Toamasina weather in August

In August, Toamasina sees average daytime highs of 23°C and overnight lows near 21°C, with 112 mm of rain across 20.8 wet days and about 11.4 hours of daylight. It is the 12th-warmest and 9th-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 50% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 h 12 min at the start of August to 11 h 36 min by month's end. Set against the rest of the year, August is Toamasina's 4th-clearest and 7th-windiest month. For the whole year in context, see Toamasina's year-round climate.

Daytime high
23°
12th warmest
Overnight low
21°
1st coldest
Rainfall
112 mm
20.8 wet days
Daylight
11 h 24 min
6:05 AM – 5:28 PM
Cloud cover
41%
4th clearest
Wind
16 km/h
7th windiest
Solar energy
4.26 kWh/m²
Travel score
5.5
out of 10

Toamasina is port city in eastern Madagascar.

Density
17,255/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 23°C through the month.

A typical August day in Toamasina 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, August runs on par with July and on par with September.

18°20°22°24°26°151015202531
Avg high (°C)Avg low (°C)
12321
22321
32321
42321
52321
62321
72321
82321
92321
102321
112321
122321
132321
142321
152321
162321
172321
182321
192321
202321
212321
222321
232321
242321
252321
262321
272321
282321
292321
302321
312321

Toamasina weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 26°30525134.2
Feb27° / 26°3202312.64.2
Mar27° / 25°34626.212.14.2
Apr26° / 25°20024.211.64.6
May25° / 24°20123.511.25.0
Jun24° / 22°17424.210.94.9
Jul23° / 21°18024.3114.9
Aug23° / 21°11220.811.45.5
Sep23° / 22°7617.711.96.1
Oct24° / 23°771712.46.3
Nov26° / 24°7916.112.96.1
Dec27° / 25°1862213.14.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 31% of August, with mostly cloudy or overcast conditions the remaining 18%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17525
27525
37624
47624
57723
67723
77822
87822
97822
108020
118020
128119
138119
148218
158218
168317
178317
188317
198317
208416
218515
228515
238515
248515
258515
268515
278515
288614
298614
308614
318614

Chance of precipitation in August

Any precipitation

Toamasina gets around 112 mm of rain over 20.8 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 68% and peaks near 73% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
173
272
371
470
570
669
769
868
968
1068
1167
1267
1367
1467
1566
1666
1766
1866
1966
2066
2166
2266
2366
2467
2567
2667
2768
2868
2969
3069
3169

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11149391
21150391
31150381
41151371
51151371
61152361
71153351
81054351
91055350
101056340
111056340
121056340
13956350
14956350
15956350
16955360
17955360
18954370
19954370
20954370
21953380
22953380
23952390
24952390
25951400
26951400
27950410
28950410
29851410
30849420
31849420

Wind in August

Winds average 16 km/h in August.

Across August, daily wind ranges from about 16 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 12 min 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 24 minutes over August. Sunrise moves from 6:13 AM to 5:54 AM, and sunset from 5:24 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:135:24
211.26:135:24
311.26:125:24
411.26:125:25
511.26:115:25
611.26:115:25
711.36:105:25
811.36:105:26
911.36:095:26
1011.36:095:26
1111.36:085:27
1211.36:085:27
1311.36:075:27
1411.46:065:27
1511.46:065:28
1611.46:055:28
1711.46:045:28
1811.46:045:28
1911.46:035:29
2011.46:025:29
2111.56:025:29
2211.56:015:29
2311.56:005:30
2411.55:595:30
2511.55:595:30
2611.55:585:30
2711.65:575:30
2811.65:565:31
2911.65:555:31
3011.65:555:31
3111.65:545:31

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 3.43 kWh/m² to a high of 6.35 kWh/m² in November across the year — August's 4.26 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.9Moderate
33.9Moderate
43.9Moderate
54.0Moderate
64.0Moderate
74.0Bright
84.0Bright
94.1Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
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 Toamasina

In seasonPeak

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

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

Toamasina's rainy season runs December–July, 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 Toamasina?

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

5.5
Sightseeing
4th-best month of the year
4.2
Beach & pool
10th-best month of the year

August is a reasonable time to visit Toamasina for sightseeing.

What to pack for Toamasina in August

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

In August, Toamasina sees daytime highs around 23°C and nights near 21°C. Pack rain gear. Worth having: light clothes. About 21 days see rain.

rain gearlight clothes

Sea temperature near Toamasina 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 24 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
Apr28Tropical
May27Warm
Jun26Warm
Jul25Warm
Aug24Warm
Sep24Warm
Oct25Warm
Nov26Warm
Dec28Warm

UV index in Toamasina in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Toamasina peaks around February 13 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 highHighVery highExtremeFeb 13UV 15Jun 19UV 7
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar13Extreme
Apr11Extreme
May8Very high
Jun7High
Jul7Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov12Extreme
Dec14Extreme
Location & terrain

Where is Toamasina?

Toamasina sits at 18.1°S, 49.4°E, 12 m above sea level, in Madagascar. The nearest listed city is Vavatenina, 79 km away.

Fenoarivo AtsinananaDidyVohibinanyAmbodimanga IIAmbatondrazakaImerimandroso

Topography around Toamasina

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

Within 3 km, the terrain around Toamasina has only modest variations in elevation — a maximum elevation change of 15 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 201 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,456 m.

The land around Toamasina is covered by artificial surfaces (47%) and water (25%) within 3 km, water (54%) and trees (29%) within 16 km, and trees (49%) and water (37%) within 80 km.

3 km
15 m
16 km
201 m
80 km
1,456 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Vavatenina 79 km · Ampasimanolotra 82 km · Fenoarivo Atsinanana 85 km · Didy 92 km · Vohibinany 97 km · Ambodimanga II 101 km · Ambatondrazaka 110 km · Imerimandroso 118 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 Toamasina (-18.1492°, 49.4023°, elevation 12 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).