Antsohihy weather in September

In September, Antsohihy sees average daytime highs of 34°C and overnight lows near 21°C, with 4 mm of rain across 0.9 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 33°C in the first days to 34°C by the end. The sky is clear or mostly clear about 80% 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 Antsohihy's 1st-clearest and 4th-windiest month. For the whole year in context, see Antsohihy's year-round climate.

Daytime high
34°
3rd warmest
Overnight low
21°
4th coldest
Rainfall
4 mm
0.9 wet days
Daylight
11 h 54 min
5:45 AM – 5:40 PM
Cloud cover
22%
1st clearest
Wind
13 km/h
4th windiest
Solar energy
6.55 kWh/m²
Travel score
4.2
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 Antsohihy reaches about 34°C in the afternoon and slips back to 21°C overnight — a 13°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 1°C cooler than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13320
23320
33320
43320
53320
63320
73320
83320
93320
103320
113320
123320
133320
143420
153421
163421
173421
183421
193421
203421
213421
223421
233421
243421
253421
263421
273421
283421
293421
303521

How September really feels in Antsohihy

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.

Antsohihy 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
Jan31° / 24°4542812.82.4
Feb31° / 24°37425.312.52.5
Mar32° / 23°23121.212.12.8
Apr33° / 23°509.311.73.5
May33° / 22°132.211.34.5
Jun32° / 20°30.611.15.5
Jul31° / 20°10.511.25.8
Aug32° / 20°30.511.55.2
Sep34° / 21°40.911.94.2
Oct35° / 22°225.512.33.0
Nov35° / 24°9913.312.72.5
Dec33° / 24°23623.312.92.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 80% 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 6%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1946
2946
3937
4937
5937
6937
7937
8937
9937
10937
11937
12937
13937
14937
15937
16937
17937
18937
19937
20937
21937
22946
23946
24946
25946
26955
27955
28955
29955
30955

Chance of precipitation in September

Any precipitation

Antsohihy gets around 4 mm of rain over 0.9 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 (%)
13
23
33
43
53
63
73
83
93
103
113
123
132
142
152
162
172
182
192
202
213
223
233
243
254
264
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 56% 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 (%)
116621660
216611760
316611760
415601870
515591970
614592070
713602070
812602170
912592270
1011602270
1110602370
1210592470
139592570
148592670
158592670
168572780
177582780
187562890
197562890
207552990
2175429100
2275329101
2375229111
2475030121
2565130121
2665030131
2764930142
2864830142
2954730152
3054631153

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm

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 5:57 AM to 5:34 AM, and sunset from 5:39 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:575:39
211.75:565:39
311.75:555:39
411.75:545:39
511.85:545:39
611.85:535:39
711.85:525:39
811.85:515:39
911.85:505:40
1011.85:505:40
1111.85:495:40
1211.95:485:40
1311.95:475:40
1411.95:465:40
1511.95:465:40
1611.95:455:40
1711.95:445:40
1811.95:435:40
1912.05:425:40
2012.05:425:40
2112.05:415:40
2212.05:405:40
2312.05:395:40
2412.05:385:40
2512.05:385:40
2612.15:375:41
2712.15:365:41
2812.15:355:41
2912.15:355:41
3012.15:345:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.55 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 7.05 kWh/m² in October across the year — September's 6.55 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.2Intense
56.2Intense
66.2Intense
76.3Intense
86.3Intense
96.3Intense
106.4Intense
116.4Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
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 Antsohihy

In seasonPeak

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

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

Antsohihy'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 Antsohihy?

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

4.2
Sightseeing
5th-best month of the year
7.9
Beach & pool
4th-best month of the year

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

What to pack for Antsohihy in September

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

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

light clothessun protection

Sea temperature near Antsohihy 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 48 km away) is warmest in April at about 30°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Tropical
Dec29Tropical

UV index in Antsohihy 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 Antsohihy peaks around February 12 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 highExtremeFeb 12UV 15Jun 20UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Antsohihy 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 Antsohihy is worst in November — around 24 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (July, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1522 µg/m³Jul 125 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr6Good
May6Good
Jun5Good
Jul5Good
Aug7Good
Sep10Good
Oct15Moderate
Nov24Moderate
Dec14Moderate
Location & terrain

Where is Antsohihy?

Antsohihy sits at 14.9°S, 48.0°E, 18 m above sea level, in Madagascar. The nearest listed city is Befandriana, 73 km away.

BealananaMampikonyAmbanjaHell-VilleAmbarakaraka

Topography around Antsohihy

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

Within 3 km, the terrain around Antsohihy has only modest variations in elevation — a maximum elevation change of 56 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 139 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,740 m.

The land around Antsohihy is covered by grassland (49%) and trees (22%) within 3 km, grassland (66%) within 16 km, and grassland (56%) and trees (21%) within 80 km.

3 km
56 m
16 km
139 m
80 km
1,740 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Befandriana 73 km · Maromandia 74 km · Boriziny 82 km · Bealanana 90 km · Mampikony 140 km · Ambanja 144 km · Hell-Ville 168 km · Ambarakaraka 180 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 Antsohihy (-14.8796°, 47.9875°, elevation 18 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).