Toamasina weather in May

In May, Toamasina sees average daytime highs of 25°C and overnight lows near 24°C, with 201 mm of rain across 23.5 wet days and about 11.2 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 45% of the time in May, and the air most often feels muggy.

Daylight stretches from about 11 h 24 min at the start of May to 11 hours by month's end. Set against the rest of the year, May is Toamasina's 5th-clearest and 5th-windiest month. For the whole year in context, see Toamasina's year-round climate.

Daytime high
25°
7th warmest
Overnight low
24°
6th coldest
Rainfall
201 mm
23.5 wet days
Daylight
11 h 06 min
6:04 AM – 5:13 PM
Cloud cover
46%
5th clearest
Wind
17 km/h
5th windiest
Solar energy
3.86 kWh/m²
Travel score
5.0
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 May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical May day in Toamasina reaches about 25°C in the afternoon and slips back to 24°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 26°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12624
22624
32624
42624
52624
62624
72624
82624
92624
102624
112524
122524
132524
142524
152524
162524
172523
182523
192523
202523
212523
222523
232523
242523
252523
262523
272523
282523
292523
302523
312523

Toamasina weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 4th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 30% of May, with mostly cloudy or overcast conditions the remaining 25%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27525
37525
47525
57525
67426
77426
87426
97426
107327
117327
127327
137327
147327
157327
167327
177327
187426
197525
207525
217525
227624
237525
247624
257624
267624
277723
287723
297723
307723
317624

Chance of precipitation in May

Any precipitation

Toamasina gets around 201 mm of rain over 23.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 76% and peaks near 77% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
175
275
375
475
575
675
775
875
976
1076
1176
1277
1377
1477
1577
1677
1777
1877
1977
2077
2176
2276
2376
2476
2576
2676
2776
2876
2976
3076
3176

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10128701
20129691
30130681
40131671
50133651
60134641
70135631
80236611
90238591
100239581
110241561
120243541
130345511
140347501
150349471
160451450
170453430
180455410
190556390
200557380
210559360
220660340
230661330
240662320
250762310
261762300
271862290
281963270
2911063260
3011163250
3111263240

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 17 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 24 min at the start of May to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over May. Sunrise moves from 5:59 AM to 6:10 AM, and sunset from 5:20 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.45:595:20
211.35:595:20
311.36:005:19
411.36:005:18
511.36:005:18
611.36:015:17
711.36:015:17
811.36:015:16
911.26:025:16
1011.26:025:16
1111.26:025:15
1211.26:035:15
1311.26:035:14
1411.26:035:14
1511.26:045:13
1611.16:045:13
1711.16:055:13
1811.16:055:12
1911.16:055:12
2011.16:065:12
2111.16:065:12
2211.16:065:11
2311.16:075:11
2411.16:075:11
2511.16:085:11
2611.06:085:10
2711.06:085:10
2811.06:095:10
2911.06:095:10
3011.06:095:10
3111.06:105:10

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.86 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 — May's 3.86 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.1Bright
84.0Bright
94.0Bright
104.0Moderate
114.0Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.8Moderate
233.7Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.6Moderate
313.6Moderate
Planning a trip in May

Hazard calendar for Toamasina

In seasonPeak

In May, Toamasina sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 May a good time to visit Toamasina?

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

5.0
Sightseeing
5th-best month of the year
4.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Toamasina for sightseeing.

What to pack for Toamasina in May

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

In May, Toamasina sees daytime highs around 25°C and nights near 24°C. Pack rain gear. Worth having: light clothes. About 24 days see rain.

rain gearlight clothes

Sea temperature near Toamasina in May

The nearest coast averages about 27°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 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
May 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).