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Weather & Climate in Mantasoa, Madagascar
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mantasoa enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 73°F in January while summers reach 63°F in July / relatively mild seasonal variation. The area gets 318 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 70.8 inches (wetter than the 38-inch national average). The city sits at an elevation of 4,518 feet.
Temperature
73°F Jan (23°C)
63°F Jul (17°C)
| Annual Average | 69.6°F |
| 29% above US avg | |
| January Average | 73°F (23°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 4,518 ft (1,377 m) |
| Area | 42.2 sq mi (109.3 km²) |
| Population Density | 237/sq mi |
| Coordinates | -19.0167°N, 47.8333°W |
| Timezone | Indian/Antananarivo |
Precipitation & Snow
Air Quality
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| May 13, 2020 | Madagascar | M4.8 | 144 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
20 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2026 | Gezani | Category 3 | — | 103 km |
| 2023 | Freddy | Category 2 | 92 mph | 228 km |
| 2022 | Batsirai | Category 3 | 104 mph | 226 km |
| 2022 | Emnati | Category 1 | 86 mph | 259 km |
| 2018 | Dumazile | Category 2 | 75 mph | 291 km |
| 2018 | Ava | Category 2 | 92 mph | 117 km |
| 2013 | Felleng | Category 1 | 69 mph | 293 km |
| 2012 | Giovanna | Category 4 | 98 mph | 18 km |
| 2008 | Ivan | Category 4 | 115 mph | 171 km |
| 2007 | Clovis | Category 1 | 71 mph | 194 km |
| 2003 | Manou | Category 1 | 96 mph | 130 km |
| 2000 | Eline:leone | Category 1 | 104 mph | 36 km |
| 1996 | Bonita | Category 4 | 92 mph | 197 km |
| 1996 | Edwige | Category 2 | 92 mph | 188 km |
| 1994 | Litanne | Category 4 | 104 mph | 60 km |
| 1994 | Geralda | Category 4 | 109 mph | 98 km |
| 1994 | Daisy | Category 2 | 98 mph | 97 km |
| 1990 | Alibera | Category 1 | 71 mph | 210 km |
| 1989 | Jinabo | Category 1 | 71 mph | 217 km |
| 1986 | Honorinina | Category 2 | 83 mph | 128 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Itasy Volcanic Field (119 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Itasy Volcanic Field | Pyroclastic cone(s) | 1,800 m (5,906 ft) | -6050 | 119 km |
| Vakinankaratra | Pyroclastic cone(s) | 2,644 m (8,675 ft) | Unknown | 132 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 73°F (23°C) | 11.8 in | Warmest, Wettest |
| February | 68°F (20°C) | 10.0 in | |
| March | 67°F (20°C) | 9.3 in | |
| April | 65°F (19°C) | 2.1 in | |
| May | 62°F (17°C) | 1.0 in | |
| June | 58°F (15°C) | 0.9 in | |
| July | 63°F (17°C) | 1.1 in | |
| August | 56°F (14°C) | 1.0 in | Coldest |
| September | 59°F (15°C) | 0.8 in | Driest |
| October | 63°F (17°C) | 2.0 in | |
| November | 66°F (19°C) | 5.9 in | |
| December | 67°F (20°C) | 10.8 in |
Mantasoa has a seasonal temperature swing of 16°F / from 56°F in August to 73°F in January. Total annual precipitation is 56.5 inches, with January being the wettest month (11.8") and September the driest (0.8").