Fenoarivo Atsinanana weather in September

In September, Fenoarivo Atsinanana sees average daytime highs of 23°C and overnight lows near 21°C, with 113 mm of rain across 22.1 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 56% 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 Fenoarivo Atsinanana's 2nd-clearest and 7th-windiest month. For the whole year in context, see Fenoarivo Atsinanana's year-round climate.

Daytime high
23°
10th warmest
Overnight low
21°
3rd coldest
Rainfall
113 mm
22.1 wet days
Daylight
11 h 54 min
5:40 AM – 5:34 PM
Cloud cover
39%
2nd clearest
Wind
16 km/h
7th windiest
Solar energy
4.83 kWh/m²
Travel score
5.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical September day in Fenoarivo Atsinanana reaches about 23°C in the afternoon and slips back to 21°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 24°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

18°20°22°24°26°151015202530
Avg high (°C)Avg low (°C)
12321
22321
32321
42321
52321
62321
72321
82321
92321
102321
112321
122321
132321
142321
152321
162321
172321
182322
192322
202322
212322
222322
232322
242322
252322
262322
272322
282422
292422
302422

Fenoarivo Atsinanana weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°32025.912.94.1
Feb27° / 25°36722.912.64.2
Mar27° / 25°36526.412.14.2
Apr26° / 25°22825.111.64.5
May25° / 23°22425.211.24.7
Jun24° / 22°21826.4114.5
Jul23° / 21°23726.911.14.4
Aug23° / 21°15924.411.44.8
Sep23° / 21°11322.111.95.3
Oct24° / 23°1052112.45.6
Nov25° / 24°10519.412.85.5
Dec27° / 25°19524.5134.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 28% of September, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18218
28218
38218
48218
58218
68119
78119
88119
98119
108119
118020
128020
138119
148119
158119
168119
178317
188317
198416
208416
218515
228614
238713
248713
258713
268713
278713
288713
298713
308713

Chance of precipitation in September

Any precipitation

Fenoarivo Atsinanana gets around 113 mm of rain over 22.1 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 73% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
181
281
381
480
580
679
778
877
976
1074
1173
1272
1371
1471
1570
1669
1769
1869
1969
2069
2169
2269
2370
2470
2571
2671
2772
2872
2972
3072

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 54% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1552430
2551440
3550450
4550450
5549460
6549460
7548470
8548470
9547480
10546480
11646480
12645490
13645500
14644500
15543520
16542530
17542530
18541540
19440560
20439561
21438571
22336601
23335611
24334612
25333622
26232642
27231643
28231643
29230644
30229645

Wind in September

Winds average 16 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

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 5:52 AM to 5:28 AM, and sunset from 5:32 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:525:32
211.75:525:32
311.75:515:32
411.75:505:32
511.75:495:32
611.75:485:32
711.85:475:33
811.85:475:33
911.85:465:33
1011.85:455:33
1111.85:445:33
1211.85:435:33
1311.95:425:33
1411.95:415:34
1511.95:405:34
1611.95:405:34
1711.95:395:34
1811.95:385:34
1912.05:375:34
2012.05:365:34
2112.05:355:34
2212.05:345:35
2312.05:335:35
2412.05:335:35
2512.15:325:35
2612.15:315:35
2712.15:305:35
2812.15:295:36
2912.15:285:36
3012.15:285:36

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 3.31 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
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.8Bright
154.8Bright
164.8Bright
174.9Bright
184.9Bright
194.9Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for Fenoarivo Atsinanana

In seasonPeak

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

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

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

Is September a good time to visit Fenoarivo Atsinanana?

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

5.3
Sightseeing
3rd-best month of the year
4.1
Beach & pool
9th-best month of the year

September is a reasonable time to visit Fenoarivo Atsinanana for sightseeing.

What to pack for Fenoarivo Atsinanana in September

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

In September, Fenoarivo Atsinanana sees daytime highs around 23°C and nights near 21°C. Pack rain gear. Worth having: light clothes and sun protection. About 22 days see rain.

rain gearlight clothessun protection

Sea temperature near Fenoarivo Atsinanana 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 23 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
Jul24Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov27Warm
Dec28Warm

UV index in Fenoarivo Atsinanana 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 Fenoarivo Atsinanana peaks around February 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 11UV 15Jun 19UV 7
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul8Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme

Air quality in Fenoarivo Atsinanana 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 Fenoarivo Atsinanana is worst in November — around 27 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (February, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1625 µg/m³Feb 146 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr6Good
May7Good
Jun7Good
Jul7Good
Aug6Good
Sep6Good
Oct11Good
Nov27Moderate
Dec9Good
Location & terrain

Where is Fenoarivo Atsinanana?

Fenoarivo Atsinanana sits at 17.4°S, 49.4°E, 14 m above sea level, in Madagascar. The nearest listed city is Vavatenina, 24 km away.

ToamasinaImerimandrosoAndilamena

Topography around Fenoarivo Atsinanana

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

Within 3 km, the terrain around Fenoarivo Atsinanana has only modest variations in elevation — a maximum elevation change of 80 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,512 m.

The land around Fenoarivo Atsinanana is covered by trees (45%) and water (28%) within 3 km, water (38%) and trees (37%) within 16 km, and trees (45%) and water (34%) within 80 km.

3 km
80 m
16 km
408 m
80 km
1,512 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Vavatenina 24 km · Ambodimanga II 29 km · Vohibinany 40 km · Soanierana Ivongo 55 km · Ambodifotatra 64 km · Toamasina 85 km · Imerimandroso 88 km · Andilamena 98 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 Fenoarivo Atsinanana (-17.3809°, 49.4083°, elevation 14 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).