Antsiranana weather in August

In August, Antsiranana sees average daytime highs of 28°C and overnight lows near 21°C, with 4 mm of rain across 0.9 wet days and about 11.6 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 76% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 h 30 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Antsiranana's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Antsiranana's year-round climate.

Daytime high
28°
11th warmest
Overnight low
21°
1st coldest
Rainfall
4 mm
0.9 wet days
Daylight
11 h 36 min
5:59 AM – 5:35 PM
Cloud cover
27%
2nd clearest
Wind
24 km/h
2nd windiest
Solar energy
5.7 kWh/m²
Travel score
7.8
out of 10

Antsiranana is commune in Madagascar.

Density
3,261/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical August day in Antsiranana reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, August runs on par with July and on par with September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162821
172821
182821
192821
202821
212821
222821
232821
242821
252821
262821
272821
282821
292821
302821
312821

How August really feels in Antsiranana

Once humidity and wind are folded in, August 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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Antsiranana weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°24424.412.63.4
Feb29° / 24°22023.612.43.3
Mar30° / 24°15119.212.13.9
Apr31° / 24°45811.75.0
May30° / 23°121.911.46.2
Jun29° / 22°51.211.37.1
Jul28° / 21°61.311.37.8
Aug28° / 21°40.911.67.8
Sep29° / 21°30.711.97.4
Oct30° / 22°131.312.36.5
Nov31° / 23°314.212.65.5
Dec31° / 24°12115.312.74.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 10%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58911
68911
78911
88911
98911
108911
118911
128911
138911
148911
158911
168911
178911
188911
198911
209010
21919
22919
23919
24919
25928
26919
27919
28919
29928
30928
31928

Chance of precipitation in August

Any precipitation

Antsiranana gets around 4 mm of rain over 0.9 wet days in August. 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%151015202531
Rain chance (%)
15
24
34
44
53
63
73
82
92
102
112
122
132
142
153
163
173
183
193
203
213
224
234
244
254
264
274
283
293
303
313

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 71% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
112562120
212562120
312562120
412563110
512464110
612465100
712465100
81236790
90236890
100236980
110227080
120227080
130217180
140207370
150207370
160197470
170197470
180197470
190187570
200187570
210187471
220187471
230187471
240187471
250177481
260177481
270177580
280177580
290177580
300177580
310167590

Wind in August

Winds average 24 km/h in August.

Across August, daily wind ranges from about 23 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1423breezy
1523breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 30 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over August. Sunrise moves from 6:05 AM to 5:50 AM, and sunset from 5:32 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:055:32
211.56:055:33
311.56:055:33
411.56:045:33
511.56:045:33
611.56:045:33
711.56:035:33
811.56:035:34
911.56:035:34
1011.56:025:34
1111.56:025:34
1211.56:015:34
1311.66:015:34
1411.66:005:34
1511.66:005:34
1611.65:595:35
1711.65:595:35
1811.65:585:35
1911.65:585:35
2011.65:575:35
2111.65:575:35
2211.75:565:35
2311.75:555:35
2411.75:555:35
2511.75:545:35
2611.75:545:35
2711.75:535:35
2811.75:525:35
2911.75:525:35
3011.75:515:35
3111.75:505:35

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.7 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 6.97 kWh/m² in October across the year — August's 5.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.4Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.6Bright
135.6Bright
145.6Bright
155.7Bright
165.7Bright
175.7Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Bright
286.0Intense
296.0Intense
306.1Intense
316.1Intense
Planning a trip in August

Hazard calendar for Antsiranana

In seasonPeak

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

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

Antsiranana's monsoon runs December–March, when most of the year's rain falls.

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

Is August a good time to visit Antsiranana?

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

7.8
Sightseeing
1st-best month of the year
8.9
Beach & pool
2nd-best month of the year

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

What to pack for Antsiranana in August

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

In August, Antsiranana sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: sun protection and a windbreaker.

light clothessun protectiona windbreaker

Sea temperature near Antsiranana in August

The nearest coast averages about 25°C in August — 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 March at about 28°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr28Tropical
May28Warm
Jun26Warm
Jul25Warm
Aug25Warm
Sep25Warm
Oct25Warm
Nov27Warm
Dec28Warm

UV index in Antsiranana in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Antsiranana peaks around February 20 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 20UV 15Jun 22UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr12Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Antsiranana?

Antsiranana sits at 12.3°S, 49.3°E, 60 m above sea level, in Madagascar. The nearest listed city is Antsohimbondrona, 98 km away.

AntsohimbondronaAmbilobeIharan̈aAmbarakarakaHell-VilleAmbanjaSambavaMaromandia

Topography around Antsiranana

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

Within 3 km, the terrain around Antsiranana has only modest variations in elevation — a maximum elevation change of 106 m around an average of 39 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 466 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,441 m.

The land around Antsiranana is covered by grassland (47%) and artificial surfaces (23%) within 3 km, grassland (30%) and water (29%) within 16 km, and water (60%) and grassland (21%) within 80 km.

3 km
106 m
16 km
466 m
80 km
1,441 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
August weather nearby: Antsohimbondrona 98 km · Ambilobe 102 km · Iharan̈a 138 km · Ambarakaraka 139 km · Hell-Ville 164 km · Ambanja 176 km · Sambava 237 km · Maromandia 248 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 Antsiranana (-12.3173°, 49.2919°, elevation 60 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).