Antsirabe weather in September

In September, Antsirabe sees average daytime highs of 23°C and overnight lows near 9°C, with 11 mm of rain across 2.2 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels dry.

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 Antsirabe's 2nd-clearest and 4th-windiest month. For the whole year in context, see Antsirabe's year-round climate.

Daytime high
23°
8th warmest
Overnight low
4th coldest
Rainfall
11 mm
2.2 wet days
Daylight
11 h 54 min
5:50 AM – 5:43 PM
Cloud cover
32%
2nd clearest
Wind
9 km/h
4th windiest
Solar energy
6.34 kWh/m²
Travel score
8.5
out of 10

Antsirabe is city in Madagascar.

Density
1,963/km²
people per km²
Founded
1872

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 21°C in the first days to 24°C by the end.

A typical September day in Antsirabe reaches about 23°C in the afternoon and slips back to 9°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, September runs about 3°C warmer than August and about 1°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
1218
2218
3218
4218
5218
6218
7228
8228
9228
10228
11228
12228
13229
14239
15239
16239
17239
18239
19239
20239
21239
22239
232310
242310
252410
262410
272410
282410
292410
302410

Antsirabe weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 15°3802413.14.5
Feb23° / 15°3202112.74.7
Mar23° / 14°2141812.15.6
Apr23° / 12°7310.911.66.8
May21° / 10°213.811.17.6
Jun19° / 61.310.87.7
Jul18° / 51.210.97.7
Aug20° / 61.511.38.1
Sep23° / 112.211.98.5
Oct24° / 11°839.712.57.4
Nov24° / 13°19916.512.95.9
Dec24° / 14°33322.113.24.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 21%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27921
37921
47921
57921
68020
78020
88020
97921
108020
118020
128020
138020
148020
158119
168020
178020
187921
197921
207921
217921
227822
237822
247723
257723
267624
277624
287525
297525
307525

Chance of precipitation in September

Any precipitation

Antsirabe gets around 11 mm of rain over 2.2 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 8% and peaks near 16% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
16
26
36
46
56
66
76
86
96
106
116
126
136
146
157
167
177
187
198
208
219
229
2310
2411
2512
2613
2714
2815
2915
3016

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
15991
16991
17991
18991
19991
20991
21991
22991
23982
24982
25982
26982
27973
28973
29973
30964

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
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:04 AM to 5:36 AM, and sunset from 5:40 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:045:40
211.66:035:40
311.66:025:40
411.76:015:40
511.76:005:41
611.75:595:41
711.75:585:41
811.75:575:41
911.85:565:41
1011.85:555:42
1111.85:545:42
1211.85:535:42
1311.85:525:42
1411.85:515:42
1511.95:505:43
1611.95:505:43
1711.95:495:43
1811.95:485:43
1911.95:475:43
2012.05:465:44
2112.05:455:44
2212.05:445:44
2312.05:435:44
2412.05:425:45
2512.15:415:45
2612.15:405:45
2712.15:395:45
2812.15:385:45
2912.15:375:46
3012.25:365:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.34 kWh/m².

For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 6.82 kWh/m² in October across the year — September's 6.34 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.9Bright
35.9Bright
45.9Bright
56.0Bright
66.0Intense
76.1Intense
86.1Intense
96.1Intense
106.2Intense
116.2Intense
126.2Intense
136.3Intense
146.3Intense
156.3Intense
166.4Intense
176.4Intense
186.4Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in September

Hazard calendar for Antsirabe

In seasonPeak

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

Antsirabe's monsoon runs November–March, when most of the year's rain falls.

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

Is September a good time to visit Antsirabe?

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

8.5
Sightseeing
1st-best month of the year
6.1
Beach & pool
2nd-best month of the year

September is one of the better times to visit Antsirabe for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Antsirabe in September

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

In September, Antsirabe sees daytime highs around 23°C and nights near 9°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Antsirabe 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 Antsirabe peaks around February 12 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeFeb 12UV 17Jun 17UV 7
UV index (midday)Level
Jan16Extreme
Feb17Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec16Extreme

Air quality in Antsirabe 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 Antsirabe is worst in October — around 31 µg/m³ PM2.5 (moderate), about 5.3× the cleanest month (January, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1729 µg/m³Jan 166 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar12Good
Apr16Moderate
May24Moderate
Jun23Moderate
Jul22Moderate
Aug20Moderate
Sep17Moderate
Oct31Moderate
Nov18Moderate
Dec8Good
Location & terrain

Where is Antsirabe?

Antsirabe sits at 19.9°S, 47.0°E, 1,513 m above sea level, in Madagascar. The nearest listed city is Betafo, 20 km away.

Topography around Antsirabe

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

Within 3 km, the terrain around Antsirabe has only modest variations in elevation — a maximum elevation change of 203 m around an average of 1,498 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 795 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,982 m.

The land around Antsirabe is covered by cropland (59%) and artificial surfaces (28%) within 3 km, cropland (71%) and grassland (25%) within 16 km, and grassland (66%) and cropland (29%) within 80 km.

3 km
203 m
16 km
795 m
80 km
1,982 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Betafo 20 km · Soanindrariny 21 km · Antanifotsy 38 km · Faratsiho 53 km · Fandriana 55 km · Miandrarivo 57 km · Ambatolampy 67 km · Ambositra 77 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 Antsirabe (-19.8659°, 47.0333°, elevation 1,513 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. 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).