Mahanoro in Summer
In summer (December, January and February), Mahanoro sees average daytime highs around 29°C and overnight lows near 24°C, with 814 mm of rain over about 67 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 20% of the time across summer, and the air most often feels oppressive.
Summer is Mahanoro's weakest season of the year to visit on our travel score. For the whole year in context, see Mahanoro's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 24°C
- Rainfall
- 814 mm
- 67 wet days
- Avg wind
- 11 km/h
- Travel score
- 4.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Mahanoro in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Mahanoro reaches about 29°C and drops to 24°C overnight. The warmest of the three months is January, the coolest December.
How summer really feels in Mahanoro
Once humidity and wind are folded in, summer brings about 53 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mahanoro weather by month
How the three summer months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 24° | 315 | 24.6 | 13.1 | 3.7 |
| Feb | 29° / 24° | 309 | 23.3 | 12.7 | 3.6 |
| Mar | 28° / 24° | 319 | 25.1 | 12.1 | 4.0 |
| Apr | 27° / 23° | 175 | 20.5 | 11.6 | 5.0 |
| May | 25° / 21° | 200 | 19.8 | 11.1 | 5.5 |
| Jun | 24° / 20° | 121 | 17.8 | 10.8 | 5.9 |
| Jul | 23° / 19° | 123 | 19.3 | 10.9 | 5.6 |
| Aug | 23° / 19° | 75 | 15 | 11.3 | 6.5 |
| Sep | 24° / 19° | 59 | 12 | 11.9 | 7.0 |
| Oct | 26° / 21° | 79 | 12.2 | 12.5 | 6.6 |
| Nov | 27° / 23° | 91 | 12.2 | 12.9 | 6.2 |
| Dec | 28° / 24° | 190 | 18.7 | 13.2 | 4.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 20% of the time across summer.
Chance of precipitation in Summer
Mahanoro gets around 814 mm of rain over 67 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 06 min in early December to 12 h 24 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.1 kWh/m².
Hazard calendar for Mahanoro
In summer, Mahanoro overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Mahanoro sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Mahanoro's rainy season runs December–May, when most of the year's rain falls.
Is summer a good time to visit Mahanoro?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Mahanoro for sightseeing.
What to pack for Mahanoro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mahanoro sees daytime highs around 29°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 67 days see rain.
Sea temperature near Mahanoro in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 29 | 28 | 28 | 27 | 26 | 25 | 24 | 24 | 25 | 26 | 28 |
| Comfort | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 29 | Tropical |
| Mar | 28 | Tropical |
| Apr | 28 | Warm |
| May | 27 | Warm |
| Jun | 26 | Warm |
| Jul | 25 | Warm |
| Aug | 24 | Warm |
| Sep | 24 | Warm |
| Oct | 25 | Warm |
| Nov | 26 | Warm |
| Dec | 28 | Warm |
UV index in Mahanoro in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mahanoro peaks around February 13 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 16 | 13 | 10 | 8 | 6 | 7 | 8 | 10 | 11 | 12 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | High | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 16 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 7 | High |
| Aug | 8 | Very high |
| Sep | 10 | Extreme |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 14 | Extreme |
Air quality in Mahanoro in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Mahanoro is worst in October — around 24 µg/m³ PM2.5 (moderate), about 4.1× the cleanest month (March, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 7 | 6 | 6 | 6 | 8 | 8 | 7 | 8 | 8 | 24 | 18 | 8 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 6 | Good |
| Mar | 6 | Good |
| Apr | 6 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 8 | Good |
| Sep | 8 | Good |
| Oct | 24 | Moderate |
| Nov | 18 | Moderate |
| Dec | 8 | Good |
Where is Mahanoro?
Mahanoro sits at 19.9°S, 48.8°E, 3 m above sea level, in Madagascar. The nearest listed city is Vatomandry, 66 km away.
Topography around Mahanoro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mahanoro.
Within 3 km, the terrain around Mahanoro has only modest variations in elevation — a maximum elevation change of 42 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 236 m; within 80 km, large variations in elevation — a maximum elevation change of 1,147 m.
The land around Mahanoro is covered by shrubs (28%), trees (27%) and water (23%) within 3 km, water (50%) and trees (32%) within 16 km, and water (35%) and trees (34%) within 80 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
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 Mahanoro (-19.9°, 48.8°, elevation 3 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.