Antananarivo, Madagascar Climate & Monthly Averages
Antananarivo has a subtropical highland climate. December is the hottest month, averaging 80° by day; July is the coldest at 67°.
To understand Antananarivo, start with the wet season
Antananarivo's year is organised around rain rather than temperature. 66% of its 49.0 inches (1246 mm) annual total arrives in the January to March window, while July averages 7 mm (0.3 in). Temperatures move far less: 80°F (27°C) at the year's warmest against 67°F (20°C) at its coolest.
Where the rain falls in the calendar
July is the coolest month, with highs of 67°F (20°C) and lows near 50°F (10°C). December is the warm end of the year, averaging 80°F (27°C) by day and 62°F (16°C) overnight. Sunshine averages 10.1 hours a day over the year, peaking in November at 11.5 hours.
Between the average December and the average July lie 6°C, a narrower spread than about 83% of the cities we track. 5 months average under 20 mm of rain, the longest unbroken stretch running May through September. Seven of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is April through October.
The gridded 2015-2024 daily record for this location tops out at 92°F (33°C) and bottoms at 41°F (5°C) - decade extremes, not all-time station records.
More climate facts for Antananarivo
- Hottest month: December - highs near 80°F (27°C)
- Coldest month: July - highs near 67°F (20°C)
- Decade extremes (2015-2024): 92°F (33°C) high · 41°F (5°C) low
- Wettest month: January (24 rainy days) · Sunniest: November (11.5 h sun/day)
- Climate type: subtropical highland
- Annual swing: 6°C between the average warmest and coolest month · day to night: 10°C
- Average humidity: 76%
Follow the rain through Antananarivo's year
Each card shows the average high and low. The bar places that month between Antananarivo's coldest night and warmest afternoon.
January
- Rain
- 24 days
- Sunshine
- 8.9 h
- Daylight
- 13.1 h
February
- Rain
- 22 days
- Sunshine
- 9.3 h
- Daylight
- 12.7 h
March
- Rain
- 20 days
- Sunshine
- 9.9 h
- Daylight
- 12.2 h
April
- Rain
- 10 days
- Sunshine
- 10.2 h
- Daylight
- 11.7 h
May
- Rain
- 3 days
- Sunshine
- 9.6 h
- Daylight
- 11.2 h
June
- Rain
- 3 days
- Sunshine
- 9.1 h
- Daylight
- 11.0 h
July
- Rain
- 1 day
- Sunshine
- 9.2 h
- Daylight
- 11.1 h
August
- Rain
- 2 days
- Sunshine
- 10.3 h
- Daylight
- 11.5 h
September
- Rain
- 1 day
- Sunshine
- 10.9 h
- Daylight
- 12.0 h
October
- Rain
- 6 days
- Sunshine
- 11.4 h
- Daylight
- 12.6 h
November
- Rain
- 13 days
- Sunshine
- 11.5 h
- Daylight
- 13.0 h
December
- Rain
- 17 days
- Sunshine
- 10.9 h
- Daylight
- 13.3 h
Looking for warmer alternatives? Browse warm places by month, or compare Antananarivo's coolest part of the year: July, June, August.
Working around Antananarivo's rain pattern
Choose dates by rain, not just temperature
May to October is the sweet spot for Antananarivo - the rains have stopped and the heat has not yet peaked. Expect 72°F (22°C) in the afternoon and around 3 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in May.
What to pack
Pack for Antananarivo with a compact umbrella or rain shell. Note the gap between afternoon and night: December pairs 80°F (27°C) with 62°F (16°C).
How Antananarivo compares for rain and warmth
- 66% of the year's precipitation falls in its wettest three months - more seasonal than 95% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Monthly temperature and rain table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 78° | 62° | 24 | 14.6 in | 8.9 h/day | 13.1 h | 76% | 81% |
| February | 78° | 62° | 22 | 9.9 in | 9.3 h/day | 12.7 h | 76% | 81% |
| March | 77° | 62° | 20 | 7.8 in | 9.9 h/day | 12.2 h | 65% | 81% |
| April | 76° | 60° | 10 | 2.0 in | 10.2 h/day | 11.7 h | 32% | 79% |
| May | 72° | 56° | 3 | 0.4 in | 9.6 h/day | 11.2 h | 8% | 77% |
| June | 68° | 52° | 3 | 0.5 in | 9.1 h/day | 11.0 h | 9% | 77% |
| July | 67° | 50° | 1 | 0.3 in | 9.2 h/day | 11.1 h | 5% | 76% |
| August | 71° | 51° | 2 | 0.4 in | 10.3 h/day | 11.5 h | 5% | 72% |
| September | 74° | 53° | 1 | 0.3 in | 10.9 h/day | 12.0 h | 4% | 69% |
| October | 79° | 57° | 6 | 1.5 in | 11.4 h/day | 12.6 h | 20% | 69% |
| November | 81° | 60° | 13 | 4.1 in | 11.5 h/day | 13.0 h | 43% | 71% |
| December | 80° | 62° | 17 | 7.4 in | 10.9 h/day | 13.3 h | 54% | 76% |
The wet and quieter seasons in Antananarivo
Spring (September through November)
Spring brings comfortable warmth here - highs near 78°F (26°C), nights near 56°F (14°C), and expect showers on roughly 20 days across the season. Daylight is generous - around 11.3 hours of sun a day.
Summer (December through February)
Through summer, Antananarivo settles into easy warmth: 79°F (26°C) by day, 62°F (17°C) after dark, and rain falls on around 62 of the 90 days.
Fall (March through May)
Fall in Antananarivo settles into easy warmth, with daytime highs averaging 75°F (24°C) and nights around 59°F (15°C); rain falls on around 32 of the 90 days.
Winter (June through August)
Winter settles into easy warmth here - highs near 69°F (20°C), nights near 51°F (10°C), and precipitation is sparse, near 1.2 inches (30 mm) for the season.
Rain and seasonal questions about Antananarivo
How many rainy days does Antananarivo get in a year?
Is Antananarivo hot in summer?
When is the rainy season in Antananarivo?
Is Antananarivo humid?
How much sun does Antananarivo get?
How cold does Antananarivo get in winter?
Antananarivo temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.