Ilula weather in September

In September, Ilula sees average daytime highs of 22°C and overnight lows near 11°C, with 4 mm of rain across 1.3 wet days and about 12 hours of daylight. It is the 7th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 22°C by the end. The sky is clear or mostly clear about 48% 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 h 06 min by month's end. Set against the rest of the year, September is Ilula's 1st-clearest and 1st-windiest month. For the whole year in context, see Ilula's year-round climate.

Daytime high
22°
7th warmest
Overnight low
11°
4th coldest
Rainfall
4 mm
1.3 wet days
Daylight
12 hours
6:31 AM – 6:29 PM
Cloud cover
41%
1st clearest
Wind
13 km/h
1st windiest
Solar energy
6.6 kWh/m²
Travel score
8.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 22°C by the end.

A typical September day in Ilula reaches about 22°C in the afternoon and slips back to 11°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 23°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12110
22110
32110
42110
52111
62111
72111
82111
92111
102111
112111
122211
132211
142211
152211
162211
172211
182211
192211
202211
212211
222211
232211
242211
252211
262211
272211
282211
292311
302312

Ilula weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 15°27426.212.44.2
Feb23° / 15°24622.112.34.4
Mar23° / 15°19024.412.14.4
Apr21° / 15°7318.611.85.1
May20° / 13°216.411.76.9
Jun19° / 10°41.311.67.5
Jul19° / 10°20.611.67.6
Aug20° / 10°40.911.77.8
Sep22° / 11°41.3128.2
Oct23° / 12°175.112.27.9
Nov24° / 14°6413.212.46.5
Dec24° / 15°18722.812.44.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 32% of September, with mostly cloudy or overcast conditions the remaining 20%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17327
27426
37525
47525
57624
67624
77723
87723
97921
107921
118020
128119
138119
148119
158218
168218
178317
188317
198218
208218
218218
228218
238218
248218
258119
268119
278119
288020
298020
307921

Chance of precipitation in September

Any precipitation

Ilula gets around 4 mm of rain over 1.3 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 5% and peaks near 11% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
84
94
103
113
123
133
143
153
163
173
184
194
204
214
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 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1982
2982
3982
4982
5973
6973
7973
8973
9973
10973
11973
12973
13964
14964
15964
16964
17964
18964
19955
20955
21946
22946
23937
24928
25919
269010
278812
288713
298614
308515

Wind in September

Winds average 13 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light 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 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 6:40 AM to 6:23 AM, and sunset from 6:31 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:406:31
211.96:396:31
311.96:396:31
411.96:386:31
511.96:386:31
611.96:376:30
711.96:376:30
811.96:366:30
911.96:366:30
1011.96:356:30
1111.96:346:30
1211.96:346:30
1311.96:336:29
1411.96:336:29
1512.06:326:29
1612.06:316:29
1712.06:316:29
1812.06:306:29
1912.06:306:28
2012.06:296:28
2112.06:286:28
2212.06:286:28
2312.06:276:28
2412.06:276:28
2512.06:266:28
2612.06:266:27
2712.06:256:27
2812.06:246:27
2912.16:246:27
3012.16:236:27

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.6 kWh/m².

For context, solar energy here swings from a low near 5.02 kWh/m² to a high of 6.93 kWh/m² in October across the year — September's 6.6 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.2Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.6Intense
156.6Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.9Intense
296.9Intense
306.9Intense
Planning a trip in September

Hazard calendar for Ilula

In seasonPeak

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

Ilula's monsoon runs December–March, 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 Ilula?

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

8.2
Sightseeing
1st-best month of the year
5.5
Beach & pool
3rd-best month of the year

September is one of the better times to visit Ilula for general sightseeing.

What to pack for Ilula in September

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

In September, Ilula sees daytime highs around 22°C and nights near 11°C. Pack sun protection.

sun protection

UV index in Ilula 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 Ilula peaks around March 11 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 11UV 16Jun 18UV 10
UV index (midday)Level
Jan13Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Ilula 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 Ilula is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1920 µg/m³May 247 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr8Good
May7Good
Jun7Good
Jul10Good
Aug15Moderate
Sep21Moderate
Oct18Moderate
Nov13Moderate
Dec8Good
Location & terrain

Where is Ilula?

Ilula sits at 7.7°S, 36.0°E, 1,374 m above sea level, in Tanzania. The nearest listed city is Iringa, 38 km away.

IfakaraKidatuRuahaKidodiMafingaMikumi

Topography around Ilula

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

Within 3 km, the terrain around Ilula has significant variations in elevation — a maximum elevation change of 543 m around an average of 1,430 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,577 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,299 m.

The land around Ilula is covered by cropland (39%) and shrubs (31%) within 3 km, shrubs (34%), trees (26%) and cropland (22%) within 16 km, and trees (38%) and shrubs (34%) within 80 km.

3 km
543 m
16 km
1,577 m
80 km
2,299 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Iringa 38 km · Izazi 63 km · Ifakara 87 km · Kidatu 101 km · Ruaha 104 km · Kidodi 107 km · Mafinga 107 km · Mikumi 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 Ilula (-7.6766°, 36.0366°, elevation 1,374 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).