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NASA CC BY-SA 4.0 Wikimedia Commons

Mangoky River

Stream

Major river in southwest Madagascar draining to the Mozambique Channel across Atsimo‑Andrefana. Travelers encounter seasonal floodplains, remote riverside villages and boat journeys through changing landscapes.

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In this guide

Mangoky River essentials

Address: Mangoky River, Atsimo-Andrefana region, Madagascar
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About Mangoky River

The Mangoky River is a major river in southwestern Madagascar that flows generally westward to the Mozambique Channel through the Atsimo-Andrefana region. It drains an extensive interior plain and forms a delta where it reaches the west coast of the island.

The river passes through predominantly dry tropical landscapes and is an important local watercourse for irrigation and transport; seasonal rains cause large fluctuations in flow and can make crossings difficult in the wet season. The Mangoky’s lower reaches and delta open onto the west coast of Madagascar.

  • Course and drainage: Flows westward across southwestern Madagascar to the Mozambique Channel, draining a large inland catchment in Atsimo-Andrefana.
  • Seasonality and transport: Seasonal variations and flooding can affect crossings and local agriculture; river transport and ferry crossings are used where roads are limited.
When to Go

Best Time to Visit Mangoky River

Visit during the dry season (May-October) to avoid heavy rains and to have more reliable river and road access.

Dry season (best)
May-October · ~18-28°C
Lower rainfall and easier travel along the river and surrounding plains - better for river navigation and outdoor activities.
Wet season
November-April · ~22-32°C
Heavy rains and potential flooding can make travel and river conditions difficult; parts of the basin become less accessible.

Weather & Climate near Mangoky River

Climate

Mangoky River's climate is classified as Hot Semi-Arid - Hot Semi-Arid climate with hot summers (peaking in February) and warm winters (coldest in July). Temperatures range from 15°C to 32°C. Moderate rainfall (547 mm/year) with a pronounced dry season.

Air Quality: AQI 28 Good
Best Time to Visit
AugustSeptemberOctober
Temperature & Rainfall
Temperature Range
40°
Warmest Month
13°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Very Good 24° - 32° 31° 149 mm partly cloudy 75% 4.2 m/s 3.2 extreme 13.1h
February Very Good 24° - 32° 31° 166 mm some cloud 77% 5.0 m/s 3.1 extreme 12.7h
March Very Good 23° - 32° 30° 76 mm some cloud 76% 4.4 m/s 2.8 extreme 12.1h
April Ideal 21° - 31° 26° 8 mm mostly sunny 71% 3.3 m/s 2.1 extreme 11.5h
May Ideal 17° - 30° 24° 5 mm mostly sunny 67% 2.8 m/s 1.6 very high 11.0h
June Ideal 15° - 28° 22° 4 mm clear 63% 2.8 m/s 1.2 high 10.7h
July Ideal 15° - 28° 22° 2 mm clear 61% 3.1 m/s 1.3 high 10.8h
August Ideal 15° - 28° 22° 1 mm clear 59% 3.7 m/s 1.6 very high 11.3h
September Ideal 17° - 29° 23° 4 mm clear 58% 3.9 m/s 2.1 extreme 11.9h
October Ideal 19° - 30° 25° 8 mm mostly sunny 59% 3.9 m/s 2.5 extreme 12.5h
November Ideal 21° - 31° 26° 27 mm mostly sunny 59% 4.6 m/s 2.9 extreme 13.0h
December Excellent 23° - 32° 29° 97 mm some cloud 65% 4.8 m/s 3.2 extreme 13.3h