.9
Apr28° / 18°11414.211.95.5
May28° / 19°274.411.96.6
Jun28° / 18°5111.86.9
Jul28° / 17°30.311.87.2
Aug29° / 18°60.911.96.6
Sep30° / 19°112.3125.6
Oct31° / 19°406.412.14.9
Nov29° / 19°12113.912.14.8
Dec28° / 18°16919.112.24.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 42%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
26040
35941
45941
55941
65941
75941
85941
95941
105941
115941
125941
135941
145941
156040
166040
175941
186040
195941
205941
215842
225743
235743
245644
255545
265446
275347
285347
295248
305149

Chance of precipitation in September

Any precipitation

Shanwa gets around 11 mm of rain over 2.3 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 8% and peaks near 13% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
15
26
36
46
56
66
76
86
96
106
116
126
136
146
156
166
176
187
197
207
218
229
239
2410
2511
2611
2712
2812
2912
3013

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
18785
28785
38785
48695
58695
68695
78695
88695
98695
108695
118695
128695
1385105
1485105
1585105
1684115
1784115
1884115
1984115
2082126
2182126
2281136
2380137
2479147
2579147
2677158
2777158
2876168
2976168
3074179

Wind in September

Winds average 14 km/h in September.

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
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light 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
2513light breeze
2613light breeze
2713light 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 6:46 AM to 6:34 AM, and sunset from 6:43 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:466:43
211.96:466:43
311.96:466:42
411.96:456:42
512.06:456:42
612.06:446:42
712.06:446:41
812.06:436:41
912.06:436:41
1012.06:436:40
1112.06:426:40
1212.06:426:40
1312.06:416:40
1412.06:416:39
1512.06:406:39
1612.06:406:39
1712.06:396:38
1812.06:396:38
1912.06:386:38
2012.06:386:38
2112.06:376:37
2212.06:376:37
2312.06:376:37
2412.06:366:37
2512.06:366:36
2612.06:356:36
2712.06:356:36
2812.06:346:35
2912.06:346:35
3012.06:346:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 5.66 kWh/m² to a high of 6.62 kWh/m² in September across the year — September's 6.62 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.7Intense
306.7Intense
Planning a trip in September

Hazard calendar for Shanwa

In seasonPeak

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

Shanwa'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 Shanwa?

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

5.6
Sightseeing
5th-best month of the year
7.9
Beach & pool
4th-best month of the year

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

What to pack for Shanwa in September

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

In September, Shanwa sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Shanwa 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 Shanwa peaks around March 14 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 14UV 16Jun 18UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Shanwa 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 Shanwa is worst in January — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (May, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodModerateJan 2018 µg/m³May 1610 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar15Moderate
Apr12Good
May10Good
Jun13Moderate
Jul13Moderate
Aug12Moderate
Sep12Good
Oct11Good
Nov12Good
Dec14Moderate
Location & terrain

Where is Shanwa?

Shanwa sits at 3.2°S, 33.8°E, 1,342 m above sea level, in Tanzania. The nearest listed city is Nyalikungu, 3.0 km away.

Topography around Shanwa

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

Within 3 km, the terrain around Shanwa has only modest variations in elevation — a maximum elevation change of 90 m around an average of 1,329 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 161 m; within 80 km, significant variations in elevation — a maximum elevation change of 506 m.

The land around Shanwa is covered by cropland (79%) within 3 km, cropland (80%) within 16 km, and cropland (79%) within 80 km.

3 km
90 m
16 km
161 m
80 km
506 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Nyalikungu 3.0 km · Malampaka 26 km · Somanda 30 km · Lalago 38 km · Kisesa 44 km · Mwadui 46 km · Bariadi 47 km · Songwa 48 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 Shanwa (-3.1667°, 33.7667°, elevation 1,342 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).