Ambato Boeny weather in September

In September, Ambato Boeny sees average daytime highs of 34°C and overnight lows near 21°C, with 3 mm of rain across 0.7 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 33°C in the first days to 34°C by the end. The sky is clear or mostly clear about 83% 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 Ambato Boeny's 1st-clearest and 3rd-windiest month. For the whole year in context, see Ambato Boeny's year-round climate.

Daytime high
34°
4th warmest
Overnight low
21°
4th coldest
Rainfall
3 mm
0.7 wet days
Daylight
11 h 54 min
5:50 AM – 5:45 PM
Cloud cover
20%
1st clearest
Wind
9 km/h
3rd windiest
Solar energy
6.57 kWh/m²
Travel score
4.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 33°C in the first days to 34°C by the end.

A typical September day in Ambato Boeny reaches about 34°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)
13320
23320
33320
43320
53321
63321
73321
83321
93321
103321
113321
123321
133321
143321
153421
163421
173421
183421
193422
203422
213422
223422
233422
243422
253422
263422
273422
283422
293422
303522

How September really feels in Ambato Boeny

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.

Ambato Boeny weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 25°40527.312.92.3
Feb32° / 25°30524.112.62.4
Mar33° / 25°20319.312.12.7
Apr34° / 24°436.711.63.7
May33° / 22°8111.24.7
Jun31° / 20°10.2115.8
Jul31° / 19°10.311.16.1
Aug32° / 20°10.211.45.4
Sep34° / 21°30.711.94.3
Oct35° / 24°234.612.43.0
Nov35° / 25°10013.712.82.4
Dec33° / 25°22821.8132.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 83% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 6%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1937
2937
3937
4937
5937
6937
7937
8937
9937
10937
11946
12955
13955
14955
15955
16955
17955
18955
19955
20955
21955
22964
23964
24964
25964
26964
27964
28955
29955
30946

Chance of precipitation in September

Any precipitation

Ambato Boeny gets around 3 mm of rain over 0.7 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 3% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
122
132
142
152
162
172
183
193
203
213
223
234
244
254
265
275
285
296
306

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
124571720
224561820
324551920
423551930
523542030
622542130
722542130
821542230
920532340
1020532340
1119542340
1219522450
1318532450
1418522460
1517522470
1617512570
1716512580
1816502590
19155025100
20145125100
21145025110
22135025120
23135025120
24125025121
25115025131
26115025131
27104925141
28104925142
2994926152
3094826152

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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 5:43 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:035:43
211.76:025:43
311.76:015:43
411.76:005:43
511.75:595:44
611.85:595:44
711.85:585:44
811.85:575:44
911.85:565:44
1011.85:555:44
1111.85:545:44
1211.85:545:44
1311.95:535:44
1411.95:525:45
1511.95:515:45
1611.95:505:45
1711.95:495:45
1811.95:485:45
1912.05:485:45
2012.05:475:45
2112.05:465:45
2212.05:455:45
2312.05:445:45
2412.05:435:46
2512.15:435:46
2612.15:425:46
2712.15:415:46
2812.15:405:46
2912.15:395:46
3012.15:395:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.57 kWh/m².

For context, solar energy here swings from a low near 4.8 kWh/m² to a high of 7.1 kWh/m² in October across the year — September's 6.57 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.2Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.3Intense
86.4Intense
96.4Intense
106.4Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.6Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.9Intense
306.9Intense
Planning a trip in September

Hazard calendar for Ambato Boeny

In seasonPeak

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

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

Ambato Boeny'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 Ambato Boeny?

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

4.3
Sightseeing
5th-best month of the year
8.0
Beach & pool
5th-best month of the year

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

What to pack for Ambato Boeny in September

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

In September, Ambato Boeny sees daytime highs around 34°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Ambato Boeny 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 Ambato Boeny peaks around February 12 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 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 18UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov12Extreme
Dec14Extreme
Location & terrain

Where is Ambato Boeny?

Ambato Boeny sits at 16.5°S, 46.7°E, 36 m above sea level, in Madagascar. The nearest listed city is Marovoay, 40 km away.

MahajangaTsaratananaMampikonyBorizinySoalala

Topography around Ambato Boeny

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

Within 3 km, the terrain around Ambato Boeny has only modest variations in elevation — a maximum elevation change of 47 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 236 m; within 80 km, large variations in elevation — a maximum elevation change of 768 m.

The land around Ambato Boeny is covered by cropland (63%) within 3 km, grassland (42%) and cropland (34%) within 16 km, and grassland (70%) within 80 km.

3 km
47 m
16 km
236 m
80 km
768 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Marovoay 40 km · Maevatanana 55 km · Sitampiky 69 km · Mahajanga 94 km · Tsaratanana 106 km · Mampikony 108 km · Boriziny 144 km · Soalala 155 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 Ambato Boeny (-16.4667°, 46.7167°, elevation 36 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). 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).