Mananjary weather in August

In August, Mananjary sees average daytime highs of 24°C and overnight lows near 18°C, with 57 mm of rain across 13.2 wet days and about 11.3 hours of daylight. It is the 11th-warmest and 11th-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 53% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 hours at the start of August to 11 h 36 min by month's end. Set against the rest of the year, August is Mananjary's 1st-clearest and 8th-windiest month. For the whole year in context, see Mananjary's year-round climate.

Daytime high
24°
11th warmest
Overnight low
18°
2nd coldest
Rainfall
57 mm
13.2 wet days
Daylight
11 h 18 min
6:13 AM – 5:29 PM
Cloud cover
40%
1st clearest
Wind
9 km/h
8th windiest
Solar energy
4.26 kWh/m²
Travel score
6.8
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Mananjary reaches about 24°C in the afternoon and slips back to 18°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 25°C. Set against its neighbours, August runs on par with July and about 1°C cooler than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12318
22318
32318
42318
52318
62318
72418
82418
92418
102418
112418
122418
132418
142418
152418
162418
172418
182418
192419
202419
212419
222419
232419
242419
252419
262419
272419
282419
292419
302419
312419

How August really feels in Mananjary

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.

Mananjary 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
Jan29° / 25°31225.113.13.5
Feb29° / 25°27423.612.73.5
Mar29° / 24°27924.912.23.8
Apr28° / 23°16420.911.54.9
May26° / 21°14119115.5
Jun24° / 19°9216.910.76.0
Jul23° / 18°9417.810.86.0
Aug24° / 18°5713.211.36.8
Sep25° / 19°481011.97.2
Oct26° / 21°6010.712.56.8
Nov28° / 23°8512.7135.9
Dec29° / 24°15219.413.34.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 25% of August, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37426
47525
57525
67624
77723
87723
97822
107822
117921
127921
137921
148020
157921
168020
178020
187921
197921
207921
217921
227921
237921
247921
257921
267921
277822
287921
297921
307921
318020

Chance of precipitation in August

Any precipitation

Mananjary gets around 57 mm of rain over 13.2 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 43% and peaks near 50% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
249
348
447
546
645
744
844
943
1042
1142
1242
1341
1441
1541
1641
1741
1841
1941
2041
2141
2241
2342
2442
2542
2642
2743
2843
2943
3042
3142

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
175736
275835
365935
465935
566034
666034
766034
866133
966133
1066034
1156134
1256134
1356035
1455936
1555837
1655837
1755738
1855639
1955639
2055540
2155540
2255441
2355342
2455342
2555243
2655144
2755144
2855045
2954945
3054946
3154847

Wind in August

Winds average 9 km/h in August.

Across August, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 hours at the start of August to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over August. Sunrise moves from 6:22 AM to 6:00 AM, and sunset from 5:23 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:225:23
211.06:225:24
311.06:215:24
411.16:215:24
511.16:205:25
611.16:195:25
711.16:195:26
811.16:185:26
911.16:185:26
1011.26:175:27
1111.26:165:27
1211.26:165:27
1311.26:155:28
1411.26:145:28
1511.26:135:28
1611.36:135:29
1711.36:125:29
1811.36:115:29
1911.36:105:30
2011.36:105:30
2111.46:095:30
2211.46:085:31
2311.46:075:31
2411.46:065:31
2511.46:055:32
2611.56:055:32
2711.56:045:32
2811.56:035:32
2911.56:025:33
3011.56:015:33
3111.66:005:33

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.26 kWh/m².

For context, solar energy here swings from a low near 3.28 kWh/m² to a high of 6.32 kWh/m² in December across the year — August's 4.26 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
74.0Moderate
84.0Bright
94.1Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.2Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.7Bright
Planning a trip in August

Hazard calendar for Mananjary

In seasonPeak

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

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

Mananjary'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 August a good time to visit Mananjary?

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

6.8
Sightseeing
2nd-best month of the year
5.6
Beach & pool
4th-best month of the year

August is a reasonable time to visit Mananjary for sightseeing.

What to pack for Mananjary in August

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

In August, Mananjary sees daytime highs around 24°C and nights near 18°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Mananjary in August

The nearest coast averages about 24°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 16 km away) is warmest in February at about 28°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
Feb28Tropical
Mar28Tropical
Apr28Warm
May27Warm
Jun26Warm
Jul25Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov26Warm
Dec27Warm

UV index in Mananjary in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mananjary peaks around February 12 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 12UV 16Jun 18UV 6
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar13Extreme
Apr10Very high
May7Very high
Jun6High
Jul6High
Aug8Very high
Sep9Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Mananjary in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Mananjary is worst in October — around 36 µg/m³ PM2.5 (poor), about 5.6× the cleanest month (February, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateOct 1834 µg/m³Feb 196 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb6Good
Mar7Good
Apr9Good
May13Moderate
Jun13Moderate
Jul12Good
Aug11Good
Sep14Moderate
Oct36Poor
Nov22Moderate
Dec10Good
Location & terrain

Where is Mananjary?

Mananjary sits at 21.2°S, 48.3°E, 7 m above sea level, in Madagascar. The nearest listed city is Sahavato, 70 km away.

AmboanjoManakaraIkongoFianarantsoaMarolambo

Topography around Mananjary

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

Within 3 km, the terrain around Mananjary has only modest variations in elevation — a maximum elevation change of 41 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 86 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,258 m.

The land around Mananjary is covered by water (37%), trees (25%) and grassland (21%) within 3 km, water (46%), grassland (25%) and trees (22%) within 16 km, and water (35%), grassland (29%) and trees (22%) within 80 km.

3 km
41 m
16 km
86 m
80 km
1,258 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Sahavato 70 km · Ifanadiana 74 km · Nosy Varika 75 km · Amboanjo 100 km · Manakara 108 km · Ikongo 119 km · Fianarantsoa 132 km · Marolambo 133 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 Mananjary (-21.2303°, 48.3417°, elevation 7 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).