Maroantsetra weather in September

In September, Maroantsetra sees average daytime highs of 23°C and overnight lows near 19°C, with 178 mm of rain across 25.7 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels humid.

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 Maroantsetra's 4th-clearest and 4th-windiest month. For the whole year in context, see Maroantsetra's year-round climate.

Daytime high
23°
10th warmest
Overnight low
19°
3rd coldest
Rainfall
178 mm
25.7 wet days
Daylight
11 h 54 min
5:38 AM – 5:33 PM
Cloud cover
59%
4th clearest
Wind
11 km/h
4th windiest
Solar energy
4.62 kWh/m²
Travel score
4.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Maroantsetra reaches about 23°C in the afternoon and slips back to 19°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 24°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12219
22319
32319
42319
52319
62319
72319
82319
92319
102319
112319
122319
132319
142319
152319
162319
172319
182319
192319
202319
212319
222319
232319
242319
252319
262419
272419
282419
292420
302420

Maroantsetra weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°34227.512.83.4
Feb28° / 24°3542512.53.4
Mar28° / 23°38728.312.13.7
Apr26° / 23°29327.411.73.9
May25° / 21°23025.411.34.5
Jun23° / 20°27727.611.14.1
Jul22° / 19°31628.911.23.9
Aug22° / 19°2502811.54.0
Sep23° / 19°17825.711.94.4
Oct25° / 20°14324.312.44.8
Nov26° / 22°14022.212.74.8
Dec28° / 23°22626.512.94.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 35% of September, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14852
24852
34951
44852
54852
64852
74852
84852
94852
104753
114753
124753
134753
144753
154852
164852
174852
184951
194951
205050
215149
225248
235248
245347
255446
265446
275545
285545
295644
305644

Chance of precipitation in September

Any precipitation

Maroantsetra gets around 178 mm of rain over 25.7 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 86% and peaks near 89% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
289
389
488
588
688
787
887
987
1087
1186
1286
1386
1486
1586
1686
1786
1885
1985
2085
2184
2284
2384
2483
2583
2683
2782
2882
2982
3082

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 44% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1367300
2366310
3365320
4364330
5364330
6363340
7362350
8262360
9261370
10261370
11260380
12259390
13258400
14257410
15256420
16255430
17254440
18153460
19152470
20151480
21149490
22148510
23147511
24246511
25245521
26243541
27242551
28241561
29240562
30240562

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
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 5:50 AM to 5:27 AM, and sunset from 5:32 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:505:32
211.75:495:32
311.75:485:32
411.75:485:32
511.85:475:32
611.85:465:32
711.85:455:32
811.85:445:32
911.85:445:32
1011.85:435:32
1111.85:425:32
1211.95:415:33
1311.95:405:33
1411.95:405:33
1511.95:395:33
1611.95:385:33
1711.95:375:33
1811.95:365:33
1912.05:355:33
2012.05:355:33
2112.05:345:33
2212.05:335:33
2312.05:325:33
2412.05:315:33
2512.05:315:34
2612.15:305:34
2712.15:295:34
2812.15:285:34
2912.15:275:34
3012.15:275:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 3.24 kWh/m² to a high of 5.76 kWh/m² in November across the year — September's 4.62 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.6Bright
154.6Bright
164.6Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.8Bright
224.8Bright
234.8Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Maroantsetra

In seasonPeak

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

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

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

Is September a good time to visit Maroantsetra?

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

4.4
Sightseeing
4th-best month of the year
3.4
Beach & pool
9th-best month of the year

September is a reasonable time to visit Maroantsetra for sightseeing.

What to pack for Maroantsetra in September

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

In September, Maroantsetra sees daytime highs around 23°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 26 days see rain.

rain gearlight clothessun protection

Sea temperature near Maroantsetra 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 26 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
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr28Tropical
May27Warm
Jun25Warm
Jul24Warm
Aug24Refreshing
Sep24Warm
Oct26Warm
Nov27Warm
Dec28Tropical

UV index in Maroantsetra in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Maroantsetra peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 24UV 15Jun 20UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Maroantsetra 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 Maroantsetra is worst in November — around 26 µg/m³ PM2.5 (moderate), about 6.4× the cleanest month (August, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1825 µg/m³Aug 184 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb5Good
Mar5Good
Apr5Good
May5Good
Jun5Good
Jul5Good
Aug4Good
Sep4Good
Oct7Good
Nov26Moderate
Dec16Moderate
Location & terrain

Where is Maroantsetra?

Maroantsetra sits at 15.4°S, 49.7°E, 10 m above sea level, in Madagascar. The nearest listed city is Mananara, 82 km away.

AndapaAmpahanaBefandrianaSambavaBealananaSoanierana Ivongo

Topography around Maroantsetra

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

Within 3 km, the terrain around Maroantsetra has only modest variations in elevation — a maximum elevation change of 13 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 518 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,494 m.

The land around Maroantsetra is covered by water (31%) and trees (20%) within 3 km, water (40%) and trees (28%) within 16 km, and trees (66%) within 80 km.

3 km
13 m
16 km
518 m
80 km
1,494 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Mananara 82 km · Antalaha 83 km · Andapa 88 km · Ampahana 92 km · Befandriana 130 km · Sambava 138 km · Bealanana 145 km · Soanierana Ivongo 166 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 Maroantsetra (-15.4353°, 49.7379°, elevation 10 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).