Marovoay weather in September

In September, Marovoay sees average daytime highs of 33°C and overnight lows near 21°C, with 2 mm of rain across 0.6 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 34°C by the end. The sky is clear or mostly clear about 77% 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 Marovoay's 1st-clearest and 3rd-windiest month. For the whole year in context, see Marovoay's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
21°
4th coldest
Rainfall
2 mm
0.6 wet days
Daylight
11 h 54 min
5:50 AM – 5:45 PM
Cloud cover
24%
1st clearest
Wind
11 km/h
3rd windiest
Solar energy
6.59 kWh/m²
Travel score
4.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 32°C in the first days to 34°C by the end.

A typical September day in Marovoay reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 35°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13220
23220
33220
43320
53320
63320
73320
83320
93321
103321
113321
123321
133321
143321
153321
163321
173321
183321
193421
203421
213421
223421
233422
243422
253422
263422
273422
283422
293422
303422

How September really feels in Marovoay

Once humidity and wind are folded in, September averages 30 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
30
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.

Marovoay weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 24°39127.512.92.4
Feb32° / 24°31124.612.52.5
Mar33° / 24°2162112.12.8
Apr33° / 23°457.511.63.8
May33° / 22°91.311.34.9
Jun31° / 20°10.211.15.9
Jul31° / 19°10.411.16.1
Aug32° / 20°10.311.55.5
Sep33° / 21°20.611.94.4
Oct35° / 23°194.412.43.2
Nov35° / 24°9713.612.82.6
Dec33° / 24°21622.812.92.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 77% 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 9%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18911
28911
38911
48911
58911
68911
78911
89010
99010
109010
11919
12919
13919
14919
15919
16919
17919
18919
19919
20928
21937
22937
23937
24946
25946
26946
27946
28937
29946
30946

Chance of precipitation in September

Any precipitation

Marovoay gets around 2 mm of rain over 0.6 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 2% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
32
42
52
62
72
82
92
102
112
122
132
142
152
162
172
182
192
202
212
222
233
243
253
264
274
284
295
305

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
127521740
227521740
326521750
425521850
524531850
623531860
723521960
822531960
921541960
1020532070
1120532070
1219532170
1318532270
1418522280
1517522380
1616522480
1716502491
1815502591
19154926101
20144926101
21144826111
22134827111
23134827121
24124727121
25124727132
26114727132
27114627142
28114627142
29104527152
30104428162

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 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
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 6:03 AM to 5:39 AM, and sunset from 5:44 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:035:44
211.76:025:44
311.76:015:44
411.76:005:44
511.76:005:44
611.85:595:44
711.85:585:44
811.85:575:44
911.85:565:44
1011.85:555:45
1111.85:555:45
1211.85:545:45
1311.95:535:45
1411.95:525:45
1511.95:515:45
1611.95:505:45
1711.95:505:45
1811.95:495:45
1912.05:485:45
2012.05:475:45
2112.05:465:46
2212.05:455:46
2312.05:455:46
2412.05:445:46
2512.15:435:46
2612.15:425:46
2712.15:415:46
2812.15:405:46
2912.15:405:46
3012.15:395:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.59 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 7.09 kWh/m² in October across the year — September's 6.59 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.9Intense
286.9Intense
296.9Intense
306.9Intense
Planning a trip in September

Hazard calendar for Marovoay

In seasonPeak

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

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

Marovoay's monsoon runs December–March, 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 Marovoay?

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

4.4
Sightseeing
5th-best month of the year
8.0
Beach & pool
5th-best month of the year

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

What to pack for Marovoay in September

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

In September, Marovoay sees daytime highs around 33°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Marovoay 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 61 km away) is warmest in March at about 30°C and coldest in August near 25°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep26Warm
Oct27Warm
Nov29Tropical
Dec29Tropical

UV index in Marovoay 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 Marovoay peaks around February 12 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 highExtremeFeb 12UV 16Jun 19UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Marovoay?

Marovoay sits at 16.1°S, 46.6°E, 33 m above sea level, in Madagascar. The nearest listed city is Ambato Boeny, 40 km away.

SitampikyMaevatananaMampikonyBorizinyTsaratananaSoalala

Topography around Marovoay

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

Within 3 km, the terrain around Marovoay has only modest variations in elevation — a maximum elevation change of 60 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 105 m; within 80 km, significant variations in elevation — a maximum elevation change of 359 m.

The land around Marovoay is covered by cropland (71%) within 3 km, grassland (48%) and cropland (36%) within 16 km, and grassland (59%) and trees (21%) within 80 km.

3 km
60 m
16 km
105 m
80 km
359 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Ambato Boeny 40 km · Mahajanga 56 km · Sitampiky 85 km · Maevatanana 95 km · Mampikony 107 km · Boriziny 126 km · Tsaratanana 132 km · Soalala 142 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 Marovoay (-16.1106°, 46.6438°, elevation 33 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).