Vatomandry weather in September

In September, Vatomandry sees average daytime highs of 24°C and overnight lows near 20°C, with 64 mm of rain across 14.6 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 48% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Vatomandry's 1st-clearest and 11th-windiest month. For the whole year in context, see Vatomandry's year-round climate.

Daytime high
24°
9th warmest
Overnight low
20°
3rd coldest
Rainfall
64 mm
14.6 wet days
Daylight
11 h 54 min
5:42 AM – 5:35 PM
Cloud cover
42%
1st clearest
Wind
9 km/h
11th windiest
Solar energy
5 kWh/m²
Travel score
6.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Vatomandry reaches about 24°C in the afternoon and slips back to 20°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12419
22420
32420
42420
52420
62420
72420
82420
92420
102420
112420
122420
132420
142420
152420
162420
172420
182520
192520
202520
212520
222520
232520
242520
252520
262520
272521
282521
292521
302521

How September really feels in Vatomandry

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.

Vatomandry weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°28825.7133.5
Feb29° / 25°31523.512.73.5
Mar28° / 24°34625.712.13.8
Apr27° / 23°15421.111.64.8
May26° / 22°16620.111.15.4
Jun24° / 20°12220.210.95.5
Jul23° / 19°13020.5115.5
Aug24° / 19°8417.211.36.1
Sep24° / 20°6414.611.96.5
Oct26° / 22°8215.212.46.2
Nov27° / 23°8214.812.95.8
Dec29° / 24°18821.213.14.3

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 31% of September, with mostly cloudy or overcast conditions the remaining 20%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38119
48119
58119
68119
78020
88020
98020
107921
117822
127822
137723
147723
157723
167723
177822
187822
197822
207921
217921
228020
238020
248119
258119
268119
278119
288119
298119
308020

Chance of precipitation in September

Any precipitation

Vatomandry gets around 64 mm of rain over 14.6 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 48% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
154
254
354
454
553
653
752
852
951
1050
1149
1248
1348
1447
1546
1646
1746
1845
1945
2045
2145
2245
2345
2445
2546
2646
2746
2847
2947
3048

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 77% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1131680
2131680
3130690
4129691
5129691
6128701
7228691
8228691
9227701
10227701
11227701
12226711
13225712
14125722
15124732
16123733
17122743
18121744
19120754
20119764
21118765
22117775
23115786
24114787
25113797
26112798
27012799
280117910
290117811
300107812

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 36 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over September. Sunrise moves from 5:55 AM to 5:29 AM, and sunset from 5:32 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:555:32
211.65:555:32
311.75:545:33
411.75:535:33
511.75:525:33
611.75:515:33
711.75:505:33
811.75:495:34
911.85:485:34
1011.85:475:34
1111.85:465:34
1211.85:455:34
1311.85:445:35
1411.95:445:35
1511.95:435:35
1611.95:425:35
1711.95:415:35
1811.95:405:36
1911.95:395:36
2012.05:385:36
2112.05:375:36
2212.05:365:36
2312.05:355:37
2412.05:345:37
2512.15:335:37
2612.15:325:37
2712.15:315:37
2812.15:315:38
2912.15:305:38
3012.25:295:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5 kWh/m².

For context, solar energy here swings from a low near 3.32 kWh/m² to a high of 6.18 kWh/m² in November across the year — September's 5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Vatomandry

In seasonPeak

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

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

Vatomandry's rainy season runs May–May, 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 Vatomandry?

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

6.5
Sightseeing
1st-best month of the year
5.6
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Vatomandry for sightseeing.

What to pack for Vatomandry in September

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

In September, Vatomandry sees daytime highs around 24°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

Sea temperature near Vatomandry in September

The nearest coast averages about 24°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 16 km away) is warmest in February at about 29°C and coldest in August near 24°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar28Tropical
Apr28Warm
May27Warm
Jun26Warm
Jul25Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov26Warm
Dec28Warm

UV index in Vatomandry in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Vatomandry peaks around February 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 13UV 16Jun 18UV 6
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun6High
Jul7Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov12Extreme
Dec14Extreme

Air quality in Vatomandry 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 Vatomandry is worst in October — around 34 µg/m³ PM2.5 (moderate), about 5.0× the cleanest month (February, 7 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 2133 µg/m³Feb 207 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb7Good
Mar7Good
Apr8Good
May11Good
Jun10Good
Jul9Good
Aug10Good
Sep10Good
Oct34Moderate
Nov27Moderate
Dec12Good
Location & terrain

Where is Vatomandry?

Vatomandry sits at 19.3°S, 49.0°E, 5 m above sea level, in Madagascar. The nearest listed city is Ampasimanolotra, 58 km away.

MoramangaMarolamboManjakandrianaAlarobiaToamasinaDidy

Topography around Vatomandry

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

Within 3 km, the terrain around Vatomandry has only modest variations in elevation — a maximum elevation change of 55 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,326 m.

The land around Vatomandry is covered by water (45%) and grassland (22%) within 3 km, water (53%) and trees (30%) within 16 km, and trees (37%) and water (35%) within 80 km.

3 km
55 m
16 km
170 m
80 km
1,326 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Ampasimanolotra 58 km · Mahanoro 66 km · Moramanga 89 km · Marolambo 121 km · Manjakandriana 132 km · Alarobia 137 km · Toamasina 139 km · Didy 143 km

Madagascar travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$599
2025
Happiness
4.2 / 10
World Happiness, 2025
Safe drinking water
22%
of population, 2024
Road deaths
29.2
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 457
Religion
Church of Jesus Christ in Madagascar/Malagasy Lutheran Church/Anglican Church 34%Roman Catholic 32%none 22%other Christian 8%

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 Vatomandry (-19.3302°, 48.9779°, elevation 5 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).