Ikwiriri weather in September

In September, Ikwiriri sees average daytime highs of 31°C and overnight lows near 21°C, with 12 mm of rain across 3.6 wet days and about 12 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels muggy.

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 Ikwiriri's 1st-clearest and 3rd-windiest month. For the whole year in context, see Ikwiriri's year-round climate.

Daytime high
31°
7th warmest
Overnight low
21°
3rd coldest
Rainfall
12 mm
3.6 wet days
Daylight
12 hours
6:20 AM – 6:17 PM
Cloud cover
38%
1st clearest
Wind
10 km/h
3rd windiest
Solar energy
5.68 kWh/m²
Travel score
5.6
out of 10

Ikwiriri is town in Pwani, Tanzania.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Ikwiriri reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°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 about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13020
23020
33020
43020
53020
63020
73020
83020
93120
103120
113121
123121
133121
143121
153121
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283121
293121
303121

How September really feels in Ikwiriri

Once humidity and wind are folded in, September averages 25 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
25
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ikwiriri weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°11617.612.43.0
Feb33° / 24°10814.712.33.1
Mar32° / 24°17524.912.12.8
Apr30° / 23°16923.211.83.4
May30° / 22°6210.611.65.1
Jun30° / 21°102.111.56.1
Jul30° / 21°51.211.66.3
Aug30° / 20°102.411.76.1
Sep31° / 21°123.6125.6
Oct32° / 22°327.912.24.6
Nov32° / 23°7415.512.43.5
Dec32° / 24°12820.912.52.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 28% of September, with mostly cloudy or overcast conditions the remaining 11%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28713
38713
48812
58812
68812
78812
88911
98911
108911
118911
128911
138911
148911
159010
169010
179010
189010
199010
209010
219010
229010
239010
249010
258911
268911
278911
288911
298713
308713

Chance of precipitation in September

Any precipitation

Ikwiriri gets around 12 mm of rain over 3.6 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 12% and peaks near 19% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
18
29
39
49
59
69
79
810
910
1010
1110
1210
1310
1410
1510
1610
1711
1811
1911
2012
2113
2213
2314
2415
2516
2617
2717
2818
2919
3019

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
110882
210882
310873
49883
59883
69883
79883
89883
98893
108884
118884
128884
138884
148884
158875
168875
177876
187876
197867
206877
216868
225869
235869
2448610
2548511
2648412
2738413
2838314
2938215
3028216

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 6:28 AM to 6:12 AM, and sunset from 6:19 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:286:19
211.96:286:19
311.96:276:19
411.96:276:19
511.96:266:19
611.96:266:19
711.96:256:18
811.96:246:18
911.96:246:18
1011.96:236:18
1111.96:236:18
1211.96:226:18
1311.96:226:18
1411.96:216:17
1511.96:206:17
1612.06:206:17
1712.06:196:17
1812.06:196:17
1912.06:186:17
2012.06:176:17
2112.06:176:16
2212.06:166:16
2312.06:166:16
2412.06:156:16
2512.06:146:16
2612.06:146:16
2712.06:136:16
2812.06:136:16
2912.16:126:15
3012.16:126:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.68 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.02 kWh/m² in October across the year — September's 5.68 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Ikwiriri

In seasonPeak

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

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

Ikwiriri's rainy season runs December–April, 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 Ikwiriri?

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

5.6
Sightseeing
4th-best month of the year
8.0
Beach & pool
4th-best month of the year

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

What to pack for Ikwiriri in September

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

In September, Ikwiriri sees daytime highs around 31°C and nights near 21°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Ikwiriri 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 48 km away) is warmest in March at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Tropical
Dec29Tropical

UV index in Ikwiriri 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 Ikwiriri peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 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 14UV 15Jun 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Air quality in Ikwiriri 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 Ikwiriri is worst in January — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJan 2016 µg/m³Nov 168 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb15Moderate
Mar10Good
Apr8Good
May8Good
Jun12Moderate
Jul14Moderate
Aug12Good
Sep12Good
Oct12Good
Nov7Good
Dec11Good
Location & terrain

Where is Ikwiriri?

Ikwiriri sits at 8.0°S, 39.0°E, 30 m above sea level, in Tanzania. The nearest listed city is Kibiti, 26 km away.

KilindoniMkurangaVikinduMwandegeKilwa MasokoDar es Salaam

Topography around Ikwiriri

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

Within 3 km, the terrain around Ikwiriri has only modest variations in elevation — a maximum elevation change of 22 m around an average of 21 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 88 m; within 80 km, large variations in elevation — a maximum elevation change of 730 m.

The land around Ikwiriri is covered by grassland (68%) within 3 km, grassland (64%) and trees (27%) within 16 km, and trees (48%), grassland (25%) and water (20%) within 80 km.

3 km
22 m
16 km
88 m
80 km
730 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Kibiti 26 km · Bungu 37 km · Kilindoni 76 km · Mkuranga 97 km · Vikindu 112 km · Mwandege 115 km · Kilwa Masoko 123 km · Dar es Salaam 130 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 Ikwiriri (-7.9562°, 38.9716°, elevation 30 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).