Ampasimanolotra weather in September

In September, Ampasimanolotra sees average daytime highs of 25°C and overnight lows near 18°C, with 69 mm of rain across 14.5 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 25°C through the month. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels humid.

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 Ampasimanolotra's 1st-clearest and 12th-windiest month. For the whole year in context, see Ampasimanolotra's year-round climate.

Daytime high
25°
9th warmest
Overnight low
18°
3rd coldest
Rainfall
69 mm
14.5 wet days
Daylight
11 h 54 min
5:41 AM – 5:35 PM
Cloud cover
47%
1st clearest
Wind
7 km/h
12th windiest
Solar energy
4.83 kWh/m²
Travel score
6.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical September day in Ampasimanolotra reaches about 25°C in the afternoon and slips back to 18°C overnight — a 6°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 2°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62418
72418
82418
92418
102418
112418
122418
132418
142418
152418
162518
172518
182518
192518
202518
212518
222519
232519
242519
252519
262519
272519
282519
292519
302519

How September really feels in Ampasimanolotra

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.

Ampasimanolotra 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° / 24°30325133.4
Feb29° / 24°31423.112.63.4
Mar29° / 23°3312512.13.7
Apr28° / 22°15420.311.64.9
May26° / 21°1502011.15.4
Jun24° / 19°12620.210.95.4
Jul23° / 18°14421115.3
Aug23° / 18°10118.511.45.8
Sep25° / 18°6914.511.96.4
Oct26° / 20°7813.912.46.2
Nov28° / 21°7313.312.95.7
Dec29° / 23°18820.413.14.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 35% of September, with mostly cloudy or overcast conditions the remaining 29%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26931
36931
46931
56931
66931
76931
87030
96931
106931
116931
126931
136832
146832
156832
166931
176931
187030
197129
207228
217327
227327
237426
247525
257525
267525
277624
287624
297624
307624

Chance of precipitation in September

Any precipitation

Ampasimanolotra gets around 69 mm of rain over 14.5 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 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
157
257
356
456
555
654
753
852
952
1051
1150
1249
1348
1448
1547
1647
1746
1846
1946
2045
2145
2245
2344
2444
2543
2643
2743
2843
2943
3043

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 40% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1770230
2769240
3768250
4767260
5766270
6765280
7764290
8763300
9762310
10761320
11760330
12758350
13658360
14657370
15655390
16654400
17553420
18552430
19550450
20549460
21448470
22447490
23446501
24345511
25344521
26343522
27242542
28241552
29240553
30238573

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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
211.65:545:32
311.75:535:33
411.75:525:33
511.75:515:33
611.75:505:33
711.75:495:33
811.75:495:33
911.85:485:34
1011.85:475:34
1111.85:465:34
1211.85:455:34
1311.85:445:34
1411.95:435:35
1511.95:425:35
1611.95:415:35
1711.95:405:35
1811.95:395:35
1911.95:385:35
2012.05:385:36
2112.05:375:36
2212.05:365:36
2312.05:355:36
2412.05:345:36
2512.15:335:37
2612.15:325:37
2712.15:315:37
2812.15:305:37
2912.15:295:37
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 4.83 kWh/m².

For context, solar energy here swings from a low near 3.19 kWh/m² to a high of 6.03 kWh/m² in November across the year — September's 4.83 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.6Bright
94.6Bright
104.6Bright
114.7Bright
124.7Bright
134.7Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.9Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.2Bright
Planning a trip in September

Hazard calendar for Ampasimanolotra

In seasonPeak

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

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

Ampasimanolotra's rainy season runs December–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 Ampasimanolotra?

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

6.4
Sightseeing
1st-best month of the year
5.6
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Ampasimanolotra for sightseeing.

What to pack for Ampasimanolotra in September

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

In September, Ampasimanolotra sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

Sea temperature near Ampasimanolotra 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 33 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 Ampasimanolotra 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 Ampasimanolotra peaks around February 14 at about 15 (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 14UV 15Jun 18UV 6
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar13Extreme
Apr10Extreme
May8Very high
Jun6High
Jul7Very high
Aug9Very high
Sep11Extreme
Oct12Extreme
Nov12Extreme
Dec14Extreme

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

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 934 µg/m³Mar 127 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar7Good
Apr7Good
May9Good
Jun8Good
Jul8Good
Aug8Good
Sep11Good
Oct33Moderate
Nov34Moderate
Dec13Moderate
Location & terrain

Where is Ampasimanolotra?

Ampasimanolotra sits at 18.8°S, 49.1°E, 13 m above sea level, in Madagascar. The nearest listed city is Vatomandry, 58 km away.

MoramangaDidyMahanoroAmbatondrazakaManjakandrianaAnjozorobe

Topography around Ampasimanolotra

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

Within 3 km, the terrain around Ampasimanolotra has only modest variations in elevation — a maximum elevation change of 97 m around an average of 26 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 264 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,536 m.

The land around Ampasimanolotra is covered by trees (38%) and grassland (21%) within 3 km, trees (47%), grassland (21%) and water (20%) within 16 km, and trees (49%) and water (32%) within 80 km.

3 km
97 m
16 km
264 m
80 km
1,536 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Vatomandry 58 km · Toamasina 82 km · Moramanga 89 km · Didy 96 km · Mahanoro 124 km · Ambatondrazaka 129 km · Manjakandriana 134 km · Anjozorobe 135 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 Ampasimanolotra (-18.8167°, 49.0667°, elevation 13 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).