Antsiranana in Summer
In summer (December, January and February), Antsiranana sees average daytime highs around 30°C and overnight lows near 24°C, with 584 mm of rain over about 63 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 16% of the time across summer, and the air most often feels oppressive.
Summer is Antsiranana's weakest season of the year to visit on our travel score. For the whole year in context, see Antsiranana's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 584 mm
- 63 wet days
- Avg wind
- 12 km/h
- Travel score
- 3.6
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Antsiranana in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Antsiranana reaches about 30°C and drops to 24°C overnight. The warmest of the three months is December, the coolest December.
How summer really feels in Antsiranana
Once humidity and wind are folded in, summer brings about 90 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.
Antsiranana 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 | 30° / 24° | 244 | 24.4 | 12.6 | 3.4 |
| Feb | 29° / 24° | 220 | 23.6 | 12.4 | 3.3 |
| Mar | 30° / 24° | 151 | 19.2 | 12.1 | 3.9 |
| Apr | 31° / 24° | 45 | 8 | 11.7 | 5.0 |
| May | 30° / 23° | 12 | 1.9 | 11.4 | 6.2 |
| Jun | 29° / 22° | 5 | 1.2 | 11.3 | 7.1 |
| Jul | 28° / 21° | 6 | 1.3 | 11.3 | 7.8 |
| Aug | 28° / 21° | 4 | 0.9 | 11.6 | 7.8 |
| Sep | 29° / 21° | 3 | 0.7 | 11.9 | 7.4 |
| Oct | 30° / 22° | 13 | 1.3 | 12.3 | 6.5 |
| Nov | 31° / 23° | 31 | 4.2 | 12.6 | 5.5 |
| Dec | 31° / 24° | 121 | 15.3 | 12.7 | 4.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 16% of the time across summer.
Chance of precipitation in Summer
Antsiranana gets around 584 mm of rain over 63 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 12 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 min in early December to 12 h 18 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 5.5 kWh/m².
Hazard calendar for Antsiranana
In summer, Antsiranana overlaps its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.
Antsiranana sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Antsiranana's monsoon runs December–March, when most of the year's rain falls.
Is summer a good time to visit Antsiranana?
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 weaker month for outdoor sightseeing in Antsiranana.
What to pack for Antsiranana in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Antsiranana sees daytime highs around 30°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 63 days see rain.
Sea temperature near Antsiranana 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 at the nearest coast (about 23 km away) is warmest in March at about 28°C and coldest in August near 25°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 | 28 | 28 | 28 | 28 | 26 | 25 | 25 | 25 | 25 | 27 | 28 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Tropical |
| Mar | 28 | Tropical |
| Apr | 28 | Tropical |
| May | 28 | Warm |
| Jun | 26 | Warm |
| Jul | 25 | Warm |
| Aug | 25 | Warm |
| Sep | 25 | Warm |
| Oct | 25 | Warm |
| Nov | 27 | Warm |
| Dec | 28 | Warm |
UV index in Antsiranana in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Antsiranana peaks around February 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (very 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 | 15 | 15 | 12 | 10 | 9 | 9 | 11 | 13 | 14 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Extreme |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 11 | Extreme |
| Sep | 13 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Antsiranana?
Antsiranana sits at 12.3°S, 49.3°E, 60 m above sea level, in Madagascar. The nearest listed city is Antsohimbondrona, 98 km away.
Topography around Antsiranana
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Antsiranana.
Within 3 km, the terrain around Antsiranana has only modest variations in elevation — a maximum elevation change of 106 m around an average of 39 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 466 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,441 m.
The land around Antsiranana is covered by grassland (47%) and artificial surfaces (23%) within 3 km, grassland (30%) and water (29%) within 16 km, and water (60%) and grassland (21%) 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 Antsiranana (-12.3173°, 49.2919°, elevation 60 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.