Nsanje weather in September

In September, Nsanje sees average daytime highs of 33°C and overnight lows near 19°C, with 8 mm of rain across 1.6 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 34°C by the end. The sky is clear or mostly clear about 72% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Nsanje's 1st-clearest and 2nd-windiest month. For the whole year in context, see Nsanje's year-round climate.

Daytime high
33°
4th warmest
Overnight low
19°
5th coldest
Rainfall
8 mm
1.6 wet days
Daylight
11 h 54 min
5:36 AM – 5:30 PM
Cloud cover
26%
1st clearest
Wind
10 km/h
2nd windiest
Solar energy
6.02 kWh/m²
Travel score
4.8
out of 10

Nsanje is place in Southern Region, Malawi.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 31°C in the first days to 34°C by the end.

A typical September day in Nsanje reaches about 33°C in the afternoon and slips back to 19°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 37°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13118
23118
33118
43118
53118
63118
73218
83219
93219
103219
113219
123219
133219
143219
153319
163319
173320
183320
193320
203320
213320
223320
233320
243420
253420
263420
273420
283421
293421
303421

How September really feels in Nsanje

Once humidity and wind are folded in, September averages 20 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
20
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.

Nsanje weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°2352112.93.1
Feb31° / 23°15516.712.63.4
Mar31° / 23°11115.412.14.0
Apr30° / 21°368.211.65.4
May29° / 18°123.411.26.9
Jun27° / 16°92.5118.0
Jul27° / 16°113.711.17.9
Aug29° / 17°62.111.46.8
Sep33° / 19°81.611.94.8
Oct34° / 22°183.412.43.4
Nov35° / 23°678.512.82.6
Dec33° / 23°16017.4132.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 72% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 14%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18515
28515
38515
48515
58713
68713
78614
88614
98614
108614
118614
128713
138713
148713
158713
168713
178713
188614
198614
208614
218614
228614
238614
248515
258515
268416
278416
288317
298317
308317

Chance of precipitation in September

Any precipitation

Nsanje gets around 8 mm of rain over 1.6 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 5% and peaks near 7% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
14
23
33
43
53
63
74
84
94
104
115
125
135
145
156
166
176
186
196
206
216
227
237
247
257
267
277
287
297
307

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 47% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
123542120
223542120
323542120
423532220
523532220
623522320
723522320
822522420
922522420
1022522420
1121512530
1221512530
1320512630
1419512730
1519492840
1618492940
1717483050
1816483151
1915473251
2014463361
2114453461
2213443571
2313433671
2412423781
2512403891
2611404091
27113840101
28103841100
29103742110
30103642110

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
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 42 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 24 minutes over September. Sunrise moves from 5:49 AM to 5:24 AM, and sunset from 5:29 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:495:29
211.75:485:29
311.75:475:29
411.75:465:29
511.75:455:29
611.75:455:29
711.85:445:29
811.85:435:30
911.85:425:30
1011.85:415:30
1111.85:405:30
1211.85:405:30
1311.95:395:30
1411.95:385:30
1511.95:375:30
1611.95:365:30
1711.95:355:31
1811.95:345:31
1912.05:345:31
2012.05:335:31
2112.05:325:31
2212.05:315:31
2312.05:305:31
2412.05:295:31
2512.15:285:32
2612.15:285:32
2712.15:275:32
2812.15:265:32
2912.15:255:32
3012.15:245:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.02 kWh/m².

For context, solar energy here swings from a low near 4 kWh/m² to a high of 6.65 kWh/m² in November across the year — September's 6.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.7Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Intense
156.0Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Nsanje

In seasonPeak

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

Nsanje'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 Nsanje?

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

4.8
Sightseeing
6th-best month of the year
8.1
Beach & pool
3rd-best month of the year

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

What to pack for Nsanje in September

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

In September, Nsanje sees daytime highs around 33°C and nights near 19°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Nsanje in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nsanje peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 17UV 14Jun 21UV 7
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7Very high
Jul7Very high
Aug8Very high
Sep10Very high
Oct12Extreme
Nov12Extreme
Dec14Extreme

Air quality in Nsanje 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 Nsanje is worst in September — around 58 µg/m³ PM2.5 (unhealthy), about 8.2× the cleanest month (December, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodSep 1356 µg/m³Dec 227 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar8Good
Apr8Good
May11Good
Jun14Moderate
Jul25Moderate
Aug45Poor
Sep58Unhealthy
Oct28Moderate
Nov12Good
Dec7Good
Location & terrain

Where is Nsanje?

Nsanje sits at 16.9°S, 35.3°E, 55 m above sea level, in Malawi. The nearest listed city is Morrumbala, 57 km away.

MorrumbalaMulanjeMilangeBlantyreMwanzaZomba

Topography around Nsanje

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

Within 3 km, the terrain around Nsanje has only modest variations in elevation — a maximum elevation change of 66 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 919 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,979 m.

The land around Nsanje is covered by cropland (29%), trees (23%) and grassland (21%) within 3 km, shrubs (32%), trees (28%) and grassland (27%) within 16 km, and shrubs (30%), trees (29%) and grassland (24%) within 80 km.

3 km
66 m
16 km
919 m
80 km
1,979 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Morrumbala 57 km · Caia 100 km · Mulanje 102 km · Milange 106 km · Blantyre 129 km · Mwanza 166 km · Marromeu 169 km · Zomba 171 km

Malawi travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type G
230 V · 50 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$672
2025
Happiness
3.3 / 10
World Happiness, 2025
Safe drinking water
18%
of population, 2024
Homicide rate
1.8
per 100k, 2012
Road deaths
33.4
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 465
Religion
Protestant 34%other Christian 27%Roman Catholic 17%Muslim 14%

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 Nsanje (-16.92°, 35.262°, elevation 55 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).