Iharan̈a weather in September

In September, Iharan̈a sees average daytime highs of 26°C and overnight lows near 22°C, with 41 mm of rain across 11.2 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 63% of the time in September, and the air most often feels muggy.

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 Iharan̈a's 1st-clearest and 3rd-windiest month. For the whole year in context, see Iharan̈a's year-round climate.

Daytime high
26°
10th warmest
Overnight low
22°
3rd coldest
Rainfall
41 mm
11.2 wet days
Daylight
11 h 54 min
5:37 AM – 5:32 PM
Cloud cover
37%
1st clearest
Wind
29 km/h
3rd windiest
Solar energy
5.76 kWh/m²
Travel score
7.0
out of 10

Iharan̈a is city in Madagascar.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Iharan̈a reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 26°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12522
22522
32522
42522
52522
62522
72522
82522
92522
102522
112522
122522
132522
142622
152622
162622
172622
182622
192622
202622
212622
222622
232622
242622
252622
262622
272622
282622
292622
302622

How September really feels in Iharan̈a

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.

Iharan̈a weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°22324.512.73.6
Feb29° / 25°19022.112.43.6
Mar29° / 25°18823.312.13.9
Apr28° / 25°11718.611.74.8
May27° / 24°5612.811.46.4
Jun26° / 23°5612.811.26.5
Jul25° / 22°6613.211.36.6
Aug25° / 22°5313.411.66.7
Sep26° / 22°4111.211.97.0
Oct26° / 23°461112.36.9
Nov28° / 24°5412.412.66.3
Dec28° / 25°15321.212.84.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 14%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58614
68515
78515
88515
98515
108515
118416
128416
138416
148416
158416
168416
178416
188515
198515
208515
218614
228614
238713
248713
258713
268713
278812
288812
298812
308812

Chance of precipitation in September

Any precipitation

Iharan̈a gets around 41 mm of rain over 11.2 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 37% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
240
340
440
540
640
740
840
939
1039
1139
1238
1338
1437
1537
1636
1736
1835
1934
2034
2134
2234
2334
2434
2534
2634
2734
2835
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1139591
2138601
3137611
4136621
5135631
6135631
7134641
8133651
9133651
10132661
11132661
12132661
13031672
14030682
15030682
16029692
17028702
18027712
19026722
20026722
21025723
22024733
23023743
24022744
25021754
26020755
27019765
28018766
29017767
30017758

Wind in September

Winds average 29 km/h in September.

Across September, daily wind ranges from about 27 km/h on the calmest days to 30 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
130windy
230windy
329windy
429windy
529windy
629windy
729windy
829windy
929windy
1029windy
1129windy
1229breezy
1329breezy
1429breezy
1529breezy
1629breezy
1729breezy
1829breezy
1929breezy
2029breezy
2128breezy
2228breezy
2328breezy
2428breezy
2528breezy
2628breezy
2728breezy
2828breezy
2928breezy
3027breezy

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 5:48 AM to 5:26 AM, and sunset from 5:32 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:485:32
211.85:475:32
311.85:465:32
411.85:455:32
511.85:455:32
611.85:445:32
711.85:435:32
811.85:435:32
911.85:425:32
1011.95:415:32
1111.95:405:32
1211.95:405:32
1311.95:395:32
1411.95:385:32
1511.95:375:32
1611.95:375:32
1711.95:365:32
1812.05:355:32
1912.05:345:32
2012.05:345:32
2112.05:335:32
2212.05:325:32
2312.05:315:32
2412.05:315:32
2512.05:305:32
2612.15:295:32
2712.15:285:32
2812.15:285:32
2912.15:275:32
3012.15:265:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.76 kWh/m².

For context, solar energy here swings from a low near 4.33 kWh/m² to a high of 6.58 kWh/m² in November across the year — September's 5.76 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.6Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Bright
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Iharan̈a

In seasonPeak

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

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

Iharan̈a's monsoon runs December–April, 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 Iharan̈a?

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

7.0
Sightseeing
1st-best month of the year
6.5
Beach & pool
4th-best month of the year

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

What to pack for Iharan̈a in September

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

In September, Iharan̈a sees daytime highs around 26°C and nights near 22°C. Pack a windbreaker. Worth having: light clothes, rain gear and sun protection. About 11 days see rain.

a windbreakerlight clothesrain gearsun protection

Sea temperature near Iharan̈a in September

The nearest coast averages about 25°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 14 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
Mar29Tropical
Apr28Tropical
May27Warm
Jun26Warm
Jul25Warm
Aug24Warm
Sep25Warm
Oct25Warm
Nov27Warm
Dec28Warm

UV index in Iharan̈a 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 Iharan̈a peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 16UV 15Jun 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr12Extreme
May10Very high
Jun9Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Iharan̈a?

Iharan̈a sits at 13.3°S, 50.0°E, in Madagascar. The nearest listed city is Sambava, 104 km away.

SambavaAmbilobeAmbarakarakaAntsohimbondronaAntsirananaAndapaAmpahanaAmbanja

Topography around Iharan̈a

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

Within 3 km, the terrain around Iharan̈a has only modest variations in elevation — a maximum elevation change of 117 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 420 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,814 m.

The land around Iharan̈a is covered by water (71%) within 3 km, water (55%) and grassland (31%) within 16 km, and grassland (37%), water (37%) and trees (22%) within 80 km.

3 km
117 m
16 km
420 m
80 km
1,814 m
treesshrubsgrasslandartificial surfaceswaterwetlandmangroves
September weather nearby: Sambava 104 km · Ambilobe 104 km · Ambarakaraka 124 km · Antsohimbondrona 128 km · Antsiranana 138 km · Andapa 149 km · Ampahana 157 km · Ambanja 171 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 Iharan̈a (-13.35°, 50°), 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).