Tsiombe weather in September

In September, Tsiombe sees average daytime highs of 29°C and overnight lows near 17°C, with 10 mm of rain across 2.2 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 73% of the time in September, and the air most often feels comfortable.

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 Tsiombe's 2nd-clearest and 7th-windiest month. For the whole year in context, see Tsiombe's year-round climate.

Daytime high
29°
8th warmest
Overnight low
17°
4th coldest
Rainfall
10 mm
2.2 wet days
Daylight
11 h 54 min
5:57 AM – 5:48 PM
Cloud cover
24%
2nd clearest
Wind
13 km/h
7th windiest
Solar energy
5.88 kWh/m²
Travel score
6.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 30°C by the end.

A typical September day in Tsiombe reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12816
22816
32816
42817
52817
62917
72917
82917
92917
102917
112917
122917
132917
142917
152917
162917
172917
182917
193017
203017
213018
223018
233018
243018
253018
263018
273018
283018
293018
303018

How September really feels in Tsiombe

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.

Tsiombe 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
Jan32° / 23°13515.913.43.4
Feb32° / 23°11713.312.93.7
Mar31° / 22°589.412.24.5
Apr30° / 21°337.311.45.7
May28° / 18°164.210.87.6
Jun26° / 16°92.610.58.5
Jul25° / 15°8210.68.7
Aug27° / 16°102.211.18.3
Sep29° / 17°102.211.86.9
Oct31° / 19°215.112.65.5
Nov32° / 21°466.613.24.6
Dec32° / 22°9313.913.53.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 73% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
29010
39010
49010
59010
69010
79010
89010
98911
108911
118911
128911
138812
148812
158812
168812
178614
188614
198614
208614
218416
228416
238416
248218
258218
268119
278119
288020
298020
308020

Chance of precipitation in September

Any precipitation

Tsiombe gets around 10 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 7% and peaks near 11% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
16
27
37
47
57
67
77
87
97
107
116
126
136
146
156
166
176
186
196
207
217
228
238
249
259
2610
2710
2810
2911
3011

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 42% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13844180
23744190
33744190
43644190
53644200
63544200
73545200
83445200
93346210
103246210
113246220
123146230
133046230
142946250
152846261
162745271
172644291
182543301
192542321
202442332
212341352
222240362
232139373
242038393
251938404
261837405
271737415
281637426
291536426
301536427

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 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
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3014light breeze

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 6:13 AM to 5:41 AM, and sunset from 5:42 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:135:42
211.56:125:43
311.56:115:43
411.66:105:43
511.66:095:44
611.66:085:44
711.66:075:45
811.76:065:45
911.76:055:45
1011.76:045:46
1111.76:025:46
1211.86:015:46
1311.86:005:47
1411.85:595:47
1511.85:585:48
1611.95:575:48
1711.95:565:48
1811.95:555:49
1911.95:535:49
2012.05:525:50
2112.05:515:50
2212.05:505:50
2312.05:495:51
2412.15:485:51
2512.15:475:52
2612.15:455:52
2712.15:445:52
2812.25:435:53
2912.25:425:53
3012.25:415:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 3.62 kWh/m² to a high of 7.2 kWh/m² in December across the year — September's 5.88 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Intense
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Tsiombe

In seasonPeak

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

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

Tsiombe's rainy season runs December–February, 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 Tsiombe?

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

6.9
Sightseeing
5th-best month of the year
8.8
Beach & pool
1st-best month of the year

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

What to pack for Tsiombe in September

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

In September, Tsiombe sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Tsiombe in September

The nearest coast averages about 23°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 38 km away) is warmest in February at about 27°C and coldest in August near 22°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar26Warm
Apr25Warm
May24Warm
Jun23Refreshing
Jul22Refreshing
Aug22Refreshing
Sep23Refreshing
Oct24Refreshing
Nov24Warm
Dec26Warm

UV index in Tsiombe in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tsiombe peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 18UV 14Jun 21UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5High
Jul5High
Aug7High
Sep8Very high
Oct10Very high
Nov12Extreme
Dec14Extreme
Location & terrain

Where is Tsiombe?

Tsiombe sits at 25.3°S, 45.5°E, 66 m above sea level, in Madagascar. The nearest listed city is Jafaro, 43 km away.

AmboasaryAmpanihyBekilyTôlanaroItampolo

Topography around Tsiombe

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

Within 3 km, the terrain around Tsiombe has only modest variations in elevation — a maximum elevation change of 63 m around an average of 76 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 173 m; within 80 km, large variations in elevation — a maximum elevation change of 801 m.

The land around Tsiombe is covered by shrubs (60%) and trees (27%) within 3 km, shrubs (52%) and trees (32%) within 16 km, and shrubs (38%) and water (31%) within 80 km.

3 km
63 m
16 km
173 m
80 km
801 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Jafaro 43 km · Beloha 46 km · Ambovombe 62 km · Amboasary 95 km · Ampanihy 100 km · Bekily 122 km · Tôlanaro 154 km · Itampolo 169 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 Tsiombe (-25.3°, 45.4833°, elevation 66 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).