Betioky weather in September

In September, Betioky sees average daytime highs of 32°C and overnight lows near 17°C, with 4 mm of rain across 0.8 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 30°C in the first days to 33°C by the end. The sky is clear or mostly clear about 88% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Betioky's 3rd-clearest and 1st-windiest month. For the whole year in context, see Betioky's year-round climate.

Daytime high
32°
8th warmest
Overnight low
17°
4th coldest
Rainfall
4 mm
0.8 wet days
Daylight
11 h 54 min
6:01 AM – 5:53 PM
Cloud cover
14%
3rd clearest
Wind
12 km/h
1st windiest
Solar energy
6.28 kWh/m²
Travel score
5.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 30°C in the first days to 33°C by the end.

A typical September day in Betioky reaches about 32°C in the afternoon and slips back to 17°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 35°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

10°20°30°40°151015202530
Avg high (°C)Avg low (°C)
13016
23016
33016
43017
53117
63117
73117
83117
93117
103117
113117
123117
133117
143217
153217
163217
173217
183218
193218
203218
213218
223218
233218
243318
253318
263318
273318
283319
293319
303319

How September really feels in Betioky

Once humidity and wind are folded in, September averages 12 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
12
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.

Betioky 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
Jan33° / 23°19117.413.32.9
Feb33° / 23°11413.512.83.1
Mar33° / 23°629.412.23.5
Apr32° / 21°224.211.54.7
May30° / 18°51.410.96.7
Jun28° / 16°30.910.68.5
Jul27° / 15°30.610.78.8
Aug29° / 16°30.611.27.5
Sep32° / 17°40.811.95.7
Oct33° / 20°152.912.64.1
Nov34° / 22°356.213.13.3
Dec34° / 23°10012.713.43.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 88% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 5%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1973
2973
3973
4973
5973
6973
7964
8964
9964
10964
11964
12964
13964
14964
15964
16955
17955
18955
19955
20955
21955
22955
23946
24946
25937
26937
27937
28928
29928
30919

Chance of precipitation in September

Any precipitation

Betioky gets around 4 mm of rain over 0.8 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 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
23
33
43
53
63
73
83
93
103
113
123
133
143
153
163
173
182
192
202
212
223
233
243
253
264
274
284
294
305

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 68% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1821620
2821620
3821620
4811630
5811630
6801730
7801730
8791830
9781930
10781930
11772030
12752230
13742330
14722530
15712630
16692830
17672940
18663040
19643240
20623350
21613450
22593560
23573571
24553681
25533791
26533791
275138101
285039111
294839121
304740121

Wind in September

Winds average 12 km/h in September, the windiest month of the year.

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

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 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 42 minutes over September. Sunrise moves from 6:17 AM to 5:46 AM, and sunset from 5:48 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:175:48
211.56:165:48
311.66:155:48
411.66:145:49
511.66:135:49
611.66:125:49
711.76:115:50
811.76:095:50
911.76:085:50
1011.76:075:51
1111.76:065:51
1211.86:055:51
1311.86:045:52
1411.86:035:52
1511.86:025:52
1611.96:015:53
1711.96:005:53
1811.95:595:53
1911.95:585:54
2012.05:575:54
2112.05:555:54
2212.05:545:55
2312.05:535:55
2412.15:525:55
2512.15:515:56
2612.15:505:56
2712.15:495:57
2812.15:485:57
2912.25:475:57
3012.25:465:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.28 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 7.42 kWh/m² in November across the year — September's 6.28 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.8Bright
35.8Bright
45.8Bright
55.9Bright
65.9Bright
76.0Bright
86.0Intense
96.0Intense
106.1Intense
116.1Intense
126.2Intense
136.2Intense
146.2Intense
156.3Intense
166.3Intense
176.3Intense
186.4Intense
196.4Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.6Intense
256.6Intense
266.6Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in September

Hazard calendar for Betioky

In seasonPeak

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

Betioky's monsoon runs December–February, 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 Betioky?

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

5.7
Sightseeing
5th-best month of the year
8.6
Beach & pool
5th-best month of the year

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

What to pack for Betioky in September

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

In September, Betioky sees daytime highs around 32°C and nights near 17°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Betioky in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Betioky peaks around January 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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 highExtremeJan 24UV 14Jun 20UV 6
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar13Extreme
Apr9Very high
May7High
Jun6High
Jul6High
Aug7Very high
Sep8Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme
Location & terrain

Where is Betioky?

Betioky sits at 23.7°S, 44.4°E, 257 m above sea level, in Madagascar. The nearest listed city is Anakao, 75 km away.

ToliaraSakarahaBekilyAmpanihyItampoloAnkazoaboBeloha

Topography around Betioky

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

Within 3 km, the terrain around Betioky has only modest variations in elevation — a maximum elevation change of 94 m around an average of 249 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 304 m; within 80 km, large variations in elevation — a maximum elevation change of 832 m.

The land around Betioky is covered by grassland (59%) and shrubs (23%) within 3 km, shrubs (44%) and grassland (31%) within 16 km, and shrubs (48%) and grassland (35%) within 80 km.

3 km
94 m
16 km
304 m
80 km
832 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Anakao 75 km · Toliara 84 km · Sakaraha 93 km · Bekily 110 km · Ampanihy 114 km · Itampolo 116 km · Ankazoabo 160 km · Beloha 174 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 Betioky (-23.7206°, 44.3807°, elevation 257 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).