Nosy Varika weather in September

In September, Nosy Varika sees average daytime highs of 24°C and overnight lows near 19°C, with 55 mm of rain across 10.6 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 60% of the time in September, and the air most often feels humid.

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

Daytime high
24°
9th warmest
Overnight low
19°
4th coldest
Rainfall
55 mm
10.6 wet days
Daylight
11 h 54 min
5:44 AM – 5:37 PM
Cloud cover
37%
1st clearest
Wind
11 km/h
3rd windiest
Solar energy
5.15 kWh/m²
Travel score
7.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Nosy Varika reaches about 24°C in the afternoon and slips back to 19°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52419
62419
72419
82419
92419
102419
112419
122419
132419
142419
152419
162419
172519
182519
192519
202519
212519
222520
232520
242520
252520
262520
272520
282520
292520
302520

How September really feels in Nosy Varika

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.

Nosy Varika weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°31223.313.13.9
Feb29° / 24°28822.312.73.7
Mar28° / 24°28423.412.14.2
Apr27° / 23°16619.611.55.1
May25° / 21°18618.9115.7
Jun24° / 19°11717.410.86.0
Jul23° / 18°12018.310.95.8
Aug23° / 18°7213.811.36.7
Sep24° / 19°5510.611.97.2
Oct26° / 21°6610.712.56.9
Nov27° / 22°8111.2136.3
Dec28° / 24°15117.413.24.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in September, the clearest month of the year.

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

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28317
38416
48416
58416
68218
78218
88218
98119
108020
118020
128020
137822
147822
157921
167921
177921
187921
197921
208119
218119
228119
238218
248218
258218
268218
278317
288218
298218
308119

Chance of precipitation in September

Any precipitation

Nosy Varika gets around 55 mm of rain over 10.6 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 36% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
144
244
344
443
543
643
742
841
941
1040
1139
1238
1337
1436
1535
1634
1733
1833
1932
2031
2131
2230
2330
2429
2529
2629
2729
2830
2930
3030

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1963280
2962290
3862300
4861310
5860320
6859330
7859330
8858340
9956350
10955360
11954370
12953380
13952390
14951400
15851410
16849420
17848430
18747451
19746461
20745471
21644481
22644501
23543511
24542521
25441532
26340552
27340552
28339562
29338563
30337573

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 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
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2812calm
2912calm
3012calm

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 5:58 AM to 5:30 AM, and sunset from 5:33 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:585:33
211.65:575:33
311.65:565:34
411.65:555:34
511.75:545:34
611.75:535:34
711.75:525:35
811.75:515:35
911.75:505:35
1011.85:505:35
1111.85:495:36
1211.85:485:36
1311.85:475:36
1411.85:465:36
1511.95:455:36
1611.95:445:37
1711.95:435:37
1811.95:425:37
1911.95:415:37
2012.05:405:38
2112.05:395:38
2212.05:385:38
2312.05:375:38
2412.05:365:39
2512.15:355:39
2612.15:345:39
2712.15:335:39
2812.15:325:40
2912.15:315:40
3012.25:305:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.15 kWh/m².

For context, solar energy here swings from a low near 3.3 kWh/m² to a high of 6.28 kWh/m² in November across the year — September's 5.15 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
135.0Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.3Bright
215.3Bright
225.3Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Nosy Varika

In seasonPeak

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

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

Nosy Varika's rainy season runs December–May, 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 Nosy Varika?

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

7.2
Sightseeing
1st-best month of the year
6.3
Beach & pool
3rd-best month of the year

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

What to pack for Nosy Varika in September

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

In September, Nosy Varika sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Nosy Varika 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 offshore 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
Jul25Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov26Warm
Dec27Warm

UV index in Nosy Varika in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nosy Varika peaks around February 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 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 highExtremeFeb 13UV 16Jun 18UV 6
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar13Extreme
Apr10Very high
May8Very high
Jun6High
Jul7High
Aug8Very high
Sep10Extreme
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Nosy Varika 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 Nosy Varika is worst in October — around 24 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (March, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 2023 µg/m³Mar 116 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb6Good
Mar6Good
Apr6Good
May8Good
Jun8Good
Jul7Good
Aug8Good
Sep8Good
Oct24Moderate
Nov18Moderate
Dec8Good
Location & terrain

Where is Nosy Varika?

Nosy Varika sits at 20.6°S, 48.5°E, 8 m above sea level, in Madagascar. The nearest listed city is Sahavato, 21 km away.

IfanadianaFandrianaAmbositraVatomandry

Topography around Nosy Varika

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

Within 3 km, the terrain around Nosy Varika has only modest variations in elevation — a maximum elevation change of 14 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,337 m.

The land around Nosy Varika is covered by water (38%), grassland (24%) and trees (20%) within 3 km, water (49%) and trees (25%) within 16 km, and water (33%), trees (28%) and grassland (25%) within 80 km.

3 km
14 m
16 km
166 m
80 km
1,337 m
treesshrubsgrasslandcroplandbare terrainwaterwetland
September weather nearby: Sahavato 21 km · Marolambo 74 km · Mananjary 75 km · Mahanoro 81 km · Ifanadiana 123 km · Fandriana 126 km · Ambositra 134 km · Vatomandry 147 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 Nosy Varika (-20.5833°, 48.5333°, elevation 8 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).