Hedaru weather in September

In September, Hedaru sees average daytime highs of 27°C and overnight lows near 16°C, with 14 mm of rain across 3.2 wet days and about 12 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 18% of the time in September, and the air most often feels comfortable.

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 Hedaru's 6th-clearest and 5th-windiest month. For the whole year in context, see Hedaru's year-round climate.

Daytime high
27°
8th warmest
Overnight low
16°
4th coldest
Rainfall
14 mm
3.2 wet days
Daylight
12 hours
6:23 AM – 6:22 PM
Cloud cover
59%
6th clearest
Wind
7 km/h
5th windiest
Solar energy
5.54 kWh/m²
Travel score
7.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Hedaru reaches about 27°C in the afternoon and slips back to 16°C overnight — a 11°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 1°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12615
22616
32616
42616
52616
62616
72616
82716
92716
102716
112716
122716
132716
142716
152716
162716
172716
182716
192716
202716
212716
222716
232716
242816
252816
262816
272817
282817
292817
302817

Hedaru weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°549.612.25.3
Feb30° / 20°488.212.14.9
Mar30° / 20°10216.3124.4
Apr27° / 20°18222.511.94.4
May25° / 18°12415.211.85.9
Jun25° / 16°17411.77.5
Jul24° / 15°112.511.87.8
Aug25° / 15°142.911.97.6
Sep27° / 16°143.2127.4
Oct28° / 18°638.712.16.3
Nov28° / 19°9014.312.25.2
Dec29° / 20°7914.912.35.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13664
23763
33664
43763
53763
63763
73862
83961
93961
104159
114159
124159
134456
144456
154456
164555
174654
184753
194852
204852
214852
225050
235050
245050
255050
265050
275050
285050
294951
304951

Chance of precipitation in September

Any precipitation

Hedaru gets around 14 mm of rain over 3.2 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 11% and peaks near 16% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
18
28
38
48
58
68
78
88
99
109
119
129
1310
1410
1510
1611
1711
1811
1911
2012
2112
2212
2312
2413
2513
2613
2714
2815
2915
3016

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1779140
2779140
3679150
4679150
5678160
6677170
7578170
8577180
9577180
10576190
11576190
12576190
13674200
14674200
15673210
16673210
17672220
18671221
19670231
20669241
21668251
22667261
23666271
24664282
25662302
26661312
27659332
28656353
29654373
30652393

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 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
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:31 AM to 6:17 AM, and sunset from 6:26 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:316:26
211.96:306:25
311.96:306:25
411.96:296:25
511.96:296:25
611.96:286:24
711.96:286:24
811.96:276:24
911.96:276:24
1012.06:266:23
1112.06:266:23
1212.06:256:23
1312.06:256:23
1412.06:246:22
1512.06:246:22
1612.06:236:22
1712.06:236:22
1812.06:226:22
1912.06:226:21
2012.06:216:21
2112.06:216:21
2212.06:206:21
2312.06:206:20
2412.06:196:20
2512.06:196:20
2612.06:196:20
2712.06:186:19
2812.06:186:19
2912.06:176:19
3012.06:176:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.54 kWh/m².

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 6.55 kWh/m² in February across the year — September's 5.54 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Hedaru

In seasonPeak

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

Hedaru's rainy season runs March–May, 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 Hedaru?

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

7.4
Sightseeing
4th-best month of the year
7.5
Beach & pool
1st-best month of the year

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

What to pack for Hedaru in September

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

In September, Hedaru sees daytime highs around 27°C and nights near 16°C. Worth packing: light clothes and sun protection. About 3 days see rain.

light clothessun protection

UV index in Hedaru 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 Hedaru peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jun 19UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Hedaru 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 Hedaru is worst in July — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1616 µg/m³Oct 219 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar11Good
Apr10Good
May11Good
Jun14Moderate
Jul16Moderate
Aug13Moderate
Sep11Good
Oct9Good
Nov9Good
Dec13Moderate
Location & terrain

Where is Hedaru?

Hedaru sits at 4.5°S, 37.9°E, 640 m above sea level, in Tanzania. The nearest listed city is Makuyuni, 34 km away.

LembeniUsangiKorogwe

Topography around Hedaru

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

Within 3 km, the terrain around Hedaru has significant variations in elevation — a maximum elevation change of 416 m around an average of 662 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,658 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,131 m.

The land around Hedaru is covered by cropland (37%) and grassland (32%) within 3 km, shrubs (61%) within 16 km, and shrubs (68%) within 80 km.

3 km
416 m
16 km
1,658 m
80 km
2,131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Makuyuni 34 km · Mazinde 48 km · Matui 51 km · Same 52 km · Lushoto 53 km · Lembeni 86 km · Usangi 93 km · Korogwe 97 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 Hedaru (-4.5°, 37.9°, elevation 640 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).