Nungwi weather in September

In September, Nungwi sees average daytime highs of 26°C and overnight lows near 24°C, with 27 mm of rain across 8 wet days and about 12 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 76% of the time in September, and the air most often feels oppressive.

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 Nungwi's 1st-clearest and 9th-windiest month. For the whole year in context, see Nungwi's year-round climate.

Daytime high
26°
11th warmest
Overnight low
24°
3rd coldest
Rainfall
27 mm
8 wet days
Daylight
12 hours
6:18 AM – 6:16 PM
Cloud cover
31%
1st clearest
Wind
16 km/h
9th windiest
Solar energy
5.84 kWh/m²
Travel score
7.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Nungwi reaches about 26°C in the afternoon and slips back to 24°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 26°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12524
22524
32624
42624
52624
62624
72624
82624
92624
102624
112624
122624
132624
142624
152624
162624
172624
182624
192624
202624
212624
222624
232624
242624
252624
262624
272624
282625
292625
302625

How September really feels in Nungwi

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.

Nungwi weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°348.412.36.9
Feb28° / 27°286.612.26.9
Mar28° / 26°13119.8124.8
Apr28° / 26°2782711.93.9
May27° / 25°23324.411.74.5
Jun26° / 25°6619.411.75.3
Jul26° / 24°4616.411.75.9
Aug25° / 24°3311.211.86.9
Sep26° / 24°278127.5
Oct26° / 25°6912.512.16.7
Nov27° / 25°8818.712.35.5
Dec28° / 26°8218.812.35.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18713
28911
38911
48911
58911
68911
79010
89010
99010
10919
11919
12919
13919
149010
159010
169010
179010
189010
199010
208911
218911
228911
238911
248911
258911
268911
278911
288812
298812
308812

Chance of precipitation in September

Any precipitation

Nungwi gets around 27 mm of rain over 8 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
329
429
529
628
728
828
927
1027
1127
1227
1326
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2626
2727
2827
2928
3029

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
16832
26733
36535
46436
56337
66139
76040
85842
95743
105545
115446
125347
135149
145050
154852
164753
174555
184456
194357
204159
214060
223961
233862
243763
253565
263466
273367
283169
293070
302872

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light 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 6:26 AM to 6:11 AM, and sunset from 6:19 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:266:19
211.96:256:19
311.96:256:19
411.96:246:19
511.96:246:18
611.96:236:18
711.96:236:18
811.96:226:18
911.96:226:18
1011.96:216:17
1111.96:216:17
1211.96:206:17
1312.06:206:17
1412.06:196:17
1512.06:196:16
1612.06:186:16
1712.06:186:16
1812.06:176:16
1912.06:166:16
2012.06:166:15
2112.06:156:15
2212.06:156:15
2312.06:146:15
2412.06:146:15
2512.06:136:14
2612.06:136:14
2712.06:126:14
2812.06:126:14
2912.06:116:14
3012.06:116:13

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.84 kWh/m².

For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 6.44 kWh/m² in February across the year — September's 5.84 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
216.0Bright
226.0Bright
236.0Bright
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for Nungwi

In seasonPeak

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

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

Nungwi's monsoon runs March–May, when most of the year's rain falls.

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

Is September a good time to visit Nungwi?

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

7.5
Sightseeing
1st-best month of the year
7.0
Beach & pool
3rd-best month of the year

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

What to pack for Nungwi in September

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

In September, Nungwi sees daytime highs around 26°C and nights near 24°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Nungwi 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 14 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
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Nungwi 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 Nungwi peaks around March 17 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 17UV 15Jun 18UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Extreme
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Nungwi 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 Nungwi is worst in January — around 18 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJan 2018 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb16Moderate
Mar13Moderate
Apr11Good
May14Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep13Moderate
Oct9Good
Nov8Good
Dec13Moderate
Location & terrain

Where is Nungwi?

Nungwi sits at 5.7°S, 39.3°E, 8 m above sea level, in Tanzania. The nearest listed city is Zanzibar, 50 km away.

Chake ChakeTangaSokoniMuhezaWeteBagamoyo

Topography around Nungwi

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

Within 3 km, the terrain around Nungwi has only modest variations in elevation — a maximum elevation change of 41 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 85 m; within 80 km, large variations in elevation — a maximum elevation change of 626 m.

The land around Nungwi is covered by water (69%) within 3 km, water (85%) within 16 km, and water (69%) within 80 km.

3 km
41 m
16 km
85 m
80 km
626 m
treesshrubsgrasslandartificial surfacesbare terrainwatermangroves
September weather nearby: Zanzibar 50 km · Mkoani 56 km · Chake Chake 74 km · Tanga 76 km · Sokoni 83 km · Muheza 84 km · Wete 89 km · Bagamoyo 91 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 Nungwi (-5.7265°, 39.2987°, elevation 8 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).